SERVICE MANUAL
Contents
1. 0604 C604 1 PLAYER CASSETTE LPC LM440 20HM EW 141 1 5 5 da _ amp C605 WOOFER 3 20HM 10W d 0604 M e J ETT Ta SPEED CONTROL DECK 828 3 x ERA INPUT IMPEDANCE S E 60K MP3 WMA CD R CD RW PLAYBACK Sz n a Sam s Lal HEU By Sa B SF T iB d Ow MIC IN CIRCUIT Ba 47 OK wo 01302 g 52225 555 10901 70489473 FIXED GAIN gt M gj r z8 5 7 S E oe Wr sue ly Bla2. ET E s Je So AE OTA Og HI s Do art EA Gere E 4 Bs e GROWS HO 85 ae S 34 A R ge 06 meg 0 Om O PIS E ro 92355 6 8 NCAA E 2 R a t m 4 SPR101 gt E P DAT 2 14 63 123 Bele CET Danes S o E Dr P 5 Do E Rui PH 31 Ce gi 5 e fa 5 5 Ojo ss 111111 Ge E on 1 0866 CBT 2 R 5 8
3. CHANGE HISTORY 1 CD B D R811 27K 18k Vibration 2 CD B D C805 47uF gt 1000 ow Temperature EM 822 9 DO MAIN POKER No Reading ATR 100 E MODE 1 CONTROL AW gt H P MUTE zi osx 32123 R176 100 8888 E E le la E E Eg 9 59 BS 8 NE EU 169 colt 0172 EA N A AN N 2 4 oo 155133 W So eM A oe aS ala 1787 gt TAO0 8122 100 3 28858585 79 ee gt REC BIAS Tx py 19 0004 dut 0 2 MJER 25958 n m ot CD07 aloin ce 858 3 soi La 501 R145 100 ae d fos CDOS g P S02 AGND m 8146 too 600 0004 3 7 503 8 e 8165 100 0006 2005 504 AGND 00 E e 8427 App 100 MA04 10101 a 505 yoo m O
4. 5 Praa ES 010 5 N 4 E SPR103 Sk SH DC f 2 N E IN OO Ei S PLL CE Hd N 5 O 2254 8 Av E 1 8 8 5 mm 89989 586 Dilo 48 Missa 2155 a u eee 5 60 rr AS ES 25 5 38 2 23 S NZ lt S 9 Duos EM CRON Z St 08 Ho 0 S E e T EQ Rigo KO QE S no Rat E SE amp E b 9o 9 6196 C M BO xv 5 80 jeme 5 2010 EEES L 4200 EOS 1281 alo 1100510 o o Z gt PN205 jg SND SPRIO4 q
5. R407 R408 5 C405 C407 8 10K AW 2 2UF 50V 5 0401 2N70004 ED gt TAPE_LCH 1 R420 ja 1 C 1 MUX CH N MUX RCH mb PN40 1 S55 I e ST gt TAPE RCH CH4 5 ER 2 PB NF ACL E gt 32 19 8438 22K IREF PPS SHIELD GND 2 1 sm 390K ELO UND L RIP GND m e ES ala x CH2 3 e D BIN L ALC DET S C434 R437 5 5 2 10UF 16V 2200 10V Hm s TET T O1 vec 18 1001116 TN s 4 N SA 15 R435 IH HA12237 MUTE OFF ON ma SHIELD GND m 12 N SHIELD GND 5 N MUTE ON OFF e Cj PB MUTE R CH2 6 ee 29 gt t Sh N High Norm als 103 GND 7 E F 40 PB NF1 9 ALC ON OFF MK ES in E E E n UST EEE Q403 102 OS ono 5 lt m L L 2N 70004 Can P S L 1 Q405 KRA102 473 _ e 2uF 50V 10K 2 C470 0404 182 2N7000A 8458 475 47 MISS INSERT was happened KOT MES e W 14 0471 332 EN gt 6 e CI TABE B v s a vu A con AUTO STOP DECK CHAN
6. RB21 xx 58822 22 XX woo 823 1 9823 XX f R820 Xx RB20 OPTION TABL HB4B XX 8948 104 RB49 9849 18K 1 RESO XX RESO 10K RB51 XX 851 100 1 RB52 8852 6BK f ES N 8853 XX 8953 220 an E RB54 XX RB54 100 CB45 0 040 1 Tal 47 1000P con BER a an E Vref 1 B x 1 E 1 08290828 PNBOB 2 1 2 2K T 0 fu 0 tu E 3 g te 2 4 A PNBOS i E svo amp ar nus 1 4 N 7 n 150 22 0 00 E TA s E 1 x B26 X801 5 am 4 1 ej ws oma 1 DS 21818 5 8 8 5 8 5 N E 8829 5 8 8 5 8 8 gt J E 888228 SH 3 EE A PO yg Peto 330 1 wn pas 5 T y CNB13 olo E 2 1 2 nx amp CLOSE 1 ej Vi m E 0808 47000 3 un o D GNO 2 e AT LPF T Gj nur 7 4 TOP LOADING 94 He 56 MN 55 sss peo CIN 54 5868 330
7. ON 1 G Ws 542 FRONT P C BOARD 2 45 2 46 P C BOARD COMPONENT SIDE e SRO 4 2 sa O 0 O O O o 2 47 2 48 e CDP P C BOARD SOLDER SIDE e POWER P C BOARD 000 3 GND 2 VDO 6870R7168AA JACK 201 ESTORTISTAK 2 51 2 52 SECTION 3 EXPLODED VIEWS NOTE Refer to SECTION 4 REPLACE MENT PARTS LIST in order to look for the part number of each part AN CAUTION Exposed blade will cause severe injury 3 2 DECK MECHANISM LPC LM440 3 3 3 4 PART NO 6720AF0013A DESCRIPTION DECK AUDIO SPECIFICATION CFM3211 TOKYO PIGEON L SINGLE 6768RZQP01A 6768R JP03A DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 4674 P 50 093 41144 PIGEON CST MOTOR GEON PULLEY FLYW 6768RZGP002A 6768R AP01C DECK MECHANISM PARTS DECK MECHANISM PARTS 50 239 4072 P 50 093 4
8. 909 AQ e a 687 OR 7153AA EET Sie trc Hid r HS SES ES a TSP B 5814 1249 SE CHJ 288 oro 5 Ne PIRJES NEI OE Ta 39 wm 6341 hY z S ess C345 GET zo HE 2 3187 OB EKO Hj A Mlo oC 3343 a 288 zo SPRIO2 Z pe A RISI ER
9. 1 7 SECTION 2 ELECTRICAL 1 ADJUSTMENTS 1 TAPE DECK ADJUSTMENT DECK MODE TEST TAPE TEST POINT ADJUSTMENT ADJUST FOR PLAY BACK MTT 114 L R Output Azimuth adjusting screw L R Maximum 2 RECORD BIAS ADJUSTMENT DECK MODE TEST TAPE TEST POINT ADJUSTMENT ADJUST FOR CIRCUIT B POINT AUTO STOP 65KHzx5KHz 3 TAPE SPEED ADJUSTMENT 2 1 TROUBLESHOOTING GUIDE CD PART TURN ON CD OPEN CLOSE CHECK YES CONNECTOR CHECK PN813 READING DISPLAY CHECK NO CONNECTOR CHECK PN802 PN806 CHECK MICOM INTERFACE CIRCUIT PN805 NO CONNECTOR CHECK PN801 O N CHECK PICKUP MOVEMENT NO NO NO CONNECTOR CHECK PN806 Pin1 amp Pin3 READING OK CHECK YES IF PLAY AUDIO OUTPUT CHECK YES 2 2 OPEN COLOSE NG DOOR OPEN CLOSE NO DISLPLAY CHECK YES CONNECTOR LOCKING CHECK PN813 YES MAIN B D CHECK Check Q101 B 4 5V READING DISLPAY CHECK ONLY CD DISPLAY CONNECTOR LOCKING CHECK 801 805 802 806 5 CHECK POWER SUPPLY DEFECTIVE CONNECTOR OR MAIN PN251 MAIN POWER SUPPLY PN251 PIN 5 6 2V PIN 7 6 2V YES CHECK VOLTAGE CD B D IC804 DEFECTIVE IC804 Pin3 6 2V Pin 2 amp 4 3 3V YES CHECK INTERFACE WITH MICOM MAIN CN111 Pin AS LASER ON IC801 PIN 18 CHECK CD B D PN801 Pin 10 1 96V 2 45V PICK UP UNIT OR Q801 DEFECTIVE OPEN CLOSE S W CHECK READING OK CHECK N
