sanyo_dc-bm300.pdf

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1、Service Manual FILE NO. REFERENCE No. Micro Component SystemDC-BM300 (XE) PRODUCT CODE No. 129 617 00 This service manual consists of DC-BM300U/XE (Main unit : 129 618 00) and SX-BM300/XE (Speaker system : 165 043 00). Contents Specifications .1 System connections .1 What to do if .2 Laser beam safe

2、ty precaution.2 CD pick-up maintenance.2 Tape adjustments .3 Tuner adjustments .4 Exploded view (Cabinet 3,000Hz) into the DECK. 2. Press the PLAY button. . 3. Adjust a hole on the motor bottom so that a frequency counter reading of 3,000 5Hz is obtained.See Fig.2. 4. Press the STOP button, and ejec

3、t the test tape. ItemTake-up TorqueBack tentionPull tention Test Cassette PLAY : TW2111A(FWD) PLAY : TW2121A(REV) F.FWD / REW : TW2231 PLAY : TW2111A(FWD) PLAY : TW2121A(REV) Driving power cassette: TW-2412(PLAY) TW-2422(REV.PLAY) PLAY/REV.3065grcm26grcm50grcm F.FWD70140grcm _ REW70140grcm _ hole fo

4、r adjustment - 4 - 1. FM StepAdjustingConnectionSGAdjustmentRemark CircuitInputOutputFrequency 1Alignment voltage IC231 3-22pin(TP24,25) is 0.000.05V 2 -Connect Digital DC voltmeter to87.5MHZL21031.000.05V - TP11(H), TP12(E).108.0MHZ-5.100.50V check only 2. AM StepAdjustingConnectionSGAdjustmentRema

5、rk CircuitInputOutputFrequency 1 2-Connect Digital DC voltmeter to522kHZL2153 1.000.05V - TP11(H )and TP12(E).1611kHZ-7.300.50V check only 3Connect to VTVM603KHZL2151 point TP13(L)or TP14(R) and TP15(E). 1404kHZCT252 IF(0V) Adjustment XF233 Maximum 98MHzFM Antenna SG=60dBuV/EMF IF Adjustment Connect

6、 to VTVM point TP13(L)or TP14(R) and TP15(E). Alignment voltage IC231 3-22pin is 0.000.05V Cover Voltage Cover Voltage Tracking T2002 MaximumLOOP ANT 450KHZ at 999kHz LOOP ANT E 1324 12 1 1 E E E E E EB B C C BC X2451 C2457 L2151 L2153 D2466 L2451 C2451 C2301 XF233 D2103 J2507 D2153 Q2451 XF221 XF22

7、2 C2321 C2305 C2328 C2327 C2307 C2317 T2002 J2502 C2303 J2604 J2124 D2451 TCLK T-DOUT TCE D2151 J2603 D2456 C2116 XF231 L_CH R_CH +8.5V GND J2501 J2129 J2500 IC231 J2506 J2118 J2104 R2109 VT J2503 CN202 CN201 XF211 IC211 C2306 J2113 J2123 L2104 D2102 L2103 C2311 C2313 J2126 J2116 J2120 J2105 J2107 J

8、2108 J2112 D2452 C2452 J2121 J2125 J2128 J2127 J2122 J2119 J2505 D2101 L2102 J2504 Q2201 J2115 J2117 J2609 J2114 J2508 J2110 J2111 J2608 J2607 J2606 J2605 J2109 J2602 J2101 J2102 J2103 J2601 J2600 J2100 D2453 CT252 J2610 TDO J2106 C2901 D2301 CN445 Q4410 D4960 Q4963 Q4962 Q4961 Q4960 IC443 C4702 Q47

9、00 C4603 L4602 C4602 J4503 J4605 J4502 J4305 J4304 J4306 J4311 J4307 J4302 J4308 J4309 R4602 J4301 J4608 (R)REC SW PACK SW NC (F)REC SW PLUNGER INI SW MOTOR PH1 GND REEL D4406 J4604 IC241 C2461 R2460 R2459 C2456 R2453 R2452 C2455 C2154 R2131 C2152 C2151 R2149 R2458 R2151 C2453C2454 R2455 C2304 R2304

10、 R2305 R2306 C2320 C2319 C2309 C2316 R2307 R2309 R2308 C2308 C2324 C2315 C2310 C2312 R2302 R2454 R2148 R2801 R2701 R2301 R2311 R2461 R2462 R2463 R2464 R2100 R2712 R2812 C2314 C2302 C2462 C2322 C2463 C2464 C2318 R2106 R2312 C2115 C2323 C2101 C2105 C2106 R2101 C2103 C2104 C2107 R2102R2107 C2110 C2111

