Sega Game Gear TV Tuner Pack Service Manual
Contents
1. 223 I eis 4 R2 9 27 28 TV RECEIVER PCB ASS Y 2 TOP VIEW 8 vHF 2 vTUN 2 UHF D GND 3 6 0 0 SMDB 5 5MB 5 gt z E EE U N 5 T O O 0 S Sn Sn B Ns AV JACK 1r c2 2 9 91 2 35 7 28 RECEIVER PCB 55 PCB 2 VIEW CF203 AV JACK 201 1 I majo 0201 cae O 330 701 C2IO RIO2 24 C10 J201 0 0 OOP gTP106 5_ TP204 um L R227 R225 0822 205 9297 i 10 O O 6 0202 d f MSI348AFP ee 5 C3928 cao2 51K 56007 2 ROO 205 20401 TP404 D202 R s 73 ma T ete Hero Si raze 250 6205 202 20 ies 2 8 soos 219 180K Loot Lo F ifs cou O O OO 207 5222 0 01 5 4 3 2 470 C213 L401 470 62 D 45C m R223 R219 407 IK 2 13 14 15 TP409 211 405 W 5 O 29 fut cre R204 2702. nn nnne nennt nennen ann tn tnnt Q 13 7 RGB PHASE ALIGNMENT eene u 14 TROUBLE SHOOTING CHART enne tnra nnno ense u s 15 TOP AND BOTTOM 23 ELECTRICAL PARTS LIST u uuu 31 EXPLODED VIEW PARTS LIST u 36 EXPLODED 37 SCHEMATIC DIAGRAM 39 DISASSEMBLY AND ASSEMBLY PROCEDURE Disassembly Fig 1 Set the unit with its channel plate downward Remove the screw 503 and the Spring Lock Washer 505 at the back face of unit Hold the side of the unit and pull out the Antenna 201 in the direction indicated by the arrow A Remove the four screws 501 and the two screws 502 at the back face of unit The special screwdriver for LH2 is necessary to remove these screws 502 Fig 2 Remove the Bottom Case 200 Fig 3 Remove the Band Select Knob 101 in the direction indicated by the arrow B Fig 4 Hold the hook of the Color Adjust Knob 102 by a Tweezers And push the hook in the direction indicated by the arrow C And remove the Color Adjust Knob 102 from the T
3. 0 01 3 9 0 0 0 C803 I LJ 5P 68P IOOK 8735 0 o LJ zod T 3e ieee 67190 10 xd m 1 702 O n TP703 M C804 0 01 0 59 0 C702 P X801 R7O L 2 R710 10 218750MHz 61 C703 220 ver o 0 1 C70I O O I 1 801 1701 F5032B3 18709 IS5uH 30P 0 51403 0 01 330 ue o m E WE o gt 5809 C806 0 0 1 50 50 7 O O O 5 O O O E NH B BN TP80 TP803 TPB807 6 TP821 TP824 TP805 TP809 O 2 a E NH H s E E TP802 m TP84 8 7 TP820 TP822 TPB23 4 8 TP8I2 TPBI5 TPBIS S sx amp z 5 1 lt 2 3 g TE m m m z v m I 5 434 0m s 6 v d 7 0 o o o a lt E 2293 24 VIDEO PCB ASS Y 1 TOP VIEW 701 4 43MHz m hul 0 N gt lt lt f 4 3 8 a 8 3 gt M OnO N m gt 2 m gt a lt Cz m m z N
4. 90 0330 15 uH MATSUSHITA L702 1 A90 0360 56 uH TDK L801 1 A90 0300 82 H MATSUSHITA X801 1 A75 0800 10 218750 MHz MIYOTA 701 1 758 40 4 43 MHz TOKYO DENPA Varicap Diode Variable Capacitor Potentiometer MATSUSHITA Ceramic Capacitor C707 1 W52 0502 5 p F 50V C705 C706 2 W52 6801 68 p F 50V C711 1 W52 8201 82 p F 50V C718 1 W52 1011 100 p F 50V C808 1 W52 1211 120 p F 50V C716 C720 27 W52 3311 330 p F 50V MURATA C702 C703 C803 3 W32 1022 1000 pF 50V KYOCERA C708 1 W32 1522 1500 pF 50V C710 C717 C807 