10. VOLUME lt gt button TAPE PLAY TAPE REVERSE CD OPEN CLOSE A PUSH EJECT button PLAY button LPC LM445A X KT POWER WOOFER button buttons TAPE button STOP lll CLEAR button CD button EE FM MODE RIF REPEAT button TUNER BAND button SET CD button CD SYNC button TAPE MODE button LPC LM445A X TAPE SPEED button COUNTER RESET COUNT RESET button XDSS button EB FM ANTENNA E BATTERY COMPARTMENT MICROPHONE SOCKET 0 3 5mm VOLTAGE SELECTOR OPTIONAL OPTIONAL HEADPHONE SOCKET 42 PHONES 0 3 5mm c POWER INPUT SOCKET Remote Control TUNER BAND button MUTE POWER button 3 MUTE button VOLUME E im i PRESET V A buttons VOLUME V A buttons CD FUNCTION buttons EB kd PLAY PAUSE 1 button e SLEEP button CD button d CD SKIP SEARCH 3 144 lt lt gt gt pp button REPEAT button FUNCTION buttons OPTIONAL RECORD RECORD PAUSE 6 11 button EQ PATT 56 500 REVERSE PLAY button OPTIONAL eu FORWARD PLAY Po button EQUALIZER PATTERN u TAPE STOP button EQ PATT button 0000 FAST FORWARD P button NUMBER buttons 4 REWIND 4 4 button XDSS button SURR button
11. o SK i N Nm ee ee I TAPE lt S 108 1 1 e KR m POLE DAD i2 ov 8 8 SEND m Re12 27 ey amp gez 1 5 86270 CURRENT N 2 i seo gt s 214 270 m NO LOADI 10 UP pa P STAND BY OFF 20 46y 1 aman 5 71177 Ba STAND BY ON 19 38V Sef zx a 13m SS A A 7 1 mW Ss ux 5 Qu i J Seq a 5 FS DROP VOLTAGE 184 R204 8 re Tu j d Tet 1 8 KRC103 ABSOLUTELY CHECK 22K aces do Je rg From Battery 1 EMS Application REC Pop is happened change 2 2uF 16y 7D111 STAND BY ON CONDITION xxx B 30 130mV gt 50 50 30 130 217 1 Vz 9 3V A 2 Iz 16mA N FM 22 5kHz 130mv 40kHz 40722 5 130 231 20251 STAND BY ON CONDITION xxx LPC LM440 445 MAIN 1 Vz 6 93V S IC271 812C50AY NO LOAD CURRENT 0 1uA 2 12720 5mA 2003 te 16 5 Typical TO 92 REGULATOR 3 SmA 2 29 2 30 SCHEMATIC DIAGRAM
12. Q171 Q172 Q173 Q101 e c F cl E 0 0 469 0 447 0 0 0 451 Q111 C B SECTION E C B 0 0 72 0 024 DC BAT 0 4 53 0 Q801 po 33 648 33 31 305 0 CD PLAY MODE CD PLAY MODE 2 25 BLOCK DIAGRAM TAPE L 57179 3 1 Mi 1 601 TUNER PACK MIC CIRCUIT MIC IN D L i E TUNER PACK KIA4580 TUL TU R PLL CE PLL CLK GND TUNER B IC 301 TDA7468 VOLUME IC L CH 20HM p MUX L Lon 1 1 Elx 20HM 5W TUNER R c 4 Dl 5 i 1 MUX R CD R 70901 TDA8947J Y 5 LI 8 Tires DEM POWER IC I AW H r qd vec 1 AW D N 1 KIA4558 M 1 i TAPE Bt OSC H H FET SWITCHING BLOCK la 1 i TAPE R I LOW PASS FILTER ki 9401 0402 0403 0404 C
13. 100 and aluna LCB77480 MI 506 589 14 Mie 100 0002 R492 DIODE PIN NO OPTION sor 507 00 00 Ko m AW MA06 10 alo FM STEP 72 S08 MA01 Rfg4 1K mut 6161 100 C001 O AMUTE 0102 34 hx TPE ss 104 19 0 D103 33 STEP 509 02 125 1 BK 090 m NM 32 IL 30K OJ sto 0 S10 TE 11 Y PICK UP xn 0104 3 01 sow sit fes zm 112 T a UNER AREA siz 68 MAO 9158 AK S e 474 0101 35 OP OLIO 513 L_ gt CD POWER 55555 A 5 g 41 vest 0108 36 0 lt 0 1 4 160 sta 87 04 222282 10 e 1 RE S14 127 nb doe Ja 0107 37 iO lad 1 0 st 56 AW gt oti w Di 38 SPEED CONTROL S15 MA05 128 AK 333383 82 9T f 2 1177 SPEED 11170 SPEED E VOL SOLK 15513 l 1 tene ste 54 516 8129 100 En 10uH X102 9 B304MHZ kev STOP REVERSE T S17 55 W m DO Y 07 m 130 AK cat 13 evo Ne 182 W PB_SW 104 ian par CD11 S18 TA03 A131 t 1 00 LEAF sie W REC_SW os jos os Tics 21 p SpIMODE HALF sis 519 1404 Ay 132 AK HALL SENSE m b Ve 22 1 SHIPEC P PEC F 59 520 7 98 3 RABO a 5 ses 58 521 ARIS AK POWER SENSE 32 SAMSUNGOSONY P
14. 83 qd m 2 8858952 8 5 5 5 8 53 a 220 m i A aN t X301 EM NJ sy ki S aj S S 3 2 8 5 Hooour 25v E 5 22 18 x JAK gs 2258 Bx T 1304 0303 55 st 4343 BNE y Loar T 4 voor KT 3198 Hu Y 818 C98 qu gu E 4 al r ee 2 Hl gf Bl Fy oo o 41 pe i aan Hal z at 2 R655 B g 3 2 thi KTC3198 58 8 m ze 5 os les C62 47 0 z2ur covT alg yn lt Baile ep e pom RUE 8582 7 al 8 y pl i F x E 8 s SS 831 0883 S 18 470F 25V ES IED EN N 4 m x o oN sit Ll d c sx c a s a a 9 8 3 ar S 0653 8 aa C365 R368 sala oh de QT al E RES gi 5 a 103 2 2K gt 1 1 1 1 1 1 1 1 1 i z amp zs ou x x 9 a 0 9 5 5 61 6 8K 654 4 7uF 50V e E als 0905 END 10 OPTION 4 2 n uuo AW ee L R PE T Be applyed when Bos n 215 ia 4n PLL CE 9 IC dont E AN IK yx 28 98 0252 En gt t 7 IACKSO4 115804 TDA7468 INPUT I