11、R2108 C2112 R2103 C2114 C2113 R2110 R2201 R2204 R2203R2202 C2203 R2205 C2109 R2105 C2102 C2141 C2902 R4403 R4402 R4400R4401 R4965 R4966 R4604 C4604 R4603 R4825 R4406 CT252L2151 TP11 TP12TP24 TP25 TP13TP14TP15L2153L2103T2002 IC231 XF233 TUNER ADJUSTMENTS Use a plastic screw driver for adjustments. Sp

12、eaker impedance : 4 ohm TUNING FM : 87.5 - 108MHz AM : 522 - 1611 kHz (9 kHz step) 520 - 1610 kHz (10 kHz step) Antenna : 75 unbalanced , Modulation : 1 kHz Dev. : ?22.5kHz RF LeveL: dBuV EMF Output Level : about 30mV at TP13, TP14, TP15 SG Modulation : 1kHz, 30% Antenna : IRE Loop RF Level : dBuV E

13、MF Output Level : about 30mV at TP13, TP14, TP15 - 5 - EXPLODED VIEW (CABINET Irregular)61S29/PD5OFL Segment output (P4) 12RESRESETISystem Reset pin62S30/PD6OFL Segment output (P3) 13XT1/P74XT1ISub clock junction pin63S31/PD7OFL Segment output (P2) 14XT2/P75XT2OSub clock junction pin64S32/PE0OFL Seg

14、ment output (P1) 15XSS1VSS65S33/PE1OOpen 16CF1CF1IMain clock junction pin66S34/PE2OOpen 17CF2CF2OMain clock junction pin67S35/PE3SEL_POE_RYIPower Relay Function Select (High; None) 18VDD1VDD68S36/PE4V_CHKIDetection for Power Failure (Low; Power Failure) 19P80/AN0KEY0I69S37/PE5C2FIDSP C2F input 20P81

15、/AN1KEY1I70S38/PE6REELIReel Rotor Signal Input 21P82/AN2SW0ICD; Limit SW, Open SW, Close SW71S39/PE7IConnect to GND 22P83/AN3IConnect to GND72VDD4VDDPower(+5V) 23P84/AN4IConnect to GND73S40/PF0G_REVSIFailure record SW (Tape B side) Input 24P85/AN5IConnect to GND74S41/PF1G_FWDIFailure record SW (Tape

16、 A side) Input 25P86/AN6IConnect to GND75S42/PF2PACKITape Pack Check Input 26P87/AN7IConnect to GND76S43/PF3TAPE_INIITape Deck Initialize 27P71/INT1WRQICD DSP interface(sub Q Request)77S44/PF4POW_RYOPower Relay Control Output (High; Relay On) 28P72/INT2/T0INRDS INISerial date input for RDS IC78S45/P

17、F5SP_RYOSpeaker Relay Control Output (High; Relay On) 29P73/INT3/T0INIRIRemote control input79S46/PF6LEDOLight for CD 30S0/T0OOpen80S47/PF7MoterOTape Moter Output (High; Moter On) 31S1/T1OOpen81S48/PG0Tape Play PLOTape Play Plunger Output (High; Plunger On) 32S2/T2OOpen82S49/PG1P_CONOPower control (

18、High; Power On) 33S3/T3OOpen83S50/PG2OSCOControl for Oscillation of Tape On/Off (High; Oscillation) 34S4/T4OOpen84S51/PG3PRE_MUTEOPre Amp Mute Output (High; Mute On) 35S5/T5OOpen85P00MAIN_MUTEOPower Amp Mute Output (Low; Mute on) 36S6/T6OFL digit output (10G)86P01SURROUNDOSurround Output Open 37S7/T

19、7OFL digit output (9G)87P02DSP_RESETOReset Signal for CD DSP 38S8/T8OFL digit output (8G)88P03CLK_SHIFTOMain clock shift 39S9/T9OFL digit output (7G)89VSS2VSSPower (GND) 40S10/T10OFL digit output (6G)90VDD2VDDPower (+5V) 41S11/T11OFL digit output (5G)91P04BEATOBeat CCL Control 42S12/T12OFL digit out

20、put (4G)92P05R_MuteOTape Recording Mute (High; Mute On) 43S13/T13OFL digit output (3G)93P06TRY_OPENOTrey Open Control Output 44S14/T14OFL digit output (2G)94P07TRY_CLOSEOTREY Close Control Output 45S15/T15OFL digit output (1G)95P10/S00COINOCD_DSP interface(command data output) 46VDD3VDD96P11/S10/SB0