3 W32 1032 0 01 u F 50V C701 C704 C709 C713 9 W42 1049 0 1 F 25V C714 C719 C804 C805 C806 R707 R709 2 W22 0R00 1 10W 00 R710 R711 2 W22 2213 1 10 2200 701 1 W22 3913 1 10W 390 Q ROHM R805 R806 R807 R808 6 W22 5113 1 10 5100 HOKURIKU R809 R810 KYOCERA R712 R713 R802 W22 1023 1 10 1 k2 R702 W22 1523 1 10W 1 5kQ E Um Oty Parts code Description R703 W22 1033 R705 W22 5133 R803 R804 W22 1043 ROHM R706 W22 1243 HOKURIKU W22 2243 KYOCERA W22 3343 k Miscellaneous 1 A53 0350 PCB1 contact cable SATORI TV RECEIVER PCB ASSEMBLY PCB 2 Assembly 2 PCB TV Receiver 2101 05 A51 2820 MK 2101 18 A51 2830 Consists of the following MK 2101 20 A51 2840 ITEM Oty Parts code Description J201 A62 0040 AV JACK HOSHIDEN J101 A62 0020 EXT ANT HOSHIDEN NO
5. G 3 Input Video Signal to AV Jack J201 of PCB 2 4 Adjust the bright volum of G amp G to obtain the suitable brightness Input i Input Output Output m Connection Point Apjust Color 0201 Luminance IG amp G Pattern Fig 16 i and VR702 as Generator Jack shown in Fig 17 PCB 2 Pattern Generator AV Jack G amp G Fig 16 Fig 15 Middle color in black amp white Fig 17 a 6 PLL ALIGNMENT PCB 1 1 Connect PCB 2 by FFC 2 Input DC power supply 9 0 V to Power Jack of G G 3 Input Video signal to AV Jack of J201 Input Input Input Output Output See shown in Fig 19 PCB 1 Top View Pattern Generator Set Oscilloscope Trigger out Fig 18 23 VDD gt gt Fig 19 F 7 RGB PHASE ALIGNMENT 1 Connect a PCB 2 by FFC 2 Input DC power supply 9 0 V to Power Jack of G G 3 Adjust bright volum of G amp G to obtain the suitable brightness 4 Input Video Signal to AV Jack of J201 Input Input Input Output Output Signal Step Adjust Connection Point For Color Bar CT701 TP825 Adjust CT701 as See shown in Fig 21 PCB 1 Voltage equal to Voltage Pattern Generator Oscilloscope TUNER UNIT Fig 20 Trigger in Trigger out Voltage 8 equal to voltage 8 Fig 21 Te TROUB
6. TV TUNER PACK PAL FOR GAME GEAR MK 2101 05 eet dioi fia 68 MK 2101 20 GENERAL SPECIFICATIONS e MK 2101 05 I PAL England MK 2101 18 B G PAL Germany MK 2101 20 B G PAL General Europe Receiving VHF 1 12 ch Channels UHF 21 69 ch Operating Temperature Range 5 C 40 C 41 F 104 F Storage Temperature Range 20 C 60 C 4 F 140 F Dimensions 107 2 H x 120 W x 39 D mm Weight 140 gr w o batteries Note Specifications and design are subject to change without notice CONTENTS SPECIFICATIONS CONTENTS 3 DISASSEMBLY AND ASSEMBLY PROCEDURE eren nnne nennen nnne 2 BLOCK DIAGRAM 6 ADJUST AND 7 GENERAL Si esd M 7 1 SYSTEM VOLTAGE INSPECTION PCB 2 rernm 8 2 VIDEO IF ALIGNMENT AND AFT ALIGNMENT PCB 2 9 3 RF DELAY ALIGNMENT PCB 2 u susu 10 4 TUNING DIAL CALIBRATION PCB 2 u nnne nnne nennen nnne nennen 11 5 GRADATION ALIGNMENT AND BRIGHTNESS ALIGNMENT 1 12 6 PLL ALIGNMENT PCB 1