15. Inverting input of CH3 OP ANP 24 OPIN3 Not inverting input of CH3 OP ANP 25 OPOUT4 Output of CH4 OP ANP 26 OPINA Inverting input of OP ANP 27 OPINA Not inverting input of 28 BIAS Input of Bias Amplifier 2 22 J IC TR VOLTAGE amp PIN DESCRIPTION Measurement Condition AC 230V 50Hz MAIN SECTION IC301 Volume 10 Povver on Unload 14 5 6 7r e 9 v1 2 8 14 15 Q N N N 6 N N N N N LO RIS e oe cele ele X AIN CD oj ola oN NIA SIN ola 5 4 LO N O N N N O e 5 22 0 21 E T N 923 0 1878 924 o 35 o 328 325 17 32 10 65 3 14 321 9 251 0 16 17 tO co N N tO tO N N e 18 79 9 24 5PIN WOOFER ON 18 67V 271 14 2 GND 3 OUT 9 41 Q601 LE E B Lo o 065 ES 6 319 463 3 76_ Q303 Q253 Q302 Lo 1 19 065 E C J B 658 8 54 73 0301
16. REPLACE Q251 2 10 MUTING CIRCUIT MUTE Dose HIGH appear at NO Check the HIGH of the MO Check the 10101 Q601 Q651 Q256 SUB W B 1 101 Pin 9 47 YES YES Check the pattern Check the LOW of Q601 Replace the Q601 Q651 Q605 Q256 E Q256 FUNCTION MODE AUDIO ABNORMAL TAPE FUNCTION YES Check the signal input 0110301 Pin 3 26 YES Refer to TAPE Trouble Shooting CD FUNCTION MUTECheck the signal input of IC301 Pin 6 23 Check the signal input of PN251 R CH L CH NO Check the CD B D TUNER FUNCTION YES Check the signal input of IC301 Pin 4 25 YES Refer to Tuner Pack Trouble Shooting 2 11 e C301 TROUBLESHOOTING Check the Power supplying to NU IC301 pin 1 YES Check the CLK Data of 1 301 14 15 5 Check the 101 Function Selector Check the DC Output of Q301 6 8V Check the Data of 101 pin 6 7 CD TAPE Function Check the Pattern YES Replace the IC301 2 12 Check the IC101 e TUNER PACK TROUBLESHOOTING Check the Tuner Power of Ne Check the DC output of Check the high 403 Pin 2 Tu B HIGH Q231 Q232 B YES YES Check the DC output 0233 E pattern CE Chip Emable DI Data Input From u com DO Data Output to u com CLK Tuner Mode Clock Replace Tuner pack or M
17. COCHE i ON KAN gt S M lt AS NU EI 11 3 3 DOW 5 EA A 3 8 4 u o1v oM H Mo H NIO3UH TK Mar iq w 1 LNOdd 4 x u unosd IL vl VL 85 5 o mnoo 52 S o VP 0710003 oo z z Q oa gd E 2 gjozad E L 1 m i s T 1231 66 lt lt H zjJN 9d z z fis ff XY 5 OS TOJ 6 9 lt amp lz 9 gt iL lt lt 2 zz L 2 lt F m m lt 2 m m m BF gif 1 N e 1 BLOCK DIAGRAM AM5810 Motor Driver ICs 28 27 26 25 24 23 22 21 20 19 18 17 16 15 TOK 10 77 CH 1 CH4 EN 1045 zz 10K N MUTE EI Er POWVCC34 CH3 CH4 4 75 m 10K 10K 10K AW 46K 8 16K N al i 7 5K LEVEL SHIFT LEVEL SHIFT 7 5K 5 LEVEL LOADING PRE AM SHIFT FWD REV 16K LEVEL Dod SHIFT 16K i i tox 5 10K 10K z 10K POWER PREVCC PO
18. ST y 57226 7 BIN STFEG AM STREQ 1 8 om testo 53 ye T em ICBO1 coro 2 i E cat 10 056 10 vezen 5 y v n 11 50 42 iud LC78690W 49 DO e 2 arc 188 6 Gala o olu 14 y 8 f 0813 0 0560 e 15 DI Ts g IL e 7 4 8 cata 0 010 e 4 amp 191 s ovss p p H 20 wo 634 SZ 888 5 825 5 5 5 8 8 5 8 8 5 BE 0 10 z 8 8 sell pe EEE 388 MU T 100 alal ajr 6 10 8 8 8 2 EI EI EH Vd ve 656 LX CoL QE IRR seti yy 1 no Uu AMBB10 5812 8 WW zax 2 COMES ERE 145 7 Ga 0 m ICB N 3 Leo 2 24 0 AXE 80 8863 3119270 4 1803 E LOADING TES gt RB 0 1804 9 47 15 E case 1750 N 834 47 16 1 1 2K 6 5 0 T Lelo ki p GPIOAL MINI mn l KA3082 q RB37 8 1 81813 i ie 7 TA ale x 2 2 5 pog H E x xlelol EX ole Ex 1 AC VE 4 1 MINI juna em oman 4 AW 4 i 5 6 ANY m
19. TUR 2 4 60 02 3 MINI MICRO zea 4 LLL i 1 IBI PHOTOCL 1 e Va 100 g zz 0 T i cd tu 2 E g i I um 7 cms S n 6 V ejajn wo A 8 DI al g 55 8 EE EEE CST 14 1 gt MICRO i6pin 3854 168554 001 sht MINI 20 2 39 2 40 WIRING DIAGRAM LPC LM440 WIRING 2 POWER REMOCON KEYS 3P 3P 2P SUB WOOFER SPEAKER 2P 4P WIRE CD DOORS W MAIN B D 16P FFC CDPCB MOTOR 8P TUNER 10P ANT WIRE 1P 12P FFC DECK HEAD WIRE 8P 40 P FFC LCD FRONT 2 2P 2 41 2 42 PRINTED CIRCUIT DIAGRAM MAIN P C BOARD Q 687087169 E LPC LM440 BAT SUB o N 0 9 Q 5870R7163AA O LP LM449 BAT SUB ay 0620 gt nn N rom ovi C327 5977 36991 SBTIRTISSAA OL 0812 lt B 2551518192182 O O O LPC LM440 MAIN W ES 33 p e CN E ER B 19101919 a OO JA 1 O 3 ma 7 2 05 04 18 QO ko
20. m H EMS Application z z 00 ai Dy Rx ae al g C105 C107 855 Ss 21 8 5 EE 223 223 st 83 5 ST 82 8 Lo od dk aL KI 4 AK 0151 O AW 01 dgio 10196 nibo L BAT 1 APPLICATION TUNER PACK 6700401118 J AD CE amp Asis 6700FM0110C EUROPE ASIA 50uS 1 AlAmerica Domestic 6700FMO1098 6057 015 50 5 _____ 211010 STOP amp AUTO REVERSE MODE KEY CONUTER RESET KEY LPC LM440 445 MICOM IC ANGULAR SPEED CONTROL KEY REPEAT KEY UNLESS OTHERWISE SPECIFIED 2157 0 CONTROL HAVESHAVEN T 2 31 2 32 e KEY SCHEMATIC DIAGRAM gt 4 lO Ll N O O 3 CU N 21 5 M Oo O m gt N lt E U 1 i 099 bi x 031 A8 1S 4 Wd 0 5 099 io T J 4 AD 8380 E CAM 14 M t h o LO zoMs x ys 3 L3 RES 8 01 5 Ns B dd 10185 9716 SH 9015 E 8 90HMS y g 5 34 018 530 yo zi
21. 020 PIGEON WASHER CWL 6768R WPO1E DECK MECHANISM PARTS GWP12X030040S PIGEON WASHER CW
22. 0651 0271 0 69 El A po 0 0 65 MUTE ON E CB Q274 0 65 MUTE ON Q252 LE cl 0 65 MUTE ON Q272 Q257 EAN Bj 6 49 18 68 E 0 0 436 S W ON Q256 Q273 o ies o E C B 0 7 0 Q258 Q201 18 13 c18 18 87 18 83 0 64 S W MUTE E C B Q259 0 432 44 CD MODE E C 6 49 6 48 5 71 Q213 LE 0 1865 0 B 18 68 9 96 18 66 Q233 Q212 0211 9 39 1883 9 96 E 0 04 066 0202 BAT 4 4V 9 47 876 TAPE MODE Q265 4 68 4 67 4 13 0241 9 48 9 38 897 TUNER MODE Q262 E 8 26 oo im Gee O gt o oc 5 D e Sto ls 2 z E CD SJE e o o 063 Q263 pe po 063 0 Elele 0 0 09 425 Q242 TUNER MODE 2 23 Q251 DECK SECTION 1 401 Li 2 4 s 15 0 63 298 295 443 451 o 42 o o 447 59 o o 886 8 33 o 126 393 445 o
