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Sanyo DC-BM500 Service Manual

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Service Manual
Contents
Specifications ................................................................... 1
System connections ......................................................... 1
Laser beam safety precaution .......................................... 2
CD player adjustments ..................................................... 2
CD pick-up maintenance .................................................. 2
Tape adjustments ............................................................ 3
What to do if ..................................................................... 3
Tuner adjustments ........................................................... 4
(Cabinet & Chassis) ...................................................... 5
(Cabinet & Chassis) ...................................................... 6
(Tape mechanism) ........................................................ 9
IC block diagram & description ........................................ 10
This service manual consists of "DC-BM500U/AU" (Main unit : 129 615 02) and
"SX-BM500L /KR" (Speaker system : 165 041 01) & "DC-BM500R/KR" (Speaker system : 165 042 01).
Micro Component System
STANDBY
/ ON
FMMODE
MEMORY
F U L L L O G I C C O N T R O L / A U T O R E V E R S E
FUNCTION
M U L T I F U N C T I O N D I S P L A Y
BASSXPANDER
PRESET-
PRESET+
M I C R O C O M P O N E N T S Y S T E M
PHONES
FILE NO.
DC-BM500
EJECT
CLOCK/TIMER
TUNING
TUNING -
TUNER/BAND
VOLUME
-
+
SOUNDPRESET
/
OPEN/CLOSE
PRODUCT CODE No.
129 614 02
FL display description ...................................................... 14
(CD) ............................................................................... 16
(FRONT) ....................................................................... 18
(TUNER) ....................................................................... 22
(AMPLIFIER) ................................................................. 26
(CD) ............................................................................... 15
(FRONT) ....................................................................... 20
(TUNER) ....................................................................... 24
(POWER AMPLIFIER & PRE AMPLIFIER) .................. 28
(CD TRAY LED & POWER SUPPLY ) .......................... 30
Wiring connection ............................................................ 31
REFERENCE No.
(AU)
SM
5810313

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  Summary of Contents for Sanyo DC-BM500

  • Page 1: Table Of Contents

    FILE NO. Service Manual DC-BM500 Micro Component System (AU) EJECT STANDBY CLOCK/TIMER / ON TUNING FMMODE TUNING - MEMORY F U L L L O G I C C O N T R O L / A U T O R E V E R S E...
  • Page 2: Specifications

    SPECIFICATIONS Tuner General Reception frequency: Output power ......20 W x 2 FM : 87.5 - 108.0 MHz (at 6 ohms, 10% distortion) AM : 522 - 1710 kHz (9 kHz steps) Inputs ........VIDEO IN : 500 mV / 50k ohms 520 - 1710 kHz (10 kHz step) Outputs ........
  • Page 3: Laser Beam Safety Precaution

    Clean a lens with swab of the cotton which moistened it with alcohol, cleaning paper or cleaning disc appointed. Specified cleaning disc : LC-1 (Part code : 645 026 1961 ..manufactured by SANYO.) Show a clean procedure in the following in reference by swab of cotton.
  • Page 5: Tuner Adjustments

    TUNER ADJUSTMENTS • Use a plastic screw driver for adjustments. • MODE : ST (Stereo) • Speaker impedance : 6 ohm • TUNING FM : 87.5 - 108MHz, 50KHz step AM : 522 - 1710KHz (9KHz step) 520 - 1710KHz (10KHz step) TP25 L2102 TP12...
  • Page 6: Exploded View (Cabinet & Chassis)

    EXPLODED VIEW (CABINET & CHASSIS) N.S.P : Not supplied as service parts. - 5 -...
  • Page 7: Parts List (Cabinet & Chassis)

    PARTS LIST PRODUCT SAFETY NOTICE EACH PRECAUTION IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED WITH THE IEC SYMBOL IN THE PARTS LIST 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 THIS MANUAL.
  • Page 8 PARTS LIST FRONT P.W.BOARD ASSY REF.NO. PART NO. DESCRIPTION 645 006 5958 SWITCH,PUSH 1P-1T REF.NO. PART NO. DESCRIPTION S6216 614 220 5471 SWITCH,TACT 614 319 1605 ASSY,PWB,FRONT(Only Initial) 614 240 1002 SWITCH,TACT BR601 614 318 6991 HOLDER,FL,HOLDER-FL 645 006 5958 SWITCH,PUSH 1P-1T CN601 645 012 5324 SOCKET,FPC 28P,FRONT-AMP S6217...
  • Page 9 PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION 405 019 2708 TR 2SC536-F-NP 405 141 3307 TR KTC3198-GR 405 141 3208 TR KTC3198-Y Q4211 405 019 3804 TR 2SC536-G-NP Q4730 405 019 3804 TR 2SC536-G-NP 405 019 2708 TR 2SC536-F-NP 405 019 2708 TR 2SC536-F-NP 405 141 3208 TR KTC3198-Y 405 141 3208 TR KTC3198-Y...
  • Page 11: Ic Block Diagram & Description