7. mTP203 C 503 TP406 INI us R205 Osnz2o iO C201 TP202 R29 SRIOI TPIO2 DI Ds m LI 2226 1692 gt Q z reo TP201 89 15 7 TUIOI 1 O gt 9 5 SE u PRO A2 Bv E gt 2 TP403 401 n u 8 R2i6 R21 RIO5 1 _ 44 r 5 9 s gt Go u jk X o gt gt 30 EXT 840 vRao The wires of L401 must be cut TV RECEIVER PCB ASS Y PCB 2 BOTTOMI VIEW b GND 3 2 m gt Q 2 2 u E gt gt TUNING BLOCK 01 gt 5 o 522 3 lt 2 8 wv 3 gt gt 29 30 The wires of L401 must be cut EXPLODED VIEW SCHEMATIC DIAGRAM 1 1C801 5 50 283 coo x601 0 01 10 218750 SCHEMATIC DIAGRAM PCB 2 R225 10K ALS 73 106 2 C204 A207 47 10V
8. T 5 a a J a 4 gt lt 23 ML s HH mon mn I o O O O O VIDEO PCB 5 1 BOTTOM VIEW Ave A S 8112 2172 28112 171712 181719 loq VI12 8 A 1 5 length of projections of wires must be Max 0 3 mm VIDEO PCB ASS Y 1 VIEW 30 HA 388Xx 83 25 FIWIL 23 e 10HE MNb 18112 0 00 0 0 g ud 841 VI12 8 A1 YONSAL TONSAL The length of projections of wires must be Max 0 3 mm 26 25 TV RECEIVER ASS Y PCB 2 TOP VIEW UHF GND 3 vbi m gt gt CF203 5 5MDB 5 5MB EXT ANT AV JACK C224 f R2I2 9201 204 F 38 9 5 O C410 4 7 50V en 4 cis C4091 O 1 00660 L201 07962 202 07962 R22 R228 R213 W 7 gt 226 2 405 C406 R405 UP 3 6710 74 771699 5 22 PCSTAJ O E 3 C216 eol OO O O O 0 0 D CF202 5 5MC30 R222 tO o tt R401 en 2 34 5 6 7 8 GOD 5 si 7 cour 1 1
9. 60 01 5800 01 5820 01 6160 64 0240 51 2340 51 2830 51 2840 51 2440 11 1170 54 0860 83 0350 23 6806 22 0330 22 0320 22 0220 04 3001 02 1150 Parts code Description Top Case Ass y MK 2101 05 20 Top Case Ass y 2101 18 Top Case Ass y 2101 20 White Band Select Knob Color Adjust Knob Bottom Case Ass y MK 2101 05 Bottom Case Ass y 2101 18 Bottom Case Ass y 2101 20 Bottom Case Ass y MK 2101 20 White Rod Antenna Video PCB Ass y TV Receiver PCB Ass y MK 2101 05 TV Receiver PCB Ass y MK 2101 18 TV Receiver PCB Ass y MK 2101 20 Channel Indicator Ass y 9602S 9L Color Potentiometer Tapping Screws B2 x 8mm Pan Head 3 Black Tapping Screws B2 x 5mm LH Black Machine Screw M3 x 8mm Flat Head 86 x 1t Ni Tapping Screw B1 7 x 5mm Flat Head 23 5 x 0 9t Ni Spring Lock Washer Ni Stand 36 SEGA SEGA SEGA CITIZEN CITIZEN SEGA SEGA SEGA SEGA YOKOO CITIZEN CITIZEN CITIZEN CITIZEN TEITSU IRISO DENSHI ALPS TOKYO BYOUKANE TOKYO BYOUKANE TOKYO BYOUKANE TOKYO BYOUKANE TOKYO BYOUKANE SEGA PCB TOP AND VIEWS VIDEO PCB ASS Y PCB 1 VIEW 701 871 R7I2 220 4 43MHz R804 7 100K 5 d 1801 0 702 TP825 o 57202 9
10. 8 2K R226 1 104 ANT 221 160K Me c213 c218 4 Casa NP 40 40 TEPZ5 002A R204 TP201 270 0 39uH SR201 R202 0203 TP202 6 8K 1000P C201 203 1000 Q201 C217 s suos C3142 0 01 7 c2o2 R201 R205 0 01 180 22 TP404 Riot pio SR101 1M C102 c401 4 J201 9 1 100 8 3v 404 R400 153 20401 caso 1 s0v 4 7 50 Bo I99 AV JACK I VR401 1C401 100K C407 0 1 E 2 0 1 s C405 P C408 772 47 7 MK 20 2 m J404 HSJ 0838 04 010 NOT Use HSJ 0838 01 010 er201 srsis oxos 1 sesto snoa cr202 Kr 2 20 CF203 6 gt TPSLO OMB TP410 0 AMINAL C222 I use 2 2 N NOT USE ROOL NOT use l TP402 A210 1 Nor use 1 1 wor use 405 4 snio2 short TP401 408 TP403 TP407 dii 42