23. 1136 PIGEON GEAR ASSY CLUTCH GEON ARM CWL44 6768R GP01J 6768R SP01P DECK MECHANISM PARTS 50 222 4428 P 01 081 4678 P GEON GEAR CRL442 GEON SPRING CRL4 006 6768R SPOIP DECK MECHANISM PARTS 01 081 4678 PIGEON SPRING 6768R LP01C 6768R BP01C DECK MECHANISM PARTS 50 223 4429 P 02 083 4188 P GEON PULLEY FLYW GEON BELT FELT C 008 67688 DECK MECHANISM PARTS 02 083 4188 PIGEON BELTFELTC 6768RZVP02A 6768RZXP02A DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 41073 PIGEON CST SOLENO 50 093 41076 PIGEON SPECIAL PW 6768R GP03A 6768RZJP01A DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 4810 P GEON GEAR ASSY C 50 093 31032 PIGEON CST PULLEY 6768RZHPO1A 6768R SP01D DECK MECHANISM PARTS 50 093 4960 P 01 080 4609 P GEON HEAD ASSY C GEON SPRING CWL4 014 6768R SPO1D DECK MECHANISM PARTS 01 080 4609 PIGEON SPRING 6768R APO1A 6768RZBP03A DECK MECHANISM PARTS 50 268 3016 P 02 083 4268 P GEON ARM CWL44 GEON BELT FELT B 016 6768RZBPO3A DECK MECHANISM PARTS 02 083 4268 PIGEON BELT FELTB 7 6768R GPO3B 6768R SPO1F DECK MECHANISM PARTS 50 222 4578 P 01 082 4598 P GEON GEAR IDLER GEON SPRING CWL4 018 67688 5 DECK MECHANISM PARTS 01 082 4598 PIGEON SPRING 6768 6768R MPO1C DECK MECHANISM PARTS 33 160 4309 P 50 219 4014 P GEON PRESS CASSE GEON MO
24. 23 4429 P 02 083 4188 P GEON PULLEY FLYW GEON BELT FELT C 6768RZVP02A 6768RZXP01A DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 41073 PIGEON CST SOLENO 50 093 41073 PIGEON CST SPECIA 6768R GP03A 6768RZJP01A DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 4810 P GEON GEAR ASSY C 50 093 31032 PIGEON CST PULLEY 6768RZEP05A 6768R SP01D DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 4809 P 01 080 4609 P GEON CST HEAD AS GEON SPRING CWL4 6768R APO1A 6768RZBP02A DECK MECHANISM PARTS DECK MECHANISM PARTS 50 268 3016 P 02 083 4267 P GEON ARM CWL44 GEON CST BELT FE 6768R GPO3B 6768R SPO1F DECK MECHANISM PARTS DECK MECHANISM PARTS 50 222 4578 P 01 082 4598 P GEON GEAR IDLER GEON SPRING CWL4 6768R PP03A 6768R MPO1C DECK MECHANISM PARTS DECK MECHANISM PARTS 33 160 4309 P 50 219 4014 P GEON PRESS CASSE GEON MOLD CWL44 6768R SP01A 6768RZSP01A DECK MECHANISM PARTS DECK MECHANISM PARTS 01 081 4601 P 01 082 4688 P GEON SPRING CWL4 GEON CST SPRING 6768R CP01B 67688 DECK MECHANISM PARTS DECK MECHANISM PARTS GSE20A2005 PIGEON SCREW CWL44 GSE10A2003 PIGEON SCREW CWL44 6768R WPO1F 6768R VVPO3B DECK MECHANISM PARTS DECK MECHANISM PARTS GWN21X040040 PIGEON WASHER CWL 03 000 4532 PIGEON WASHER CRM4 6768R WP03A 6768R WP01D DECK MECHANISM PARTS DECK MECHANISM PARTS GWN19S035040 PIGEON WASHER CRM GWP21X045
25. 3 AN 73 1 3 BV FF REW 170mA LPC M440 445 DECK 3 E 2005 04 21 S 31 ON 74 9 230mV 74 6 10 BBY 74 9 7 21 74 5 3 03V 74 9 3 52 ANGULAR 0 UNLESS OTHERWISE SPECIFIED 1 e 5 4 2 37 2 38 CHIP WMA MODULE SCHEMATIC DIAGRAM
26. 445 0 453 445 295 295 0 63 063 o o o o 0 0 0 o6 7 SOLENOID ON TAPEPLAY BACK 8 TAPE PLAY BACK amp REC MICOM SECTION C101 1 3 447 CLOCK CLOCK OLOCK CLOCK CLOCK CLOCK N C 453 448 Der 4 47 4 49 449 297 19 19 1060610006 274 467 317 4 56 447 453 453 453 405 o 453 453 4e 47 48 so 51 52 53 54 55 56 57 58 59 60 4 53 453 451 NC sec sec SEG 46 0 5 sea SEG SEG SEG Let 62 63 64 65 66 67 es 69 7o 71 72 73 74 75 76 77 78 70 81 82 as 84 85 se 87 88 eo oo SEG SEG 457 o o cow com 453 4 63 2 24 ot 92 94 95 00 97 99 100 1P CD MODE 9P MUTE ON 20P CD DOOR OPEN 4 54 CLOSE 2 97 21P PLAY 1 9 STOP 2 39 22P F 2 8 R 2 39 1 87 PB 4 53 REC 0 33P SOLENOID ON 34P MOTOR ON 41P AC 0 DC 4 5 42P PB 0 REC 4 53 43P AM REC amp RIF ON 4 53 44P SPEED 10 UP 45P NORMAL SPEED 46P SPEED 10 DOWN 47P WOOFER MUTE ON 48P H P OUT 4 51 H P IN 1 2 87P PB O REC 4 53 91P TUNER MODE 92P TAPE MODE 95P CD MODE 97P WOOFER ON 98P H P MUTE ON 100P CD MODE
27. E Q801 DEFECTIVE PN801 CONNECTOR DEFECTIVE PICK UP FOCUS ACTUATOR 2 7 READING OK CHECK D NO DISC DISPLAY DOSE SP WAVEFORM APPEAR AT IC802 11 SPINDLE MOTOR DRIVE WAVE DOSE SPIN WAVEFORM DEFECTIVE IC801 APPEAR AT IC802 Pin6 SPINDLE DRIVE WAVE DEFECTIVE IC802 DEFECTIVE PN802 CONNECTOR DEFECTIVE PICK UP SPINDLE MOTOOR CHECK PN802 CONNECTOR LINE READING OK CHECK E NO DISC DISPLAY E DOSE TA WAVEFORM APPEAR AT IC802 Pin17 TRACKING COIL DRIVE WAVE DOSE TAIN WAVEFORM DEFECTIVE 1C801 APPEAR AT IC801 Pin23 TRACKING DRIVE WAVE DEFECTIVE IC802 CHECK PN801 DEFECTIVE PN801 CONNECTOR LINE CONNECTOR NO DOSE RF SIGNAL APPEAR DEFECTIVE PICKUP IC801 PORT2 OR IC801 WAVEFORM 6 MAIN POWER Main Power input AC cord in YES NO Check the Voltage selector FCD Display gt 110 230 Duble Voltage only NO NO Check the DC out of C202 4 Check the Fuse Replace the Fuse 4 2 Replace D201 D202 D203D204 D903 D904 POWER B D NO Q251 Emittor Voltage Check 9 6V 271 Vout Voltage Check 5 2V REPLACE IC271 Q265 Collector Voltage POWER SENSE Check 5V BLOCK CHECK 0173 Collector Voltage RESET Check 4 6V BLOCK CHECK D181 D182 D183 Cathode REPLACE D181 Voltage Check 4 6V D182 D183 OSC 102 9 8304 2 REPLACE X102 REPLACE MICOM IC IC101 LC877480
