Service Manual
Contents
1. 402 O 45 O 50 D401 MTZJ7R5CTA RVD1SS133TA RVD1SS133TA C511 C601 D601 IC901 UPD78043A054 D602 ELIT 28 SA EX110 i Remarks Part Name amp Description HEADPHONES Part No Part Name amp Description Remarks Part No Part Name amp Description Remarks NEHMEN COMPONENT COMBINATION S950 EVO21405R EVO21405R TACK SWITCH S951 TACK SWITCH a Z o 952 EVQ21405R TACK SWITCH Z101 RLA2Z002M T AM ANT COIL HP601 HEADPHONES JACK 953 EVQ21405R TACK SWITCH Z102 RLI2Z006M T S954 EVO21405R EVO21405R EVQ21405R EVQ21405R EVQ21405R EVQ21405R EVQ21405R TACK SWITCH TACK SWITCH TACK SWITCH TACK SWITCH TACK SWITCH TACK SWITCH TACK SWITCH TACK SWITCH EARTH TERMINALS gt m m a ZS gt Dm RZV10V511CS ZNR CDSPS4242N REMOTE SENSOR ESE L ao CERAMIC FILTERS CF201 RLFFETMGDO1L CERAMIC FILTER CF202 RLFFETMGDO1L CERAMIC FILTER CF901 RVBCST4R00MT CERAMIC OSCILLATOR eras X101 RSXZ456KM07M CERAMIC OSCILLATOR X102 RLFDGTDO1I FM REZONATOR X103 SVO49U722T S CRYSTAL 7 2MHZ IL ESTA FL901 RSL0213 F FL rs XBAICSONBAL FUSE as FC701 EYF52BC FUSE HOLDER FC702 EYF52BC FUSE HOLDER ZT TT ga ME JK101 ANT TERMINAL LINE IN JACK LINE IN JACK LINE IN JACK SP TERMINAL SP TERMINAL AC INLET AC OUTLET ME Se T Je Wa maas RL601 RSY0013M 0 RELAY2. ERDS2TJ102T Dk ERDS2TJ104T 100K 1 4W M C196 m O CD 4 O R A an e R634 R906 C104 m O m gt CU R635 R907 ERDS2TJ104T C105 m O UJ 4 m o co N TI en 100K 1 4W M a ror M 1000P 50V M C125 EOBTIHISOJCS 15P 50V M Ci41 ECEA1HKA010B 1 50V M a C149 ECBTICIOSNS5 001 16V R636 ERDS2TJ102T R908 ERDS2TJ104T 100K 1 4W M C106 ERDS2TJ104T 100K 1 4W M ERDS2TJ102T IK 14W MJ R909 C107 m O m A D M UJ rm C w m o W m RA a m O O lt RY Mm e m M M M M M M M M M M M R910 C108 S R911 ERDS2TJ104T 100K 1 4W MJ C109 R912 apen us Wk W M cker fi m R922 ERDS2TJ472T K ERDS2TJ101T 100 mimi mi mi mimi m O OO OO OPO CO OO O oO loi wl ol ol OJ wo o 231 343 H an cal O ji T T O T T O m A gt el el bl Al o I ei G ol Sal o eli b i nj 8 8 8 3 8 8 8 5 al SI Silo ll RZ gg 110 4 C111 m O 22 O N no e U C112 O m O TO S e o rm O TD 2 O poza A w on C113 C114 Dec O O gt G C115 C414 m noj Mi mi mij m
3. 44 344 51813 M Troubleshooting SA EX110 This unit has test points on each circuit board block for use in troubleshooting CONNECTION Connect either a CD player tape deck or AF oscillator to the input terminals of the unit AF oscillator gt Tape Deck Connection equipment REQUIRED ITEMS 1 Testing with a CD player 2 Testing with a tape deck 3 Testing with a AF oscillator 4 Oscilloscope min 10MHz TEST PROCEDURE FOR AMPLIFIER CIRCUIT When the CD player AF oscillator is connected Power on the unit Set the input selector button of the unit to the CD postion Set the Speaker ON OFF button of the unit to the SPEAKERS ON position Run the CD player P Run the AF oscillator e 056C first program Oscillator output 1kHz OdB at 500Hz 200mV Using the Oscilloscope check the output waveforms at the test points on the circuit boards of the unit in the following order L1 R1 L3 R3 LA R4 gt L5 R5 gt L6 R6 Refer to page 8 TEST POINTS POSITIONS OF AMPLIFIER CIRCUIT MAIN P C B COMPONENT SIDE R1 C414 ve pin R5 C602 L5 C601 e e m om im e e e em ee cb e ep UE e e an a e AMT TAPE PLAY gt A Input Terminals of the unit Test deck SZZP1054C first progarm 1kHz OdB Test tape QZZCLA 315Hz OdB Set the output at 500Hz 200mV To measure the output waveform atthe test points When the tape deck is connected Po
4. RL602 RSY0013M 0 RELAY RL751 RSY0019M 0 12V TV 5 RELAY MA y gt TI S956 e lt O GH 2 co ce 957 co NE1004 2 EARTH TERMINAL NE1004 2 EARTH TERMINAL A 960 co 961 PACKING MATERIALS 5964 lt 980 EVQ21405R 1 PSD152 ACCESSORY BOX PACKING CASE U 3289 CONNECTORS 3 U m n I c c E CA m N0865 POLYFOAM MIRAMAT BAG PB1061 BAG LEELLLE p ELLE PFX0005 CN101 RJUO57W007 RJU057W007 RJU100W07 RJU100W04 7P CONNECTOR 7P CONNECTOR 7P CONNECTOR 4P CONNECTOR 6PINS STAPING CONNEC P5 CN102 CN501 CN502 ACCESSORIES CN701A RJS1A6606 1 REMOTE CONTROL M i CN751 SJS305 1 3P CONNECTOR A1 1 UR64EC1822 REM CON BATT COVER LOOP ANT UNIT AC CORD FM ANTENNA WIRE FKSEX110PK O l BOOK ASS Y FKSEX110PCK O l BOOK ASS Y CN901 RJU003K008M1 BOAD IN CONNECTOR 2 0 gt O o CN902 IRJU003K008M1 BOAD IN CONNECTOR 3 DG a CN903 IRJUO03K008M1 BOAD IN CONNECTOR BOAD IN CONNECTOR 7P CONNECTOR 7P CONNECTOR 7P CONNECTOR 4P CONNECTOR 8P CONNECTOR 8P CONNECTOR M 4 ili O e 04 IRJU003K008M1 5 amie Biz O Sin D 313 Q CP101 RJTO57W007 1 5 CP102 RJT057W007 1 CP501 RJT100W07 CP502 RJT100W04 CP901 RJT003K008M1 CP902 RJT003K008M1 CP903 RJT003K008M1 BP CONNECTOR NES Na S
5. XN I Crystal oscillator terminal 85 XOUT O 4MHz AN6558F M5218AP UPC4570C 7 e CO G Z O o 3 7 S6 S1 8 80 D1 D3 LA1832A LC7218 UPD78043A054 80P 2SC3311ARTA 2SA1534AORTA RVTDTC144YST 2SB1548POAU 1N5402BM21 2SC3940AQSTA RVTDTC143XST 2SD2374PQAU SB360L6508 Ca X Cathode A RVD1SS133TA MTZJ5R1BTA 1SR35200TB MA700ATA 1SS291TA Anode Cathode Cathode A DA MTZJ16CTA MTZJ4R7BTA MTZJ3R9ATA MTZJ6R2BTA Ca MTZJ6R8BTA 4a Cathode MTZJ7R5CTA A Anode 2SC2785FETA 2SC2787FL1TA 2SC2786MTA 2SC2787LTA 2SC3311AQSTA 2SD1915FTA 2SC1740SSTA MTZJ27DTA SA EX110 M Printed Circuit Board e VOLUME P C B REP2484A S PANEL P C B REP2484A S VOLUME L3 BALANCE Reste Bass 2 HEADPHONES JACK P C B OPERATION P C B REP2484A S REP2484A S mo e SA EX110 SENSOR REP1999B B P C TUNER PACK PE SA EX110 d Deszzdi4 d Veszedau g 2 d HANHOJSNVUL a o O 2 J lt pi gt pz DT ui uonaod siu u3no jou Op eseejd au afeyon OV A90HS 9IH193 13 40 MSIH NOLLAVO E 9 Li m AJHILIMS Z I 1311n0 IV S f ER a MO 1 o o ZHO9 d DEGSZZAIY d ve SZZdaH 9 D d AlddNS YAMOd EX TUNER P C B REP2254A T NM 42 SA EX11C 3 MAIN P C B REP2483A M eg SB PLAYBACK REC OUT IN SPEAKER B SPEAKER A SE L yr