11. Delay Alignment Color Pattern Generator AM FM Signal Generator PCB 2 VR201 422 Channel Signal Generator VR202 DC Voltmetor Oscilloscope VR1 Color Pattern Generator VR2 Tang VR3 Channel Signal Generator VR4 Oscilloscope RGB Color Pattern Generator Phase Alignment Sasa wees Oscilloscope H PLL Alignment 1 Video IF Alignment PCB 2 L202 e Sweep Marker Generator And AFT Alignment L201 Alignment Scope AM FM Signal Generator VR801 Pattern Generator PCB 1 TC801 Color Pattern Generator Oscilloscope VR1 VR2 VR3 VR4 Fig 8 1 SYSTEM VOLTAGE PCB 2 1 Connect an I O TERMINAL K401 to 5 0 V and 34 0 V DC external power supply 2 Setthe power switch to ON 3 Output voltage 4 5 V DC 0 2 V at TP401 Output voltage 32 0 V DC 1 0 V at TP404 2 VIDEO ALIGNMENT AND ALIGNMENT PCB 2 1 Set the tuning wheel to the lowest unused VHF 2 Set the marker of Alignment Scope e 38 9 MHz 3 Set the switch of Sweep Marker Generator to the AC 4 Remove the solder bridge SR101 201 5 Connect DC power supply 5 0 V between 405 and TP402 6 Connect DC power supply 34 V 406 7 Connect DC power supply 3 5 V to TP205 8 Connect a 0 01 uF capacitor between TP204 and the OUT terminal of Sweep Marker Generator 9 Connect TP207 to the IN terminal of Sweep Marker Generator 10 VIF AL
12. IGNMENT See table 11 Connect the GND to TP205 12 Connect TP202 to the OUT terminal of Sweep Marker Generator 13 Connect TP107 to the IN terminal of Sweep Marker Generator 14 AFT ALIGNMENT See table Input Input Output Output s 4 IF 38 9MHz 1 L202 Sweep Adjust L202 to obtain a VIF Marker suitable size curve on Generator the alignment scope Alignment as shown in Fig 10 Scope IF 38 9 MHz Adjust L201 for setting the marker d between the peak a on positive and the peak b on negative as shown in Fig 11 Sweep Marker Generator Alignment Scope Fig 10 e 58 75 MHz HGG 3001 d 45 75 MHz MK 2101 Fig 9 eee lem 3 RF AGC DELAY ALIGNMENT PCB 2 1 Short the solder bridge SR 101 Short the solder bridge SR 201 2 Remove the solder bridge SR 102 3 Connect a DC power supply 5 0 V between TP405 and TP402 4 Connect a DC power supply 34 0 V to TP406 5 Setthe video signal of Color Pattern Generator to white 75 6 Turn the channel to CH21 Input Input Output Output Connection Point EDS 50 Connection Point Adjust For Color TP102 Color 1 VR202 Oscilloscope TP207 Adjust VR202 to obtain Pattern Bar a suitable size wave on Generator SIF the oscilloscope as AM FM FM shown in Fig 13 a Signal RF Generator Frequency Chan
