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MDS-JE770 - MiniDisc Community Page

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1. 0 lt gt i A2 3V PLAY SW g 5104 A2 8N09 C148 LEM Sl pet QUT SW 5103 W201 0 70 015 lt 5 MO Nin B ele LIMIT IN SW 5101 0 5 5 O b MT TI Br C153 B gt gt SO M amp M B RAM 5102 i s s E 5 2 8 10153 lt gt AJALAJS S gt si MSM51V4400E REFRECT alojin de 70TS K CN102 lt 7 52 5 3 ml 27P 8 VIVIV o o v kao 0 lt 0 1 gt S PROTECT EN S gj 0609 2 2 400 4 3 1 rn Si cisis V 53 n 5 e XvE SIT 209 lt 0 1 gt 22 a fe 409 09 lt gt BE 5 2 KOE LIMIT IN 4 1 KEE Ds 6 zu f e os WRPWR dun 5 BD 2 1 DQSY 7 a WU cm BOARD lt 11 gt 814 Kadi 009 lt gt Sui 0 lt gt A07 J SQSY lt 1 t A02 Dar pese 210 187 D 1 2 m XRAS KOS 0 lt gt A05 SENS T MAIN P 41 A09 0 lt gt 094 3 55 3 VA A04 PLAY SW 2 age 5 2 XCAS SR T 13 5 2 KOE XLATCH 4 gt BOARD 1 2 lt 14 XOE 2 15 avss ix IC151 MO oc PR VA Tj w aoe 0 x lt gt 0 1 29V F W w SWAT 7 CI Sahni pune 2 XBUSY 43 CXD2662R ane HA MNT U MNTI SHCK d BIGITAL SSERVO SIGNAL PROCESSOR Es EEP WP B 9 We BIGITAL SIGNAL PROCESSOR n dd cus SER 2 Aa FSA A04 E 0 0
2. BOARD 8 3 8 8 51511 sjele 5 a lt Ned E INI gt CN790 IC390 2 2 x Page47 NJM4558D m3 10k 10k 1 SYS 3 3 de Y C19 B16 0 001 GND LOW PASS FILTER Sh 1 360 2 2 I 0181 NJM2114D R164 C161 R162 2SD1915 F C176 6 108 2200 10k lt P DOWN I R178 T TA S0 15k 1 5k W W lt A1 IN gt 1C641 330 MUTING w a cx GP1F38T a T 4 0p CD 8515 OPTICAL swor 100 Ot Mee te A R514 47 DADT E R516 C515 S y SCLK 100 100p 0 R513 47 ADDT R517 C516 R277 LATCH 100 100p DIGITAL lc lt 9 10k 100k em OUT CH C276 IC360 1 2 C265 100p OPTICAL 22 mue NJM2114D 0 0001 R263 R261 0 680 3 A ADA RESET w H w lt lt w w 10550 R278 0281 0261 SN74HCUD4AN IC621 I y 330 2SD1915 F p GP1F38R T TA S0 92 MUTING lt lt ae W IC500 IC370 1 2 AK4524 PTICAL NJM2114D RECEIVER 1 500 I AD DA 10V L551 I CONVERTER JS DIGITAL IN2 OPTICAL 2SC945TP QP GP1F38R LINE 43 3V AMP REGULATOR OPTICAL SUMPER JUMPER JUMPER RECEIVER 0316 12 IC310 2 2 C213 0 2 Sa NM2114D 22 R 1 3 3 ON OFF 0 gt 0 E DIGITAL 3 IN 2 TET SHK OPTICAL dui 1524 JUMPER 1 L a gt PRE P DOWN 15 16 m w MAIN R212 C212 R213 D212 BOARD IN 15k 22 220k 1SS119 25 18 2 2 me 25V 2 2 3 3842 lt v Vn Pr 19 P age44
3. K K ok OK K K K K K K K K CUSHION FL HOLDER FL lt CAPACITOR gt ELECT CERAMIC ELECT ELECT ELECT CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC lt CONNECTOR gt CONNECTOR FFC LIF NON ZIF 17P CONNECTOR BOARD TO BOARD 8P lt DIODE gt 22uF 0 1uF 10uF 10uF 22uF 0 001uF 0 001uF 39PF 0 1uF 0 001uF 0 001uF 0 001uF 0 1uF 20 20 20 20 10 10 5 10 10 10 LED SEL5821A TP15 MD LP FLUORESCENT INDICATOR TUBE INDICATOR TUBE FLUORESCENT IC IC MSM9201 04GS K TRANSISTOR TRANSISTOR 2SC2603TP EF TRANSISTOR 2SC2603TP EF TRANSISTOR UN4211 TA RESISTOR CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON 2 2K 3 3K 4 7K 10K 33K 2 2K 3 3K 4 7K 10K 33K 100 100 100K 100K 3 3K 100 100 100 100 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Remarks 6 3V 50V 50V 50V 6 3V 50V 50V 50V 50V 50V 50V 50V 50V 1 4W F 1 4W 1 4W F 1 4W 1 4W 1 4W F 1 4W 1 4W F 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W Ref No 5 S 01 S 02 S 03 S 04 S 05 S 06 S 11 S 12 S 13 S 14 S 15 S 16 S 21 Part No 1 249 409 11 1 762 875 21 1 762 875 21 1 762 875 21 1 762 875 21 1 762 875 21 1 762 875 21 1 762 87
4. 16310 lt R E AUDIO INTERFACE AOUTL LOW PASS CONTROLLER TR E MIX AMP FILTER L 1 NY DADT BCK 259 S 10360 uj NC370 2 hg BD SECTION ATTENUATOR CONVERTER m ANALOG OUT BCK SOFT MUTE BLOCK AOUTR si Page 38 MIX AMP er PS LRCK 22 o RV790 10360 e 16370 MUTING BD SECTION SWDT SCLK SWDT 15 CONTROL L Page 38 16 REGISTER T PHONES 7 INTERFACE HEADPHONE X550 MUTING AMP 45 1584MHz CONTROL SWITCH 0380 IC390 BD SECTION 2 Page 38 REMOTE CONTROL RECEIVER 16740 D382 D381 J851 MI A A EXT ON IIC CLK 40 89 24 3 4 88 GRAEN IIC DATA 2 2 S KBDATA m 2 IC DATA 0 5 XIN E KB CLK 60 BUFFER GND X15 021 821 10MHz SYSTEM CONTROLLER CLK 29 9180 O 13 XOUT 1 2 2 CLK CTL 64 PC LINK oc 2 034 KEY BOARD IIC BUSY 03 S es KEYBOARD 9 OB POWER SD a XBUSY TRANSFORMER An RECT Le xD J ROTARY C766 R766 ENCODER REC 600 2 2 3 3V RECT FL LED DRIVER S 515 Pes OSC pil p409 wD406 1 isum 10760 4 EY 7 POWER BACKUP D4og CN406 TRANSFORMER L S713 16406 LITHIUM 501 535 536 9 001 2 D733 FL DRIVE aay RESET BATTERY Q761 32V LED DRIVE GROUP Y 0733 32V d V FL DRIVER IC760 B PATE CD CN lt id O AC D726 LED DRIVE KKI AMS P
5. N tt 5 VREF SCRI PARA 11 DECODE APCREF 2 DH 13 14 19 9 40 48 9 909 00 2209 00 fall gt lt rr gt ET 50 50 CXD2662R BD BOARD 6151 O c 5 0099 CD LLI N LLI 5 5 2 ui ul FF o MNTI MONITOR CONTROL BLOCK SPINDLE SERVO 1 8 DODA AUTO SEQUENCER ADIP D ae LL LL 5 rs Q 3 x c C gt lt lt D lt Titi DEMODULATOR DECODER GENERATOR A D CONVERTER EACH BLOCK DIGITAL AUDIO RATE I F CONVERTER DATAI 22 LRCKI 23 XBCKI 24 ADDT 25 IC141 R CAPA amp 2 CHARGE PUMP 056 GND co gt 8 IN2R INTERFACE INTERFACE ATRAC ATRAC3 SHOCK RESISTANT MEMORY CONTROLLER SAMPLING EFM ACIRC ENCODER DECODER ANALOG ENCODER DECODER N gt 28 B3 IN2F 9 OUT2F Y PREDRIVE PGND1 SG OUTIF B vt INF PREDRIVE d LL lt VM4 OUT4F VM34 OUT3R S PEND3 OUT3F S 5 a a gt INIR INTERFACE VDD PREDRIVE
6. 8 TT 9 2 1 T 1 4 DISPLAY BOARD uui E CES terrin dibus E PPP JaN AS NG 62 Ile WI fo SU 7 P ME XI 5 T IT Ng Bs AS CO dE I 5723 ie O REPEAT m D 0 eR7M on KEY SW BOARD PC LINK KEY BOARD 1790 PHONES J 80 1 681 744 11 l 3 1 q 5 5 a P 4 ee 79 E E AL N A lt YW 1 681 741 O N 7 ae I TN MDS JE770 Semiconductor Location E I NA 09 C F A E E A A B MNNOO 46 46 MDS JE770 6 10 SCHEMATIC DIAGRAM DISPLAY SECTION 1 2 3 4 5 6 KEY SW BOARD DISPLAY BOARD 16740 NJL74H400A S724 IC740 LEVEL DISPLAY CHAR REMOTE R726 R725 R724 R723 R722 JW 47k 47 33k 2 2K RECEIVER M d S726 4 d 5723 1 722 B 9 9 9 CN720 KEY 3 KEY 3 I BP KTIME
7. Ka O Spindle servo drive PWM output Spindle servo drive PWM output FE Sled servo drive PWM output I S Test input Fixed at L 96 98 TESTI to TEST3 1 DVSS Ground Digital EFMO ES EFM output when recording Abbreviation EFM Fight to Fourteen Modulation 55 MDS JE770 G e e G o o Tl 0 lt o m O O 2 J O gt lt gt J 5 FLDT Serial data signal output to the display driver FLCK 1 1 SIRCS Serial clock signal output to the display driver L Active A Control input Remote control input Not used BYTE CNVSS XIN T XOUT T S RST XOUT Data bus changed input Connected to ground Ground 10 11 12 13 Not used open Not used open System rest input L reset Main clock output 10MHz Ground Main clock input 10MHZz Power supply 3 3 V Fixed at H Digital In U bit format or MD format subcode Q sync SCOR input to CXD2662R Power down detection input L Power down Subcode Q SCOR sync input from CXD2662R Keyboard clock output Q UA Z C M DQSY P DOWN SQSY KB CLK KB DATA BUSY Al OUT XINIT BEEP LRCKI IIC POWER IIC CLK IIC DATA SWDT SRDT SCLK KB CLK CTRL CLIP TX CLIP RX XBCKI MUTE ADA RESET ON lt Q Z 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 3
8. METAL metal film resistor METAL OXIDE Metal Oxide film resistor F nonflammable Ref No Part No Description A 4725 471 A BD BOARD COMPLETE lt lt ok lt gt lt gt 2k ok ok k ok ok ok OK K ok ok ok lt CAPACITOR gt C101 1 135 259 11 TANTAL CHIP 10uF C102 1 135 259 11 TANTAL GHIP 10uF C108 1 162 970 11 CERAMIC CHIP 0 01uF C104 1 164 227 11 CERAMIC CHIP 0 022uF C105 1 115 416 11 CERAMIC CHIP 0 001uF C106 1 162 970 11 CERAMIC CHIP 0 01uF C107 1 162 970 11 CERAMIC CHIP 0 01uF C108 1 162 969 11 CERAMIC CHIP 0 0068u C109 1 164 677 11 CERAMIC CHIP 0 033uF C110 1 163 038 00 CERAMIC CHIP 0 1uF C111 1 117 720 11 CERAMIC CHIP 4 7uF C112 1 110 563 11 CERAMIC CHIP 0 068uF C113 1 162 968 11 CERAMIC CHIP 0 0047u C114 1 125 837 11 CERAMIC CHIP 1uF C115 1 162 966 11 CERAMIC CHIP 0 0022u C116 1 164 227 11 CERAMIC CHIP 0 022uF C117 1 162 970 11 CERAMIC CHIP 0 01uF C118 1 165 176 11 CERAMIC CHIP 0 047uF C119 1 165 176 11 CERAMIC CHIP 0 047uF C120 1 164 156 11 CERAMIC CHIP 0 1 C121 1 164 156 11 CERAMIC CHIP 0 1uF 6125 1 117 720 11 CERAMIC CHIP 4 7uF C128 1 164 156 11 CERAMIC CHIP 0 1 C131 1 117 720 11 CERAMIC CHIP 4 7uF 0132 1 164 156 11 CERAMIC CHIP O 1uF C133 1 164 156 11 CERAMIC CHIP C141 1 126 206 11 ELECT CHIP 100uF C142 1 164 156 11 CERAMIC CHIP O 1uF C143 1 164 156 11 CERAMIC CHIP 0 1 C144 1 162 970 11 CERAMIC CHIP 0 01uF 6145 1 164 156 11 CERAMIC CHIP O 1uF C151 1 117 370 11 CERAMIC CHIP 10
9. 3 2 C118 0 047 iev R121 4 7K z DE 1 16W Q131 134 S 120 0 MOBULE gt 1Z16N 2 SWITCH PES 3 4 WAVEFORM zt kiss SHAPPER V SIR 2 2k E E R138 dn d T UR C128 2 3 CN101 D D 21P F V RF gt lt 2 gt gt y 91 VEE d 9133 R119 4 7k 1 15W FEO FEI 20 E 0 214 ABCD 5 gt 5 2 C119 C117 TP144 TP145 B 5 25 0 047 16V s 0 0 FE PT gt E w R125 330 1 16W SEO SEI 17 F VC VC ns 8 1 A 16 y TIP149 A R124 100 1 14W OPTICAL 5 VC ot TE 10 gt PICK UP A TP1469 R125 O TP148 BD SJE 6 TE D E B e BOARD KMS 260B 260E 12 J m N 5 Hr vec 9 2 2 gt c LD GND 5 gt ILCC Page 42 MOD s X ABFG5 lt 11 gt 7 VR p lt FONT gt Pr iy 6 PB XLRF lt 13 gt E 5 2 TP141 gt x Uie y OTP101 1 0 RF AMP gt hs FOCUS TRACKING UN5113 TX ERROR AMP LASER ON 1289 7 gt F SWITCH 8 5 5 gt N Tx ND BD m m E BOARD cm C105 lt 20 gt G I 10009 25V CH 2 2 ed R108 10k 2 Page 42 0101 155355 1 FOCNT 6 TEMP SENSOR C107 lt I 0 01 ZN TP123 ny m te 1144 H 4 000 60 lt 0 8 gt 0 QD MOTOR T I VM4 04 d JA iy o 00
10. PREDRIVE INTERFACE PSB PSB Omo 55 AVDD 53 ASYO MDS JE770 IC500 AK4524 MAIN BOARD CLOCK GENERATOR CLKO amp DIVIDER M S REGISTER 17 CS INTERFACE 16 CCLK 15 CDTI IC440 M54641L MAIN BOARD 421 M5293L MAIN BOARD GND 2 REFERENCE VOLTAGE 3 vour REFERENCE VOLTAGE OVERHEAT OVERCURRENT 0 LIMITTER 51 MDS JE770 6 14 IC PIN FUNCTION DESCRIPTION 6101 CXA2523AR RF Amplifier BD BOARD Pin No Description 1 I V converted RF signal I input ve TO Mi oi veg Co m ol 0 Reference vete su orne eper ser Latch signal input from the CXD2662R L Latch Stand by signal input L Stand by x wur O Reference voltage ouput Nowe WBLADJ Center frequency setting pin for the internal circuit BPF22 3 O racking enor signal oporo me CxDDE OT External capacitor connection pin for the sled error signal LPF ss O siea opuro me exor 00000 Lap O ET spe _ ADAGC capacitor connection pin for AGC of ADTP T I o ADFG ADIP duplex signal output to the CXD2662R signal temperature signal output to the CXD2662R F Focus error signal output to the CXD2662R RF ABCD bottom hold signal output to the CXD2662R ABCD EN Light amount signal output to the CXD2662R O RF ABCD peak hold signal
11. x SCL 22 TESI 5 8 id R165 100 1 15W cs a CE i 0 g G prs E 6 165 100 1 16W E Xo ADDT h SH MPR HS x LRCK AT BD im 00 DODO IC190 irem 157 SS 100 3 SVREG BOARD 5 SEEMS ow 2 Veles Y lt AW T lt fa elejel l ijun 8 in N 1 2 5 5 Ens MCKGNB NISISISISISIS TP168 121 100 MCLK slelelelel l O Duh 6 5 5 5 Page 41 iie in in gt We 8 6NB C cC trc s 4 3 ERR Lo TS i O Mum D 3V 10 10V F MAIN te mae C192 C191 TER GNB 5 106 amp 3V LRCKI A2 3V AST E GND E AGNB BABTI JW903 0 5V LpD 3V LB GND BOUT H 5V BIG RST HGND B MGND DINI in 5 BOARD 1 2 e E CN1 Page 43 lt 24 NIN A a a a E NG BD BOARD i 1 2 J Page 41 Q H 5V IC171 DIVIDER UV over wie Joas 1 44 HEAD DRIVE NS 0 0 lt gt Le T Eom e gt 1C181 Ep OVER WRITE 3 1184 184 y 9185 0 0 2 5 HEAD BRIVE F51J c 0 0 lt gt 0 5 0 L lt gt 0 C180 AN 0 964 1 16W l 2SK1764KYTR Lee A iid L180 1 15W L183 42 42 MDS JE770 6 6 S
12. 1 249 429 11 1 249 441 11 1 249 441 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 441 11 1 249 588 91 1 249 951 11 1 247 887 00 1 249 520 11 1 215 445 00 1 215 445 00 1 215 445 00 1 215 445 00 1 215 453 00 1 215 453 00 1 215 425 00 1 215 425 00 1 249 919 11 1 249 469 11 1 247 706 11 1 249 429 11 1 249 429 11 1 249 397 11 1 249 588 91 1 249 951 11 1 247 887 00 1 249 520 11 1 215 445 00 1 215 445 00 1 215 445 00 1 215 445 00 1 215 453 00 1 215 453 00 TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR lt RESISTOR gt CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON METAL METAL METAL METAL METAL METAL METAL METAL CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON METAL METAL METAL METAL METAL METAL 250945 2962603TP EF 2962603TP EF 2962603TP EF 29D21445 TP UVVV 100 4 7K 10K 10K 10K 10K 10K 100K 10K 10K 10K 10K 10K 10K 10K 10K 10K 100K 100K 10K 10K 10K 10K 10K 100K 33K 15K 220K 10K 10K 10K 10K 22K 22K 1 5K 1 5K 680 100K 330 10K 10K 33K 15K 220K 47 10K 10K 10K 10K 22K 22K 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
13. 5 6 3 lop Compare see page 28 5 6 4 Auto Check see page 29 Note The criteria for determination above is intended merely to determine if satisfactory or not and does not serve as the specified value for adjustments When performing adjustments use the specified values for adjustments FORCED RESET The system microprocessor can be reset in the following procedure Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor etc Procedure Remove the short pin attached to CN406 and then attach it again MAIN BOARD Component Side 20 406 MDS JE770 RETRY CAUSE DISPLAY MODE n this test mode the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube During playback the track mode for obtaining track information will be set This is useful for locating the faulty part of the unit The following will be displayed During recording and stop Retry cause number of retries and number of retry errors During playback Information such as type of disc played part played copyright These are displayed in hexadecimal Procedure 1 Insert the recordable disc 2 Press button to display Edit Menu on the fluorescent display 3 Turn button to display All Erase on the fluorescent display 4 Press YES button to display All Erase on the fluorescent display 5 Press YES button Complete is displ
14. Rotate the knob and display CPLAY1 MODE C34 Press the button twice and CPLAY1 MID The display changes to Hui AD iH Check that the C error rate is below 20 Press the MENU NO button stop playback press the EJECT button and remove the test disc QN 5 14 2 MO Error Rate Check Checking Procedure 1 Load a continuously recorded test disc MDW 74 GA 1 Refer to 5 5 Using the Continuously Recorded Disc 2 Rotate the knob and display CPLAY1 MODE C34 Press the YES Jbutton and CPLAY1 MID The display changes to C Gu AD LHP If the C error rate is below 20 Check that ADER 18 00 Press thej MENU NO button stop playback press the EJECT button and remove the test disc NM 5 15 FOCUS BIAS CHECK Change the focus bias and check the focus tolerance amount Checking Procedure 1 Load a continuously recorded test disc MDW 74 GA 1 Refer to 5 5 Using the Continuously Recorded Disc 2 Rotate the knob and display CPLAY1 MODE C34 3 Press the button twice and display CPLAY1 MID 4 Press the button when FEE AD 7 is displayed 5 Rotate the knob and display FBIAS CHECK C16 6 Press the button and display 8 81 ci The first four digits indicate the C error rate the two digits after indicate ADR and the 2 digits after c indicate the focus bias value Check th