6. lt 0V gt lt 4 9V gt lt 4 9V gt C196 25 K1000 ro oz C148 NO 01 a DD lt 3 9V gt X102 R124 HD ro BH MAIN CIRCUIT CP 101 PAGE 25 ro D MAIN CIRCUIT CP 102 PAGE 25 SA EX110 Q901 HP ono di RVTDTC114YST HP L Ei B RESET CONTROL a PRO lt u FL901 s NS RSLO213 F FL AC BEC A o MAI DOE OOO ge E A AAA a GO 662 oc ZA I E R B a M e ov Ca 8 C909 50V22 50V22 h P 5 C914 10V10 N C911 O D O CA O e D A D JOJ CA D O I ZER KR 0927 SE zi 7 a a O GE D LOL 924 K330P H nala oO D o A B IC O ojo D q lt o O o O ne A B C D E FIG SES A A AL A A Li A gt 2212 2 3l3 O A 2 m S 2 cN N N N Mp OIG O O gt IE off tp Ef dp HT l V VI vv v Vv vi v vi viv u 2 Ll ES ES a 21V a KPR o SEE EG 2 E E gt lt a lt 21V gt D D J n uU SOS A JA gt lo viz V m A IC901 IC901 UPD78043A054 i MICROCOMPUTER 1 l JN h3 u yo E C lt v ay O Z x os o Gah R ee S a 55 LJ gt Ge x C G E NE CET F G H 48 35 SS d 5 ti z 11 g soi LASE a 6 a m lt ZET dei a FO Z aa bios k lt 10 5V gt o e Q u Z H iur La a O u 2 x O o I Q0 x a a KO vlt E me gt SIW ADAPTOR lt 1 6V lt W O P X 5 o Y ac Z 789
7. ERDSZTJ332T ERDS2TJ332T 33K 1 4W M Ri41 ERDS2TJ103T M0K 14W M R452 ERDS2TJ224T 220K R142 JERDSZTJ103T 10K 1 4W M ERDS2TJ821T 820 1 4W M R143 ERDS2TJ222T ba 1 4W M ERDS2TJ821T 820 1 4W M ERDS2TJS63T 56K 1 4W M ERDS2TJ332T ERDS2TJS63T 56K 1 4W M ERDS2TJ102T ERDS2TJ102T ERDS2TJ824T ERDS2TJ332T 33K 1 4W M ERDS2TJ271T ERDS2TJ271T ERDS2TJ221T ERDS2TJ221T 56 56 R531 ERDS2TJ104T ERDS2TJ564T R453 R532 R5 R454 R533 ma ERDS2TJ391T 1390 ERDS2TJ272T R144 R534 R145 ERDS2TJ222T 22K 1 4W M ERDS2TJ102T ERDS2TJ102T R455 R7 27K WAW M IK 1 4W M R456 R543 ERDS2TJ684T R146 R457 270 R544 680K 1 4W M IK 1 4W M ERDS2TJ474T 470K 1 4W M ERDS2TJ474T 470K 1 4W M R149 ERDS2TJ680T ep 1 AW M R171 ERDS2TJ102T IK 1 4W M ERDS2TJ102T 1K ERDS2TJ471T ERDS2TJ102T IK 1 4W M ERDS2TJ391T ERDS2TJ102T 270 R545 68 14W M 68 14W M ERDS2TJ391T 390 1 4W M R10 ERDS2TJ391T 1390 1 4W M ERDS2TJ684T ERDS2TJ151T 147 R148 R458 R459 R546 20 11 680K 1 4W M R460 ERDS2TJ680T ERDS2TJ184T ERDS2TJ184T 180K ERDS2TJ123T 12K 1 4W MJ ERDS2TJ123T 12K 1 4W M ERDS2TJ563T 56K 1 4W M ERDS2TJ563T 56K 1 4W M ERDS2TJ102T IK WAW M ERDS2TJ102T 1K R601 R103 150 R461 180K R602 o R104 ERDS2TJ102T IK 1 4
8. N mark have special characteristics important for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used When replacing any of components be sure to use only manufacturer s specified parts shown in the parts list Caution IC LSI and VLSI are sensitive to static electricity Secondary trouble can be prevented by taking care during repair Cover the parts boxes made of plastics with aluminium foil Ground the soldering iron Do not touch the pins of IC LSI or VLSI with fingers directly Put a conductive mat on the work table FUSE CAUTION WA These symbols located near the fuse indicates that the fuse used is a fast operating type For continued protection against fire harzard replace with the same type fuse For fuse rating refer to the marking adjacent to the symbol CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH SAME TYPE F1 5 0A 125V FUSE A RISK OF FIRE REPLACE FUSE AS MARKED HE Ce symbole indique que le fusible utilis est rapide Pour une protection permanente n utiliser que des fusibles de m me type Ce dernier est indiqu la gu le present symbole estappos lt o SA EX110 A POWER SUPPLY CIRCUIT AXD751 D754 1SR35200TB A D755 RVD1SS133TA lt A ANS lt 0 14v gt Q751 E UN421FTA lt OV gt RELAY DRIVE W701 12V BP LN
9. OVOJ OGL O O oi mi ri o m gt gt gt IS 2 JEJE BEE R Z Z R 8 E 3 8 8 3 eloigejieleve zgzc mij rm m Za EN E 4 OF CH m Z s O S e e Lol W w wm R929 116 SIS R930 m O 2 A co AS CR mn Co ERDS2TJ101T 100 C117 m O UJ Y rm ce CO N TI Cc R946 ERDS2TJ103T 10K ERDS2TJ108T ERDS2TJ103T 10K 14W M 10K 1 4W M ERDS2TJ102T iK 1 W M ERDS2TJ122T 12K 14W M ERDS2TJ152T 15K 14W M ERDS2TJ182T 1 8K C118 m O O o UJ R685 R947 O 10K 119 m O gt O O CI R686 R948 C120 mu d M M M 7 M M M M ERDS2TJ103T 121 m O m 2 to R950 mi rm mij mi m O O ojo ri mij rmi mj TI gt gt gt D 2 T PIPIPISIS N D 2 IZI IA R lo el DI Dd o W O O O las orf a O D 103ZF5 3 1 R951 R952 R953 m O CD T O A CO Ji R954 ERDS2TJ222T 2 2K R955 ERDS2TJ332T 3 3K R956 ERDS2TJ472T 4 7K R957 ERDS2TJ682T ERDS2TJ102T ERDS2TJ122T ERDS2TJ152T 6 8K IK 1 4W M 1 2K R960 R962 1 5K to R963 ERDS2TJ182T R964 ERDS2TJ222T R980 ERDS2TJ102T 18K 14W M 22K 1