13. LE SHOOTING CHART 1 POOR PICTURE OR NO PICTURE TP207 Video Signal PCB 2 Supply 9 0 V DC at Power jack G G Connect external antenna to TV ANT ly 5 Tune a channel for TV Fig 22 Sound produced See power supply check YES Illumination lighted YES Approx 0 65Vp p Video signal output at TP207 Fig 22 YES See illumination check See PCB 2 check Connector correctly connected PCB 1 PCB 2 YES Correctly connect PCB 1 PCB 2 See PCB 2 check Check PCB 1 2 NO SOUND 5 SINGLE LINE See PCB 2 check LCD panel 3 NO COLOR 6 WHITE OR BLACK POT ON LCD PANEL See PCB 1 check LCD panel 4 NO TUNING See PCB 2 check 7 CHECK CHART 7 1 Power Supply Check PCB 2 Supply 9 0 DC at Power jack of G amp G Approximately 32V present at TP404 Approx 34 V Present at TP406 YES Approx 34 V Present at TP800 YES YES Check L401 Check FFC 2 410 405 K401 Approximately 4 5V present YES Approx 5 V Present at TP405 YES Check L401 IC401 C405 C406 Approx 5 V Present at TP801 YES Check FFC K401 so 4G 7 2 2 Check Connect an external antenna to TV ANT Connect a DC Power Supply 34 0V to TP406 Connect a DC Power Supply 5 0V between 405 and 402 Approx 4 5V present PINS 5 and 9 of IC201 YES Approxmately 32V present
14. T USE MK 2101 18 PCB 2 TU101 1 51 2100 25 002 5 IC201 1 A71 0230 M51348AFP MITSUBISHI IC401 1 71 2000 MM1060ZMR MITSUMI Coil f L201 L202 A80 0160 294SN 0796z TOKO 2 L401 1 A79 0460 D 45C TOKIN L203 1 A90 0410 0 39 TAIYO YUDEN L204 1 A90 0350 2 7 uH MK 2101 TAIYO YUDEN 1 L205 Ceramic Capacitor A90 0330 15 pH TDK CF201 MK 2101 18 20 1 A75 0760 SFSL5 5MDB MURATA CF201 MK 2101 05 1 75 0830 SFSL6 0MDB MURATA CF202 MK 2101 18 20 1 A75 0300 CDA5 5MC30 MURATA CF202 MK 2105 05 1 A75 0310 CDA6 0MC30 MURATA CF203 MK 2101 18 20 1 A75 0780 TPSL5 5MB MURATA CF203 MK 2101 05 1 A75 0840 TPSL6 0MB MURATA CF204 1 A75 1050 KAF 38 9MS MP KYOCERA 0201 1 W13 3142 C3142 SANYO Q202 Q203 2 W03 3928 C3928 MITSUBISHI Oty Parts code Description Diode ZD401 1 A73 0390 UPC574J NEC Electrolytic Capacitor C409 A86 0010 C222 86 0430 205 218 A86 0060 C410 86 0510 S RUBICON VR401 1 83 0350 100K ALPS VR201 VR202 2 83 0530 50K MATSUSHITA 1 C204 C405 C406 A86 0350 NICHICON C401 A86 0280 C219 A86 0450 Ceramic Capacitor C211 1 W52 2701 242 213 2 W52 6201 62 p F 50V C223 1 W52 8211 820 C201 C203 C206 3 W32 1022 1000 pF 50V C216 1 W32 1522 1500 pF 50V C220 1 W32 5622 5600 pF 50V MURATA C202 C209 C214 C217 6