15. S26 6 FU S27 57 89 H 29 SE627 S28 REP 1760 RA se 34 SAN E ce0 Ps SEG29 227 8a on 1C760 su 3 6 Bes r 4 wu us 33 SEG31 FL LED s32 727 af M Jj Jj R767 100 S33 ih Dig at SEG33 R766 3 3k C770 35 We C768 C769 0 001 4 26 2 1 C767 0 001 0 001 36 SEG34 S35 S act 39 01 37 SEG35 0762 S P nn 2 2532 6 S 2SC2603TP EF ga 2a S G01 8 39 00 01 56 4624 FL DRIVE m 761 602 304 38 023 2SC2603TP EF KB BOARD PC LINK ost co ia S SG A a FL DRIVE e erc Uy ae I cra cere KEY BOARD po NE C om ES OS C gt E 7 e e C GO e 69 52 6 6 Oo 62 o Q 62 e o0 C R786 ween L785 TO uu usu GT EIN SUNS EK S2Y 69 9 6 2 I CO CO CO CO CO CO OO CO CO TO I I I I I 1 1 I I I I 1 1 1 I 1 1 I I I I J L1782 JUMPER JUMPER WW LO eo N gt LO CD N q N 3 s 3 S S S 5 S 5 5 5 5 5 5 5 l 2 2 22 22 J CN2780 6P L1784 JUMPER K KE STBY 5V IIC CLK DATA W I NES MAIN 2 2 s
16. or IC195 5 10 LASER POWER ADJUSTMENT See page 31 NO Replace OP IC102 IC190 YES 5 11 Iop NV SAVE See page 32 or IC195 Dci AK NO 5 12 TRAVERSE ADJUSTMENT See page 32 Replace OP IC101 IC151 5 13 FOCUS BIAS ADJUSTMENT See page 33 or IC195 5 16 AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT See page 34 YES OP change in Err Display mode Replace OP on Iop write NO YE Replace the spindle motor B Spdl change in Err Display mode NO 5 6 4 Auto Check See page 29 End adjustments 26 5 2 PRECAUTIONS FOR CHECKING LASER DIODE EMISSION To check the emission of the laser diode during adjustments never vlew directly from the top as this may lose your eye sight 5 3 PRECAUTIONS FOR USE OF OPTICAL PICK UP KMS 260B 260E As the laser diode in the optical pick up is easily damaged by static electricity solder the laser tap of the flexible board when using it Before disconnecting the connector desolder first Before connect Ing the connector be careful not to remove the solder Also take adequate measures to prevent damage by static electricity Handle the flexible board with care as it breaks easily pick up flexible board laser tap Optical pick up flexible board 5 4 PRECAUTIONS FOR ADJUSTMENTS 1 When replacing the following parts perform the adjustments and checks with in the order shown in the following table 2 Set the test mode when perform
17. wasw L783 0751 C753 BOARD gt Page44 JUMPER L N e m i a m uas SS s J790 ORESCENT PHONES I DICATOR TUBE MAIN 1 2 M BOARD CN390 CN790 WIRE 3P C796 Page43 GP 470p I PHONE LEVEL es s tt H ee LLLA CHASSIS MDS JE770 6 11 PRINTED WIRING BOARD POWER SECTION See page 36 for Circuit Board Location model is printed diagram 1 2 3 4 5 6 7 80 0 PT BOARD TR950 ii w 4 NONG w 9 OU P VOL SEL BOARD SP MAIN BOARD CN400 Page 45 AG IN S990 VOLTAGE SELECTOR 220 240V gt 0 e e ee SS SS ON x N S i Se 48 48 MDS JE770 6 12 SCHEMATIC DIAGRAM POWER SECTION OP A im wh a AN 0 CN950 CN990 PI BOARD AA WIRE 5P 5990 ZN oH S s O 0 0 j SEI 110 120V N gt lt p e N tr 3d 270 240 JW903 VOL SE
18. 10V C111 1 136 356 11 MYLAR 470PF 5 50V C522 1 164 159 11 CERAMIC 0 1uF 50V C112 1 126 049 11 ELECT 22uF 20 25V C523 1 104 665 11 ELECT 100uF 20 10V C113 1 126 049 11 ELECT 22uF 20 25V 6524 1 164 159 11 CERAMIC 0 1uF 50V C161 1 137 505 11 MYLAR 220PF 5 50V C530 1 164 159 11 CERAMIC 0 1uF 50V 6165 1 137 503 11 MYLAR 0 0001uF 5 50V C531 1 164 159 11 CERAMIC 0 1uF 50V 6166 1 137 503 11 MYLAR 0 0001uF 5 50V C532 1 164 159 11 CERAMIC 0 1uF 50V C171 1 137 368 11 MYLAR 0 0047uF 5 50V C536 1 164 159 11 CERAMIC 0 1uF 50V 67 MDS JE770 Ref No C550 C551 0552 0553 0554 0555 0556 0557 0601 0611 0612 0613 0621 0622 0623 0631 0641 0642 0651 0652 0657 0658 0851 C852 C853 C854 C855 C930 C931 C932 C940 C941 C942 CN2 CN3 CN390 CN400 CN406 CN830 D111 D112 D211 D212 D381 D382 D401 D402 D403 D404 D406 D408 D409 D411 D412 68 Part No 1 164 159 11 1 104 665 11 1 164 159 11 1 162 195 31 1 162 294 31 1 162 203 31 1 162 215 31 1 162 199 31 1 162 306 11 1 164 159 11 1 126 963 11 1 162 306 11 1 164 159 11 1 126 963 11 1 162 306 11 1 164 159 11 1 164 159 11 1 126 963 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 784 417 11 1 779 295 11 1 815 620 11 1 506 468 11 1 691 772 11 1 568
19. 2 Press the button Complete will be displayed momen tarily and initial setting will be executed after which ADJ CLEAR C28 will be displayed 5 8 RECORDING AND DISPLAYING THE lop INFORMATION The IOP data can be recorded in the non volatile memory The Iop value on the label of the optical pick up and the Iop value after the adjustment will be recorded Recording these data eliminates the need to read the label on the optical pick up Recording Procedure 1 While pressing the knob and Wi button con nect the power plug to the outlet and release the AMS gt gt knob and 88 button 2 Rotate the knob to display Service and press the button 3 Rotate the knob to display Iop Write C05 and press the button 4 The display becomes Ref is an arbitrary number and the numbers which can be changed will blink 5 Input the Iop value written on the optical pick up To select the number Rotate the AMS DP knob To select the digit Press the I lt 1 lt AMS DP knob 6 When the button is pressed the display becomes Measu Q is an arbitrary number 7 As the adjustment results are recorded for the 6 value Leave it as it is and press the button 8 Complete will be displayed momentarily The value will be recorded in the non volatile memory and the display will be come Write C05 Display Procedure 1 Rotate the IKA AMS PPT knob to dis
20. 216 821 11 METAL CHIP 1K 5 1 16W L142 1 216 296 91 CONDUCTOR CHIP 0 R136 1 216 295 91 SHORT 0 L143 1 216 296 91 CONDUCTOR CHIP 0 R138 1 216 833 11 METAL CHIP 10K 5 1 16W L144 1 216 296 91 CONDUCTOR CHIP 0 R150 1 216 833 11 METAL CHIP 10K 5 1 16W L145 1 216 296 91 CONDUCTOR CHIP 0 R151 1 216 833 11 METAL CHIP 10K 5 1 16W L146 1 469 855 21 FERRITE 4 1 216 833 11 METAL CHIP 10K 5 1 16W L147 1 469 855 21 FERRITE R155 1 216 864 11 METAL CHIP 0 5 1 16W L161 1 500 245 11 FERRITE R156 1 216 864 11 METAL CHIP 0 5 1 16W L171 1 500 245 11 FERRITE R157 1 216 809 11 METAL CHIP 100 5 1 16W L180 1 469 855 21 FERRITE R158 1 216 809 11 METAL CHIP 100 5 1 16W L181 1 469 855 21 FERRITE 9 1 216 833 11 METAL CHIP 10K 5 1 16W L182 1 500 245 11 FERRITE 0 1 216 833 11 METAL CHIP 10K 5 1 16W L183 1 216 296 11 SHORT 0 R161 1 216 833 11 METAL CHIP 10K 5 1 16W L184 1 216 296 11 SHORT 0 R163 1 216 809 11 METAL CHIP 100 5 1 16W R164 1 216 809 11 METAL CHIP 100 5 1 16W lt TRANSISTOR gt R165 1 216 809 11 METAL CHIP 100 5 1 16W 0101 8 29 403 35 TRANSISTOR UN5113 TX 7 1 216 833 11 METAL CHIP 10K 5 1 16W 0121 8 29 403 35 TRANSISTOR UN5113 TX R168 1 216 845 11 METAL GHIP 100K 5 1 16W 0122 8 29 101 07 TRANSISTOR 25B798 T1DK R169 1 216 855 11 METAL CHIP 680K 5 1 16W 0131 8 729 026 53 TRANSISTOR 2SA1576A T106 QR R170 1 216 827 11 METAL CHIP 3 3K 5 1 16W 0132 8 729 903 10 TRANSISTOR FMW1 T 148 R171 1 216 821 11 METAL CH
21. 25V 10V 630V 6 3V 25V 6 3V 25V 25V 25V 10V MDS JE770 Ref No Part No Description Remarks Ref No Part No Description Remarks 2190 8 759 460 72 60 2 R116 1 216 839 11 METAL CHIP 33K 5 1 16W IC195 8 759 640 41 50 7 2 R117 1 216 837 11 METAL CHIP 22K 5 1 16W R118 1 218 855 11 METAL CHIP 2 2K 0 5 1 16W lt JUMPER RESISTOR gt R119 1 218 863 11 METAL CHIP 4 7K 0 5 1 16W R120 1 218 889 11 METAL CHIP 56K 0 5 1 16W JW201 1 216 295 91 SHORT 0 JW202 1 216 295 91 SHORT 0 R121 1 218 863 11 METAL CHIP 4 7K 05 1 16W JW203 1 216 295 91 SHORT 0 2 1 218 855 11 METAL CHIP 2 2K 0 5 116W JW903 1 216 295 91 SHORT 0 3 1 216 819 11 METAL CHIP 680 5 1 16W JW904 1 216 295 91 SHORT 0 R124 1 216 809 11 METAL GHIP 100 5 1 16W R125 1 216 815 11 METAL CHIP 330 5 1 16W lt COIL gt R126 1 216 819 11 METAL CHIP 680 5 1 16W L101 1 500 245 11 FERRITE 7 1 216 845 11 METAL CHIP 100K 5 1 16W L102 1 500 245 11 FERRITE 8 1 219 724 11 METAL CHIP 1 1 1 4W L103 1 500 245 11 FERRITE 9 1 216 298 00 METAL CHIP 2 2 5 1 10W L105 1 414 235 22 FERRITE R130 1 216 829 11 METAL CHIP 4 K 5 1 16W L106 1 500 245 11 FERRITE R131 1 216 833 11 METAL CHIP 10K 5 1 16W L121 1 500 245 11 FERRITE R132 1 216 841 11 METAL CHIP 47K 5 1 16W L122 1 500 245 11 FERRITE 3 1 216 821 11 METAL CHIP 1K 5 1 16W L131 1 500 245 11 FERRITE R134 1 216 821 11 METAL CHIP 1K 5 1 16W L141 1 216 296 91 CONDUCTOR CHIP 0 R135 1
22. 4 lt 0 5 gt 10 0 8 9 9 15 C144 5 2 e 5 01 2 547 145 0 1 25V F 1 lt 5 5 07 0 2257 R126 R130 0 IC141 IC141 0 lt gt 247k 3 BH6519FS E2 Q122 0121 122 1 16W SPIN LE SLE 25B798 T19 p IC B D MOTOR BRIVER s ue T COIL BRIVER 0 bd x M102 FOR GND TP126 SLED CHECK p MOTOR 3 nja m m 21 gt 2 BD 2 8 BOARD lt 26 gt 2 2 27 gt EE Page 42 Note he components identified by mark N or dotted line with mark are critical for safety Heplace only with part number specified 41 41 MDS JE770 6 5 SCHEMATIC DIAGRAM BD SECTION 2 2 See page 37 for Waveforms See page 53 for IC Pin Functions See page 50 for IC Block Diagrams 1 2 3 4 5 6 1 8 9 10 11 12 13 14 15 16 17 18 I BD BOARD 272 1122 01H ay o TP160 REC SW 105 OO REFRECT SW 25 PROTECT SW 24 B GNB L 9 OUT L8 IN ON Njo T 24 20 qos ins esh mo gt gt gt O O e 5 V 0 lt gt 0 lt gt NINJN CN CN N C194 M103 0 1 25V F
23. 4W 1 4W TAN F 1 4W 1 4W TAN F 1 4W TAN F 14W F 69 MDS JE770 MAIN PT VOL SEL Ref No R912 R1090 X15 X550 Part No 1 249 437 11 1 249 429 11 1 795 004 21 1 781 998 11 Description Remarks CARBON 47K 5 1 4W CARBON 10K 5 1 4W SP lt VIBRATOR gt VIBRATOR CERAMIC 10MHz VIBRATOR CRYSTAL 45 1584MHz OK OK K OK K R OK OK OK OK K k A C910 C923 C924 C951 C952 0 D910 AN LF900 A RY910 AN TR900 AN TR900 A TR950 A TR950 1 681 739 11 1 113 920 11 1 164 159 11 1 164 159 11 1 164 159 11 1 164 159 11 1 580 230 11 8 19 911 19 1 419 625 11 1 55 356 11 1 437 339 11 1 437 340 11 1 437 337 11 1 437 336 11 PT BOARD 2k 2 2k KK KKK lt CAPACITOR gt CERAMIC 0 0022uF 20 250V CERAMIC 0 1uF 50V CERAMIC 0 1uF 50V CERAMIC 0 1uF 50V CERAMIC 0 1uF 50V CONNECTOR PIN CONNECTOR PC BOARD 2P AC IN lt DIODE gt DIODE 1SS133T 2 lt LINE FILTER gt COIL LINE FILTER lt RELAY gt RELAY lt TRANSFORMER gt TRANSFORMER POWER SP TRANSFORMER POWER SP TRANSFORMER POWER AEP UK TRANSFORMER POWER AEP UK S S OK OK K OK K OK OK OK OK OK OK OK OK CN990 A S990 1 681 745 11 1 573 565 11 1 771 474 11 VOL SEL BOARD SP KKK KK ok K ok K
24. 5 5 5 5 5 5 5 5 5 5 1 1 1 1 1 1 1 1 5 5 5 5 5 5 5 5 5 5 1 1 1 1 1 1 1 4W 1 4W F 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W AEP UK 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W F 1 4W 1 4W 1 4W F 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W R271 R272 R276 R277 R278 R281 R290 R291 R380 R381 R406 R407 R421 R423 R424 R425 R431 R432 R433 R434 R435 R436 R437 R441 R442 R443 R491 R492 R511 R512 R513 R514 R515 R516 R517 R551 R552 R554 R556 R613 R614 R623 R624 R631 R632 R821 R822 R823 R824 R825 R826 R827 R828 R851 R852 R853 R854 R911 1 215 425 00 1 215 425 00 1 249 919 11 1 249 469 11 1 247 706 11 1 249 429 11 1 249 429 11 1 249 397 11 1 249 441 11 1 247 883 00 1 249 409 11 1 249 429 11 1 249 433 11 1 249 441 11 1 249 409 11 1 249 409 11 1 247 807 31 1 249 415 11 1 249 409 11 1 249 433 11 1 249 438 11 1 247 891 00 1 249 417 11 1 249 433 11 1 249 431 11 1 249 433 11 1 249 411 11 1 249 418 11 1 249 401 11 1 249 401 11 1 249 401 11 1 249 401 11 1 247 807 31 1 247 807 31 1 247 807 31 1 247 903 00 1 249 411 11 1 247 807 31 1 247 807 31 1 247 895 00 1 249 437 11 1 247 895 00 1 249 4
25. 75 ohms Rated input 0 5 Vp p 20 DIGITAL OPTICAL IN DIGITAL COAXIAL IN Outputs PHONES Jack type stereo phone Rated output 28 mW Load impedance 32 ohms Jack type phono Rated output 2 Vrms at 50 kilohms Load impedance over 10 kilohms DIGITAL OPTICAL OUT Connector type square optical Rated output 18 dBm Load impedance 660 nm optical wave length ANALOG OUT Continued on next page MINIDISC DECK SONY MDS JE770 General Supplied accessories Power requirements Audio connecting cords 2 Optical cable 1 230 V AC 50 60Hz Remote commander remote 1 European model Other models 110 120 220 240 V R size AA batteries 2 AC 50 60Hz Adjustable with voltage selector 15 W 0 5 W in standby mode 430 X95 X285 mm w h d incl projecting parts and controls 3 kg Power consumption Dimensions approx Mass approx SELF DIAGNOSIS FUNCTION The self diagnosis function consists of error codes for customers which are displayed automatically when errors occur and error codes which show the error history in the test mode during servicing For details on how to view error codes for the customer refer to the following box in the instruction manual For details on how to check error codes during servicing refer to the following Procedure for using the Self Diagnosis Function Error History Display Mode Three or five digit code Message Sel
26. K K K K lt CONNECTOR gt PIN CONNECTOR 5P SP lt SWITCH gt SWITCH POWER VOLTAGE SELECTOR SP OK OK OK OK OK OK OK OK OK OK KK KK KK OK OK K 2k 2k 70 Ref No 9 10 A12 14 AN 17 AN 17 63 391 358 FL 50 M101 M102 M103 5102 A TR900 AN TR900 Part No 1 792 811 11 1 757 928 11 1 777 071 41 1 569 972 21 1 569 008 21 1 770 019 11 1 757 930 11 1 678 514 11 Description Remarks MISCELLANEOUS K ok K ok K K K ok K WIRE FLAT TYPE 23 CORE WIRE FLAT TYPE 27 CORE CORD POWER SOCKET SHORT 2P ADAPTOR CONVERSION SP ADAPTOR CONVERSION PLUG 3P UK VVIRE FLAT TYPE 17 CORE FLEXIBLE BOARD 4672 541 OPTICAL PICK UP 5 260 1 517 987 11 INDICATOR TUBE FLUORESCENT 4672 898 MOTOR ASSY SPINDLE A 4735 076 A MOTOR ASSY SLED 4735 074 MOTOR ASSY LOADING 1 771 957 11 1 437 339 11 1 437 340 11 SWITCH PUSH 2 KEY REFLECT PROTECT SW TRANSFORMER POVVER AEP UK TRANSFORMER POVVER SP OK OK OK OK OK OK OK OK OK OK OK OK 1 476 723 11 1 574 264 11 1 791 732 11 4 233 926 11 4 233 926 21 4 233 926 31 4 233 926 41 4 233 926 51 4 233 926 61 4 228 696 01 ACCESS
27. SS JUMPER ge REG GND 14 16 TIMER L451 STE 35 y JUMPER o 13 15 PDOWN 2 14 SYS 3 3V E 13 AC gt 9 10 DISPLAY 12 AC 0380 Ons su ir gt unin s CN700 L450_JUMPER MUTING ae 3 2 3 2 3 2 0 Prorecr 0698 my 8 10 DISP GND C 0 i 1 JUMPER 0 1 FLCS 3 2 SWITCH lt 1 2 gt 4 6 8 FLCS 0 10P L DINT H CLIP Page47 gt T FLCK 160881 FL IT C89 0 001 1 6 uum EPM 41 DINI 5 C88 NX gt lt 2 SYSTEM Kevo 001 AE CONTROLLER M GND 5 5 ADA RESET C651 1651 C652 1060 KEY 3 vure 5 01 JUMPER Qi M 5V 2 e 0 317 us pr 5 J evi CLIP RX KEY 2 HEADPHONE DINO J lt lt AMP KEY 0 4 rat eso EI 150k 22 1 0 1C600 SN74HCUO4AN 1 I 0290 5 JUMPER R435 R436 WAVE 28D1915 F 9 g 56k 330k SHAPER T TA SO IC390 1 2 MUTING NJM4558D Kz0X21 X22X23X24 X25X26 29 100 M CN390 L390 E 3P JUMPER m L Ss _ R380 11 8 190 100k 0190 lt 10k sn p MuUTING 22 0 T W 5 l W lt gt lt HP 0 0