10. RELAY gt ND721 D724 1N5402BM21 B MAIN CIRCUIT ICN701 bla PAGE 26 _ GND A ACZ Ki Acs M c TRANSFORMER CIRCUIT D HEADPHONE OPERATION JACK CIRCUIT CIRCUIT O u O a o m E o d G PANEL CIRCUIT 9 CP501 PAGE 24 2 E 20 A RL751 ba O a QD JK792 AC OUTLET SWITCHED SA EX110 TUNER PACK CIRCUIT Q2 25C2786MKTA Q2 Q1 25K544F AC FM MIXER lt 9 8V gt RF AMP A lt 12 1V gt S9 AMA Bl es E LOV eo Ox des d 1 o e 03 04 K 25C2787LITA BUFFER AMP JK101 FM NA r B a ix Y D A R113 R176 L103 a 390 0 47uH R116 10K R128 1K 82 o N 99 5 e su na ai oz on ez poe rf P z nri Y E De 387 RB ji 5 o gt E o ae a O 28L Res vat 81 GES ox x BA B SE Gv gt O ke Ox 4 31 8 2 d o O M V V V V Q103 Q104 2SC2785FETA FM AM LOOP FILTER 12102 LC7218 PLL FREQUENCY SYNTHESIZER 21 gt SA EX110 2362787 a E 87LTA 22 S C105 Q106 FM IF AMP BSL gros TE KioooP EE UN411FTA QL T POWER SUPPLY CF201 C104 0101 FM ON ne K1000P Ii ONE Lov 2 P ke op ns ze NS Q106 av 2 Ls CR ne 59 2 st Li sl 58 lt lt 2 7V gt B R175 1C101 1 LA1832A FM AM IF AMP DET AM OSC MIX FM MPX gt R a A x e l 5 val 25 D GET GS T 52T G x 3 3K Q107 Q108 2SC3311ARTA BUFFER AMP
11. REPLACEMENT PARTS LIST cocinada is 28 29 TERMINAL FUNCTION OF ICS a 9 RESISTORS amp GAPAGITORS currada iii 30 32 TERMINAL GUIDE OF ICs TRANSISTORS AND DIODES 9 PACKAGING res sika e nias 32 PRINTED CIRCUIT BOARD ai slk id dai 10 13 ES Safety Precautions This Safety Precaution is applied only i in U S A After servicing be sure to restore the lead dress insulation barriers insulation papers shields etc Before returning the serviced eguipment to the customer be sure to make the following insulation resistance test to prevent the customer from being exposed to a shock hazard 1 Before servicing unplug the power cord to prevent an electric shock 2 When replacing parts use only manufacturer s recommended components for safety m A Antenna 3 Check the condition of the power cord Replace H wear or damage is evident terminal 4 5 Exposed metal part e Insulation Resistance Test 1 Unplug the power cord and short the two prongs of the plug with a jumper wire 2 Turn on the power switch 3 Measure the resistance value with ohmmeter between the jumper AC plug and each exposed metal cabinet part euch as screwheads antenna control shafts handle brackets etc Equipment with antenna _ terminals should read between 3MQ and 5 2MQ to all exposed parts Fig 1 Equipment without GE antenna terminals should read approximately infinity to all exposed parts Fig 2 part Note Some exposed par
12. ai E 5 6 SE O D rem S a 5 M38B53M4050F WE 8 MICROCEMPUTER F x a A O CI I Y lt a a ma q O E F Y Z A Lo S S l 1 x A y J a Li Z LJ LI Ll Li Le A WY Y Y 10 ICS11 UPC4570C TONE AMP TREBLE AF W THERMAL Y OVERLOAD gt SS O 39 AF MUTE 46 16 11 zB s T I NM NET z Gen M ES 26 A RL601 CBD E x o O FB O Q601 IC601 RSN3305 P POWER AMP s m I a Y Q901Q902 CF901 RESET C4MHZ CONTROL i lt SI XIN gt gt HOLD xpur JU SPA gt RESET IC901 UPD78043A054 MICRUCOMPUTER HELP LED Z891 REMOTE SENSOR nd SA EX110 mb D LCH re gt Y FRONT SPEAKERS A EEN m RELAY Ss SWITCH Eer po FRONT SPEAKERS B RCH s c sP Q SA EX110 Ee on N RCH p 0681 0682 MUTING SWITCH B lt BO j 0701 703 705 c B REGULATOR ED REGULATOR 0707 lt REGULATOR Q709 EBD lt REGULATOR 0752 Da 0751 RELAY DRIVE A 22 21 57 Q O gt lt m J I l a m CI Li LJ D e gt gt D IC901 a M38B53M4050F MICROCOMPUTER z y LJ A z o v Y e A A A 0 O C C coer e 25 28 78 80 1 7 61 70 72 77 e O O E KEY MATRIX CU am FL DISPLAY 10 d SIGNAL FM DSC SIGNAL AM SIGNAL AM DSC SIGNAL MAIN SIGNAL D701 D704 g D721 D7
13. 0209 U S A Fax 706 786 4387 Phone 706 787 3800 Australia New Zealand amp South Pacific Stanley Proto Industrial Tools P O Box 10 400 Whitehorse Road Nunrweding 3131 Victoria Australia Fax 61 3 894 1173 Phone 61 3 878 9244 Kong Malaysia China Stanley Proto Asia Pacific 12 Gul Drive Singapore 2262 Fax 65 861 3206 Phone 65 862 0883 Thailand Stanley Proto Thailand Ltd 1017 Moo 13 Bangkaew Amphur Bangplee Samutprakarn Thailand Fax 66 2 316 6071 Phone 66 2 316 8655 EM HE use in the application above Screw Tuner P C B About 14cm A long straight screwdriver cannot be used Fig 3 Japan Stanley Works Japan 2 7 16 Hyakunin Cho Shinjuku ku Tokyo 160 Japan Fax 81 3 3360 8456 Phone 81 3 3360 8458 Mexico Herramientas Stanley S A DE C V Apartado Postal 675 72030 Puebla Pue Maxico Fax 52 22 494 4880 Phone 52 22 495 300 South 8 Central America Puerto Rico The Caribbian Stanley Inter America 2101 N W 84th Ave Miami Florida 33122 Fax 305 594 4261 Phone 305 591 3828 Europe Stanley Proto Europe Woodside Sheffield 539PD England Fax Phone 44 742 768 888 44 742 739 038 Canada Stanley Proto Canada 1100 Corporate Drive Burlington Ontorio Canada L7L 5R6 Fax 416 335 0075 Phone 416 335 0075 Middel East Mediterranean 8 Africa Stanley MEMA Cory House The Ring Bracknell Berkshire RG 12 1A2 England Fax 44 344 485 526 Phone