21、SQOUTICD_DSP interface(SubQ data input) 47S16/PC0OFL Segment output (P17)97P12/SCK0CQCKOCD_DSP interface(clock) 48S17/PC1OFL Segment output (P16)98P13/S01VD_GNDOGND control output for micon power check 49S18/PC2OFL Segment output (P15)99P14/S11/SB1DRFIDRF signal input 50S19/PC3OFL Segment output (P1

22、4)100P15/SCK1RWCOCD_DSP interface(command latch) 14523 IC443 BA7755A (Head Switch) 5 7 9 11 16 2 3 10 8 4 MUTE/ ST-BY IN (L) IN (R) IN- (L) IN- (R) GND OUT (L) OUT (R) -Vs +Vs IC442 TDA7265 (Stereo Amplifier) - 14 - FL DISPLAY DESCRIPTION FL601 (2G9G) 1G2G3G4G5G6G7G8G9G10G P1 P2 P3 P4 P5 P6 P7 P8 P9

23、 P10 P11 P12 P13 P14 P15 P16 P17 a b f h j k g m - c e p r n d - a b f h j k g m - c e p r n d - a b f h j k g m - c e p r n d - a b f h j k g m - c e p r n d - a b f h j k g m - c e p r n d - a b f h j k g m col c e p r n d Dp a b f h j k g m - c e p r n d - a b f h j k g m - c e p r n d - 10G9G8G7

24、G6G5G4G3G2G1G PIN No. CONNECTION 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 F F NP 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G NX NX P17 P16 P15 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 NP F F PIN No. CONNECTION 351 a b f h j k pn d r c e gm Dp col - - -

25、 - - - - (1) (2) (3) - 15 - E E C1303 C1773 C1308 J1405 C1319 Q1301 C1301 C1333 C1330 C1329 D1480 L1451 C1457 C1981 C1783 M- M+ OP GND CL SL- SL+ LIMIT GND SP+ SP- C1401 C1339 D1371 D1601 D1981 C1335 J1515 IC132 R1371 C1403 CD_R CD_L AGND DGND +BM J1511 J1317 J1408 J1407 J1406 J1514 T002 94V-0 1AD4B

26、10D1260B C1373 CN111 J1310 J1512 J1321 J1506 J1401 J1402 J1508 DRF COI SQO RWC RES WRQ CQK GND C2F SW OPN CLS COM E D A MD LD F+ F- B F C VR GND T- T+ CN113 CN114 J1308 Q1401PR101 400 630 PR132 X1451 J1307 J1306 J1304 J1314 J1500 C1338 C1317 J1510 C1320 J1409 J1303 J1313 J1415 J1320 J1318 J1319 J131

27、5 J1403 J1404 J1301 J1302 J1300 J1311 J1312 J1305 J1309 J1400 J1504 J1505 J1509 J1410 J1513 J1414 J1413 J1412 J1411 J1507 J1501 J1502 IC103 CN122 J1316 J1503 RF LA9241M LC78622NE CN123 J1518 J1517 C1451 R1454 C1452 R1455 C1456 R1456 R1343 R1336 R1335 R1480 C1480 C1983 R1981 C1491 R1465 C1470 R1475 C

28、1475 C1468 C1467 C1466 C1471R1453 R1304 R1303 R1305 C1304 R1309 C1309 C1305 C1341 R1308 R1311 C1310 R1310 R1312 C1315 R1318 C1314 R1317 R1315 R1314 C1313 C 1312 R1313 R1503 R1506 C1372 C1371 R1373 R1372 R1337 C1324 C1326 R1341 R1333 R1332C1325 C1322 C1346 C1323 C1782 R1783 R1781 C1772 R1773 R1771 R1

29、328 R1329 R1320 C1316 R1324 C1318 R1325R1327 R1326 C1472 R1331 R1472 R1473 C1337 R1504 R1501 R1507 C1497 C1481 R1334 R1338 C1332 R1461 C1469 R1464R1463 R1462 R1302 C1302 R1301 C1336 C1331 C1334 C1321 R1330 IC101 IC102 C1496 C1311 WIRING DIAGRAM (CD) This is a basic wiring diagram. - 17 - 16 - SCHEMA