28. are criti cal for safety Replace only with part number specified m B Line B Line adjustment for repair Voltages and waveforms are dc with respect to ground under no signal detuned conditions no mark STOP PLAY lt gt REC Impossible to measure Voltages are taken with a VOM Input impedance 10 MO Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal produc tion tolerances Circled numbers refer to waveforms Signal path y gt PB NP REC PB DIGITAL OUT REC DIGITAL IN Abbreviation SP Singapore model For printed wiring boards Note e 0 parts extracted from the component side parts extracted from the conductor side e O Through hole e ccc Pattern from the side which enables seeing The other layers patterns are not indicated Caution Pattern face side Parts on the pattern face side seen from the Side B pattern face are indicated Parts face side Parts on the parts face side seen from the Side A parts face are indicated o oNo B C E T _ These are omitted o o o B C E t i These are omitted These are omitted 3 WAVEFORMS BD Board 1 IC101 69 RF NR N NN aua WY SS 6666 2 101 FE Play mode 3 IC101 TE Play mode
29. errors Displays total xx This is displayed in hexadecimal from 00 to FF err history Displays the past ten errors Displays Ox ErrCd X is the history number The younger the number the more recent is the history 00 is the latest is the error code Select the error history number using the lt KI4 AMSDDIl knob retry adrs Displays the past five retry addresses Displays xx ADRS yyyy xx is the history number yyyy is the cluster with the retry error Select the error history number using the 1 gt 1 gt 1 15 lt lt 1 knob er refresh Mode for erasing the error and retry address histories Procedure 1 Press the knob when displayed as er refresh 2 Press the button when the display changes to er refresh When complete is displayed it means erasure has completed Be sure to check the following after executing this mode Data has been erased Perform recording and playback and check that the mechanism is normal tm change Mode for erasing the total time of recording and playback Procedure 1 Press the IKKQAMSE gt gt 1 knob when displayed as tm refresh 2 Press the button when the display changes to tm refresh When complete is displayed it means erasure has completed op change Mode for erasing the total time of op rec tm op play tm These histories are based on the time of replacement of the optical pickup If the optical pick up has been replaced perform this procedu
30. output to the CXD2662R 27 28 Ux 77 peace tal aning urt RE AGE ret OT a como er comuror pu qsas lt sa5 x mo umanan 2 _ 48 as MORFO Groove signal output Abbreviation APC Auto Power Control AGC Auto Gain Control 4 4 4 4 4 52 MDS JE770 e C151 CXD2662R Digital Signal Processor Digital Servo Signal Processor BD BOARD 2 MNTI SHCK Track Jump detection signal output to the system control 5 mie sae fescue com sna oni ______ om GW OOOO 9 Sms Ima sans SENSE enon Reset signal input from the system control L Reset Subcode Q sync SCOR output to the system control L is output every 13 3 msec Almost all H is output Digital In U bit CD format or MD format subcode Q sync SCOR output to the system control Laser power switching input from the system control Recording L Playback ON EN KA KA Serial data input LR clock input Lch L R ch Daut oh DA converer _ Ee u he AD and DA ame GE gj TT 0 Bu ok ouput the AD and D A convener O arruwa www jun a _ o DRAM adres oupu I 7 Ta O ad owas Ground Digit aa Lo cam pue PRAM O Address outputforDRAM 0 eass RAS signal output for DRAM Writ
31. the PIKA AMS DODA button or MENU NO button to display Read C26 Then press the REPEAT button MDS JE770 OPTICAL PICK UP BLOCK TYPE DISCRIMINATION There are two types of the optical pick up block in this model These are compatible except for the laser power Check the type of the optical pick up block before replacement Ajdust following items after replacing the optical pick up block 5 6 2 Laser Power Check See page 28 5 10 LASER POWER ADJUSTMENT See page 31 Differences KMS 260B KMS 260E Form of FPC retainer plate Close the hole on SL base Not close the hole on SL base Big variable resistor 3 type and chip resistor Fig A Avon e Small variable resistor 2 type and chip resistor Fig B Fig B type is for repair Abbreviation 260B KMS 260B model 260E KMS 260E model KSN 260B KSN 260E Hold on SL base SG4 Hold on SL base FPC retainer plate APC variable Adhesive agent at resistor PDIC portion Adhesive agent at FPC retainer plate PDIC portion Fig A CHIP 3 type variable resistor Fig B CHIP 2 type variable resistor MDS JE770 CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS Before performing repairs perform the following checks to determine the faulty locations up to a certain extent Details of the procedures are described in 5 Electrical Adjustments 5 6 2 Laser power check see page 28
32. vice versa MO pit and CD 00008 h OOO0a O000 MO groove h Indicates the header address s Indicates the SUBQ address a Indicates the ADIP address Detrack check display Not used in servicing IVR display Not used in servicing C1 error and Jitter display Not used in servicing AD error and Jitter display Not used in servicing Note is displayed when the address cannnot be read 23 MDS JE770 4 8 MEANINGS OF OTHER DISPLAYS Contents When Lit Servo ON Servo OFF Tracking servo ON Recording mode ON SYNC CLV low speed mode L SYNC ABCD adjustment completed Recording mode OFF CLV normal mode Tracking offset cancel OFF Tracking offset cancel ON Tracking auto gain OK Focus auto gain OK High reflection Groove Low reflection CLV A CLV UNLOCK 4 9 AUTOMATIC SELF DIAGNOSIS FUNCTION This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick up To perform this test mode the laser power must first be checked Perform AUTO CHECK after the laser power check and Iop compare Procedure 1 Press the button If LDPWR 7 x7 is displayed it means that the laser power check has not been performed In this case perform the laser power check and Iop compare and then repeat from step 1 2 If a disc is in the mechanical deck it will be ejected forcibly DISC IN will be displayed in this case
33. wave form so that the specified value is satisfied as much as possible Read power traverse adjustment Traverse Waveform vc 1 A Specification 7 Press the button and save the result of adjustment to the 8 Rotate thej lt lt AMS DP knob so that the waveform of the oscilloscope becomes the specified value MO W changes and the waveform changes In this adjustment waveform varies at intervals of approx 2 Adjust the wave form so that the specified value is satisfied as much as possible Write power traverse adjustment Traverse Waveform vc Specification 9 Press the button and save the adjustment results in the The optical pick up moves to the pit area automatically and servo is Imposed 11 12 13 14 15 16 17 18 19 Rotate the knob until the vvaveform of the oscilloscope moves closer to the specified value In this adjustment vvaveform varies at intervals of approx 290 Adjust the vvaveform so that the specified value is satisfied as much as possible Traverse Waveform mat tig Mu H TI I Specification B UJ Press the button and save the adjustment results in the non volatile memory EFB iii SAVE will be displayed for a moment Next EF MO ADJUS C07 is displayed The disc stops ro tating automatically Press the button and remove the disc Load the check di
34. 1 01 4 996 686 01 1 57 930 11 4 231 928 01 4 231 928 11 3 354 981 11 1 517 987 11 MDS JE770 Remarks Description KNOB TIMER SILVER KEY SW BOARD DISPLAY BOARD COMPLETE AEP UK DISPLAY BOARD COMPLETE SP CUSHION FL HOLDER FL WIRE FLAT TYPE 17 CORE KNOB AMS BLACK KNOB AMS SILVER SPRING SUS RING INDICATOR TUBE FLUORESCENT 61 MDS JE770 7 3 MECHANISM SECTION 1 MDM 7A Ref No 301 302 303 304 305 306 307 308 309 310 62 Part No 4 996 267 01 4 231 319 01 4 221 007 01 4 221 025 01 3 372 761 01 4 227 002 01 4 226 999 01 4952 665 1 A 4672 990 F 4 229 533 01 Description Remarks BASE BU D SCREW 2X6 CZN P TRI GEAR SB BELT LOADING SCREW M1 7 TAPPING GEAR PULLEY LEVER HEAD SPRING SHT ASSY LEAF LOCK HOLDER SPRING STOPPER TORSION Ref No 311 312 313 314 315 316 317 318 319 320 Part No 4 231 118 01 4 221 019 02 4 221 013 01 4 226 995 01 4 226 996 01 4 226 997 04 4 226 998 01 4 221 006 01 4735 075 4 226 994 01 Description Remarks SPRING HOLDER TENSION PLATE HOLDER ASSY RETAINER SPRING EJ TENSION SLIDER EJ LIMITTER EJ SLIDER LEVER CHG GEAR SA HOLDER ASSY GUIDE L MDS JE770 7 4 MECHANISM SECTION 2 MDM 7A M102 351 not supplied The components identified by mark A or dotted line with ma
35. 3 1 762 875 21 SWITCH KEYBOARD GROUP 6441 1 126 933 11 ELECT 100uF 20 16V S746 1 786 174 11 SWITCH SLIDE TIMER REC OFF PLAY C442 1 162 306 11 CERAMIC 0 01uF 30 16V 2k ok lt gt lt gt gt ok ok of of k lt gt lt gt ok ok E lt gt lt gt lt gt lt gt ok lt gt lt gt ok ok lt gt lt gt ok ok ok OK ok ok ok Ok K 6461 1 126 040 11 ELECT 1000uF 20 35V A 2007 925 A MAIN BOARD COMPLETE AEP UK C466 1 126 040 11 ELECT 1000uF 20 35V A 2007 931 A MAIN BOARD COMPLETE SP 490 1 126 916 11 ELECT 1000uF 20 6 3V 6491 1 164 159 11 CERAMIC 0 1uF 50V 7 685 646 79 SGREVV BVTP 3X8 TYPE2 TT B 6492 1 164 159 11 CERAMIC 0 1uF 50V 6500 1 126 934 11 ELECT 220uF 20 10V lt CAPACITOR gt C501 1 164 159 11 CERAMIC 0 1UF 50V C12 1 164 159 11 CERAMIC 0 1uF 50V C502 1 137 366 11 MYLAR 0 0022uF 5 50V C16 1 164 159 11 CERAMIC 0 1uF 50V C503 1 137 366 11 MYLAR 0 0022uF 5 50V C19 1 162 294 31 CERAMIC 0 001uF 10 50 C504 1 124 994 11 ELECT 100uF 20 10V C58 1 162 282 31 CERAMIC 100PF 10 50V C505 1 164 159 11 CERAMIC 0 1uF 50V C62 1 164 159 11 CERAMIC 0 1uF 50V C515 1 162 282 31 CERAMIC 100PF 10 50V C87 1 162 306 11 CERAMIC 0 01uF 3096 16V C516 1 162 282 31 CERAMIC 100PF 10 50V C88 1 162 306 11 CERAMIC 0 01uF 30 16V C517 1 162 282 31 CERAMIC 100PF 10 50V C89 1 162 294 31 CERAMIC 0 001uF 10 50 C519 1 162 294 31 CERAMIC 0 001uF 10 50V C100 1 126 964 11 ELECT 10uF 20 50 C520 1 126 934 11 ELECT 220uF 2096
36. 37 11 1 247 804 11 1 249 417 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 425 11 1 249 429 11 1 249 429 11 1 249 425 11 1 249 429 11 1 249 426 11 1 249 425 11 1 249 429 11 1 249 393 11 1 249 421 11 METAL METAL CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON 1 5K 1 5K 680 100K 330 10K 10K 22 100K 150K 220 10K 22K 100K 220 220 100 680 220 22K 56K 330K 1K 22K 15K 22K 330 1 2K 47 47 47 47 100 100 100 330 100 100 470K 47K 470K 47K 15 1K 10K 10K 10K 4 7K 10K 10K 4 7K 10K 0 6K 4 7K 10K 10 2 2K MDS JE770 5 5 5 5 5 5 5 5 5 5 5 5 5 5 1 4W 1 4W 1 4W 1 4W TAN F 1 4W 1 4W TAN F 1 4W 1 4W TAN F 1 4W 1 4W 1 4W TAN F TAN F 1 4W TAN F TAN F 1 4W 1 4W 1 4W TAN F 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W Tl TI TI 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W 1 4W AEP UK 1 4W F AEP UK 1 4W 1 4W 1 4W TAN F 1
37. 4 1 151 69 OSCI 22 nesc 5 IC151 LRCK 22 6 usec 6 ic151 amp XBCK C 3 8Vp p 354 nsec 7 ic151 FSA 5 67 usec IC171 NN 1 0Vp p 22 nsec 3 MDS JE770 MAIN Board 1 XOUT MN NI YS 2 1Np p 100 nsec 22 nsec DISPLAY Board 1 1c760 E OSCO 0 4 usec MDS JE770 6 2 BLOCK DIAGRAMS BD SECTION DIGITAL SIGNAL PROCESSOR EFM ACIRC ENCODER DECODER SHOCK PROOF MEMORY CONTROLLER ATRAC ENCODER DECODER 10151 1 2 16151 1 2 MAIN 3 lt HEAD DRIVE ex 0 70 lt ADDT_ SECTION s J631 Page 39 HR901 ey Ru SAMPLING 65 c b OVER WRITE HEAD _ CONVERTER NC OPTICAL 5 69 e RECEIVER a NE z qu Bis 63 NC KEK WAVE IN 1 62 e SHAPER 611 OPTICAL 1 4 IC600 o Eer sel S KEE RECEIVER ina 92 j s 5 IC621 OPTICAL BI z e Vela OPTICAL PICK UP 00 00 RF AMP ASYO SI 5 S DIGITAL of F
38. 4 1 PRECAUTIONS FOR USE OF TEST MODE As loading related operations will be performed regardless of the test mode operations being performed be sure to check that the disc Is stopped before setting and removing it Even if the button is pressed while the disc is rotating during continuous playback continuous recording etc the disc will not stop rotating Therefore it will be eJected while rotating Be sure to press the 2 EJECT button after pressing the IMENU NO button and the rotation of disc is stopped 4 1 1 Recording laser emission mode and operating buttons Continuous recording mode CREC C35 Laser power check mode LDPWR CHECK C13 Laser power adjustment mode LDPWR ADJUS C04 lop check lop Compare C27 op value nonvolatile writing Iop NV Save C06 Traverse MO check EF MO CHECK C14 Traverse MO adjustment EF MO ADJUS C07 When pressing the button 4 2 SETTING THE TEST MODE The following are two methods of entering the test mode Procedure 1 While pressing thel KKI AMS DP knob and button connect the power plug to an outlet and release the 5 PP knob and W button When the test mode is set Check will be displayed Rotating the knob switches between the following three groups Check Service Develop lt gt Procedure 2 While pressing the knob connect the power plug to the outlet and release the IKK AMS DPI knob When
39. 5 21 1 762 875 21 1 475 235 21 1 762 875 21 1 762 875 21 1 762 875 21 1 762 875 21 Description Remarks CARBON 220 5 1 4W F lt SWITCH gt 7 SWITCH KEYBOARD B SWITCH KEYBOARD BP SWITCH KEYBOARD 44 SWITCH KEYBOARD SWITCH KEYBOARD P SWITCH KEYBOARD MENU NO SWITCH KEYBOARD YES ENCODER ROTARY gt AMS gt PUSH ENTER SWITCH KEYBOARD CLEAR SWITCH KEYBOARD INPUT SWITCH KEYBOARD REC MODE SWITCH KEYBOARD EJECT 2 OK OK OK OK OK OK OK OK OK OK OK K C791 C796 J 90 L1790 1 R796 RV790 1 681 743 11 1 162 290 31 1 162 290 31 1 770 307 11 1 412 473 21 1 249 393 11 1 249 393 11 1 225 590 11 HP BOARD lt CAPACITOR gt CERAMIC 470PF 10 50V CERAMIC 470PF 10 50V lt JACK gt JACK LARGE TYPE PHONES lt COIL gt INDUCTOR OuH RESISTOR CARBON 10 5 1 4W F CARBON 10 5 1 4W F lt VARIABLE RESISTOR gt RES VAR CARBON 1K 1K PHONE LEVEL 2k 2k OK OK OK OK OK K k k J780 R782 R786 R1781 R1785 1 681 744 11 1 785 945 21 1 247 807 31 1 247 807 31 1 249 409 11 1 249 409 11 KB BOARD OK KKK OK OK k lt JACK gt CONNECTOR DIN PC LINK KEY BOARD RES
40. 683 11 1 568 955 11 8 19 911 19 8 19 911 19 8 19 911 19 8 19 911 19 8 19 911 19 8 19 911 19 8 19 210 21 8 19 210 21 8 19 210 21 8 19 210 21 8 19 911 19 8 19 210 21 8 19 210 21 8 19 024 99 8 19 024 99 Description CERAMIC ELECT CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC ELECT CERAMIC CERAMIC ELECT CERAMIC CERAMIC CERAMIC ELECT CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC lt CONNECTOR gt CONNECTOR FFC LIF NON ZIF 23P CONNECTOR FFC LIF NON ZIF 27P 0 1uF 100uF 0 1uF 4 7PF 0 001uF 15PF 47PF 10PF 0 01uF 0 1uF 4 uF 0 01uF 0 1uF 4 uF 0 01uF 0 1uF 0 1uF 4 Tur 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF 0 1uF CONNECTOR FFC 17P PIN CONNECTOR 3P PLUG MICRO CONNECTOR 10P 20 10 10 5 5 5 30 20 30 20 30 20 PIN CONNECTOR PC BAORD 2P PIN CONNECTOR 6P lt DIODE gt DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE 1SS133T 2 1SS133T 2 1SS133T 2 1SS133T 2 1SS133T 2 1SS133T 2 11E0S04 NTA2B 11E0S04 NTA2B 11EQS04 NTA2B 11EQS04 NTA2B 1SS133T 2 11E0S04 NTA2B 11E0S04 NTA2B 11ES2 NTA2B 11ES2 NTA2B Remarks 50V 10V 50V 50V 50V 50V 50V 50V 16V 50V 50V 16V 50V S