14. 1 RCDSPS4242N REMOTE SENSOR poo 2SA933SSTA 1SS291TA HOLD FAA lt mo E lt WO r s x N A D ga BE gi 2 C931 st EI K100P SNA Ste W ko CP903 74 KAS ET1CP904 s n0 0 9 0 0 0 0 0 m OG SORT RER 0 20 0 0 a gt lt oo e gt 331 5 S15 z e a B ES 3i 5 5 alz 2 Ow LJ uki 7 x 2 d O O 5 a 5 E Z4 W gt mi zl E u Lei uf o a m pwa WZ E zi uj E lt A V a EE e d M 1 POS et E I N PEL Y TO D TO MAIN CIRCUIT TO MAIN CIRCUIT CN903 MAIN CIRCUIT CN902 PAGE 25 CN904 PAGE 26 PAGE 28 S SA EX110 LON VOLUME CIRCUIT AAA 9 ih oN umpe gou R501 2 2K a D 6 Ki Ll MI N o Plo R Si rl ul vlwi x vi zi a SH vee e Ee SRM sa A he I PZ E Ill E ER o e Can Eu BA6218 zr JST gt M p MOTOR DRIVER C505 MO 1 B3 085 q h 5 E a 2 2 gt 5948 j ns gt i p MUTING 85 gt A Ow Oa BE CH Be 3989 queno TI SPEAKER brda C520 o S947 O R4 1094 7 R3 PHONO geg Sal R516 C516 B ge eS E O TUNER Ny dwan S ox d m Qe R518 R512 C512 Y S961 Xo S954 Ve o 10V4 7 Que 2 K 470 50V3 3 QN CD SAUS MEMORY ON NA g Bi EN Dom ac T VR502 De S962 W OO d Qo lt NA Q ZTAPE MONITOR or ses SEE Ga Vo L O Yen Oye S956 Ia Go a 3 SNSCH DOWN 4s Y D a Ex A DI LO r ge SA e SE a 2 Ex S964 Pe 5957 No Be SPA a PAS VCR VCR1 PRS CH UP Bs BS TEN E SE O WN
15. 13 SA EX110 x M Wiring Connection Diagram rCAPER re wi UN EDI PHONO ES tuner P C B aaga o po Ii Do DG 518 El TUNER S PACK i P C B NACI JE CN701A CN701B i 5 Dua PCB CN901 CN902 CN903 CN904 EN K VOLUME OPERATION P C B P C B EJ PANEL P C B 2 CP901 CP902 CP903 CP904 ESEJ NOTE ALL P C B ARE ON THE DIHEADPHONE JACK P C B COMPONENT SIDE A SA EX110 M Block Diagram EM ANT Q107 lt Q108 BUFFER AMP Q103 Q104 FM AM LOOP FILTER X101 LJ 456kHz AM FM IF F m LEVE 5 E F IF M IC101 LA1832A FM AM IF AMP DET AM USC MIX FM MPX X103 7 2MHZ 0 U 12 BIT PROGRAMMABLE DO 5 UNIVERSAL COUNTER Q106 POWER SUPPLY CONTROL LC7218 gt PLL FREQUENCY 27 ER SYNTHESIZER B SA EX110 Cn mye GER EBD GBD IC451 Ll ea AN6S58F I P gt pese SI I PHONO L EG AMP no 25 EE 5 TAPE 2 24 REC DUT Lee i L 4 p C23 yo MO HO VOR E DUT di 8 IC402 O UPC4570C TAPE V ea GAMA B u F F E R Zo PLAYBACK s AMP 6 11018 x us VRSO01 1 25 VOLUME LEVEL SHIFT ih 14 VR502 BALANCE IC401 TC9163N INPUT SELECTOR u uf w Ge ICS01 BA6218 MOTOR DRIVER 5 6 z Paz DIRECTION gt M qp pee Ee VOLUME MOTOR 9 Eo ke 14 OLD Q Y an Q D a 6 42 a
16. 24 dej MAIN POWER TRANSFORMER ma SUB POWER TRANSFORMER M Schematic Diagram All schematic diagrams may be modified at any time with the development of new technology Note SA EX110 lt for Power supply circuit Transformer circuit Headphone Jack circuit and Operation circuit gt e 5946 Power switch e S950 FM Auto Mono switch e 951 Band select switch e 5952 Tuning decrease switch e S953 Tuning increase switch lt for Panel circuit and Volume circuit gt e S947 Phono select switch e 948 Muting switch e S954 Memory manual auto switch e S956 Preset decrease switch e S957 Preset increase switch e S960 Tuner select switch e S961 CD select switch e S962 Tape select switch e S964 VCR select switch e S980 Speakers A B off switch VR501 1 VR501 2 e VR502 e VR511 1 VR511 2 VR512 1 VR512 2 Volume control Balance control Bass control Treble control e Signal line B line map wash Main signalline gt gt FMsignal line MC gt AM signal line AM OSC signal line FMOSC signal line eThe voltage value and waveforms are the reference voltage of this unitmeasured by DC electronic voltmeter high impedance and oscilloscope on the basis of chassis Accordingly there may arise some errorin voltage values and waveforms depending upon the internal impedance of the tester orthe measuring unit elmportance safety notice Components identified by
17. 4W M 1K 1 4W M g EJE 3 Z gt gt o O O O Ric H lt BE CAPACITORS 1 ECBT1H5ReKC5 156P 50V RCBS1H102KBY C2 B 1000P 50V M 4 145 C3 C4 ECBT1H181KB5 C5 ECBTIHSR6KC5 5 6P 50V M ECBT1H3R3KC5 ECBT1H2R2KC5 22P 50V M HH M M M M 3P M 3P M M 180P 50V M C14 E O C6 33P 50V C7 ECBT1H4R7KC5 47P 50V M ls eermeewcs ja sv u oa jeosrioranss Jem 1 M zaj s HH 173 ECEA1CKA2208 22 16V M ECEA1CKA100B i0 16V M ECBT1C103NS5 001 16V M O BE 9 C174 C175 C520 SA EX110 x C521 EGEA1VKA4R7B 47 10V M C522 ECEAIVKA4R7B 47 10V M C523 JECFRIE128KR 0012 25V M C524 EGFRIE123KR 0012 25V C525 ECOV1H683JZ3 0 068 50V C526 EGOVIH683JZ3 0 068 50V Values amp Remarks Part No Values amp Remarks C609 ECBTIHISIKBS 150P 50V M 001 25V M NA bus ens s ww mr anos o aw W C705 ECEA1HUZ22E Also SV M C904 ECAOJMTOZB A 1000 6 C706 ECEATHU222E Alan 50V M c906 ECEAQKAT0B 100 63V M C707 ECAIVM101B 100 10v MJ C908 ECBT1EtOSZFS oot 25V M C708 ECKR1H1032F5 0 01 em M c909 ECEAIHKA220B 22 50V M C910 ECEA1HKA220B ECEA1HKA220B 22 50V M ECEA1H
18. 8dB CD VCR TV TAPE Input sensitivity PHONO 0 4mV 3mV IHF 66 CD VCR TV TAPE 27mV 200mV IHF 66 10Hz 70kHz 3dB S N IHF A PHONO 70dB 78dB IHF 66 CD VCR TV TAPE 75dB 83dB IHF 66 Input impedance PHONO 47kQ CD VCR TV TAPE 22kQ Tone control BRASS 50Hz 10 to 10dB TREBLE 20kHz 10 to 10dB M General Power consumption 155W standby condition 2W Power supply Dimensions W xHxD AC 120V 60Hz 430 x 136 x 309mm 16 V x 5177 x 18 Weight 6 4 kg 14 1 Ib SA EX110 x A 4 WARNING This service Information is sions for experienced repair technicians only and is not designed for use by the ener public It dose not contain warnings or cautionsto advise non technical individuals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attemptto service or repair the productor pracu ucts dealt with in this service information by anyone else could result in serious injury or death E Contents Page Page SAFETY PRECAUTIONS Sucia 2 WIRING CONNECTION DIAGRAM ens 14 BEFORE REPAIR AND ADJUSTMENT 2sssssaasssssss2 2 BLOCK DIAGRAM anja oe KT RE 15 18 PROTECTION CIRCUITRY casara Sn 2 SCHEMATIC DIAGRAM u u uu ed 19 26 OPERATION CHECKS 8 MAIN COMPONENT REPLACEMENT 3 6 CABINET PARTS LOCATION 27 TROUBLESHOOTING casona ad us see eee Ga ik 7 8