15. W32 1032 KYOCERA C221 C224 C101 C102 C104 C105 C207 C208 C215 C402 C407 W42 1049 C103 C210 2 W43 2244 0 22 F 25V R001 1 W22 0R00 1 10W 00 R103 1 W22 0R00 1 10 00 227 1 73 1 10W 4 7Q R205 1 22 2203 1 10W 220 R228 1 22 5103 1 10W 510 R201 1 W22 1813 1 10W 1800 R218 1 22 2213 1 10W 2200 R204 1 22 2713 1 10W 2700 ROHM R212 1 22 3313 1 10W 3300 HOKURIKU R213 R214 R222 R224 4 22 4713 1 10W 4700 KYOCERA R223 R405 2 W22 1023 1 10W 1kQ R219 1 W22 1023 1 10W 1kQ R203 1 22 2223 1 10W 2 2kQ R211 1 W22 3323 1 10W 3 3kQ R217 1 W22 4723 1 10W 4 7kQ R202 1 W22 6823 1 10W 6 8kQ R207 1 W22 8223 1 10W 8 2kQ R225 R226 2 W22 1033 1 0W 10kO R102 1 W22 1833 1 10W 18kQ R210 1 W22 5133 1 10W 51kQ ROHM R105 1 W22 1043 1 10W 100kQ HOKURIKU R221 1 W22 1843 1 10W 180kQ ROHM R401 1 W22 2243 1 10W 220kQ HOKURIKU R215 R216 2 W22 3943 1 10W 390kQ KYOCERA R101 R104 2 _W22 1053 1 10W 1MQ K401 1 A52 0860 9602S 9L K400 1 A54 0310 Z 279 8FD1 400 1 A11 1170 CH indicator 401 1 A12 0530 Lug plate of Ant t 100 100 100 101 102 200 200 200 200 201 1 2 2 2 400 K401 VR401 501 502 503 504 505 600 EXPLODED VIEW PARTS LIST 01 5740 01 5780 01 6140 05 0500 05 0580 01 57
16. at TUNING BLOCK PIN 1 YES Approx Fig 23 output at TP104 YES Specified tuner voltage supplied to tuner Fig 24 YES Power supply check Power supply check Check TUNING BLOCK Check TUNING BLOCK R103 R104 R105 C103 VIDEO signal present at TP407 VIDEO SIGNAL CHECK YES Synchronizing signal present at TP206 Fig 25 Synchronizing signal YES check Audio signal present at TP209 Fig 26 Audio Signal check GOOD 19V L VHF H UHF channel channel a b Fig 23 89 5 picture Video Signal check Check TP407 See Fig 22 NO ron Pik 18 Check 201 YES Check Check AV Jack J201 R212 L205 CF203 4 5 4201 0202 0202 R218 R225 R226 C219 TP206 synchronizing signal Fig 24 Specified Tuner Voltage 5 vH VHF H 3 0 666 Fig 25 18 SYNCHRONIZING Synchronizing signal check SYNC signal present at TP206 Fig 25 NO SOUND Audio signal check Audio signal present at TP410 Fig 24 Check IC201 CF201 C224 Audio signal present NO at IC201 Pin 13 YES Check O203 R213 J201 L401 197 7 3 PCB 1 Check Connect PCB 1 from PCB 2 Input video signal to AV Jack J201 Normal signals or voltage present at input terminal of PCB 1 from PCB 2 Check input terminal
17. nel 5 5 MHz Signal Frequency 12 Adjust VR201 until the Generator Deviation minimum noise is 50 kHz jobtained at the point Tone and not to break Signal ithe horizontal 1 kHz synchronizing signal Output Fig 13 b 90 dBu Channel Signal 471 25 MHz 70 dBu Color Pattern Generator Signal Generator PCB 2 Oscilloscope TP102 TP207 IN OUT Trigger in Trigger out Fig 12 Fig 13 a Fig 13b 4 TUNING DIAL CALIBRATION 2 1 Short the solder bridge SR 101 and SR 201 2 Connect a DC power supply 5 0 V between TP405 and TP402 3 Connect a DC power supply 34 0 V to TP406 4 Input the standard TV RF signal to TP102 Input Input Output Output Equipment Point Connection Point Color TP102 Setthe band select switch to VHF and tune the Channel to CH C Pattern Generator 82 25 MHz Adjust to the TV screen Signal 70 dBu becomes a clear Generator Tune the Channel to CH 12 Adjust For Adjust to the TV screen becomes a clear Check channel C If the TV screen not became clear picture try again Step 1 2 Adjust to the TV screen becomes a clear Check channel 21 Ifthe TV screen not became clear picture try again Step 3 4 Pattern Generator Signal Generator PCB 2 TP102 Fig 14 38 5 GRADATION ALIGNMENT AND BRIGHTNESS ALIGNMENT PCB 1 1 Connect PCB 2 by FFC 2 Input DC power supply 9 0 V to power Jack of G