41. 7 8 39 Keyboard data output IIC busy signal input A control signal output Interrupt status input from CXD2662R Not used open Not used open IIC start up check IIC serial clock output I 5 serial data input output Writing data signal output to CXD2662R and AK4524 Reading data signal input from CXD2662R Clock signal output to CXD2662R and AK4524 Keyboard clock ON OFF signal output Not used open Not used open Not used open Qo un OE ss Rm e I Line out muting output L Mute Reset signal output to the AK4524 L Active 6 MDS JE770 Pin Name ADA LATCH mA Z L DINT1 H CLIP O Q PROTECT I o oj 1 L Acti EN ES De us omeaoupomeBEPROM O Ta TT 0 EEPROM write protect signal ouput o o KA XBUSY I Busy signal input from the CXD2662R I Detection signal input from the loading out detection switch I I O CN 4 2 OUT SW itch PLAY SW Laser power ON OFF signal output L PLAY H REC Detection input from the limit switch L Sled limit In H Sled limit Out DIG RST REC SW WR PWR LIMIT IN MOD I Un ON Laser modulation switching signal output L STOP H PLAY pluse REC Laser ON OFF control output H Laser SENS Internal status SENSE input from the CXD2662R SHOCK Track jum
42. ARK A OR DOTTED LINE WITH MARK ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY MDS JE770 JIG FOR CHECKING BD BOARD WAVEFORM The special jig J 2501 196 A is useful for checking the vvaveform of the BD board The names of terminals and the checking items to be performed are shown as follows GND Ground I 3V For measuring IOP Check the deterioration of the optical pick up laser IOP For measuring IOP Check the deterioration of the optical pick up laser TE TRK error signal Traverse adjustment VC Reference level for checking the signal RF RF signal Check jitter FE Focus error signal 1 3V 1 3V IOP lop GND GND for TE TE MDM 7A FE FE VC VC RF RF MDS JE770 lop DATA RECORDING AND DISPLAY WHEN OPTICAL PICK UP AND NON VOLATILE MEMORY IC195 OF BD BOARD ARE REPLACED The Iop value labeled on the optical pick up can be recorded in the non volatile memory By recording the value it will eliminate the need to look at the value on the label of the optical pick up When replacing the optical pick up or non volatile memory IC195 of BD board record the Iop value on the optical pick up according to the following procedure Record Precedure 1 Un B 9 While pressing the IKK AMS DP knob and I button connect the power pl
43. C112 2 20 R112 22 15k 25V D112 a 8 188119 25 21 IC310 1 2 NJM2114D lt 22 EP599 ee E _ gt EARTH PLATE CHASSIS 43 43 MDS JE770 6 7 SCHEMATIC DIAGRAM MAIN SECTION 2 2 See page 51 for IC Block Diagrams 1 MAIN BOARD 1 2 Page43 7 2 3 4 5 6 7 8 9 10 MAIN BOARD 2 2 IC B D IC440 M54641L LOADING DRIVER 11 12 13 CN400 J 7 RAH 22k R442 1 gt LOA IN 0 15k 0440 445 440 Ur UN4211 TA REFERENCE 2 gt LO0AB DUT gt I 29 m VOLTAGE Du 9 SWITCH 3 gt lt LBIN gt 6 100 Rats 4 gt lt LBOUT gt 16V 0 LOADING gt GND in 6 e 5 0445 a 2SA1115TP EF D433 R432 R431 D431 s gt 10 1SS119 72 680 100 1SS119 72 PRE P DOWN D432 155119 72 22k D409 11EQS04 NTAB2 a 6 5YS 3 3 BAOSST D408 11EQS04 NTAB2 IC401 7 BACK 3 3V 4 du 10406 i M62016L o REGULATOR Y RELAY 3 3V IC406 D406 1SS133T 72 RESET 5 1 11EQS04 NTA2B D402 2 11EQS04 NTA2B t 4 9 R407 900 D403 D404 10k 11EQS04 NTA2B 11 0504 5 85 BT406 ML1220 D411 8 SYS GND 11ES2 NTA2B 4 D412 0 4 11ES2 NTA2B D461 16411 11ES2 NTA2B M5F7805L 4 411 lon 45V REG
44. CHEMATIC DIAGRAM MAIN SECTION 1 2 See page 37 for Waveforms See page 56 for IC Pin Functions See page 51 for IC Block Diagrams 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 MAIN BOARD 2 LD IN XL0AB IN5 X 1 LD OUT K LOAB QUT gt 2 C680 LEGNO JUMPER PROTECT SW PROTECT REFRECT SW N 38 Cu TJ gt 5 LDOUT 4 mw MAIN SHCK e sox LD LOW gt lt 5 BOARD wus SYS 3 5 6 0 2 XBUSY 11 SWDT swa BACK 3 3V Y K7 Page44 SYS 6ND gt lt 8 12 MAKE 5 5 9 13 scu Fo 14 XLATCH 15 sar FS Rn a 17 SENS sens 5 gt lt gt 13 STBY K 14 DES 5 EN S S os Wawa wew ADDT TA 7 ES 24 LIMIT IN 2 LRCK 22 s um m a 2 DADT 1 8 5 REG GND 24 19 ts s EINE MCK GND 18 MCLK 17 CN3 D GND 16 17P 4 z x o L666 KEY 3 TUE A es 2 XBCK 15 17 KEY3 4 9 E R50 TIMER
45. D Note 1 If you disconnect the connector CN104 you can remove the BD board without removing the over write head HR901 Note 2 Be careful to handle the over write head HR901 because itis easy to be damaged Screw P1 7X6 Head over light HP901 f Q BD board Q Connector CN104 Remove the solder five portion FLEXIBLE board CN101 Two screws BTP2X6 16 3 8 HOLDER ASSY Spring holder tension 3 9 LOADING MOTOR ASSY M103 Belt loading Two screws PWH1 7x2 5 3 lt Mare lt Motor ASSY loading M103 MDS JE770 gt S Qv s LR lt Zg S SA NS MDS JE770 3 10 SLED MOTOR ASSY M102 SLIDER Remove the claw Shift the slider in the arrow direction Pa Q Lever head des SS e Two screws BTP2X6 Guide L Two screws kal NG PWH1 7X2 5 27 gt gt Q D Motor ASSY sled QD 0 M102 e 3 11 OPTICAL PICK UP Optical pick up KMS 260B 260E SH Main shaft O FLEXIBLE board D SL base Q Screw P1 7X6 Q Two screws K2X6 Screw BTP2X6 4 Base BU A CRN Gear SD Screw M1 7 apping 4 18 3 12 SPINDLE MOTER ASSY M101 Spindle motor ASSY M101 ENS amp Three screws M1 7 tapping MDS JE770 19 MDS JE770 SECTION 4 TEST MODE
46. D UE Note The numbers i displayed show you error rates and ADER Ending the continuous playback mode D Press thej MENUJNO button The display will change to CPLAY1 MODE C34 2 Press the button to remove the disc Note The playback start addresses for IN MID and OUT are as follows IN 40h cluster MID 300 cluster OUT 700h cluster 4 5 2 Operating the Continuous Recording Mode Use only when performing self recording palyback check l Entering the continuous recording mode 1 Set a recordable disc in the unit 2 Rotate the knob and display CREC1 MODE C35 3 Press the button to change the display to CRECI MID 4 When access completes the display changes to CREC 1 and lights up Note The numbers i displayed shows you the recording position addresses Changing the parts to be recorded 1 When the button is pressed during continuous recording the display changes as below MID OUT CRECI IN When pressed another time the parts to be recorded can be changed goes off 2 When access completes the display changes to CREC 1 and lights up Note The numbers 22 displayed shows you the recording position addresses Ending the continuous recording mode D Press the button The display changes to CRECI MODE C35 and goes off 2 Press the button to remove the disc Note 1 The recordi
47. ED drive signal output VFL2 Power supply for fluorescent display tube FL760 drive Not used VDISP2 79 80 AD3 AD4 Power supply for fluorescent display tube FL760 drive Fluorescent display tube FL760 anode electrode drive 59 MDS JE770 SECTION 7 EXPLODED VIEWS NOTE XX X mean standardized parts so they may have some differences from the original one Items marked are not stocked since they are seldom required for routine service Some delay should be anticipated when ordering these items Themechanical parts with no reference number in the exploded views are not supplied Hardware mark list and accessories and packing materials are given in the last of this Color indication of Appearance Parts Example KNOB BALANCE WHITE RED T T The components identified by mark or dotted line with mark are critical for safety Replace only with part number specified Parts color Cabinet s color Abbreviation Singapore model SP parts list 7 1 CHASSIS SECTION 15 Mechanism section MDM 7A not supplied 1 Ref No Part No Description Remarks Ref No Part No Description Remarks 1 X 4953 448 1 FOOT ASSY 13 A 2007 925 A MAIN BOARD COMPLETE AEP UK 2 4 232 237 01 FOOT DIA 30 3 4 233 025 61 PANEL BACK AEP 13 A 2007 931 A MAIN BOARD COMPLETE SP 3 4 233 025 81 PANEL BAGK SP 14 1 569 972 21 SOCKET SHO
48. HIP 1 162 968 11 1 125 891 11 1 164 245 11 1 164 156 11 1 164 156 11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 1 164 156 11 CERAMIC CHIP 1 117 370 11 CERAMIC CHIP 1 126 206 11 ELECT CHIP 1 163 038 00 CERAMIC CHIP 1 164 156 11 CERAMIC CHIP 1 117 970 11 1 131 872 11 1 126 206 11 1 164 156 11 1 126 206 11 ELECT GHIP CERAMIC CHIP ELECT CHIP CERAMIC CHIP ELECT CHIP 1 164 156 11 1 164 156 11 1 164 156 11 1 117 720 11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CONNECTOR 1 766 833 21 1 784 835 21 1 784 834 21 1 580 055 21 1 84 859 21 DIODE 8 719 988 61 8 19 080 81 8 19 080 81 DIODE FS1J6 DIODE FS1J6 IC 100PF 0 01uF 0 01uF 0 47uF 100PF 0 0047uF 0 47uF 0 015uF 0 1uF 0 1uF 0 1uF 10uF 100uF 0 1uF 0 1uF 22uF 1000PF 100uF 0 1uF 100uF 0 1uF 0 1uF 0 1uF 4 uF SMD 2P DIODE 1SS355TE 1 5 10 10 10 5 10 10 10 20 20 10 20 20 CONNECTOR FFC FPC ZIF 21P CONNECTOR FFC LIF NON ZIF 27P CONNECTOR FFC LIF NON ZIF 23P PIN CONNECTOR CONNECTOR FFC LIF NON ZIF 7P 8 752 080 95 8 59 473 51 8 59 836 79 8 52 404 64 8 759 67 1 27 8 59 096 87 8 59 481 17 IG IG IG IG IG IG IG CXA2523AR TLV2361CDBV BH6519FS E2 CXD2662R MSM51V4400E 70TS K TC7WUO4FU TE12R MC74ACTOSDTR2 Remarks 50V 25V 25V 10V 50V 50V 10V 25V 25V 25V 25V 10V 6 3V 25V
49. IP 1K 5 1 16W Q133 8 729 402 93 TRANSISTOR UN5214 TX R173 1 216 821 11 METAL CHIP 1K 5 1 16W Q134 8 729 402 93 TRANSISTOR UN5214 TX R174 1 216 811 11 METAL CHIP 150 5 1 16W Q181 8 729 018 75 TRANSISTOR 2SJ278MYTR R175 1 216 857 11 METAL CHIP 1M 5 1 16W 0182 8 29 017 65 TRANSISTOR 2SK1764KYTR R176 1 216 809 11 METAL CHIP 100 5 1 16W R179 1 216 295 91 SHORT 0 lt RESISTOR gt R181 1 216 841 11 METAL CHIP 47K 5 1 16W R101 1 216 829 11 METAL CHIP 4 7K 5 1 16W R182 1 216 841 11 METAL CHIP 47K 5 1 16W R102 1 216 853 11 METAL CHIP 470K 5 1 16W R183 1 216 841 11 METAL CHIP 47K 5 1 16W R103 1 216 863 11 RES GHIP 3 3M 5 1 16W R184 1 220 942 11 METAL CHIP 3 3 1 1 4W R104 1 216 853 11 METAL CHIP 470K 5 1 16W R185 1 220 942 11 METAL CHIP 3 3 1 1 4W R105 1 216 825 11 METAL CHIP 2 2K 5 1 16W R195 1 216 833 11 METAL CHIP 10K 5 1 16W R106 1 216 825 11 METAL CHIP 2 2K 5 116W R196 1 216 833 11 METAL CHIP 10K 5 116W R107 1 216 825 11 METAL CHIP 2 2K 5 1 16W R197 1 216 833 11 METAL CHIP 10K 5 1 16W R108 1 216 833 11 METAL CHIP 10K 5 1 16W R218 1 216 864 11 METAL CHIP 0 5 1 16W R109 1 216 845 11 METAL CHIP 100K 5 1 16W R110 1 216 845 11 METAL CHIP 100K 5 1 16W lt SWITCH gt R111 1 216 833 11 METAL CHIP 10K 5 1 16W 5101 1 762 596 21 SWITCH 1 KEY LIMIT SW 112 1 216 829 11 METAL 4 7K 5 1 16W 103 1 771 956 21 SWITCH PUSH 1 KEY OUT SW R113 1 216 833 11 METAL CHIP 10K 5 1 16W 104 1 771 955 21 SWITCH PUSH 1 KEY PLA
50. ISTOR CARBON 100 5 1 4W CARBON 100 5 1 4W CARBON 220 5 1 4W F CARBON 220 5 1 4W F 2k 2k 2k 2k 2k ok OK OK OK OK OK K k C730 C740 C742 C743 1 681 742 11 1 164 159 11 1 164 159 11 1 124 984 00 1 162 306 11 KEY SW BOARD 2k ok 2k 2k ok KK ok ok ok K K lt CAPACITOR gt CERAMIC 0 1uF 50V CERAMIC 0 1uF 50V ELECT 100uF 20 10 0 01uF 20 16V MDS JE770 Ref No Part No Description Remarks Ref No Part No Description Remarks CONNECTOR C172 1 130 471 00 MYLAR 0 001uF 5 50V C176 1 126 049 11 ELECT 22uF 20 25V CN720 1 766 739 11 CONNECTOR BOARD TO BOARD 8P C177 1 136 356 11 MYLAR 470PF 5 50V C211 1 136 356 11 MYLAR 470PF 5 50V lt DIODE gt D726 8 719 046 44 LED SEL5221S TP15 STANDBY C212 1 126 049 11 ELECT 22uF 20 25V D733 8 719 046 39 LED SEL5821A TP15 GROUP C213 1 126 049 11 ELECT 22uF 20 25V C261 1 137 505 11 MYLAR 220PF 5 50V IC C265 1 137 503 11 MYLAR 0 0001uF 5 50V C266 1 137 503 11 MYLAR 0 0001uF 5 50V C740 8 759 826 34 IC NJL74H400A C271 1 137 368 11 MYLAR 0 0047uF 5 50V TRANSISTOR C272 1 130 471 00 MYLAR 0 001uF 5 50V C276 1 126 049 11 ELECT 22uF 20 25V Q726 8 29 900 80 TRANSISTOR UN4211 TA C277 1 136 356 11 MYLAR 470PF 5 50V 0733 8 29 900 80 TRANSISTOR UN4211 TA C311 1 126 023 11 100uF 2096 16V lt RESISTOR gt C316 1 126 023 11 ELEC
51. L 6 BOARD 7 ED 0 S d M C O 1 4 o 0 Jw902 JW904 EN JUMPER Jw901 MAIN NE o Lc po a BOARD 2 2 EXCEPT LINE FILTER OP A 4 5 6 pa Te D gt Va OM Lm fo O Cae a RY910 1 RELAY T I 910 NUI REPLACEABLE PL 155119 72 BUILT TRANSFORMER C924 C923 0 1 0 1 EP900 EARTH PLATE CHASSIS Note The components identified by mark AN or dotted ine with mark AN are critical for safety Heplace only with part number specified 49 49 MDS JE770 6 13 IC BLOCK DIAGRAMS CXA2523AR BD BOARD 6101 amp I 5 5 x A O CD LL LL lt gt 43K42 41 440 Yt 37 ZN gt USRC 1 DET EQ BPF3T AUX 0 PEAK3T SW O t t 7 ST WBL BOTTOM aaa 86 BOTM vc 3 t WBL 85 ABCD 34 FE 4 83 AUX X ABCDA BPFC pan B 5 81 ADAGC IVR BB 30 ADIN l FEA og BPF22 ADIP gt WBLN AGC 29 ADFM TG T gt 7 PTGR 7 07 CSLED TESW i 68 TE TEA WBL um ST VICONV 05 WBLADJ EQ PD AUXSW 19 7
52. Load a test disc MDW 74 GA 1 which can be recorded If a disk is loaded at step 2 the check will start automatically 4 When XX CHECK is displayed the item corresponding to XX will be performed When 06 CHECK completes the disc loaded at step 2 will be ejected DISC IN will be displayed Load the check disc MD TDYS 1 When the disc is loaded in step 4 the check will automatically be resumed from 07 CHECK 6 After completing to test item 12 check OK or NG will be displayed If all items are OK CHECK ALL OK will be displayed If any item is NG it will be displayed as NG XXXX W When CHECK ALL OK is displayed it means that the optical pick up 15 normal Check the operations of the other spindle motor thread motor etc When displayed as NG xxxx it means that the optical pick up is faulty In this case replace the optical pick up 4 10 INFORMATION Display the software version Procedure 1 If displayed as INFORMATION press the YES button 2 The software version will be displayed 3 Press the MENU NO button to end this mode 4 11 WHEN MEMORY NG IS DISPLAYED If the nonvolatile memory data is abnormal NG will be displayed so that the MD deck does not continue operations In this case set the test mode promptly and perform the following procedure Procedure 1 Set the test mode Refer to 4 2 2 Normally a message for selecting th
53. OCUS TRACKING ERROR AMP 63 z AUDIO KMS 260B 260E H CC INTERFACE Nn R OPTICAL DIGITAL i IC101 2 2 TRANSCEIVER QUT i g ASYI m 0 IC641 OPTICAL MPA O s N 1 a SIN 68 cs 2 AGCI RFAGC RF RFI XBCK mud Ja ES 496 gt O EA 27 I 65 NC MAIN i 2 2 Page 39 age AUK eo D BUFFER MAIN PEAK 0500 IC171 SECTION SI PEAK amp p d Page 39 U 86 10153 I e c SUBCODE INTERNAL BUS I i 5 ADIP PROCESSOR 5 5 78 DEMODULATOR d M A A DECODER JL JL me I 4 je SHE 9 8 CPU MONITOR 6 2 INTERFACE CONTROL FOCUS SPINDLE a L DETECTOR x 69 84 79 lt I 6 5 215 854 EE HENG o TRACKING 26 gt oi DN l T lt See 28 4 9 8 HS XBT X2 X3X4 i o lt gt COMMAND 5 5 55 5 AUTOMATIC AE cj gt lt 0 y _ 5 POWER CONTROL FA 09 02 0E AMP SERIAL PARALLEL _ WE I 0121 122 V I FOCNT SWDT gt CONVERTER 00 E RAS DECODER SONNERIES SCLK D gt CAS LASER DIODE 64 Q9 amp SWITCH 10 5 5 SECTION 0101 51212 9 6 Page 39 I I I I 3 3V D 3V REG 5V oo FOCUS TRACKING COIL DRIVE e 54 WR PWR SYSTEM CON