19. EENEN JL COSA TRANSFORMERS NS CUN MEME n mammary franc 2 RLQZPR47KT Y M L101 ELESN1R5MA 103 ELEXTR47MA9 501 RLQZP1ROKT Y LOA quomm RLQYR73MW E CHOKE COIL L751 ELESN101KA L901 RLQB101KTA Y CHOKE COL Iw RTP1N5C015 X TRANSFORMER IMA RTP1H5C001 V TRANSFORMER ki TL r L502 601 L602 sal gt d 1751 29 SA EX110 M Resistors 8 Capacitors Notes Important safety notice Components identified by A mark have special characteristics important for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used When replacing any of components be sure to use only manufacturer s specified parts shown in the parts list Capacitor values are in microfarad uF unless specified otherwise P Pico farads pF F Farads F ERDS2TJ122T 12K 1 4W M Resistors values are in ohms unless specified otherwise 1k 1 000 OHM 1M 1 00OK OHM ERDS2TJ122T 12K 1 4W M ERDS2TJ273T 1 4W M RESISTORS R136 ERDS2TJ102T IK 1 4W M bau ERDS2TJ473T 47K 1 4W M ERDS2TJ104T ok ERDS2TJ273T 27K 1 4W M efNo Part No R527 R528 100K 1 4W M 100K 14W M 220 WAW M 100K 1 4W M 560K 1 4W M H529 R530 R2 ERDS2TJ104T 220K 1 4W MJ R3 ERDS2TJ221T ERDS2TJ332T R4
20. KA220B 22 50V M ECEA1VKA100B 10 10V M ECEA1VKA100B ECEA1HKA010B 22 50V M C911 C912 C913 C914 10 10V M 1 50V M C916 C919 ECBT1H101KB5 100P 50V M C920 ECEA1HKA010B i 50V M Can ECBT1H331KB5 330P 50V M C922 ECBTIH331KB5 330P 50V M A A O M M M C527 ECBT1C562KR5 5600P 16V M C528 ECBT1C562KR5 eg 16V M M M M C529 ECOBIH273JF3 Ion 50V M C530 ECQB1H273JF3 0 027 50V C531 ECBT1E103ZF5 1 25V C532 ECBT1E103ZF5 1 25V N 1 C925 ECBT1H331KB5 330P 50V M C926 ECBTIH331KB5 330P 50V M C927 ECBTIH331KB5 Leg 50V M M M gt 0 0 C533 16V C534 16V C603 JECBTIHS61KB5 560P 50V M C604 ECBTIH561KBS 560P 50V M C607 ECCR1H100K5 10P 50V M ll Packaging ACCESSORIES a 1 1 0 0 01 25V M 50V M 50V M 0 0 0 2 C928 ECBTIH33IKB5 330P 50V C929 ECBTIH331KB5 330P 50V C930 ECBTIHa31KB5 330P 50V C934 ECBTIHIOIKB5S 100P 50V M C938 ECBTIHI01KB5 tooP 50V C944 ECBTIHI01KB5 100P 50V M C950 ECBTIHIOIKB5S 100P 50V M HW o w ka E E 2 33 33 m lt Kal A Z pre SSS SS 2 A1 EUR644346 REMOTE CONTROL UNIT A2 RSA0010 AM LOOP ANT P1 SPSD152 A3 SJA172 ACCORD A4 RSA0006 FM ANT A5 RFKSEX110PK P INSTRUCTION M
21. NL ASS Y A5 RFKSEX110PCK PC INSTRUCTION MAL ASS Y L J ARE P3 C gt 2 P4 SX RPFX0005 gt 4 P3 D P3 A P3 A P3 RPNO865 P3 B P3 C P3 D P2 RPG3289 P3 B S Printed in Singapore G970403400 J T L 32
22. Q706 lt 5 8v gt SDV od ISA O D708 Oc MTZJ6R2BTA ro E PANEL CIRCUIT ee PAGE 23 AND712 MTZJ16CTA REGULATOR AN 0707 AN 0709 zT AN Q703 Q704 Q705 25B1548PQAU 2SA1554AQRTA 2SC1740SSTA REGULATOR REGULATOR STABILIZER CAF WWW 0 0 0 0 0 0 0 0 e gt gt EI alt Xi ml Oj a e S Y ai G pral lech ak e e El ol Slo gig o T ne ol Hi ALE JE lt oL TO PANEL CIRCUIT PANEL CIRCUIT CP902 Wa PAGE 23 PAGE 23 OB SA EX11 Ion B Cabinet Parts Locat ei o a a ul z amp O u z z lt e E MAIN P C B W701 POWER SUPPLY P C B OPERATION C B HEADPHONE JACK P C B SA EX110 M Replacement Parts List Important safety notice Components identified by A mark have special characteristics important for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used When replacing any of components be sure to use only manufacturer s specified parts shown in the parts list The parenthesized in the Remarks columns specify the areas Refer to the cover page for area Parts without these indication can be used for all areas M in Remarks column indicates parts that are supplied by MESA Remote Control Unit Supply period for three years from terminal of production The SF mark denotes the standard part Remarks R
23. Service M AV Control Stereo Receiver ORDER NO MD9704035C1 A2 anual Receiver SA EX110 Colour M Specifications M FM Tuner Section Frequency range 87 9 107 9MHz Sensitivity 11 2dBi 2uV IHF 58 50dB quieting Sensitivity MONO 18 3dBf 4 5uV IHF 58 STEREO 38 3dBf 45uV IHF 58 Total harmonic distortion MONO 0 2 STEREO 0 3 S N MONO 75dB STEREO 70dB Frequency response 20Hz 15 kHz 1dB 2dB Alternate channel selectivity 65dB Capture ratio 1dB Image rejection at 98MHz 44dB IF rejection at 98MHz 80dB Spurious response rejection at 98MHz 75dB AM suppression 50dB Stereo separation 1 kHz 40dB 10kHz 30dB Carrier leak 19kHz 35dB 38kHz 50dB Antenna terminal s 759 unbalanced E AM Tuner Section Frequency range 530 1710kHz Sensitivty 20uV 330uV m Selectivity 55dB Image rejection at 1000kHz 40 dB IF rejection at 1000kHz 60dB HM Amplifier Section Rated minimum sine wave RMS power output 40 Hz 20 kHz both channels driven 0 8 total hamonic distortion 1 kHz continuous power output both channels driven 0 8 total hamonic distortion Total harmonic distortion 100W per channel 82 103W per channel 80 Rate power at 40 Hz 20kHz 0 8 80 Half power at 1 kHz 0 07 80 Dynamic headroom 2dB 80 SMPTE intermodulation distortion 0 3 80 Low freguency damping factor 30 80 Low impedance 80 Freguency response PHONO RIAA standard curve 0