28. GING CONSTANT L Eie MY W Vio IN ass lt REC e HEC BIAS na 1 36 E i R463 184 X 05 M LoS EAS 4 J BEAT_CUT B SO 3 1 4 N 0485 2 lt JA 1 A R413 18K C470 yo 1 79 8 320mv KTA1266 X 42 H485 R494 N i m 1 1 562 2 6 1 N ST O i a 1 AB 25 1 al I 0486 lt 10 481 122 ENDE 0471 i e IKac103 aj KTD1302 TA SHBA NORMAL _SPEED EE WA PN402 KRC103 4405 N T 8486 104 O 8471 MOTOR B qag 4 7 79 8 587 a ia 7 Me KRC103 5 tol MOTORA 5 E VCC 19V 3 EE 8485 1K mode becomes when pi 20 is shorted to GND HALL OUT 4 ANN py HALL SENSE open pin 20 on to the ion of mount RIF ON AM MODE REC HIGH HALF SW 5 gt PB SW 8484 10 1 1 PB OCCASION OCCASION DECK MAIN B 0487 20 m m 483 15K 14273 KTC2020D PB MUTE LOW HIGH 1573 R482 0488 m ANN KAC102 8443 390 MOTOR HEC MUTE HIGH LOW ANN R441 i REC G OI um K 87 PEED CONTROL pin Sa REC BIAS LOW HIGH CIRCUIT N 15K TI i MOTOR POWER ON OFF CIRCUI EE ig 10 H MD SOLENOID CONTROL CIRCUIT 8 DIMENSIONAL TOLERANCE A H A POINT B POINT C POINT D POINT E POINT A 1 1 155 N RIF OFF 79 76 2 2371 79 3 11 96Y 79 8 11V 79 7
29. ICK UP TU04 amu OK 25 FM K 56 8135 AK 8167 aal 35 TUNER AREA gt 7 10K 1 808 SENSE 36 TUNER AREA 1551337 T 07 1361 G 27 37 TUNER AREA rm 4 AW gt SOLENOID x 38 DECK AG STOP amp A REVERSE N 524 TA08 813716 1 PONER KEY 39 SPEED CONTRO TAPE Have 4 Haven t 524 mm 0482 AW Moron 23 1 5 8 el E ses 62 do 1900 yp PIEK SHE L cies x x EM ses Sa6 1SR102 7601 9140 4K Qo amp ros 888 55582 333 AW PLL DI 8g EPCONPCCCEEEEEEEEEEEEREEL 4 3 l L gu TEEEEEETEPETEEEEEES 0183 Juo At O au 4 PP 5 SS S393 q Wu 527 m T3 AM BU PLL DO EN ald es 3 LEPPEEPEEDEEREEREEEEEEEEEEEEEPPPEEREEERHEEE 177 bx 104 T TAO 1431 Hell x 33 3 AW gt PB_MUTE TAO 144 AK AW DO BEAT CUT 1551337 0105 1551337 MA20 8155 Pope im AB HEADPHONE IN mim T gja 1551331 55133 AK yp 100 WooFER_MUTE sja pose itt 4 gt 007 MA11 R157 155133 15513379 huas T gt MODE2 CONTROL K 8 8 Soto 8 1815 15 2 Ss 8 ERES MA23 4K EE E x m W NORMAL SPEED R184 4 t AWE CER 10 F3
30. IN SERVICE LITERATURE 1 4 SPECIFICATIONS SECTION LPC LM440A LPC LM445A Power supply Refer to the back panel of the unit Power consumption 40W Mass 5 1kg External dimensions W x H x D 456 x 178 x 338 mm General Output Power SW X2 10W Speakers 3 20 X 3 Battery Operation DC 12V 8 D R20 batteries not supplied Frequency response 100 18000 Hz Signal to noise ratio 65 dB T H D 0 5 Tuning Range 87 5 108 MHz 65 74 MHz or 87 5 108 MHz Intermediate Frequency 10 7 MHz Antenna Telescopic antenna Tuning Range 522 1620 kHz or 520 1720kHz Intermediate Frequency 450 kHz Antenna Ferrite bar antenna Recording System 4 Tracks 2 channel stereo Frequency Response 125 8000Hz Signal to Noise Ratio 40 45dB REC PLAY Designs and specifications are subject to change without notice 1 5 J IDENTIFICATIONS OF CONTROLS TAPE DOOR A PUSH EJECT EP RECORD RECORD PAUSE REC PAUSE CLOCK button button OTIMER button PROGRAM MEMORY PROG MEMORY IEJ POWER STANDBY ON button button ES REMOTE SENSOR TUNING TIME CD SKIP SEARCH EX LEFT RIGHT SPEAKER TAPE REWIND FAST FORWARD K SUBWOOFER 144 44 gt gt gt gt I buttons LCD DISPLAY WINDOW PRESET UP DOWN CD PLAY
31. IRCUIT L P F 1 0405 0405 REC MUTE 1 1 aa 1 5 1 1 HEADPHONE IN 1 1 SOLENOID MOTOR DRIVE Q 1 IC101 ove P leva amp lt CIRCUIT 1 CIRCUIT 8 i MICOM s 5 1 vec 1 ja E B 2 1 o i ur LC877480 H SUB WOOFER 1 N N Sle lt 8 8 I 10 0 SEEN AN B m T 1 1 2 2 L 9 MOTOR SPEED CONTROL CIRCUIT i Nagasnassagassaaseassasasaasaa sae V m NORMAL SPEED 410 UP 10 DON I 8 388 ui O AW E AAA 5 MODE 1 e WOOFER F I 5 i 12V A rach OER 0 5 8 N 1 A 1 REF LD 3 3V lt _ 3 3 K 1 t N 1 ea 42V pr E 5 1 1 I L ig E MICOM REGULATOR POER CENE E L T lt d i CIRCUIT H CIRCUIT N 3 K B 2 Er 5 42 oo 1 1 10504 1 4 E x Ne 11652793200 2 o DIGITAL SIGNAL PROCESSOR a lt 5 IC 503 BABB10FP CD DA 4 DECORDING E Az I 5 ACTUATOR amp MOTOR DRIVER WITH DAC epe amp a 1 O i g amp E ollo O 1 M de TR 5 3 O I wi