54. ORIES amp PACKING MATERIALS K K KK OK OK OK OK OK OK OK OK REMOTE COMMANDER RM D10J CORD LIGHT PLUG OPTICAL CORD CONNECTION AUDI0 MANUAL INSTRUCTION ENGLISH MANUAL INSTRUCTION FRENCH AEPSP MANUAL INSTRUCTION SPANISH AEP MANUAL INSTRUCTION GERMAN DUTCH SWEDISH MANUAL INSTRUCTION ITALIAN POLISH AEP MANUAL INSTRUCTION TRADITIONAL CHINESE SP COVER BATTERY FOR RM D10J OK k k 2k 2k 2k 2k 2k 2k 2k 2k 2k 2k OK OK K K KK OK OK OK OK 1 2 3 685 646 79 685 850 04 685 204 19 ok ok ok ok ok k K K HARDWARE LIST ok ok ok K ok K K K SCREW BVTP 3X8 TYPE2 N S SCREW BVTT 2X3 S SCREW KTP 2X6 TYPE2 NON SLIT The components identified by mark A or dotted line with mark A are critical for safety Replace only with part number specified MDS JE770 MEMO 1 MDS JE770 REVISION HISTORY Clicking the version allows you to Jump to the revised page Also clicking the version at the upper right on the revised page allows you to Jump to the next revised page er Description of Revision 2001 05 New
55. P 50V SP 16V SP 50V AEP UK 50V 50V 50V 90V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V Ref No D421 D422 D431 D432 D433 D461 D462 D466 D467 D851 EP559 EP940 FB460 FB465 IC1 IC310 IC360 IC370 IC390 16401 16406 16411 16421 16440 16500 1550 16600 IC611 IC621 IC641 J300 J631 J851 L555 L611 L641 L653 L657 021 022 034 0181 0190 0281 0290 Q380 Q440 Q445 Part No 8 19 024 99 8 19 109 81 8 19 911 19 8 19 911 19 8 19 911 19 8 19 024 99 8 19 024 99 8 19 024 99 8 19 024 99 8 19 911 19 1 537 771 21 1 537 771 21 1 414 093 11 1 414 093 11 6 800 019 01 8 59 712 02 8 59 712 02 8 59 12 02 8 59 634 51 8 59 445 59 8 59 481 02 8 59 231 53 8 59 633 42 8 59 633 65 8 759 579 68 9 59 917 18 C 99 911 15 8 149 012 70 8 149 012 70 8 149 012 69 1 784 430 11 1 784 432 11 1 779 655 21 1 414 142 11 1 410 509 11 1 410 509 11 1 412 473 21 1 412 473 21 8 729 900 80 8 729 900 80 8 729 900 80 8 729 044 08 8 729 044 08 8 729 044 08 8 729 044 08 8 29 422 57 8 29 900 80 8 729 119 76 Description DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE 11ES2 NTA2B RD4 ES T2B2 1SS133T 2 1SS133T 2 1SS133T 2 11ES2 NTA2B 11ES2 NTA2B 11ES2 NTA2B 11ES2 NTA2B DIODE 155133 72 lt GROUND TERMINAL gt TERMINAL BOARD GROUND TERMINAL BOARD GROUND lt FERRITE BEAD
56. RT 2P 3 4 236 047 11 PANEL BAGK UK 15 4 210 291 01 SGREVV GASE 3 TP2 BLAGK 15 4 210 291 11 SGREVV CASE 3 TP2 SILVER 4 9 910 999 31 RIVET DIA 3 NYLON 16 4 232 149 31 CASE 408226 BLACK 5 1 681 739 11 PT BOARD 6 4 221 887 11 SCREW PTTWH M3 S TITE 16 4 232 580 31 CASE 408226 SILVER 7 4 228 689 01 INSULATOR 17 1 569 008 21 ADAPTOR GONVERSION SP 8 4 228 643 11 SGREVV BVTTWH M3 STEP 17 1 770 019 11 ADAPTOR GONVERSION PLUG 3P UK 18 1 681 745 11 VOL SEL BOARD SP 9 1 792 811 11 WIRE FLAT TYPE 23 CORE ANTR900 1 437 339 11 TRANSFORMER POWER AEP UK 10 1 757 928 11 WIRE FLAT TYPE 27 CORE 3 03 244 00 BUSHING 2104 CORD ANTR900 1 437 340 11 TRANSFORMER POWER SP A 12 1 777 071 41 CORD POWER 60 7 2 FRONT PANEL SECTION Ref No 51 91 52 52 53 54 95 56 91 91 58 supplied with J790 supplied with RV790 Part No X 4953 713 1 X 4953 714 1 3 931 378 01 3 931 378 31 1 681 744 11 4 951 620 01 1 681 743 11 4 228 630 01 4 228 629 81 4 230 848 21 4 971 774 01 not supplied Description PANEL ASSY FRONT BLACK PANEL ASSY FRONT SILVER KNOB F10 BLACK KNOB F10 SILVER KB BOARD SCREW 2 6X8 BVTP HP BOARD SPRING LID TENSION COIL LID MD BLACK LID MD SLVER KNOB TIMER BLACK Remarks Ref No 58 59 60 60 Part No 4 971 774 31 1 681 742 11 A 2007 926 A A 2007 932 A 4 955 90
57. RY KTIMERY 6 uo REPEAT PLAY MODE J POWER LED 7 33V 7 3 3V 4 9 6 3 R733 R732 5 GND 2 XQ n a Pi lt 1 S733 5732 0 S731 ALBUM LED 3 ALBUM LED 0 C R741 2 9 lt 6 10 10 8 C730 912 M MAIN 1 2 M Go 10V GROUP GROUP SKIP TIME BOARD CN3 E 1 5721 E Page43 S713 n ENCODER 5 KK AMS DD EJECT x 220 IPUSH ENTER D adi 3 5 SEL582 Rp15 R716 R715 1 A R714 R713 R712 I TIMER lt lt 33k 10k Sw 4 4 7k 3 3k 2 2k GND STANDBY GROUP W AM oND 5 Ww AW AW lt id TIMER OF 10k S716 S715 POWER gt S714 5712 S711 C720 W Q O e 0 REC 4 V v 0 1 9 I 1 1 Q OFF y apy I REC MODE INPUT CLEAR ves MENU NO E PLAV sles 22 0 Q726 E I UN4211 TA 0733 EE J06 1 CHASSIS C740 LED DRIVE UN4211 TA 106 0 LED DRIVE LP730 LP740 R706 R705 R704 R703 R702 R775 33k 10k 47k 33k 22k I F z 220 KEY 0 gt D775 O O O O O SEL5821A TP45 d S706 d S705 d S704 1 S703 4 5702 1 S701 4 O O 0 O Q MDLP 148 F Q 0775 gt u Le gt mire I TAR UN4211 TA We LED DRIVE I 1 C760 22 6 3V 549 32 9 I G 5 19 S20 S d Su E S SEG20 52 x ES SEG21 22 2 94 LN sEG22 on 4 75 SE623 4 27 9 0 O 26 SEG24 S25 SEDI 27 27 SEG25
58. Rotate the IKKI AMS Pol knob to display AG Set MO C10 3 When the button is pressed the adjustment will be performed automatically Completel1 will then be displayed momentarily when the value is recorded in the non volatile memory after which the display changes to AG Set MO C10 4 Press the JA EJECT button to remove the disc 5 17 ADJUSTING POINTS AND CONNECTING POINTS BD BOARD SIDE A 1 D101 CN101 BD BOARD SIDE B jicr95 23 1 27 1 CN103 CN102 1 is useful to use the jig for checking the waveform Refer to Servicing Note on page 6 MDS JE770 35 MDS JE770 SECTION 6 DIAGRAMS 6 1 CIRCUIT BOARDS LOCATION PT board VOL SEL board SP model KEY SW board lt gt 2 L KN PAG jc HP board lt lt 4 NS E DISPLAY board BD board Abbreviation SP Singapore model 36 THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRANS In addition to this the necessary note is printed in each block For schematic diagrams Note All capacitors are in uF unless otherwise noted pF uuF 50 WV or less are not indicated except for electrolytics and tantalums All resistors in and 4W or less unless otherwise specified e A internal component e 1 panel designation Note The components identi fied by mark A or dotted line with mark
59. SERVICE MANUAL Self Diagnostics Supported model Ver 1 0 2001 05 Foreign patents licensed form Dolby Laboratories Licensing Corporation System Disc Laser Laser output MiniDisc digital audio system MiniDisc Semiconductor laser A 780 nm Emission duration continuous MAX 44 6 uW 1 This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick up Block with 7 mm aperture Laser diode Revolutions CLV Error correction Sampling frequency Coding Modulation system Number of channels Frequency response Signal to noise ratio Wow and flutter Material GaAlAs 400 rpm to 900 rpm ACIRC Advanced Cross Interleave Reed Solomon Code 44 1 kHz ATRAC Adaptive TRansform Acoustic Coding ATRAC 3 EFM Eight to Fourteen Modulation 2 stereo channels 5 to 20 000 Hz 0 3 dB Over 98 dB during play Below measurable limit 9 873 890 11 Sony Corporation 2001E0200 1 Home Audio Company 2001 5 Shinagawa Tec Service Manual Production Group MDS JE770 AEP Model UK Model E Model Model Name Using Similar Mechanism MDS S50 MD Mechanism Type MDM 7A Optical Pick up Type KMS 260B 260E SPECIFICATIONS Inputs ANALOG IN Jack type phono Impedance 47 kilohms Rated input 500 mVrms Minimum input 125 mVrms Connector type square optical Impedance 660 nm optical wave length European model only Jack type phono Impedance
60. T 100uF 20 16V C361 1 126 023 11 ELECT 100uF 20 16V R722 1 249 421 11 CARBON 2 2K 5 1 4W C366 1 126 023 11 ELECT 100uF 20 16V 3 1 247 843 11 GARBON 3 3K 5 1 4W C391 1 126 933 11 ELECT 100uF 20 16V 4 1 249 425 11 GARBON 4 7K 5 1 4W C396 1 126 933 11 ELECT 100uF 20 16V 5 1 249 437 11 CARBON 47K 5 1 4W R732 1 249 421 11 CARBON 2 2K 5 1 4W 6401 1 126 939 11 ELECT 10000uF 20 16V 6402 1 164 159 11 CERAMIC 0 1uF 50V R733 1 247 843 11 CARBON 3 3K 5 1 4W C404 1 126 933 11 ELECT 100uF 20 16V R 41 1 247 807 31 CARBON 100 5 1 4W C405 1 162 306 11 CERAMIC 0 01uF 30 16V R742 1 249 401 11 CARBON 47 5 1 4W C406 1 124 252 00 ELECT 0 33uF 20 50V R 47 1 249 429 11 CARBON 10K 5 1 4W R1726 1 249 409 11 CARBON 220 5 1 4W C411 1 126 939 11 ELECT 10000uF 20 16V C412 1 164 159 11 CERAMIC 0 1uF 50V R1733 1 249 409 11 CARBON 220 5 1 4W C416 1 126 916 11 ELECT 1000uF 20 6 3V C421 1 164 159 11 CERAMIC 0 1uF 50V SWITCH C422 1 164 159 11 CERAMIC 0 1uF 50V S722 1 762 875 21 SWITCH KEYBOARD PLAY MODE 6423 1 128 576 11 ELECT 100uF 20 63V 5723 1 762 875 21 SWITCH KEYBOARD REPEAT 6424 1 164 159 11 CERAMIC 0 1uF 50V S724 1 762 875 21 SWITCH KEYBOARD LEVEL DISPLAY CHAR 6425 1 126 967 11 ELECT 47uF 20 50V S726 1 762 875 21 SWITCH KEYBOARD 1 9 C426 1 126 965 11 ELECT 22uF 20 50 5731 1 762 875 21 SWITCH KEYBOARD TIME C431 1 104 663 11 ELECT 33uF 20 25V S732 1 762 875 21 SWITCH KEYBOARD GROUP SKIP C432 1 128 551 11 ELECT 22uF 20 25V S73
61. T NS d Coal 2 E t NY F MAINBOARD CHASSIS G 4 NJ ATIY A 4 Gj TIIT lt 4 168 5 J WW 2 W122 lt O U R40 Yd Vili 1 f 2 5 U 1 4 T R33 716 RO A TALS 5 393 2 8154 gt 92 2 3 gt 1 ROA 5 HF 22 R95 a Z m Uu 4 ii LI ya 2 AA D d 0 HP BOARD tn 7 Eb 3 Page 40 SAS LC gt 2 K D gt gt gt gt O S NJ I 1 I I I On C1 O1 C1 N D mmomm mm NEA 8 1 i i O a WVAN 6 STO AO glsB TI D E D E gt EN 5 EL 28 8 8 SIS B ne E 6 4 8 E F 3 E C 4 e NS ee 5 A B 11 y NZ D O O app 4 pon lt 5 3 F 9 lo lo O LO fo Ll 0 REM S f BSG SS G 9 Cy G 8 2 asl A G 8 i HIDE 6 gt 4 1 681 740 4 OPTICAL E n oV oe P OPTICAL R R 10 KB BOARD ANALOG IN 1300 CN2780 Te 11 Page 46 nd AEP UK 10 oz mm e 1 m fk MOOOT OOTUT HAO Rh 45 45 MDS JE770 6 9 PRINTED WIRING BOARD DISPLAY SECTION See page for Circuit Board Location There are a few cases that the part isn t mounted in model is printed on diagram
62. TROLLER 190 SPINDLE SLED MOTOR DRIVE IC1 1 2 16141 6 SPFD SPRD 00 43 G7 6969180416364 R S101 LIMIT IN 55 AUTOMATIC EME POWER 5V CONTROL M102 67 LOADING UNREG OUT SW 49 po E SLED M 5 ANALOG MUX MOTOR DRIVE HAN OUT SW 16440 REFERENCE A D CONVERTER VOLTAGE SWITCH E 5104 5 0440 445 PLAY SW D PLAY SW DIGITAL SERVO ds E ipis FROM CPU FCS FDR PROCESS S105 2 DRE REC SW 63 7 POSITION TA PIE GO XLAT M103 lt 2 51 SCLK LOADING REFLECT 61 O Fes 2 SWDT PROTECT 4 e SIGNAL PATH q DIGITAL SERV e 2 E 5 1 EEPROM S102 gt gt PLAY ANALOG OUT TRK 40 lt TRDR HF MODULE IC195 REFLECT PROTECT DETECT PLAY DIGITAL OUT 10151 2 2 ST HIGH REFELECT RATE 2 s DIGITAL OUT ANALOG IN I 10102 a131 134 WRITE M REC DIGITAL IN LOVV REFELECT RATE UN PROTECT 36 36 MDS JE770 MAIN SECTION A D D A CONVERTER 16500 e SIGNAL PATH _J300 gt gt PLAY ANALOG OUT AD REC ANALOG IN HIGH PASS FILTER ND 6 LINE AMP 0 L BD SECTION D e DIGITAL CONVERTER T AINR 125 ANALOG IN Page 38 ATTENUATOR BLOCK 0
63. ULATOR 0467 R423 100k 11ES2 NTA2B 425 12 32V D421 D422 11ES2 NTA2 RD4 7EB2 1421 M5293L x 14 gt 51 I C421 32V REGULATOR 15 gt F PRE P DOWN JW451 JUMPER 0 16 ai 2 2k 0 6 7 0911 KRELAY CIRL 2 2SD2144S TP UVW Vs RELAY 17 R912 1972 DRIVE JW452 JUMPER 18 u x ng REN T 19 a KB DATA KB CLK 035 UN4211 TA 2 2 CN830 BUFFER Nom 6P R827 UN4211 TA T 0 56 S CLK 2 BUFFER Q821 2SC2603TP EF DATA 2SC2603TP EF BUFFER 3 BUFFER 826 GND 4 10k BUSY 5 KB BOARD POWER 6 f 5 Page47 034 UN4211 TA KEYBOARD OFF SWITCH EE Q 851 D851 R856 C853 1SS133T 72 JUMPER 0 1 J851 21 D CONTROL MI 22 6 5 Q CHASSIS 44 N 44 EP940 EARTH PLATE CHASSIS 14 BOARD CN921 Page49 MDS JE770 6 8 PRINTED WIRING BOARD MAIN SECTION See page 36 for Circuit Board Location ie model is printed on diagram 11 No 10 e Semiconductor Location Ref No No Location DISPLAY BOARD BD BOARD CN700 Page 46 r Nj C559 Y J99U z PT BOARD e e seso 6 gt 0 E E T quem M uod AR
64. Y SW R114 1 216 827 11 METAL CHIP 3 3K 5 1 16W 105 1 771 955 21 SWITCH PUSH 1 KEY REC SW R115 1 216 833 11 METAL CHIP 10K 5 1 16W ok ok lt gt lt gt ok ok lt gt lt gt ok ok ok lt gt lt gt ok ok lt gt lt gt ok ok lt gt lt gt ok ok lt lt lt gt lt gt lt gt ok lt lt gt lt gt ok ok lt gt lt gt ok ok ok Ok ok ok ok Ok ok 65 MDS JE770 DISPLAY HP KB KEY SW Ref No C700 C720 C751 C753 C760 C761 C762 C766 C767 C768 C769 C770 0771 CN700 CN710 D775 FL750 IC 60 0761 0762 0775 R 02 R 03 R 04 R 05 R706 R712 R713 R714 R715 R716 R761 R762 R763 R764 R766 R767 R768 R769 R770 66 Part No A 2007 926 A A 2007 932 A 4 955 901 01 4 996 686 01 1 126 153 11 1 164 159 11 1 124 261 00 1 124 261 00 1 126 153 11 1 162 294 31 1 162 294 31 1 162 213 31 1 164 159 11 1 162 294 31 1 162 294 31 1 162 294 31 1 164 159 11 1 779 554 21 1 568 669 11 8 19 046 39 1 517 987 11 9 759 680 17 8 729 620 05 8 129 620 05 8 29 900 80 1 249 421 11 1 247 843 11 1 249 425 11 1 249 429 11 1 249 435 11 1 249 421 11 1 247 843 11 1 249 425 11 1 249 429 11 1 249 435 11 1 247 807 31 1 247 807 31 1 249 441 11 1 249 441 11 1 247 843 11 1 247 807 31 1 247 807 31 1 247 807 31 1 247 807 31 Description DISPLAY BOARD COMPLETE DISPLAY BOARD COMPLETE SP
65. a aaa e RARUS ae 50 Abbreviation 6 14 IC Put EUlicHonsu di P ne nr 52 SP Singapore model 7 EXPLODED VIEWS Tels Chassis S CUOIL yu LR see D D y S E a 60 152 Front Panel SOCOM S 61 7 3 Mechanism Section 1 MDM 7A 62 7 4 Mechanism Section 2 MDM 74A 63 8 ELECTRICAL PARTS LIST 64 MDS JE770 SECTION 1 SERVICE NOTES NOTES ON HANDLING THE OPTICAL PICK UP BLOCK OR BASE UNIT The laser diode in the optical pick up block may suffer electrostatic break down because of the potential difference generated by the charged electrostatic load etc on clothing and the human body During repair pay attention to electrostatic break down and also use the procedure in the printed matter which is included in the repair parts The flexible board is easily damaged and should be handled with care NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment It is feared that you will lose your sight Laser component in this product is capable of emitting radiation exceeding the limit for Class 1 This appliance is classified as a CLASS 1 LASER product The CLASS 1 LASER PRODUCT MARKING 15 located on the rear exterior CLASS 1 LASER PRODUCT LUOKAN 1 LASERLAITE KLASS 1 LASERAPPARAT This caution label 1s located inside
66. ain adjustment MO AG Set CD TEMP CHECK LDPWR CHECK EF MO CHECK EF CD CHECK FBIAS CHECK ScurveCHECK VERIFYMODE DETRK CHECK 0920 CHECK Iop Read Iop Compare ADJ CLEAR INFORMATION CPLAY IMODE CREC 1MODE For details of each adjustment mode refer to 5 Electrical Adjustments For details of Err Display C02 refer to Self Diagnosis Function on page 2 e f a different mode has been selected by mistake press thej MENU NO button to exit that mode e Modes with X in the Mark column are not used for servicing and therefore are not described in detail If these modes are set acciden tally press MENU NO button to exit the mode immediately 21 MDS JE770 4 5 1 Operating the Continuous Playback Mode I Entering the continuous playback mode D Set the disc in the unit Whichever recordable discs or discs for playback only are available 2 Rotate the knob and display CPLAY 1 MODE C34 3 Press the button to change the display to CPLAY1 MID 4 When access completes the display changes to C 11 AD Note The numbers displayed show you error rates and ADER Changing the parts to be played back D Press the button during continuous playback to change the display as below CPLAY 1 MID CPLAY1 OUT CPLAY1 IN When pressed another time the parts to be played back can be moved 2 When access completes the display changes to 11 A