24. TB DOE MA 6 29C17408STA TRANSISTOR M D754 1SR352007B MA 3 SCREW CABINET D755 AVDISS139TA IMA 8 XTBS3 8JFZ1 XTB3 20JFZ XTB3 8FFZ SCREW SCREW SCREW SCREW SCREW SCREW SCREW FRONT 2SC3311AQSTA TRANSISTOR M 2SC3940AQSTA TRANSISTOR M 2SB1548PQAU TRANSISTOR 2SA1534AGRTA TRANSISTOR RVTDTC143XST TRANSISTOR 2SC3940AQSTA TRANSISTOR RVTDTC114YST TRANSISTOR 2SA933SSTA TRANSISTOR MTZJ6RBBTA alen ex m Turovas pix De besat pe D923 RVD1SS133TA schen es HE VARIABLE RESISTORS ege 02 EVJ02QF01G15 511 EVJYATFOICIS VR512 EVJYAIFOICIS SWITCHES S946 EVQ21405R TACK SWITCH S947 EVO21405R TACK SWITCH S948 EVO21405R TACK SWITCH Me TT x D gt gt JABE o S s O D DIS a gt PIS lait Kia Ile o UA lt A A TRANSISTOR MA A A 0 0707 1 Q709 OO N w Om gt gt HBHHHD S 2 Q751 E gt 5 0752 Q901 Q902 3 4 INTEGRATED CIRCUITS IC101 IF MPX IC PLL IC SELECTOR IC BUFFER AMP OP AMP IC MOTOR DRIVER IC TONE CONTROL IC HIC M MICROCOMPUTER JU D aja lt JO SVC211SPA AL DIODE 2 SVC211SPA AL DIODE 3 SVC211SPA AL DIODE 101 MTZJBRIBTA DIODE 102 RVD1SS133TA DIODE DIODE DIODE DIODE 10 no JU E CO gt r a U gt z O O Z O m m ND W w fa N fa fa ja fr gt o j Rz o je je gt so jo m io m o gt D O 401 ig
25. V2 2 ONITOR ANN TAPE ya S De ox d 25 L cH O 20 Bo a TEN o e 788 e p Te o Jr m Lao Ox yy L PLAYBACK o WO ZE to L R CHIO Ox A R602 C602 se Or E 220 50V2 2 tO gt V AAA SEF d a ox R411 1K O25 y 22 e CH ol G R486 xja Ov E OUT Le ALA sz VCR R413 1K r L CH O NAN IN A gt lt Lp HG W u Y 28 Da 25 o gt I GND joj 1 14V 2 mi D b O A TO 14V e Aert us e Q752 TUNER do 0 x 22 6 BV lt 6 6V gt ne lt OV gt ES lt 15 6V gt RIN b LIN K 19 BB ron LL p TUNER IC402 ne CK a DR 6 x de o M5218AP 52 pe PAGE 22 CH 6 BUFFER AM GG DATAI Ll a lt Q dc E gt U LA 9a g SI lt A ei 2 D I ulj Z E Mn l ol gt 4 Na MANA 2 PANEL CIRCUIT GER PAGE 23 SA EX110 CN ses Dos gt Ero 8 Ba SE JK601 a DI SENSE co VCC LOW LCH 7 2 5 5 9 A O st e V 5 SO RCH J o NE 2 V O o on FRONT 2 SPEAKERS JK602 LCH 7 B ou R608 56K gt O N W tr 9 RELAY A D701 D704 o A IN5402BM21 BE S 12V DOES PER EUN San ass o aaa WE EJ A t AUD RZ enn M mas sss SCH KE m e 8 ii AC4 U o A e BA TO dus AB a 0604 400 Y 2SA933SSTA AC6 POWER SUPPLY E lt 1 4V gt RELAY DRIVE CIRCUIT m gt SND KO O GND Ke 0701 25D2374PQAU m T TTT SE L
26. W M ERDS2TJ471T 470 1 4W M ERDS2TJ224T 220K 1 4W M ERDS2TJ471T 470 ERDS2TJ102T R172 R173 R462 R603 ERDS2TJ680T 0 0 ERDS2TJ563T ERDS2TJ563T K K R105 470 R463 R604 E E R106 R175 R605 E E SIS R464 ERDS2TJ182T ERDS2TJ182T ERDS2TJ563T ERDS2TJ563T ERDS2TJ100T ERDS2TJ100T 107 176 390 1 AW M IK 1 4W M 1K R465 R606 110 1K 1 4W M R466 R607 d Z R112 ERDS2TJ104T 113 ERDS2TJ103T 10K 1 4W M R114 ERDS2TJ562T 56K 1 R115 ERDS2TJ561T 1 100K H402 JERDS2TJ102T ERDS2TJ102T 1K ERDS2TJ102T ERDS2TJ102T 1K ERDS2TJ102T IK 1 4W M ERDS2TJ102T 1K ERDS2TJ102T R467 R608 R609 R405 R468 O co R406 R407 1K R501 ERDS2TJ222T ERDS2TJ222T ERDS2TJ103T 2 2K R610 2 2K 10K R502 611 560 1 4W MJ ERDSIFVJ100T A 10 1 2W M R612 ERDS1FVJ100T Au 1 2W M ERDSZTJ102T K 14W M ERDSZTJ102T IK 1 4W M 7 6 lt IK 1 4W M R503 HE gt 117 ERDS2TJ104T 100K gt R504 ERDS2TJ103T ERDS1FVJ2R2T A 10K R613 118 56K 14W M R412 1K R508 22 R614 S EIE IXE XE Z s R119 82K WAW MJ R413 ERDS2TJ102T 1K 14W M R511 ERDS2TJ471T 470 1 4W M R615 180K 1 4
27. W M H120 47K 1 W M R414 ERDS2TJ102T 1K R512 ERDS2TJ471T 470 1 4W M R616 150K 1 4W M DO ir m jm m rn m sell IDE W 0 U CI IC II CC s Beef sel D C ZIEJISJSJSJEJEJE S SE Pall E A FN PDP FO 2 PO co SIIRI E ia RIRE R Aja aja a jaj mi m mi tna m m RS ffe al ff T el D O O O OlO OH nin ol ol O AEIEJTEJEJE elels s S s Slela EE gt 4 2 5 3 R126 m U R ci A S 4 7K 14W M R623 m D O LO M c lt O R A 680K 150K R415 JERDS2TJ102T Jm 14W MI 470K 1 4W MJ R619 EKI ATK VW IM R419 ERDS2TJ104T 100K 1 4W M pen ERDSZTJ272T 27K 14W M 10K ua M Razo ERDS2TJ104T 100K 14W M Asia JERDSeTJ272T ba waw M R624 R128 82 14W M R42i JERDS2TJI04T HOOK waw IMJ R5i9 ERDS2TJss2T 39K 1 4W M R625 R129 47K wat MJ R422 ERDS TJi04T iook 14W IMJ R520 ERDS2TJss2T ack AW myl Reze WAW M 130 K K 10K R423 ERDS2TJ102T 1 1 4W M R424 ERDS2TJ102T 1 1 4W M R425 ERDS2TJ103T 1 1 4W M ZK YAN M d OK OK 2 R522 22K 1 4W M 39K 1 4W M R627 wu wesch ea mb E 131 R628 JW D W 132 R629 1 4W M 1 4W M 1 4W M 1W IM W M R523 1W M 1W IM 18 22 47K 100 100 100 100 22K m M mi mij mij m
28. e Main P C B Lead Wire Panel P C B Tuner P C B and the Power P C B as shown on the left gt Fix back the front panel and connect the four connector CN901 to CN904 Connect back the transformer to the power P C B and connect a lead wire from the main P C B ground to the transformer ground plate me 0 0 Panel P C B XTBS3 8JFZ1 Black Transformer Power P C B SA EX110 ll Replacement of Power IC and Regulator Transistor Locate the nipper to the thin portion of the joint Nipper Z Cut the joint Bottom cover 2 After cutting the joints 6 portions bend the portions of the bottom chassis ass y in the direction of arrow with pliers 1 Cut the joints 6 portions between bottom cover and bottom chassis ass y with nipper u Unsolder the terminals of power IC or regulator transistor CAUTION a e After replacing the power IC or regulator transistor apply a sufficient quantity of compound grease RFKX0002 between the heat sink and the power IC or regulator transistor Radiation of power IC amp transistor e Tighten enough the screws after replacing the power IC or regulator transistor Otherwise the heat radiation works little Offset screwdriver Transistor a A SR P KM 3 When replacing the power IC or regulator transistor unsolder the terminals of power IC or regulator transistor on the soldered surface Reg