    IC BLOCK DIAGRAM & DESCRIPTION IC101 LA9241ML (Servo Signal Processor) IC132 LB1641L (Bidirectional Motor Driver) Vcc1 BH1 PH1 LF2 VR REF1 Vcc2 DRF CE DAT CL CLK 54 53 VCC2 OUT2 RF DET U-COM INTER FACE PRE- FIN2 DRIVE FIN1 OUT1 DGND RFS-...
  • Page 12 IC BLOCK DIAGRAM & DESCRIPTION IC231 LA1844ML (Tuner System) RF.AMP PILOT DECODER BUFF CANCEL ANTI-BIRDIE P-DET STEREO LEVEL AM/FM COMP S-CURVE BUFF PILOT 304kHz TUNING DRIVE IC241 LC72121M-D (Pll Synthesizer) IC450 LC75342M (2 band equalizer) LSELO LIN LTRE LBASS1 LBASS2 LOUT Vssx REFERENCE...
  • Page 13 IC BLOCK DIAGRAM & DESCRIPTION IC102 LC78622NE (Digital Signal Processor) No. Pin Name I/O Function No. Pin Name I/O Function DEFI I Input terminal for detect signal of defect TEST3 I Test pin. I Input terminal for test. TEST4 I Test pin. O The phase comparison output terminal for - Non connection.
  • Page 14 IC BLOCK DIAGRAM & DESCRIPTION IC601 LC866540A-5Z29(Micro Processor) PIN NAME NAME DESCRIPTION PIN NAME NAME DESCRIPTION P16/BUZ JOG+ I Input JogDial FL drive output power P17/PWM0 JOG- I Input JogDial S20/PC4 O FL Segment output (P13) D_CLK O Serial clock output for Tu/Vol_Func IC S21/PC5 O FL Segment output (P12) D_OUT...
  • Page 15: Fl Display Description

    FL DISPLAY DESCRIPTION FL601 PIN No. CONNECTION P16 P15 PIN No. CONNECTION P14 P13 P12 P11 (2G~9G) - 14 -...
  • Page 16 WIRING DIAGRAM (CD) R1302 J1501 Q1301 C1310 C1309 C1302 R1309 R1310 J1301 CN111 C1301 R1311 C1304 R1464 R1308 R1305 C1332 C1329 J1503 R1463 C1341 R1304 J1504 R1475 C1305 R1303 C1475 R1337 J1401 J1303 R1455 C1468 C1452 C1467 R1341 C1303 C1308 J1304 C1326 C1456...
  • Page 17: Schematic Diagram

    SCHEMATIC DIAGRAM (CD) R1461 DSP_RESET R1462 CQCK R1463 COIN R1475 SQOUT R1465 PICK UP C1335 R1453 SF-P101N 10;50 Q1301 2.7K C1491 2SB810 0.01 COMMON IC101 LA9241M DEFI EFLG FIN2 C1302 1000P SBSY S.DVCC R1337 C1451 R1454 RFVCC 6.8K C1773 R1771 LASER FIN1 XVSS...
  • Page 18 SCHEMATIC DIAGRAM (FRONT) D6010 L6010 1SS133 10/K C6118 100P C6117 100P C6116 100P FL601 S6001 C6111 100P 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 C6110 100P MOTOR JOG+ MOTOR JOG-...
  • Page 19: Wiring Diagram

    WIRING DIAGRAM (FRONT) STAND_BY_LED S6119 S6218 POWER CLOCK/TIMER R6257 R6158 S6217 S6118 TU_UP FM_MODE R6256 R6157 S6216 S6117 TU_DOWN MEMORY R6156 R6255 S6116 S6215 FUNCTION TUNER/BAND CN604 +BGND TO CD_TRAY_LED 1AD4B10D0661A L6010 D6010 J6300 C6012 J6102 J6100 X6101 X6102 Q6108 T002 94V-0 J6104 S6001...
  • Page 20 SCHEMATIC DIAGRAM (TUNER) IC211 TA8176S T2002 XF201 C2188 R2306 XF231 0.01 R2201 C2306 XF221 XF222 1;50 2.7K R2111 C2322 XF233 C2123 1000P C2305 0.47;50 0.01 C2321 1;50 C2105 R2104 100K 1000P C2101 1000P L2101 R2301 CN201 TERMINAL FM IF AM MIX AM IF FM DET MUTE...
  • Page 21 WIRING DIAGRAM (TUNER) CN201 1AD4B10D0652C XF201 T002 94V-0 R2111 C2112 IC211 C2109 C2121 J2203 C2122 C2103 C2188 L2103 J2205 C2453 IC241 LC72121M C2123 R2113 R2106 C2104 J2207 C2101 C2454 C2451 J2208 +5.6V C2480 J2301 FRT_GND R2455 R2104 J2303 L2101 L2102 R2452 Q2900 J2212...
  • Page 22 SCHEMATIC DIAGRAM (AMPLIFIER) FUNCTION PIN5 VOLTAGE +VS = REF ST-BY CD STOP -4.2V CD PLAY DECK -9.0V TUNER VIDEO R4545 4.7K TDA7265 R4670 R4544 IC440 R4980 CD_L CN442 CN452 R-OUT R4543 4.7K TU_L R4542 C4670 L-OUT 560P AUX_L R4990 Q4610 -20.5V 19.6V R4541...
  • Page 23: (Power Amplifier & Pre Amplifier)

    WIRING DIAGRAM (POWER AMPLIFIER & PRE AMPLIFIER) POWER AMPLIFIER P.W.BOARD PRE AMPLIFIER P.W.BOARD R4212 R4433 C4441 Q4212 R4443 R4441 Q4210 Q4222 R4435 R4440 R4445 C4431 R4442 IC440 R4431 C4440 J4300 J4100 Q4211 R4430 J4200 J4302 R4432 J4301 J4303 C4430 R4211 R4221 CN443CN444 J4201...
  • Page 24: (Cd Tray Led & Power Supply )

    CN601 FL601 (28P) FRONT P.W.B TAPE MECHANISM This is a basic wiring connection. L4000 SANYO Electric Co., Ltd. This is a basic wiring diagram. Osaka, Japan Jun./ '02 BB Printed in Japan - 30 - - 31 - - 31 -...