30、TIC DIAGRAM (CD) REF REF FSS CLK TBC FSC CLK REF REF 8CM 12CM FOADJ FSTA STOP REF GEN FSTA VR+0.3V REF FSS FSC TOFF REF REF REF STOP TOSTA TOADJ GEN TBC LATCH PONRST DAT CL CE SLOF 8/12CM FSTA LASER 2FREQ TOSTA FOSTA EFBAL JP- JP+ TGL TOFF TES HFL SLOF CV- CV+ RF REF REF FOCS THLD DEF CL DAT CE DRF

31、S.DVCC VCC REF DRF HFL VDRF VHFL DEF GAIN VCA PH4 BH2 PH1 BH1 RF LASER VPPC RFVCC FE1 REF VCA REF REF REF REF VCA BAL BALREF BPL VCA VCC Q Ra D S.Q.R SLOFSLOF SLOF TO REF REF SPOF REF JP+ JP JP- CV+ CV- REF REF FE1 REF FOFF REF FSTA FSERCH REF REF JP TOFF2 REF TGHI TGLI THLDI THLDI TGLI TGHI OR GEN

32、WCOMP THLD DEF TGL THLDI TGLI OR AND REF TES SHOCK:WCOMP -HIST.COMP CD_R A_GND CD_L D_GND +8.5V C1480 D1480 R1461 C1313 C1466 R1504 R1503 R1501 R1337 CN111 C1333 R1473 R1472 CN113 C1470 C1481 C1491 C1457 C1335 C1472 R1332 C1403 C1346 C1326 R1341 C1981 C1983 R1456 C1456 C1452 R1455 C1451R1454 C1341 R

33、1475 C1475 R1343 IC101 C1339 C1337 C1338 C1336 C1319 R1329 C1320 R1328 C1317 R1326 R1325 C1318 R1324 C1316 C1315 R1318 R1320 R1317 R1315 R1313 C1312 R1314 C1310 R1310 R1311 C1308 C1305 R1304 C1303 R1336 R1453 C1331 X1451 R1335 L1451 C1468 C1467 C1469 R1464 R1465 R1463 R1462 C1329 C1471 R1308 C1330 C

34、1401 R1312 IC102 C1332 C1325 C1301 R1301 R1302 C1309 R1309 C1302 R1305 C1304 R1303 C1323 R1333 R1334 C1334 C1321 R1331 R1330 Q1401 C1324 C1783 R1327 C1773 C1772C1782 R1783R1773 R1781 R1771 IC132 D1371 C1371 R1371 D1601 C1372 C1314 CN114 R1372 R1373 CN123 R1981 R1507 R1506 D1981 Q1301 PR101 R1338 R14

35、80 C1497 PR132 C1373 C1322 IC103 C1496 C1311 560P 1SS133 560 0.1 0.01 1.5K 3.3K 1.5K 6.8K 0.22;50 100K 4.7K 68P 100P 0.01 10;50 10;50 0.01 15K 470;10 33P 1000P 56K 100;6.3 0.01 1.2K 0.01 0.1 68K 0.1680 3300P 560 68P 100K LA9241M 10;50 0.01 10;50 0.01 4.7;50 10K 22;506.8K 0.22;50 1K56K 100P 33K 3300P

36、 0.018 1.5K 8.2K 68K 15K 22K 1000P 22K 0.1 15K 100K 0.22;50 330P 6.8K 0.22;50 330 2.7K 0.01 16.93M 10K 10;K 68P 68P 100P 1K 560 560 560 4.7;50 68P 27K 10;50 470;6.3 6.8K LC78622NE 0.047 0.01 47;25 1K 10 0.047 330 1000P 2.2K 0.033 100K 18P 12K1K 0.01 3300P 220K 220K KTA1273 0.033 10;50 56K 10;50 1000

37、P1000P 100K100K 1K 1K LB1641 MTZJ4.7B 0.01 15 1A3-I 0.1 0.015 1K 1K 470 4.7K 12K MTZJ5.1B 2SB810 400mA 150K 560K 0.01 630mA 100/16 1P MM1469XH 0.01 0.01 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 32313029282726252423222120191817 333435363738394041424344454

38、64748 64636261605958575655545352515049 48474645444342414039383736353433 16151413121110987654321 49505152535455565758596061626364 32313029282726252423222120191817 12345678910 1 2 3 4 5 1 2 3 4 5 28 27 26 25 24 23 2221 20 19 18 17 16 15 1413121110987654321 CD-L CD-R DSP_RESET RWC DRF WRQ RWC SQOUT COI