67. at the C error is below 20 and ADER 15 below 2 7 Press the button and display ifs b i Check that the C error is below 100 and ADER is below 2 8 Press the button and display ifia Check that the C error is below 100 and ADER is below 2 9 Press the MENU NO button next press the button and remove the continuously recorded disc Note 1 If the C error and ADER are above other than the speci fied value at points a step 8 in the above or b step 7 in the above the focus bias adjustment may not have been carrted out properly Adjust perform the beginning again 34 5 16 AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT Be sure to perform this adjustment when the Optical pick up is re placed If the adjustment results becomes Adjust NG the Optical pick up may be faulty or the servo system circuits may be abnormal 5 16 1 CD Auto Gain Control Output Level Adjustment Adjusting Procedure 1 Insert the check disc MD TDYS 1 2 Rotate the knob to display AG Set CD C11 3 When the button is pressed the adjustment will be performed automatically Completel1 will then be displayed momentarily when the value is recorded in the non volatile memory after which the display changes to 220 Set CD 4 Press the amp EJECT button to remove the disc 5 16 2 MO Auto Gain Control Output Level Adjustment Adjusting Procedure 1 Insert the reference disc MDW 74 GA 1 for recording 2
68. ating automatically 12 Press the amp EJECT button and remove the disc 13 Load the check disc MD TDYS 1 14 Roteto the IKA AMS DD1 knob and display EF CD CHECK C15 imposed automatically 29 MDS JE770 16 Observe the waveform of the oscilloscope and check that the specified value is satisfied Do not rotate the AMS Pol knob Traverse Waveform vc MA PATE H TI I Specified value Below 10 offset value IA BI X 100 2 A B Offset value 96 17 Press the button and display EF CD CHECK 18 Press the 2 EJECT button and remove the check disc MD TDYS 1 Note 1 MO reading data will be erased during if a recorded disc is used in this adjustment Note 2 If the traverse waveform is not clear connect the oscillo scope as shown in the following figure so that it can be seen more clearly Oscilloscope BD board 330 kO CN105 pin 4 TE 9 CN105 pin VC 5 5 6 7 Focus Bias Check Change the focus bias and check the focus tolerance amount Checking Procedure 1 Load a continuously recorded test disc MDW 74 GA 1 Refer to 5 5 Using the Continuously Recorded Disc 2 Rotate the knob and display CPLAY1 MODE C34 Press the button and display CPLAY1 MID 4 Press the button when C 000 AD is displayed 5 Rotate the KIK AMS DD knob and display FBIAS CHECK C16 6 Pres
69. ayed on the fluorescent display and it turns off immediately 6 Procedure 1 Press the button continuously for about 10 seconds Procedure 2 Press thej LEVEL DISPLAY CHAR button while pressing the LI button and MENU NO button 7 When the mode is set RTs 000 00e 000 is displayed 8 Press the 8 REC Jbutton to start recording Then press the button and start recording 9 To check the track mode press the button to start play 10 To exit the test mode press the button and turn OFF the power When TOC disappears disconnect the power plug from the outlet If the test mode cannot be exited refer to Forced Reset on page 9 Fig 1 Reading the Test Mode Display Fig 2 Reading the Test Mode Display During recording and stop During playback RTs ctHic Fluorescent display tube display Fluorescent display tube display Cause of retry Parts No name of area named on TOC H 1 Number of retries H HH Cluster Address Physical address on disc Number of retry errors Sector Track mode Track information such as copyright infor mation of each part Reading the Retry Cause Display Bit _ Higher Bits Hexadecimal sjalzjilsjal2i 1 Occurring conditions to When ADIP address is not continuous 1 2 4 10 0 0 8 10 MDS JE770 Reading the Display Convert the hexadecimal display into binary display If more than two causes they will be a
70. d in focus bias adjustment and error rate check The following describes how to create a continuous recording disc Insert a disc blank disc commercially available 2 Rotate the knob and display CREC1 MODE C35 3 Press the button again to display CRECI MID Display CREC 0300 and start to recording 4 Complete recording within 5 minutes 5 Press thej MENU NO button and stop recording 6 Press the button and remove the disc The above has been hovy to create a continuous recorded data for the focus bias adjustment and error rate check Note Be careful not to apply vibration during continuous recording 5 6 CHECKS PRIOR TO REPAIRS These checks are performed before replacing parts according to approximate specifications to determine the faulty locations For details refer to Checks Prior to Parts Replacement and Adjust ments See page 9 5 6 1 Temperature Compensation Offset Check When performing adjustments set the internal temperature and room temperature to 22 to 28 C Checks cannot be performed properly if performed after some time from power ON due to the rise in the temperature of the IC and diode etc So perform the checks again after waiting some time Checking Procedure 1 Rotate the 5 1 knob to display TEMP CHECK C12 2 Press the button 3 T OK should be displayed If T NG is displayed it means that t
71. dded Example When 42 is displayed Higher bit 4 0100 b Lower bit 2 0010 bl In this case the retry cause is combined of CLV unlock and ader5 When A2 is displayed Higher bit A 1010 b7 b5 Lower bit 2 0010 b2 The retry cause in this case is combined of access fault TVR rec error and ader5 Reading the Track Mode Hexadecimal COH decimal b7 b6 bs b4 3 b2 bl feo in ofojojojojojojij 01 EmpheisOFF EmphasisoNn LDUDDIUDUMGN This is 2 bit display Normally 01 01 Normal audio Others Invalid AdeNomh iui 00 100000 o 20 Og 7 Digital copy O 10 0 0 0 0 0 4 Copyright 7 Nocopyright 110 0 0 0 0 0 0 80 Wrteprohibited 7 Wrtealowed Reading the Display Convert the hexadecimal display into binary display If more than two causes they will be added Example When 84 is displayed Higher bit 8 1000 b7 Lower bit 4 0100 b2 In this case as b2 and b7 are 1 and others are 0 it can be determined that the retry cause is combined of emphasis OFF monaural original copyright exists and write allowed Example When 07 is displayed Higher bit 0 1000 All 0 Lower bit 7 0111 72 In this case as 00 bl and b2 are 1 and others are 0 it can be determined that the retry cause is combined of emphasis ON stereo or
72. e and displays op rec tm select the contents to be displayed or executed using the knob Pressing the knob will display or execute the contents selected Pressing the knob another time returns to step 4 Pressing the button displays Err Display and exits the error history mode 9 To exit the test mode press the button The unit sets into the STANDBY state the disc is ejected and the test mode ends ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Selecting the Test Mode 00 I O K D Display History Op rec tm Displays the total recording time When the total recording time is more than 1 minute displays the hour and minute When less than 1 minute displays Under 1 min The display time is the time the laser is set to high power which is about 1 4 of the actual recording time op play tm Displays the total playback time When the total playback time is more than 1 minute displays the hour and minute When less than 1 minute displays Under 1 min spdl rp tm Displays the total rotating time of the spindle motor When the total rotating time is more than 1 minute displays the hour and minute When less than 1 minute displays Under 1 min retry err Displays the total number of retry errors during recording and playback Displays r xx p yy xx is the number of errors during recording yy is the number of errors during playback This is displayed in hexadecimal from 00 to FF total err Displays the total number of
73. e enable signal output for DRAM S stands for Schmidt input I A for analog input O 3 for 3 state output and O A for analog output in the column I O 53 MDS JE770 Je To e m e Data input output for DRAM xs mo 16 kenane RAS o Pi Bae smo os wi ENE sa ni OI I Gan 5 Pwecmmmowpuir ensnigHReE LS iterinpu Tor tne ecotnghlaback EFM mp OOOO 5 among peak out he PO Liga signal vonom om he Des wo ue eranu pu tomte CAR FE roc eror sier pu tomme AR TT pi EN m E pin U my Ano ow Montor ouput ofthe AD comen pu sna 7 mp sopes _ amr Tres a comer operat range nivele pa eia E _ m am 109 comer optional range over mi voltage TT m ws oao 0 w w e ois emes i u Lom mm a L mew olee ux ConoiashoupuioiteCXARSEBAR cur CmmidwkempuwieCXESDBAR pm cmon _ Amm o Refewnce PN op tor he ser ap eso O PE QE _ ss m iiki senor omo _ I I Abbreviation EFM Eight to Fourteen Modulation PLL Phase Locked Loop VCO Voltage Controlled Oscillator 54 MDS JE770 wr VF BUM Ta
74. e test mode will be displayed However if the nonvolatile memory is abnormal the following will be displayed INIT EEP Press the LI button 2 EJECTI button together Rotate the knob and select MDM 7A 5 Press the knob If the nonvolatile memory is successfully overwritten the normal test mode will be set and a message to select the test mode will be displayed IU Note When this setting is doing readjustment is necessary Adjustment it same as IC195 exchanged 24 MDS JE770 SECTION 5 ELECTRICAL ADJUSTMENTS Note 260B KMS 260B 260E KMS 260E 5 1 PARTS REPLACEMENT AND ADJUSTMENT If malfunctions caused by Optical pick up such as sound skipping are suspected follow the following check Check before replacement 5 6 2 Laser Power Check See page 28 NG 5 6 3 Iop Compare See page 28 5 6 4 Auto Check See page 29 Replace Optical pick up or MDM 7A OK Other faults are suspected Check the threading mechanism etc 25 MDS JE770 Adjustment flow Start Abbreviation OP Optical pick up After turning off and then on the power initialize the EEPROM For details refer to 4 11 WHEN MEMORY NG IS DISPLAYED See page 24 Replace IC195 NO YES 5 7 INITIAL SETTING OF ADJUSTMENT VALUE Replace OP or IO195 See page 31 5 9 TEMPERATURE COMPENSATION OFFSET Replace IC101 IC195 or D101 ADJUSTMENT See page 31 Replace OP IC190
75. eck the error rate Checking Procedure 1 Insert a recordable test disc MDW 74 GA 1 into the unit 2 Rotate the KIK AMS DP knob to display MODE C34 Press the button to display the CRECI MID 4 When recording starts is displayed this becomes CREC 1 is the address and recording starts 5 About 1 minute later press the MENU NO button to stop continuous recording 6 Rotate the knob to display C PLAY 1 MODE C34 7 Press the button to display C PLAY1 MID W a 1 gt 1 z E ex E 3 lt lt 9 Check that the C error becomes below 20 and the AD error below 2 10 Press thej MENU NO button to stop playback and press the amp EJECT button and remove the disc 5 7 INITIAL SETTING OF ADJUSTMENT VALUE Note Mode which sets the adjustment results recorded in the non vola tile memory to the initial setting value However the results of the temperature compensation offset adjustment will not change to the initial setting value If initial setting is performed perform all adjustments again ex cluding the temperature compensation offset adjustment For details of the initial setting refer to 5 4 Precautions on Ad justments and execute the initial setting before the adjustment as required Setting Procedure 1 Rotate the AMS DPI knob to display ADJCLEAR C28
76. elow 3 1 DISASSEMBLY FLOW Abbreviation SP Singapore 3 10 SLED MOTOR 3 9 LOADING MOTOR ASSY M102 ASSY M103 3 11 OPTICAL PICK UP KMS 260B 260E 3 12 SPINDLE MOTOR ASSY M101 Note 2 You cannot go to the next process until every process enclosed with has done Note 1 The processes enclosed with remove in the any order 13 MDS JE770 3 2 UPPER CASE 408226 Case 408226 Two screws CASE 3TP2 Screw r CASE 3TP2 0 Two screws CASE 3TP2 4 P ST 3 3 FRONT PANEL SECTION Connector CN830 Wire flat type 17 CN3 Q Three screws BVTP3x8 Claw Front panel Two screws BVTP3x8 14 MDS JE770 3 4 MAIN BOARD Two screws BVTP3x8 Q Connector CN400 x Wire flat type 23core CN1 Wire flat type 27core CN2 MAIN board Three screws BVTP3x8 screw BVTP3x8 AY 3 5 BOARD VOL SEL BOARD SP model Three screws PTTWH M3 PT board O Connector CN900 Q Two screws md BVTP3x8 SP model Connector CN990 SP model VOL SEL board SP model Nylom rivet dia 3 15 MDS JE770 3 6 MECHANISM DECK SECTION MDM 7A Mechanism deck Two step screws BVTTWH M3 Two step screws BVTTWH M3 3 7 OVER LIGHT HEAD HR901 BD BOAR
77. f diagnosis function Cause Remedy The deck could not read the TOC on the MD properly The deck s self diagnosis function automatically checks the condition of the MD deck when an error occurs then issues a three or five digit code and an error message on the display If the code and message alternate find them in the following table and perform the indicated countermeasure Should the problem persist consult your nearest Sony dealer C14 Toc Error Insert another disc If possible erase all the tracks on the MD The sound source is a copy of commercially available music software or you tried to record a CD R Recordable CD The Serial Copy Management System prevents making a digital copy You cannot record a CD R Three or five digit code Message C41 Cannot Copy Cause Remedy The inserted MD is record protected Take out the MD and close the record protect slot C11 Protected The sporadic appearance of this message is caused by the digital signal being You tried to record a CD with a format recorded This will not affect the C12 Cannot Copy C13 REC Error C13 Read Error that the external device connected to the deck does not support such as CD ROM or video CD gt Remove the disc and insert a music CD The recording was not made properly gt Set the deck in a stable surface and repeat the recording procedure C71 Din Unlock The inserted MD is dirty with smudges
78. fingerprints etc scratched or substandard in quality E0001 MEMORY NG Replace the disc and repeat the recording procedure The deck could not read the TOC on the MD properly gt Take out the MD and insert it again recording While recording from a digital component connected through the DIGITAL IN connector the digital connecting cable was unplugged or the digital component turned off Connect the cable or turn the digital component back on There is an error in the internal data that the deck needs in order to operate gt Consult your nearest Sony dealer There is a problem with the optical pickup The optical pick up may have failed Consult your nearest Sony dealer Procedure for using the Self Diagnosis Function Error History Display Mode Note Perform the self diagnosis function in the error history display mode in the test mode The following describes the least required procedure Be careful not to enter other modes by mistake If you set other modes accidentally press the MENU NO button to exit the mode MDS JE770 1 While pressing the knob and W button connect the power plug to the outlet and release KIAAGAMSPPIJknob and button When the test mode is set Check will be displayed Rotate the knob and when Service is displayed press the button Rotate the knob and display Err Display Pressing the button sets the error history mod