18. op Case 100 Fig 5 Remove the PCB1 and the PCB2 from the Top Case 100 Hold the FFC Flexible Flat Cable and gently pull out the FFC in the direction indicated by the arrow D to remove it from the Connector K401 on the PCB2 Fig 6 Remove the screw 504 at the back face of the PCB2 and pull out the Channel Indicator Ass y 400 in the direction indicated by the arrow E Assembly Perform assembly by reversing the procedure outlined for disassembly Caution Don t forget to install the Band Select Knob 101 correctly in relation to the Channel Indicator Ass y 400 Don t forget to install the Color Adjust Knob 102 into the Top Case 100 and joint it into the Tint Potentiometer VR401 Tweezers Fig 5 PCB2 Fig 3 Fig 6 BAND SELECT BLOCK DIAGRAM TUNING TUNING UNIT VHF H V4 5 UHF VHF TUNER 32V Ls Bi 4 Bi 1 JACK IC 401 ZD 401 DC DC REGULATOR RECEIVER BLOCK 2 O lt lt x AHH SE a x 4 VIDEO CONTROL BLOCK 1 oo gt HIN o Fig 7 ADJUSTMENT AND ALIGNMENT GENERAL DESCRIPTION The adjustments and alignments outlined here are only required after the components listed below are replaced in particular parts The following adjustments are required osea ADJUST MEASURING RF AGC
19. solder condition Approx 0 3 Vp p video signal present at PIN 8 of IC701 Fig 27 Check CF701 708 C709 R707 R709 Horizontal synchronizing signal present at PIN 13 of IC701 Fig 28 Check HSO output of IC801 Weakly rising waveform synchronized with horizontal synchronizing signal output at PIN 12 of IC701 Fig 29 Chroma signal present at PIN 19 of IC701 Fig 30 YES NO Check C710 R710 Check L700 C701 C702 R701 R702 3 58MHz signal present at PIN 2 of IC701 Fig 31 Check X701 C703 C704 C705 R704 R705 Check IC801 X801 TC801 0804 VD801 Check IC801 C805 R802 R804 adjust TC801 10 227MHz signal present at XTI terminal of IC801 PLL Lock signal present at TP802 Fig 22 YES a 20 8 Synchronizing signal present at GD terminal of IC801 YES 4 5 V approx 3 9 kHz clock present at Terminal DB of IC801 YES Check IC801 L801 C803 solder condition Check TP803 TP821 YES Chroma signal 701 PIN 26 30 4 0V Fig 31 64 5 55 Fig 29 sii N TOP 22 ELECTRIC PARTS LIST VIDEO PCB ASSEMBLY PCB 1 Assembly PCB 1 PCB Video dise Consists of the following 0 ITEM Qty Parts code Description IC801 1 A71 1130 F5032B3 CITIZEN IC701 1 A71 0710 M51403 MITSUBISHI L701
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