29. ef No Part No Remarks mu fee B360L6508 M B360L6508 ECH 1N5402BM21 Part No Remarks Ref No Part Name amp Description Part No Part Name Description Part Name amp Description D603 CABINET AND CHASSIS TRANSISTORS LO D605 D606 D701 O a 1 Q2 SK544F AC TRANSISTOR SC2786MTA TRANSISTOR KM0260C K GR0178J A REAR PANEL CABINET ao jo ro N A S KAENI gt gt e pn RGR0178J B REAR PANEL o 2SC2787FLITA TRANSISTOR D702 1N54028M21 DIODE VOLUME KNOB ou 2SC2787FLITA TRANSISTOR D703 PCB HOLDER TRANSISTOR D704 MA TRANSISTOR HOLDER TRANSISTOR D707 MA BOTTOM CHASSIS ASS Y TRANSISTOR D708 IM N 71 RKA0079 A FOOT 2SC3311ARTA TRANSISTOR D710 wem DIODE MA 108 2SC3311ARTA TRANSISTOR 2SD1915FTA TRANSISTOR 2SDI915FTA TRANSISTOR TRANSISTOR TRANSISTOR RMNO372 SNE2123 FL HOLDER EARTH TERMINAL HEAT SINK UNIT SELECTOR BUTTON MODE BUTTON one Jurze ES ora Deene ox l ra neee bes mp rs eene Jet ora sone be hu 5 Ir T 0 RXX0169 Q506 RGU1349 K RGU1350 K 2SA933SSTA 2SA933SSTA Q602 no D D O O gt o O Ja lt on 3 RGW0244 K1 BASS TREBLE KNOB Q681 2SDI915FTA TRANSISTOR D751 1SR3520078 DIODE 4 RHN90001 M9 NUT Q682 TRANSISTOR D752 1SR35200TB s ascoo27 1 SHIELD CASE 0701 2SD2374POAU TRANSISTOR M D753 1SR35200
30. i m gt ill n deci UJ DA Die O O O O O O O O lololo o 8 8 8 TI SZ ZIS N Fo O lo lo a gt mimim m 2S RIZ 2 Ale R133 IK 14W M 1 R524 39K 14W M R630 R134 IK 1 4 M R427 ERDS2TJ103T 1 1 4W M R525 22K va M R631 1 4W M R135 R526 mimimim im m m m m zoom pum lolo lol B SO Fro EO POLE 10 16 bo 5 IS IS fG f fG Ro G FG ext le le le Raf Faza ctl me a a a pli 5 o S IS S 818 S S als 4141171117 m mim ra rno ffe e fl DU O C CO Iv JOJO 8EJBIEIE aad Dal A NR MB w N SISISISIS ZEE R440 ERDS1FVJ820T AN 8 12W M 30 IK 14W M 22K 1 4W MJ m A ro 4 lt m ro GH A R632 22K x SA EX11 WU amp Remarks Face EN 7 0 0 Ref No Part No Values amp Remarks 4 Part No ef No Part No Ref No Z a 8 go m i e Values amp Remarks 001 16V M 1000P 50V M 10K 1 4W M 10K 1 4W M IK 1 4W M IK 1 4W M R637 ERDS2TJ472T 47K 14W M R639 ERDS2TJ474T 470K 1 4W M R682 ERDS2T4270T 27 1 4W M R684 ERDS2TJ270T 27 1 4W M ERDS2TJ270T 27 1 4W M ERDS2TJ270T 27 14W M R687 ERDS2TJ270T 27 1 4W M R717 ERDS2TJ752T 75K 1 4W M ars tere Java M R719 ERDSIFVJ220T AN 22 1 2W M CES Le vam M R633 ERDS2TJ103T ERDS2TJ103T ERDS2TJ102T R901 C103
31. ro ra TO Wo ASA 25 OS o L4 R511 C511 470 50V3 3 HN O 5 NE diam b MI x2C521_ R517 88 DA OZ 10V4 7 27K 10511 gt a LOs UPC4570C RM no ZE TONE AMP R683 R685 R687 a km B SE L 27 27 21 ON o ES se 1 86T 18 Q681 lt w 8 m AN lt 14V5 Dr D Sa Du Za EO 5 ON Cm c me EST y SE R699 R695 NL m RE C SKI IK ovs 58 N a a 73 e o ga OK 2 2x am ENT 0681 0682 Z Q682 GR One an 25D1915FTA ta 6685 2598 OV EN SO o 120 01 w om MUTING O 1K 7 ATW k o s o E Qn lt 14V gt E lt 0V n j O R682 R684 R686 R688 ON 37 27 27 OF SEN DA VR501 MOT VOLUME Q y x 8 xX S perdi O L3 CP501 yee GND 8 HP_GNO pz TU SW gt TO Ge HEADPHONE 3 GND CIRCUIT ja CN501 PAGE 20 h n SA EX110 a MAIN CIRCUIT ANic601 RSN3305 P POWER AMP IC451 O o AN6558F 2 S we PHONO EQ AMP SO gt mo dogo Je 7 O 39 Z gt Z Z Z me D O lt 220K ma Jani m mm Dan Sami Zeg Car m L CHICO gt f z Iq A amp E L R CH me C610 C609 V o v si e k dm K150P K150P Tet aos CS AL CHILO MN DE WO zz NES A B D G imu os g e tN Qo Qu L R CH G MO L WO SIX a M E401 ES R458 O cx L E 1290 pJas WE C458 O 10V33 c u ox O ac DO O l V Die a O x L cH O O20 Qo 9 Ke 9 D co p REC OUT o SO R601 C601 M R CHICO 220 50
32. rst turned off and then on again SA EX110 M Operation Checks and Main Component Replacement Procedures ATTENTION SERVICER Some chassis components may have sharpe edges Be careful when disassembling and serving 1 This section describes procedures for ARCANO the operation of the major printed circuit boards and replacing the main components 2 For reassembly after operation checks or replacement reverse the respective procedures Special reassembly procedures are described only when required 3 Select items from the following index when checks or replacement are required e Contents e Checking Procedure for Major P C B ss Replacement of Power IC and Regulator Transistor dog e eiu i sob A IE d aa ll Checking Procedure for Major P C B Remove the Topcabinet ESA o o Or SNE2129 1 XTBS3 8JFZ1 Black Black D 6 O gt DEE prres errz Black Black SA EX110 Front Claw Back Claw Front Panel x4 Back Panel Stepe Ox W Front Claw Front Claw CN903 Front Claw CN902 CN901 CN904 Back Claw Bottom Chassis Release the two front claws and pull out the front panel as shown above Take note of the connectors as you remove the front panel CN901 to CN904 Heat Sink ESTE Release the two back claws and the Main P C B hooks of the heak sink Slide out the bottom chassis from the main P C B and the back panel Tuner P C B Main P C B Front Panel Check th