79. gt FERRITE FERRITE IC OUH OUH IC M30803MG 106FP IC NJM2114D IC NJM2114D IC NJM2114D IC NJM4558D IC 033 IC 1 IC M5F7805L IC M5293L IC M54641L IC AK4524 IC SNZAHCUOAAN IC SNZAHCUOAAN IC GP1F38R DIGITAL IN1 IC GP1F38R DIGITAL IN2 SP IC GP1F38T DIGITAL OUT lt JACK gt JACK PIN 4P ANALOG IN OUT JACK PIN 1P COAXIAL IN AEP UK JACK SMALL TYPE 2 GANG CONTROL A1 II lt COIL gt INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR 1uH 10uH 10uH lt TRANSISTOR gt TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR UN4211 TA UN4211 TA UN4211 TA 2SD1915 F T TA S0 2SD1915 F T TA S0 2SD1915 F T TA S0 2SD1915 F T TA S0 UN4111 TA UN4211 TA 2SA1115TP EF 0490 0821 0822 0851 0911 R3 R9 R17 R21 R22 R23 R28 R41 R44 R46 R49 R51 R53 R55 R61 R87 R88 R90 R91 R92 R93 R94 R95 R97 R100 R111 R112 R113 R115 R161 R162 R163 R164 R165 R166 R171 R172 R176 R177 R178 R181 R190 R191 R211 R212 R213 R215 R261 R262 R263 R264 R265 R266 8 729 194 57 8 729 620 05 8 729 620 05 8 729 620 05 8 729 922 37 1 247 807 31 1 249 425 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 441 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11 1 249 429 11
80. he results are bad indicates the current value set and indicates the value written in the non volatile memory 5 6 2 Laser Power Check Before checking check the Iop value of the optical pick up Refer to 5 8 Recording and Displaying Iop Information Connection Laser power meter s Optical pick up objective lens Digital volt meter BD board 105 pin I 3V 2 105 pin Q IOP om 28 Checking Procedure 1 Set the laser power meter on the objective lens of the optical pick up When it cannot be set properly press the lt lt button or PP button to move the optical pick up Connect the digital volt meter to CN105 pin 1 I 3V and CN105 pin 2 IOP 2 Then rotate the knob and display LDPWR CHECK Check that the reading of the laser povver meter become the specified value 4 Press the button once more and display LD 7 0 mW volt meter satisfy the specified value Specified Value Laser power meter reading LD 0 9mW 0 85 0 91mW 260B 0 90 0 96mW 260E LD 7 0mW 6 80 7 20mW 260B 7 00 7 50mW 260E Digital voltmeter reading Optical pick up displayed value 10 Optical pick up label KMS260B For details of the method for checking 20101 this value refer to 5 8 Recording and H0576 Displaying lop Information lop 57 6 mA in this case lop mA Digital voltmeter reading mV 1 Q 5 Press the MENUJ NO button and displa
81. ibly DISC IN will be displayed in this case Load a test disc MDW 74 GA 1 which can be recorded If a disk is loaded at step 2 the check will start automatically 4 When XX CHECK is displayed the item corresponding to XX will be performed When 06 CHECK completes the disc loaded at step 2 will be ejected DISC IN will be displayed Load the check disc MD TDYS 1 5 When the disc is loaded the check will automatically be resumed from 07 CHECK 6 After completing to test item 12 check OK or NG will be displayed If all items are OK CHECK ALL OK will be displayed If any item is NG it will be displayed as NG XXXX W When CHECK ALL OK is displayed it means that the optical pick up is normal Check the operations of the other spindle motor thread motor etc When displayed as NG xxxx it means that the optical pick up is faulty In this case replace the optical pick up 5 6 5 Other Checks All the following checks are performed by the Auto Check mode They therefore need not be performed in normal operation 1 Load a continuously recorded test disc MDW 74 GA 1 Refer to 5 5 Using the Continuously Recorded Disc 5 6 6 Traverse Check Connection Oscilloscope BD board CN105 pin TE O lt 105 pin VC ga V 0 5 V div H 10 ms div Input DC mode Checking Procedure 1 Connect an oscilloscope to CN105 pin 4 TE and CN105
82. iginal copyright exists and write prohibited Hexadecimal Binary Conversion Table Hexadecimal Hexadecimal Binary 0000 1000 0001 1001 0010 1010 11 MDS JE770 Parts Identification SECTION 2 GENERAL This section is extracted from instruction manual The items are arranged in alphabetical order Refer to the pages indicated in parentheses for details Main unit 21 4 6 7 8 9 HO HU 72 3 14 158 16 AMS 26 15 20 25 35 39 CLEAR 25 23 30 40 Display window 01 EJECT 18 11 20 25 GROUP ON OFF 3 13 22 31 GROUP SKIP 4 13 22 31 INPUT 22 11 LEVEL DISPLAY CHAR 11 21 29 MD insertion slot MDLP indicator 7 14 21 MENU NO NA 15 22 25 35 39 17 18 19 20 PC LINK KEYBOARD 39 PHONE LEVEL 16 21 PHONES jack 15 17 21 36 PLAY MODE 8 20 37 REC MODE 02 14 22 REC 24 11 Remote sensor REPEAT 19 20 STANDBY indicator 4 11 20 TIME 5 17 21 TIMER 14 37 YES 13 15 23 25 35 39 BUTTON DESCRIPTIONS 1 0 1 11 20 Q5 9 11 20 37 40 40 39 20 101011 1110411 20 25 37 40 40 26 20 44 1 MDS JE770 only 2 MDS JET770 only For MDS JE470 the remote sensor is located on the display window MDS JE770 SECTION 3 DISASSEMBLY e This set can be disassembled in the order shown b
83. ing adjustments After completing the adjustments exit the test mode Perform the adjustments and checks in group S of the test mode 3 Perform the adjustments to be needed in the order shown 4 Use the following tools and measuring devices Check Disc MD TDYS 1 Parts No 4 963 646 01 e Test Disk MDW 74 GA 1 Parts No 4 229 747 01 Laser power meter LPM 8001 Parts No J 2501 046 A or MD Laser power meter 80105 Parts No J 2501 145 A Oscilloscope Measure after performing CAL of prove Digital voltmeter Thermometer Jig for checking BD board waveform Parts No J 2501 196 A Adjustment 5 7 Initial setting of adjustment values 5 8 Recording of Iop information 5 9 TEMP ADJUST 5 10 Laser power adjustment 5 11 Iop NV Save 5 12 Traverse adjustment 5 13 Focus bias adjustment 5 16 Auto gain adjustment 5 6 4 AUTO CHECK MDS JE770 5 When observing several signals on the oscilloscope etc make sure that VC and ground do not connect inside the oscillo scope VC and ground will become short circuited 6 Using the above jig enables the waveform to be checked with out the need to solder Refer to Servicing Note on page 6 7T As the disc used will affect the adjustment results make sure that no dusts nor fingerprints are attached to it Parts to be replaced Optical C101 102 IC151 IC190 IC195 Pick up MDS JE770 5 5 USINGTHE CONTINUOUSLY RECORDED DISC This disc is use
84. knob and display FBIAS ADJUS C09 i 8 00 The first four digits indicate the C error rate the two digits after indicate ADER and the 2 digits after a 2 indicate the focus bias value Rotate thej I KKK AMS DP knob in the clockwise direction and find the focus bias value at which the C error rate becomes 220 Refer to Note 2 Press the button and display 00 00 b DO Rotate the lt KK AMS Pb Prill knob in H counterclockwise di rection and find the focus bias value at which the C error rate becomes 220 Press the button and display F ES e HR Check that the C error rate is belovv 20 and ADER is 00 Then press YES ES button If the in Hi GG BO is above 20 press the button If below 20 press the MENU NO button and repeat the Gjumi from step 2 Press the JA EJECT button to remove the test disc Note 1 The relation between the C error and focus bias is as shown in the following figure Find points a and bin the follovving figure using the above adjustment The focal point position C is automatically calculated from points a and b Note 2 As the C error rate changes perform the adjustment using the average vale C error 220 b C a Focus bias value F BIAS 33 MDS JE770 5 14 ERROR RATE CHECK 5 14 1 CD Error Rate Check Checking Procedure 1 Load a check disc MD TDYS 1 2
85. n DRAM overflow 3 9 Loading Motor Assy M103 T 17 3 10 Sled Motor Assy M102 Slider 18 Reny oorun ka aa TOC wng 3 11 Optical Pick ap cc 18 Retry aborted during S F editing 3 12 Spindle Moter Assy M101 19 Other than access processing and could not read address ATEST MODE cm S 20 Focus NG occurred and overran 5 ELECTRICAL ADJUSTMENTS 25 MODEL IDENTIFICATION SA 6 DIAGRAMS Part No 6 1 Circuit Boards Location 36 6 2 Block Diagrams 38 s EU DUO apa bu ea QR aa 39 6 3 Printed Wiring Board BD Board 40 6 4 Schematic Diagram BD Section 1 2 41 6 5 Schematic Diagram BD Section 2 2 42 6 6 Schematic Diagram Main Section 1 2 43 6 7 Schematic Diagram Main Section 2 2 44 6 8 Printed Wiring Board Main Section 45 TU 21222 46 6 10 Schematic Diagram Display Section 47 6 11 Printed Wiring Board Power Section 48 6 12 Schematic Diagram Power Section 49 6 15 IC Block Dra rans kaa aa
86. ng start addresses for IN MID and OUT are as follows IN 40h cluster MID 300h cluster OUT 700h cluster Note 2 The button can be used to stop recording anytime Note 3 Do not perform continuous recording for long periods of time above 5 minutes Note 4 During continuous recording be careful not to apply vibration 22 MDS JE770 4 6 FUNCTIONS OF OTHER BUTTONS la _ Sets continuous playback when pressed in the STOP state When pressed during continuous playback the tracking servo turns ON OFF Lw ademe p gt The sled moves to the outer circumference only when this 1s pressed The sled moves to the inner circumference only when this is pressed amp iwa _ T 4 7 TEST MODE DISPLAYS Each time the LEVEL DISPLAY CHAR button is pressed the display changes in the following order When CPLAY and CREC are started the display will forcibly be switched to the error rate display as the initial mode 1 Mode display Displays TEMP ADJUST C03 CPLAY1MODE C34 etc I Mode display 2 Error rate display Displays the error rate in the following way C Indicates the C error AD Indicates ADER Error rate display Address display Auto gain display Not used in servicing 3 Address display The address is displayed as follows MO recordable disc CD playback only disc If the REC MODE button is pressed the display switches from groove to pit or
87. olves rewriting the reference values do not perform this procedure except when adjusting the laser power during replacement of the OP and when replacing the 02 Otherwise the OP check may deteriorate Note Perform this function with the optical pick up set at room temperature Procedure 1 Rotate the knob to display lop NV Save C06 2 Press the button and display Istopl 3 After the display changes to lop xxsave press the button 4 After Complete is displayed momentarily the display changes to 7 0 mW 5 After the display changes to press the button 6 When Complete is displayed it means that lop NV saving has been completed 32 5 12 TRAVERSE ADJUSTMENT Connection Oscilloscope BD board CN105 pin TE lt 105 VC ga V 0 5 V div H 10 ms div Input DC mode Adjusting Procedure 1 Connect an oscilloscope to CN105 pin 4 TE and CN105 pin 6 VC of the BD board 2 Load a test disc MDW 74 GA 1 Refer to Note 1 3 Press the P button and move the optical pick up outside the pit 4 Rotate the knob and display EF MO ADJUS C07 Laser power READ power Focus servo ON tracking servo OFF spindle S servo ON 6 Rotate the KIK AMS DP knob so that the waveform of the oscilloscope becomes the specified value waveform varies at intervals of approx 2 Adjust the
88. p signal input from the CXD2662R I Data signal input output pin with the EEP ROM I Disk reflection rate detection input from the reflect detection switch H Disk with low reflection rate ET TT REFLECT ON N QN 67 68 71 72 80 LOAD IN Loading motor control output H loading NG _Pin No KH 6 z Le NL a M WE NE 52 5 E Lj MEME N AE EN NBI ME een 72 80 Q Z lt 0 r clo g 5 MDS JE770 Not used Fixed at L D VOLO 1 JOGO JOGI o _ i DISTINATION MODEL SEL 58 MDS JE770 760 MSM9201 04GS K FL DRIVER DISPLAY BOARD AD3 ADA Fluorescent display tube FL760 anode electrode drive SEGI 35 VDISPI COMI 24 VFLI Fluorescent display tube FL760 segment electrode drive Power supply for fluorescent display tube FL760 drive Fluorescent display tube FL760 grid electrode drive Power supply for fluorescent display tube FL760 drive Ground OSCO OSCI RESET Input for CR oscillation Output for CR oscillation Reset input Chip select signal input from system controller IC1 Shift clock signal input from system controller 1C1 Serial data signal input from system controller IC1 Power supply LED drive signal output LED drive signal output LED drive signal output Not used in this set NC L
89. pin 6 VC of the BD board 2 Load a test disc MDW 74 GA 1 Refer to Note 1 3 Press the La button and move the optical pick up outside the pit 4 Rotate the IK AMS Pol knob and display EF MO CHECK Laser power READ power Focus servo ON tracking servo OFF spindle S servo ON MDS JE770 6 Observe the waveform of the oscilloscope and check that the specified value is satisfied Do not rotate the AMS knob Read power traverse checking Traverse Waveform vc MA KARNAN 1 1 I TI Specified value Below 10 offset value IA BI 2 A B Offset value X 100 8 Observe the waveform of the oscilloscope and check that the specified value is satisfied Do not rotate the lt lt AMS Pol knob Write power traverse checking Traverse Waveform uM I UJ ve MBIN A WAR I Specified value Below 10 offset value IA BI X 100 2 A B Offset value Then the optical pick up moves to the pit area automatically and servo is imposed 10 Observe the waveform of the oscilloscope and check that the specified value is satisfied Do not rotate the AMS lt lt lt knob Traverse Waveform U ve MBIN A WAR I Specified value Below 10 offset value IA BI X 100 2 A B Offset value 11 Press the button display EF MO CHECK C14 The disc stops rot
90. play lop Read C26 and press the YES button 2 f Hh is displayed and the recorded contents are displayed indicates the value labeled on the pick up indicates the lop value after adjustment 3 To end press lt lt AMS Pol button or MENU NO button to display Read C26 MDS JE770 5 9 TEMPERATURE COMPENSATION OFFSET ADJUTMENT save the temperature data at that time in the non volatile memory as 25 C reference data Note 1 Usually do not perform this adjustment 2 Perform this adjustment in an ambient temperature of 22 C to 28 Perform it immediately after the power is turned on when the internal temperature of the unit is the same as the ambient temperature of 22 C to 28 C 3 When D101 has been replaced perform this adjustment after the temperature of this part has become the ambient tempera ture Adjusting Procedure 1 Rotate the knob and display TEMP ADJUS CO3 2 Press the button and select the TEMP ADJUS CO3 mode displayed 4 To save the data press the button When not saving the data press MENU NO button displayed and turned back to TEMP ADJUS C03 display then When the MENU NO button is pressed TEMP ADJUS will be displayed immediatelly Specified Value OF 10 IF and 20 2F 5 10 LASER POWER ADJUSTMENT Check the Iop value of the optical pick up before adjustment