32. LD CWL44 7022 67688 DECK MECHANISM PARTS 50 219 4014 PIGEON MOLD CWL44 7 6768R SP01A 6768RZSP01A DECK MECHANISM PARTS 01 081 4601 P 01 082 4688 P GEON SPRING CWL4 022 6768RZSPOIA DECK MECHANISM PARTS 01 082 4688 PIGEON CST SPRING GEON CST SPRING 6768R CP01B 6768R CPO1A DECK MECHANISM PARTS DECK MECHANISM PARTS GSE20A2005 PIGEON SCREW CWL44 GSE10A2003 PIGEON SCREW CWL44 6768R WPO1F 6768R VVPO3B DECK MECHANISM PARTS DECK MECHANISM PARTS GWN21X040040 PIGEON WASHER CWL 03 000 4532 PIGEON WASHER CRM4 6768R WP03A 6768R WP01D DECK MECHANISM PARTS DECK MECHANISM PARTS GWN19S035040 PIGEON WASHER CRM GWP21X045020 PIGEON WASHER CWL 6768R WPO1E DECK MECHANISM PARTS GWP12X030040S PIGEON WASHER CW DECK MECHANISM LPC LM445 3 6 PART NO 6720AF0014A DESCRIPTION DECK AUDIO SPECIFICATION CRM3213 TOKYO PIGEON L SINGLE 6768RZQP01A 6768R JP03A DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 41144 PIGEON CST MOTOR 50 093 4674 P GEON PULLEY FLYW 6768RZGP002A 6768R APO1C DECK MECHANISM PARTS DECK MECHANISM PARTS 50 093 41136 PIGEON GEAR ASSY CLUTCH 50 239 4072 P GEON ARM CWL44 6768R GP01J 6768R SP01P DECK MECHANISM PARTS DECK MECHANISM PARTS 50 222 4428 P 01 081 4678 P GEON GEAR CRL442 GEON SPRING CRL4 6768R LP01C 6768R BP01C DECK MECHANISM PARTS DECK MECHANISM PARTS 50 2
33. LG MP3 CD LOGIC DECK CASSETTE RECORDER LG Electronics Inc MODEL LPC LM440A X LPC LM445A X CONTENTS O SECTION 1 GENERAL e SERVICING PRECAUTIONS ESD PRECAUTIONS 250803 Dk usaba _ 8 SPECIFICATION ERE IDENTIFICATIONS OFCONTROLS ix kn 3k x x o PES REESE EE O SECTION 2 ELECTRICAL SECTION ADJUSTMENT ute petes me MAE k kusi e TROUBLESHOOTING GUIDE e INTERAL BLOCK DIAGRAM OF ICs e C TR VOLTAGE amp PIN DESCRIPTION BLOCK DIAGRAM e desa e RR hee e tate Sea e SCHEMATIC DIAGRAMS s WIRING DIAGRAM ss nte el 3 stet x maca gun a a p h ao PRINTED CIRCUIT BOARD DIAGRAM O SECTION 3 EXPLODED VIEWS O SECTION 4 REPLACEMENT PARTS 4 1 SECTION 1 GENERAL SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK UP 1 Notes for transport and storage 1 The pick up should always be left in its conductive bag until immediately prior to use 2 The pick up should never be subjected to external pressure or i
34. MPEDANCE Hoz T R Me 01302 s 878 alps E 158 PLL D0 8 i ce BOK ALL 471 a i i i ds Nat 7 15555 fem ga 5 n m a x lt ik Qu eg C971 1975 PLL DI 6 6 6 Z S 3 YF a lt D T R 22uF 50y 202 8 104 MI E U s O OF yo R252 R CH 5 4 quu EER 933 1 W ve Te e 1 gt o 3 4 ri f 0 GND mud 8 ing indi Sf 5 nis I Rend de 5 s 877 8876 1926 100uH L CH 3 SEE amp de zz Lan NE 01302 S S 1 40K 3 9K 7 8 8 L s D B 5 7 ALT 1 28389 EE 18 5 x HN ngs Las aN ET R312 220 C305 Rogo ASH 974 5 T TEE e 9820 5 003 0 E g s Met 1 L SUBWOOFER PLL CE 6349 1320 SE gt m Jak R87 0274 717332 3 x 3 oy s 0273 En na W 6 gt 98 es 85 Ng 4 KRC103 KTC3203 1 sew 4 7uF 50V a as 8 270 D273 s PLL DIK J nje HAS es 55 amp 4 0274 155133 9 95 5 824 ums gt 5 KTC320 0272 N C t 3 7003 HEADPHONE OUTPUT 12 8mW 160HM 5 LO a AM 33 83 D ingz TAPE LCH S gs 5 l S 3 lt 1 n T 8 FROMISHEET2 5 8 ssa 8 UT 5 ins BS 8 9 3 6 1 meni 2
35. N4 12 input 4 CIV 13 Common input voltage decoupling OUT3 14 inverted loudspeaker terminal 3 GND2 15 ground channel 2 Vcc2 16 supply voltage channel 2 OUT4 17 non inverted loudspeaker terminal 4 2 18 TDA7468D BLOCK DIAGRAM 3349 OND T OSsva 1 155 8 1319381 8901 66 deis gpg deis gpz deisgpz d s Ye pg Ol 1 byl ol pl XIN 319VIHVA lt 2 BurieAur uou 194ng m O SAVM 2 19 app st EPO XIN OIW 1084800 ssva apel gp6 XIN SPO 5518 3719381 2 dois gpg deis epe deis gpz gpg deis apz epritolti 600130 pl dejgpi DunieAur uou ure 010 gpeg 194ng H ossva H ISSVg 3183 4 9 PIN CONNECTION GND CREF IN1 R IN2 R IN3 R IN4 R MUX R IS L IS R TREBLE L TREBLE R BASSI L BASSI R BASSO L BASSO R OUT L OUT R DGND ALC SCL SDA Vs MIC IN1 L IN2 L IN3 L IN4 L MUX L 1 2 3 4 5 6 gt 8 9 D99AU1057 HA12237F BLOCK DIAGRAM _ LL 5 5 y 9 O E E S B N sv 8 28 55 9 5 I 5 E lt BEL a
36. O DISC DISPLAY CONNECTOR LOCKING 801 DOES SLED MOVE YES CHECK PN802 Pin3 4 NO DEFECTIVE PICKUP OR SL SL IC802 OR IC801 DOSE LENSE MOVE UP amp DOWN YES DEFECTIVE PICKUP OR IC802 OR IC801 DEFECTIVE PICKUP OR IC801 OR Q801 DOSE LASER LIGHT YES DOES SPINDLE ROTATE YES NO DEFECTIVE PICK UP OR IC802 OR IC801 NO IS READING OK CHECK PN801 Pin14 15 DEFECTIVE PICKUP OR TA TA IC802 OR IC801 2 4 READING OK CHECK A NO DISC DISPLAY A DOSE SL WAVEFORM APPEAR AT IC802 Pin13 SLED MOTOR WAVE DOSE SLIN WAVEFORM APPEAR AT IC802 Pin5 DRIVE WAVE YES x DEFECTIVE IC801 NO gt DEFECTIVE IC802 NO CHECK PN802 CONNECTOR LINE s DEFECTIVE PN802 CONNECTOR DEFECTIVE PICK UP SLED MOTOR READING OK CHECK B NO DISC DISPLAY DOSE FA WAVEFORM APPEAR AT IC802 Pin16 FOCUS COIL DRIVE WAVE DOSE FAIN WAVEFORM APPEAR AT 802 Pin22 DRIVE WAVE YES x DEFECTIVE IC801 NO gt DEFECTIVE IC802 NO CHECK PN801 CONNECTOR LINE 53 DEFECTIVE PN801 CONNECTOR DEFECTIVE PICK UP FOCUS ACTUATOR READING OK CHECK C NO DISC DISPLAY Q801 VOLTAGE CHECK 1 96V YES CHECK PN801 CONNECTOR LINE NO Q801 EMITTER VOLTAGE CHECK 3 1V O K DEFECTIVE IC801 YES LASER CONTROL VOLTAGE CHECK DEFECTIVE IC801 IC801 Pin 18 2 45 NO gt DEFECTIV