33. tions Of ICs 1C901 UPD78043A054 System Microprocessor Pin wen yo Function 1 7 D4 Dio JO Digitsi i VDD T Power supply terminal SUR OSD_CK Not used SUR OSD DT Not used Not used SUR_CE Not used E volume motor 5 LOUDNESS Not used 6 Stereo signal detect terminal RESET Reset detect terminal Not used GND GND terminal 21 VIDEO B Not used 22 VIDEO A Notused Serial data signal KEY1 KEY4 29 AVDD 30 AVREF 31 OVERLOA Function Not used Chip enable signal Serial data signal Not used Hold signal input terminal Level shift control terminal Power supply terminai Notused AA Notused O Speaker select control terminai O Speaker select control terminal POWER RLY O Relay control terminai AF MUTE O Muting control terminai LIMITTER w lo MA ior o S FC1 SFC NR CE EL TNR D EL TNR CK VNCR2 ADAPTOR HOLD EMOTE GND SEL ST HELP LED STANDBY 2 3 5 Rotate control terminal of LI 7 0 A A Received signal detect terminal VDD EC MUTE S C SP SP B SP A U lt C O gt LI lt 53 B o Thermal mute control terminal Key matrix detect terminal 8 Power supply terminal INIT IN S16 S7 Power supply terminal J N a im O o U on 2 4 O A N y i Over load detect terminal Not used 34
34. ts may be isolated from the chassis by design These will read infinity 4 If the measurement is outside the specified limits there is a possibility of a shock hazard The equipment Fig 2 should be repaired and rechecked before it is returned to the customer Resistance Approx ce Ohmmeter M Before Repair and Adjustment Disconnect AC power discharge four Power Supply Capacitors C703 to C706 through a 102 5W resistor to ground DO NOT SHORT CIRCUIT DIRECTLY with a screwdriver blade for instance as this may destroy solid state devices After repairs are completed restore power gradually using a variac to avoid overcurrent Current consumption at 120V 50 Hz in NO SIGNAL mode should be less than 1000mA M Protection Circuitry The protection circuitry may have operated if either of the following conditions are noticed No sound is heard when the power is turned on e Sound stops during a performance The function of this circuitry is to prevent circuitry damage if for example the positive and negative speaker connection wires are shorted or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used If this occurs follow the procedure outlines below 4 Turn off the power 2 Determine the cause of the problem and correct it 3 Turn on the power once again after one minute Note When the protection circuitry functions the unit will not operate unless the power is fi
35. ulator transistor Ka 4 Then remove the 3 screws fixed to the power IC or transistor holder 5 When installing or removing the power IC or transistor holder be sure to use an offset screwdriver the bottom cover and align the ribs of the bottom cover to the lugs on the bottom chassis ass y 7 After mounting the bottom cover on the bottom chassis ass y fix it with a screw XTB3 8J SA EX110 Along straight screwdriver cannot be used for removing or mounting the screws since its long grip interferes with the neighbouring P C B and transformer See Fig 1 amp 3 A short straight screwdriver may be used for removal but cannot be used for mounting because the limited space in the unit will not allow sufficient tightening torque See Fig 2 amp 3 Insufficient tightening will cause poor heat dissipation from the power IC and regulator transistor and in the worst case may lead to their thermal breakdown A short straight screwdriver A long straight screwdriver Fig 2 Fig 1 OFFSET SCREWDRIVER The PROTO offset screwdriver No 34 is recommended for eThe address of PROTO International Sales is as follows mem gt lt a mm an m e w aw A Em Ga sm m n m wm Om m WP a s an am an p International Sales International Sales Office Stanley Proto Industrial Tools Singapore Indonesia Philippines Korea Hong 14117 Industrial Park Blvd Covington GA 3
36. wer on the unit Set the input selector button of the unit to the TAPE MONITOR postion Set the Speaker ON OFF button of the unit to the SPEAKERS ON position Run the tape deck QZZCLA 315Hz OdB Note Connect the probe of the oscilloscope to each test point and the to chassis ground probe L1 C413 sve pin R4 IC511 pin 7 R3 C512 ve pin L4 IC511 pin 1 PANEL P C B L3 C511 ve pin SOLDER SIDE SA EX110 NORMAL WAVEFORMS OF AMPLIFIER CIRCUIT AND LIKELY FAULTY BLOCKS TP CD player Tape deck AF oscillator Likely faulty block if the normal waveform shown at the left is not present Input selector block IC401 8 area 0 5msec 2V 1msec 500mV L3 R3 0 5msec0 5mV 1msec 100mV L4 R4 0 5msec 5V 1msec 500mV L5 R5 0 5msec 2V tmsec 500mV L6 R6 5 y 5 0 5msec 5 V 1msec 1V Measurement conditions Volume control VR501 Tremble control VR512 and Bass control VR511 positions Master volume block VR501 4 area L Tone control block IC511 4 area l Main amplifier block IC601 8 area 1msec 1V Volume control position VR501 for these test CIRCUIT BLOCKS OF THE MAIN UNIT RON COO EA mn TP LS R3 TPS RS TP L6 RE INPUT MASTER SELECTOR VOLUME amp SPEAKERS 10401 VR501 AF J oscillatori TAPE PLAY E Amplifier circuit line x SA EX11 M Terminal Func
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