91. re and erase the history Procedure 1 Press lt knob when displayed as op change 2 Press the YES button when the display changes to op change When Complete is displayed it means erasure has completed MDS JE770 spdl change Mode for erasing the total spdl rp tm time These histories are based on the time of replacement of the spindle motor If the spindle motor has been replaced perform this procedure and erase the history Procedure 1 Press the lt I4 AMSPDIl knob when displayed as spdl change 2 Press the button when the display chan es to spdl change When Complete is displayed it means erasure has completed Table of Error Codes TABLE OF CONTENTS Error Code 1 SERVICING NOTES ied mE C ER 5 Timed out without reading the top of PTOC Could read top of PTOC but detected error 3 DISASSEMBLY Timed out without accessing UTOC Disassempl y E S 13 3 2 Upper Case 408220 0 EE A 14 Timed out without reading UTOC AB oni Panel Secon 14 Error in UTOC 2 4 BOSE ana teo C teer eee bn E Pp E cena 15 Could not start playback 3 5 PT Board VOL SEL Board SP MOJCI Nja uu eei 15 3 6 Mechanism Deck Section MDM 7A 16 3 7 Over Light Head HR901 BD Board 16 Retry cause generated during normal recording 23 09 Holder iss u u Quan Met A ed 17 Retried i
92. ri 3 RESET VCC S E TO FL750 STANDBY 0726 PUSH ENTER BT406 G24 1 421 701 706 711 712 FLUORESCENT INDICATOR TUBE 9714 716 721 724 FL 50 5726 5731 733 AUDI0 CIRCUIT 0775 MD LP ae UNREG 12V D466 467 Q755 EIS UNREG 12V VY 041 1 LOADING MOTOR es DRIVER 1 440 B F FA 5V 3 3V REGULATOR Q490 VT 33V _ T0 IC500 39 39 MDS JE770 6 3 PRINTED WIRING BOARD BD Board See page 36 for Circuit Board Location There are a few cases that the part isn t mounted in model is printed on diagram OPTICAL PICK UP BLOCK KMS 260B 260E BD BOARD SIDE A BD BOARD SIDE B O pu Semiconductor HR901 Locati e Semiconductor 0 ocation MAIN BOARD MAIN BOARD CN CN2 Page 45 Page 45 40 40 MDS JE770 6 4 SCHEMATIC DIAGRAM BD SECTION 1 2 See page 37 for Waveforms See page 52 for IC Pin Functions See page 50 for IC Block Diagrams m A BD BOARD 172 0151 172 25A1576A T gt z RI36 113 9 0135 2
93. rk A are critical for safety Replace only vvith part number specified Ref No Part No Description Remarks Ref No Part No Description Remarks 351 A 4725 A71 A BD BOARD COMPLETE 362 4 232 270 01 SCREW 1 7X3 5 PWH 352 4 231 319 01 SCREW 2X6 CZN B P TRI 363 4 226 990 01 BASE BU A 353 3 372 161 01 SGREVV M1 7 TAPPING 364 4 227 023 01 SPRING SPINDLE TORSION 354 4 226 993 01 RACK 365 4 227 004 01 GEAR LC 355 4 227 014 01 SPRING RACK COMPRESSION 366 4 227 005 01 GEAR LD 356 4 226 992 01 BASE SL 367 4 227 009 01 GEAR SD 357 1 678 514 11 FLEXIBLE BOARD 368 4 221 008 01 GEAR SC A 358 A 4672 541 A OPTICAL PICK UP KMS 260E HR901 1 500 670 11 HEAD OVER LIGHT 359 4 988 560 01 SCREW P 1 7X6 M101 A 4672 898 A MOTOR ASSY SPINDLE 360 4 996 265 01 SHAFT MAIN M102 4735 076 MOTOR ASSY SLED 361 4 226 989 01 CHASSIS M103 4735 074 MOTOR ASSY LOADING S102 1 771 957 11 SWITCH PUSH 2 KEY REFLECT PROTECT SW 63 MDS JE770 NOTE Due to standardization replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set XX X mean standardized parts so they may have some difference from the original one tems marked are not stocked since they are seldom required for routine service Some delay should be anticipated when ordering these items e CAPACITORS uF uF RESISTORS All resistors are in ohms
94. s Refer to 5 8 Recording and Displaying lop Information Laser power meter NEN Optical pick up objective lens Digital volt meter BD board CN105 pin 143V o Oo CN105 pin IOP se Connection Adjusting Procedure 1 Set the laser power meter on the objective lens of the optical pick up When it cannot be set properly press the 44 button button to move the optical pick up Connect the digital volt meter to CN105 1 1 3 and CN105 pin Q IOP 2 Rotate the knob and display LDPWR ADJUST C04 Laser power For adjustment 4 Rotate thej KA AMS Pl knob so that the reading of the laser power meter becomes the specified value Press the button after setting the range knob of the laser power meter and Oo P gt 7 AQ ex D E lt E NO 2 oe 6 Rotate the X AMS PPT knob so that the reading of the laser power meter becomes the specified value press the button and save it Note Do not perform the emission with 7 0 mW more than 15 seconds continuously 21 MDS JE770 7 Then rotate the IK AMS gt gt knob and display LDPWR CHECK C13 Check that the reading of the laser power meter become the speci fied value 9 Press the button once more and display LD 7 0 mW volt meter satisfy the specified value Note down the digi
95. s the button and display iG ce HP The first four digits indicate the C error rate the two digits after indicate ADER and the 2 digits after c 2 indicate the focus bias value Check that the C error is below 20 and ADER is below 2 7 Press button and display 11 016 HH Check that the C error is below 100 and ADER is below 2 8 Press the button and display 000 00 a GU Check that the C error is below 100 and ADER is below 2 9 Press thej MENU NO button next press the amp EJECT button and remove the test disc 30 5 6 8 C PLAY Check MO Error Rate Check Checking Procedure 1 Load a continuously recorded test disc MDW 74 GA 1 Refer to 5 5 Using the Continuously Recorded Disc 2 Rotate the knob and display CPLAY1 MODE C34 Press the button and display CPLAY1 MID If the C error rate is below 20 check that ADER 18 00 Press the IMENU NO button stop playback press 2 EJECT button and test disc CD Error Rate Check Checking Procedure 1 Load a check disc MD TDYS 1 2 Rotate the knob and display CPLAY1 MODE C34 Press the button twice and display CPLAY 1 MID Check that the C1 error rate 1s below 20 Press the MENU NO button stop playback press the amp EJECT button and the test disc 5 6 9 Self Recording playback Check Prepare a continuous recording disc using the unit to be repaired and ch
96. sc MD TDYS 1 Roteto knob and display EF CD ADJUS C08 Press the button and display EFB ii CD Servo is imposed automatically Rotate thej gt 1 gt 1 AMS Pol knob so that the waveform of the oscilloscope moves closer to the specified value In this adjustment waveform varies at intervals of approx 290 Adjust the waveform so that the specified value is satisfied as much as possible Traverse Waveform gt Specification B Press the button display EFB 00 SAVE for mo ment and save the adjustment results in the oa memory Next EF CD ADJUS C08 will be displayed Press the amp EJECT button and remove the check disc MD TDYS 1 Note 1 MO reading data will be erased during if a recorded disc is Note 2 used in this adjustment If the traverse waveform is not clear connect the oscillo scope as shown in the following figure so that it can be seen more clearly Oscilloscope BD board 330 CN105 pin TE O lt CN105 pin VC 5 MDS JE770 5 13 FOCUS BIAS ADJUSTMENT Adjusting Procedure UM 2 10 11 12 13 Press the button and display Load a test disk MDW 74 GA 1 Rotate the AMS lt lt 1 knob and display CPLAY1 MODE C34 Press the button and display CPLAY1 MID Press MENU NO button when C iii AD ti is displayed Rotate the Ma AMS DPI
97. tal voltmeter reading value Specified Value Laser power meter reading LD 0 9mW 0 85 0 91mW 260B 0 90 0 96mW 260E LD 7 0mW 6 90 7 10mW 260 7 20 7 30mW 260E Digital voltmeter reading Optical pick up displayed value 10 Optical pick up label For details of the method for checking this value refer to 5 8 Recording and Displaying IOP Information KMS260B 20101 H0576 lop 57 6 mA in this case lop mA Digital voltmeter reading mV 1 Q 10 Press the button and display LDPWR CHECK C13 and stop the laser emission The button is effective at all times to stop the laser emission 11 Rotate the knob to display Iop Write C05 12 Press the YES Jbutton When the display becomes Ref is an arbitrary number press the YES button to display Measu is an arbitrary number 13 The numbers which can be changed will blink Input the Iop value noted down at step 9 To select the number Rotate the gt 1 gt AMS DA knob To select the digit Press the lt AMS DI knob 14 When the button is pressed Complete will be displayed momentarily The value will be recorded in the non volatile memory and the display will become Write C05 Note 1 After step 4 each time the button is pressed the to be performed here 5 11 lop NV SAVE Write the reference values in the nonvolatile memory to perform Top compare As this inv
98. the test mode is set TEMP CHECK C12 will be displayed By setting the test mode using this method only the Check group of method 1 can be executed NOTE Do not use the test mode in the Develop group If used the unit may not operate normally If the Develop group is set accidentally press MENU NO button immediately to exit the Develop group 4 3 EXITING THETEST MODE Press the REPEAT button The disc is ejected when loaded and Standby display blinks and the STANDBY state is set 4 4 BASIC OPERATIONS OF THE TEST MODE All operations are performed using the IKKI AMS PPI knob button and MENU NO button The functions of these buttons are as follows Fame name Fon knob Push Set submenu 20 MDS JE770 4 5 SELECTING THE TEST MODE There are 26 types of test modes as shown below The groups can be switched by rotating the knob After selecting the group to be used press the button After setting a certain group rotating the knob switches between these modes Refer to Group in the table for details selected All adjustments and checks during servicing can be performed in the test mode in the Service group NOTE Do not use the test mode in the Develop group If used the unit may not operate normally If the Develop group is set accidentally press the MENU NO button immediately to exit Develop group FBIAS ADJUS Focus bias adjustment AG Set MO Focus tracking g
99. the unit CAUTION INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED AVOID EXPOSURE TO BEAM ADVARSEL USYNLIG LASERSTRALING VED ABNING N R SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION UNDG UDSAETTELSE FOR STRALING VORSICHT UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GE FFNET UND SICHEREITSVERRIEGELUNG BERBR CKT NICHT DEM STRAHL AUSSETZEN VARO AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT TIINA NAKYMATTOMALLE LASERSATEILYLLE ALA KATSO SATEESEEN VARNING OSYNLING LASERSTRALING NAR DENNA DEL PPNAD OCH SPARREN AR URKOPPLAD BETRAKTA EJ STRALEN ADVERSEL USYNLIG LASERSTRALING NAR DEKSEL APNES OG SIKKERHEDSLAS BRYTES UNNGA EKSPONERING FOR STRALEN VI GYAZATI A BURKOLAT NYITASAKOR LATHATATLAN L ZERSU GARVESZ LY KER LJE A BESUGARZASTI CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radia tion exposure Notes on chip component replacement Never reuse a disconnected chip component Notice that the minus side of a tantalum capacitor may be damaged by heat Flexible Circuit Board Repairing Keep the temperature of soldering iron around 270 C during repairing Do not touch the soldering iron on the same conductor of the circuit board within 3 times Be careful not to apply force on the conductor when soldering or unsoldering SAFETY RELATED COMPONENT WARNING COMPONENTS IDENTIFIED BY M
100. uF C152 1 164 156 11 CERAMIC CHIP 0 1uF C153 1 164 156 11 CERAMIC CHIP 0 1uF C154 1 126 206 11 ELECT CHIP 100uF 6155 1 164 156 11 CERAMIC CHIP 0 1 C156 1 164 156 11 CERAMIC CHIP C157 1 164 156 11 CERAMIC CHIP O 1uF C158 1 162 927 11 CERAMIC CHIP 100PF C159 1 162 927 11 CERAMIC CHIP 100PF 64 SECTION 8 COILS uH WH SEMICONDUCTORS In each case u u for example uA WA UPA UPA 4 uPB UPB uPC UPC uPD UPD Abbreviation SP Singapore model Remarks Ref No 6160 6161 6162 C163 C164 20 6 3V 20 6 3V C165 10 25 C166 10 25 C167 5 25V C169 C171 10 25V 10 29 C172 F 10 25V C180 10 16V 6181 25V 6182 C183 10V 10 16V 6184 F 10 50V 6185 10 6 3V 6191 F 10 50V 0192 0193 10 25 10 25 0194 10 16V 6195 10 16V C196 25V C1401 25V 10V 25V CN101 10V CN102 25V CN103 CN104 25V CN105 20 6 3V 25V 25V 10 25V D101 D181 25V D183 10V 25V 25V 20 6 3V 16101 10102 25V 16141 25V IC151 25V IG153 5 50V 5 50V IC171 IC181 ELECTRICAL PARTS LIST When indicating parts by reference number please include the board name The components identified by mark or dotted line with mark are critical for safety Replace only with part number specified Part No 1 162 927 11 1 162 970 11 1 162 970 11 1 125 891 11 1 162 927 11 Description CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC C
101. ug to the outlet and release the gt 1 gt 1 AMS DP knob and button Rotate the IKI AMS PIPI knob to display Service and press the button Rotate the gt 1 gt 1 AMS PPI knob to display Write C05 and press the button The display becomes Ref is an arbitrary number and the numbers which can be changed will blink Input the Iop value written on the optical pick up To select the number Rotate the gt 1 gt 1 AMS DA knob To select the digit Press the AMS DP knob When the button is pressed the display becomes Measu is an arbitrary number As the adjustment results are recorded for the 6 value Leave it as it is and press thej YES button Complete will be displayed momentarily The value will be recorded in the non volatile memory and the display will become Write Press the REPEAT button to complete Display Precedure 1 While pressing the IKKI AMS PIPI knob and M button connect the power plug to the outlet and release the KK AMS PIPI knob and button Rotate the KA AMS Pol knob to display and press the button Rotate the KIK AMS PP knob to display Read C26 15 displayed and the recorded contents are displayed indicates the lop value labeled on the optical pick up indicates the lop value after adjustment To end press
102. y LDPWR CHECK and stop the laser emission The MENU NO button is effective at all times to stop the laser emission Note 1 After step 4 each time the button is pressed the needs to be performed here 5 6 3 lop Compare The current Iop value at laser power 7 mw output and reference Iop value set at shipment written in the nonvolatile memory are compared and the rate of increase decrease will be displayed in percentage Note Perform this function with the optical pick up set at room temperature Procedure 1 Rotate the knob to display lop Compare C27 2 Press the button and start measurements 3 When measurements complete the display changes to xx is the percentage of Increase decrease and OK or NG is displayed at yy to indicate whether the percentage of increase decrease is within the allowable range 4 Press thej MENU NO button to end 5 6 4 Auto Check This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick up To perform this test mode the laser power must first be checked Perform Auto Check after the laser power check and lop compare Procedure 1 Press the button If LDPWR minicheck is displayed it means that the laser power check has not been performed In this case perform the laser power check and Iop compare and then repeat from step 1 2 If a disc is in the mechanical deck it will be ejected forc

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