37. WVCC 12 mi PRE LOADING CH 1 CH2 L 1 Bi 210K 10 1 2 3 4 5 6 7 8 9 10 11 12 18 14 PIN CONFIGURATION FWD REV LDCONT PS IN 1 PREVCC POWVCC 12 VOL VOL 02 VO2 4 VO 1 VO 1 2 21 BIAS OPIN4 OPIN4 OPOUTA OPIN3 OPOUT3 MUTE POWVCC34 GND VO3 4 VO4 PIN DESCRIPTION PIN No Pin Name Description 1 FWD Input for loading forward 2 REV Input for loading reverse 3 LDCONT Output control terminal for loading 4 PS Control terminal for power saving mode 5 Input 1 of CHI 6 IN2 Input 2 of CH2 7 PREVCC Pre and loading unit power supply input terminal 8 POWVCCI2 Power unit power supply input terminal CH1 CH2 9 VOL Inverted output of loading 10 VOL Not inverted output of loading 11 VO2 Inverted output of CH2 12 VO2 Not inverted output of CH2 13 VO1 Inverted output of CH1 14 VOI Not inverted output of CH1 15 4 Not inverted output of CH4 16 4 Inverted output of 4 17 Not inverted output of CH3 18 Inverted output of CH3 19 GND Substrate ground 20 POWVCC34 Power unit power supply input terminal CH3 CH4 21 MUTE Input for mute control 22 OPOUT3 Output of CH3 OP ANP 23 OPIN3
38. d E 3 90185 91185 8 x NAS 09 zones 1020 7160 0 1 1733835 R 0185 5 y o 8 s 1dB 300W EEE 90185 js 3930 8 1 13535 2 3571 094 Ll i N 5 230 dO1S 13S34 3 300N_3dy gt 5 8855 D He am a TTT 8 5 gjej 2852 8 9 56 8 2 34 2 33 POWER SCHEMATIC DIAGRAM FHA Ff T400m L 250V 400mA 280V e 1 0204 0202 JACK201 88 44878 coro 08402 0840 0203 Oe RR STA m 15402 1No402 9 T201 t LPC LM440 TRANSFORMER gu 10 00 1 FHL MAIN 8 Ja 4 2 BATTERY B F2 GND 3 4 GNO TAAL 0 4 PN202 POWER BOARD 445y 230 454230 J201 x x J202 x o x LPC LM440 445 POWER 2003 12 16 E S 2 35 2 36 e DECK SCHEMATIC DIAGRAM
39. ecause they will damage the lens Take care not to use too much of this alcohol on the swab and do not allow the alcohol to get inside the pick up 1 2 NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1 Preparations 1 Compact disc players incorporate a great many ICs as well as the pick up laser diode These components are sensitive to and easily affected by static electricity If such static electricity is high voltage components can be damaged and for that reason components should be handled with care 2 The pick up is composed of many optical components and other high precision components Care must be taken therefore to avoid repair or storage where the temperature of humidity is high where strong magnet ism is present or where there is excessive dust 2 Notes for repair 1 Before replacing a component part first disconnect the power supply lead wire from the unit 2 All equipment measuring instruments and tools must be grounded 3 The workbench should be covered with a conductive sheet and grounded When removing the laser pick up from its conductive bag do not place the pick up on the bag This is because there is the possibility of damage by static electricity 4 To prevent AC leakage the metal part of the soldering iron should be grounded 5 Workers should be grounded by an armband 1M 9 6 Care should be taken not to permit the laser pick up to come in contact with clothing in order to prevent sta tic elec
40. f 1 1 U 1 Ke O IG o 4 t Ju 1 12 A 1 1 1 1 Q 1 1 I 6 91 fot 1 1 181 1 1 g pras j 323 precuaTony Bt 1 TUNER POWER 0 f 131 oy 0707 STAND BY on orr L BATTERY 16506 E f 9 fC CIRCUIT 1 CIRCUIT CIRCUIT I CIRCUIT O 1 3 3V REGULATOR Pa d 1 i 1 1 e LPC LM440 445 BLOCK 2005 04 21 2 27 2 28 SCHEMATIC DIAGRAMS MAIN SCHEMATIC DIAGRAM
41. heck Q271 Q272 Check 901 PIN10 Mode1 MAIN Vcc Check IC 901 PIN11 SVR MAIN Vcc 2 YES OUTPUT O K 2 SUB WOOFER Check Signal in NO Check Low pass NO Check IC802 Pin 5 IC901 Pin9 Pin12 Block IC802 gt Check IC802 Pin 8 Check IC 901 Pin5 Mode2 Check Micom port MAIN Vcc 97 Mode2 control HIGH OUTPUT O K Check Signal in NO Check the Q601 Q651 IC601Pin3 Pin5 Check IC601 Pin8 6 8V If head phone jack is inserted 1 Micom port 48 H P IN Low pos 2 Micom port 9 AMUTE High 3 IC901 Pin 5 amp Pin10 Low OUTPUT O K 2 16 J INTERAL BLOCK DIAGRAM OF ICs TDA8947J BLOCK DIAGRAM INT OUT1 IN2 OUT2 IN3 OUTS IN4 OUT4 Short circuit and temperature protection On de2 2 17 PINNING INFORMATION OUT1 GND1 OUT2 Mode 2 IN2 6 SGND IN1 8 TDA8947J IN3 9 Mode 1 SVR IN4 CIV OUT3 GND2 Vcc2 OUT4 Table 3 Pin description Symbol Pin Description OUT1 1 non inverted loudspeaker terminal 1 GND1 2 ground channel 1 Voci 3 supply voltage channel 1 OUT2 4 inverted loudspeaker terminal 2 Mode 2 5 mode selection of subwoofer channel 3 4 IN2 6 input 2 SGND 7 signal ground IN1 8 input 1 IN3 9 input 3 Mode 1 10 mode selection input standby mute operating SVR 11 half supply voltage decoupling ripple rejection I