39、N CQCK A.GND WRQ DSP_RESET SQOUT COIN CQCK DRF CD-R CD-L A.GND E C D F (SLED +) (SLED -) (D-MUTE) FSX CONT2 CONT1 TEST2 DVSS TB F E FIN1 FIN2 FSS VCC1 LDS LDD BH1 PH1 LF2 VR REFI VCC2 DRF CE DAT CL CLK DEF NC TBC FSC DGND SLI SLC RFS- RFSM CV+ CV- SLOF TES HFL TOFF TGL JP+ JP- SL+ SL- SLD SLEQ SPD S

40、P- SPG SPI SP AGND FE- FE FA- FA FD- FD TO JP TD TD- TA TH SCH TESI TE TE- VVSS PDO ISET TAI DEFI REST XOUT XIN TEST5 TST11 4.2M 16M CS TEST1 CQCK COIN SQOUT RWC WRQ PW SBCK SFSY XVSS EFLG SBSY XVDD MUTER RVDD RCHO RVSS LVSS LCHO LVDD MUTEL NC TEST4 TEST3 DOUT C2F EMPH CONT5 CONT4 JP- JP+ DVDD CONT3

41、 TGL TOFF FSEQ PCK TES HFL V/P CLV- CLV+ FR EFMIN EFMO VVDD VC TE FE RF LIMIT GND F- F+ T+ T- B GND SL+ SP+ SL- VR LD SP- A MD TO FRONT PWB E F D C BASE MECHANISM DA11 LDMD GND MD LD VR T+ T- F- F+ A B LIMIT SW SPINDLE MOTOR SLED MOTOR PICK UP SF-P101N OPN/CLS (2W) COMMON M+ M- OPEN CLOSE GND SHORT

42、LAND TRCKING COIL FOCUS COIL M M SVR M COM SL- SL+ LIMIT GND SP+ SP- CD MECHANISM CD11FTA M- M+ OPEN GND CLOSE OPEN SW CLOSE SW LOADING MOTOR CN122 GND RESET OPEN C2F WRQ CLOSE SW COIN SQOUT CQCK RWC DRF 5V REG VC VDD VDD MUTE IN IN ININ + + - - - + 4.3 4.9 3.6 1.6 3.6 4.2 2.5 2.5 2.5 2.5 2.5 2.5 2.

43、5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 0.0 0.0 2.2 2.5 2.2 2.5 2.5 2.5 2.5 2.5 2.9 2.5 2.5 2.5 2.5 2.5 2.3 2.3 2.3 2.3 0.0 0.0 0.0 0.0 4.8 4.8 0.0 4.8 0.0 4.8 2.4 1.6 2.4 2.4 0.0 0.0 2.5 2.5 2.5 2.

44、5 0.0 0.0 4.9 4.9 0.2 0.0 3.6 4.2 2.2 2.2 2.5 1.0 2.5 1.0 2.5 2.5 2.5 2.5 4.9 4.9 0.0 0.0 4.8 0.0 5.0 5.0 8.0 8.2 8.0 8.4 0.0 0.0 0.0 0.0 1.5 1.5 4.8 4.8 0.0 0.0 2.3 2.3 0.0 0.0 0.0 4.8 0.0 4.8 4.8 4.8 0.0 0.0 0.0 0.0 4.8 4.8 4.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.7 5.

45、1 5.1 2.1 2.1 0.0 0.0 2.1 2.1 5.1 5.1 0.0 4.7 4.8 4.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.8 4.8 PLAY STOP This is a basic schematic diagram. PRODUCT SAFETY NOTICE Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol ! ! ! in the parts li

46、st and the schematic diagram designated components in which safety can be of special significance. When replacing a component identified by ! ! ! , use only the replacement parts designated, or parts with the same ratings of resistance, wattage or voltage that are designated in the parts list in thi

47、s manual. Leakage-current or resistance measurements must be made to determine that exposed parts are acceptably insulated from the supply circuit before returning the product to the customer. - 19 - 18 - This is a basic schematic diagram. SCHEMATIC DIAGRAM (FRONT) GND +B +8.5V +5.6V REC_MUTE BEAT RESET VF_CE MAIN_MUTE RECORDING ST_BY PLUNGER GND TU_CE MOTOR CN P_CON INI_SW PACK_SW (F)REC_SW (R)REC_SW V_CHECK REEL TU_DI D_CLK D_OUT FL1 FL2 -28V NC GND +B FROM FRONT TO CD SOCKET PWB DRF RWC CQCK SQOUT COIN LIM/OPEN/CLOSE WRQ C2F TRAY_OPEN