42. icom 35 36 37 38 Check YES 2 13 TAPE TROUBLESHOOTING 1 Play Check the power supplying to NO Check the DC output NO Check the high IC401 Pin16 Q241 C 101 Pin92 or Q242 B YES Check the pattern Q405 C Voltage Check 8 5V PN402 Pin 3 Voltage Check 12 5V Q407 Q489 Check 402 Pin1 Pin2 Check Normal Speed Q483 10 Q481 10 Q485 Q487 C Voltage Check When solenoid is drived Check the patternCheck PB MUTE Low REC MUTE High REC BIAS Low NO Check the signal output of Replace IC401 Pin 5 26 Cusen ie beck Mecha the Deck Mecha YES Replace the 201 2 14 2 REC Check signal out of ME Check signal in from IC301 NO Replace IC301 401 Pin 10 21 1 301 Pin 7 22 P YES Replace IC401 MES Check the signal of 401 Pin 7 24 OR Pattern Is the normal NO Check REC B Voltage 9V No Check Q211 E Voltage 9V Check the Oscillation of Check Q211 E Q472 E Voltage 9V Check the signal of Check Q211 E R463 R413 or L402 Voltage 9V Pin2 Pin3 Check Q405 Low Check Q405 Low Check REC BIAS High YES Check Mechanism Head or Replace Mechanism 2 15 IC TROUBLESHOOTING 1 2CH L R NO Check Signal in 901 Pin6 Pin8 YES NO Check M Pin12 Check Q252 0253 Check Micom port 99 Mode1 control 0 6V C
43. mpact Storage in conductive bag Drop impact 2 Repair notes 1 The pick up incorporates a strong magnet and so should never be brought close to magnetic materials 2 The pick up should always be handled correctly and carefully taking care to avoid external pressure and impact If it is subjected to strong pressure or impact the result may be an operational malfunction and or damage to the printed circuit board 3 Each and every pick up is already individually adjusted to a high degree of precision and for that reason the adjustment point and installation screws should absolutely never be touched 4 Laser beams may damage the eyes Absolutely never permit laser beams to enter the eyes Also NEVER switch ON the power to the laser output part lens etc of the pick up if it is damaged AY NEVER look directly at the laser beam and don t let contact fingers or other exposed skin 5 Cleaning the lens surface If there is dust on the lens surface the dust should be cleaned away by using an air bush such as used for camera lens The lens is held by a delicate spring When cleaning the lens surface therefore a cotton swab should be used taking care not to distort this Pressure gt I Pressure gt lt Conductive Sheet 6 Never attempt to disassemble the pick up Spring by excess pressure If the lens is extremely dirty apply isopropyl alcohol to the cotton swab Do not use any other liquid cleaners b
44. n generate electrical charges sufficient to damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive materials 7 Immediately before removing the protective material from the leads of a replacement ESD device touch the protective material to the chassis or circuit assembly into which the device will by installed CAUTION BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT AND OBSERVE ALL OTHER SAFETY PRECAUTIONS 8 Minimize bodily motions when handing unpackaged replacement ESD devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gen erate static electricity sufficient to damage an ESD device CAUTION GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED DAN GEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION
45. tricity changes in the clothing to escape from the armband 7 The laser beam from the pick up should NEVER be directly facing the eyes or bare skin Armband Resistor 1 Mohm Resistor 1 Mohm Conductive Sheet 23 3 1 ESD PRECAUTIONS Electrostatically Sensitive Devices ESD Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive Devices ESD Examples of typical ESD devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed for potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ESD devices place the assembly on a conductive sur face such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ESD devices 4 Use only an anti static solder removal device Some solder removal devices not classified as anti static ca
46. y 60B 1kHz 256mv 47k Load 8313 5 _MUX_LCH lt I a Cale 222 fe pm AN m tut ee 1 E TO SHEET a 2 88 301 5 1075 19 S IS e MUX RCH lt ANN 8 2k 0 1161 2 mA 8333 TY 8812 813 W 3 ACH C 30K SN 15 Se Ma 3 5 fk BF RB01 Bu go OPEN DRAIN gt p NE 44 AE 5 5 5 By md 3 B mS a gt vOL SOLKCJ ave 2 5810 2 aaas SFL EL 12 53 0 00 VOL SDA lt T 85 4 W L 8 10uF tev 2 3 s aa MODE2 CONTROL 0257 WOOFER_MUTE 8247 4 02058 25 R248 1K je ual 2K mm 2 fea 7 2 Kg HEADPHONE I K 5 xo MODE 4 pea D213 4 Lit L 00020700018 e a CD POWER 714002 5 _ ERE eX RLS Pes Fi 5 2 B 84805 ASS yoo lt gt i 0265 KTA1271 POWER SENSE 1 mua 0212 1551331 POWER SENSE MAIN POWER J 103203 BX DC ON gt 27 BS m t 815 0257 gt 8 0263 R264 TU POWER 58 S E Sa 1 le 435mA 460mA PLAY mn 6 Re18 5 1 Ie 700mA MOTOR START amp STOP amp 8 e sea 1 eI 100 ibs 0258 xxx s SFS Do 1 1 Ic 170mA STOP L 87 lt I ez 4 H 1 Ic 210mA PLAY 2 gt sq A SE a
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