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Sanyo DC-DA170 Service Manual

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Service Manual
Contents
Specifications ................................................................... 1
System connection ........................................................... 1
Laser beam safety precaution .......................................... 2
CD pick-up maintenance .................................................. 2
CD player adjustments ..................................................... 2
Tape adjustments ............................................................ 3
Tuner adjustments (for UK) .............................................. 4
Tuner adjustments (for XE) .............................................. 5
Exploded view
(Cabinet & Chassis) ...................................................... 6
(Tape mechanism) ........................................................ 12
(Cabinet & Chassis) ...................................................... 7
(Tape mechanism) ........................................................ 12
(CD mechanism) ........................................................... 7
IC block diagram & description ........................................ 13
This service manual consists of "DC-DA170U" (Main unit : 129 960 00 for UK, 129 960 01
for XE) and "SX-DA70" (Speaker system : 165 028 00 for UK, 129 028 01 for XE).
Micro Component System
Y OFF Z ON
MULTI FUNCTION DISPLAY
TUNER/ BAND
VOLUME
FUNCTION
PRESET
PHONES
MEMORY
DOWN
UP
170
DA
M I C R O C O M P O N E N T S Y S T E M
F U L L A U T O S T O P
REC
PLAY
REW
F FWD
m
a
d
c
(CD) ............................................................................... 16
(TUNER for UK) ............................................................ 18
(TUNER for XE) ............................................................ 22
(FRONT for UK) ............................................................ 26
(FRONT for XE) ............................................................ 30
(AMPLIFIER for UK) ...................................................... 34
(AMPLIFIER forXE) ....................................................... 38
(TUNER for UK) ............................................................ 20
(TUNER for XE) ............................................................ 24
(FRONT + CD for UK) ................................................... 28
(FRONT + CD for XE) ................................................... 32
(AMPLIFIER for UK) ...................................................... 36
(AMPLIFIER for XE) ...................................................... 40
(POWER TRANSFORMER) ........................................ 42
IC & Transistor voltages ................................................... 43
LCD display description ................................................... 44
Wiring connection ............................................................ 45
FILE NO.
DC-DA170
i
n
SURROUND
TU UP
c/ e
BASS
XPANDER
TU DOWN
f/ d
SOUND PRESET
PUSH TO CLOSE
STOP/ EJECT
PAUSE
n/q
k
PRODUCT CODE No.
129 601 00 (UK)
129 601 01 (XE)
REFERENCE No.
(UK)
(XE)
SM
5810186

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  Summary of Contents for Sanyo DC-DA170

  • Page 1: Table Of Contents

    FILE NO. Service Manual DC-DA170 Micro Component System (UK) (XE) Y OFF Z ON MULTI FUNCTION DISPLAY TUNER/ BAND VOLUME SURROUND FUNCTION TU UP c/ e BASS PRESET XPANDER PHONES TU DOWN f/ d MEMORY SOUND PRESET DOWN PUSH TO CLOSE...
  • Page 2: Specifications

    SPECIFICATIONS Tuner General Reception frequency ....FM : 87.5 - 108.0 MHz Output power ......4 W x 2 (at 4 ohms, 10% distortion) MW : 522 - 1611 kHz Inputs ........VIDEO IN : 400 mV / 50k ohms LW : 144 - 288 kHz (UK only) 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 4: Tape Adjustments

    CD PLAYER ADJUSTMENTS (2) Checking the "eye" pattern (RF) 1. Switch "ON" the POWER. OSCILLOSCOPE 2. Connect an oscilloscope to TP1 (RF) and TP4 (VC). 3. Load the test disc. (VC) 4. Press the PLAY button. 5. Check to be sure that the "eye" pattern is at the center of waveform and that the diamond shape is clearly defined.
  • Page 5: Parts List

    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.
  • Page 6 PARTS LIST FRONT P.W.BOARD ASSY REF.NO. PART NO. DESCRIPTION S6004 614 220 5471 SWITCH,TACT REF.NO. PART NO. DESCRIPTION 614 240 1002 SWITCH,TACT 614 314 0689 ASSY,PWB FRONT(UK)(Only Initial) 645 006 5958 SWITCH,PUSH 1P-1T 614 316 3411 ASSY,PWB FRONT(XE)(Only Initial) S6005 614 220 5471 SWITCH,TACT BR601 614 314 1204 HOLDER,LCD...
  • Page 7 PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION R1314 401 105 2904 MT-GLAZE 22K JA 1/16W L2002 645 018 0224 COIL,AIR R1315 401 105 1600 MT-GLAZE 15K JA 1/16W L2003 645 031 7859 INDUCTOR,8.2U K R1317 401 105 8203 MT-GLAZE 68K JA 1/16W 645 002 1534 INDUCTOR,8.2U K R1318 401 105 1501 MT-GLAZE 1.5K JA 1/16W...
  • Page 8 PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION R2120 401 105 0504 MT-GLAZE 1K JA 1/16W Q2201 405 151 5209 TR KRA107M R2121 401 105 8104 MT-GLAZE 56K JA 1/16W R2000 401 105 4106 MT-GLAZE 3.3K JA 1/16W R2122 401 105 0702 MT-GLAZE 100K JA 1/16W R2001...
  • Page 9 PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION CN441 614 310 2731 PLUG,2P,POWER 405 011 8609 TR 2SC1740S-S 645 004 2881 PLUG,2P,POWER 405 017 9600 TR 2SC3330-T CN490 645 012 2736 SOCKET,DIP 8P 405 017 9709 TR 2SC3330-U CN491 645 012 5096 SOCKET,FPC 12P Q4905...
  • Page 10: (Tape Mechanism)

    REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION R4836 401 105 5400 MT-GLAZE 47K JA 1/16W R4921 401 105 2102 MT-GLAZE 18K JA 1/16W R4837 401 105 2102 MT-GLAZE 18K JA 1/16W R4922 401 105 1600 MT-GLAZE 15K JA 1/16W R4838 401 105 0504 MT-GLAZE 1K JA 1/16W R4923...
  • Page 11: Ic Block Diagram & Description

    IC BLOCK DIAGRAM & DESCRIPTION IC211 LA1844ML ( Tuner System) IC201 TA8176SN ( FM Front End) (UK ONLY) RF.AMP DECODER PILOT BUFF ANTI-BIRDIE CANCEL P-DET STEREO Buffer MIXER Buffer Local LEVEL AM/FM COMP S-CURVE BUFF PILOT Buffer BUFFE 304kHz TUNING DRIVE BY-PASS BIAS...
  • Page 12 IC BLOCK DIAGRAM & DESCRIPTION IC101 LA9241M (Servo Signal Processor) IC410 BA3314 ( MD Rec. Amplifier) Vcc1 BH1 PH1 VR REF1 Vcc2 DRF CE DAT CL CLK 54 53 RF DET FIN2 FIN1 DGND -com INTER FACE RFS- RF Amp RFSM TESI T.SERVO &...
  • Page 13 IC BLOCK DIAGRAM & DESCRIPTION IC102 LC78622NE (Digital Signal Processor) Pin Name Function Pin Name Function DEFI Input terminal for detect signal of defect TEST3 Test pin. Input terminal for test. TEST4 Test pin. O The phase comparison output terminal for - Non connection.
  • Page 14: Schematic Diagram (Cd)

    SCHEMATIC DIAGRAM (CD) 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.
  • Page 15 SCHEMATIC DIAGRAM (TUNER for UK) 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 16 SCHEMATIC DIAGRAM (TUNER for XE) 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 17 SCHEMATIC DIAGRAM (FRONT for UK) This is a basic schematic diagram. - 26 - - 27 -...
  • Page 18 SCHEMATIC DIAGRAM (FRONT for XE) This is a basic schematic diagram. - 30 - - 31 -...
  • Page 19 SCHEMATIC DIAGRAM (AMP for UK) 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 20 SCHEMATIC DIAGRAM (AMP for XE) 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 21: Wiring Diagram

    WIRING DIAGRAM (POWER) POWER TRANSFORMER P.W.B - 42 -...
  • Page 22: Voltage Table

    VOLTAGE TABLE IC101 LA9241M UNIT:V Pin No. Voltage Pin No. Voltage 0.05 Pin No. Voltage 0.02 0.08 0.25 0.01 0.02 0.17 0.84 0.84 IC102 LC78622 UNIT:V Pin No. Voltage 0.02 0.16 0.02 0.05 Pin No. Voltage 0.01 0.01 Pin No. Voltage 0.23 0.01...
  • Page 23: Lcd Display Description

    LCD DISPLAY DESCRIPTION LCD60 PAD NO. PAD NO. COM1 COM2 COM3 IC.NO. COM1 COM2 COM3 IC.NO. COM1 COM2 COM3 SURR ROCK MONO JAZZ BASS PROG. CLASSIC - 44 -...
  • Page 24: Wiring Connection

    (15P) (8P) CN113 (6P) CN450 (2P) CN452 CN451 POWER SUPPLY P.W.B (15P) TAPE DECK MECHANISM BROWN MOTOR SWITCH R/P HEAD YELLOW (6P) ORANGE CD MECHANISM SANYO Technosound Co., Ltd. Jan. / '01 / 2000 BB Printed in Japan Osaka, Japan...
  • Page 25 TUNER ADJUSTMENTS (for UK) • Use a plastic screw driver for adjustments. • MODE : ST (Stereo) • Speaker impedance : 4 ohm • TUNING FM : 87.5 - 108.0MHz (50kHz step) AM : 522 - 1611KHz (9kHz step) LM : 144 - 288kHz (9kHz step) Standatd Input: 60dB Antenna : 75 unbalanced , Modulation : 1 kHz...
  • Page 26 TUNER ADJUSTMENTS (for XE) • Use a plastic screw driver for adjustments. • MODE : ST (Stereo) • Speaker impedance : 4 ohm • TUNING FM : 87.5 - 108.0MHz (50kHz step) AM : 522 - 1611KHz (9kHz step) Standatd Input: 60dB Antenna : 75 unbalanced , Modulation : 1 kHz Dev.
  • Page 27 WIRING DIAGRAM (TUNER for UK) - 20 - - 21 -...
  • Page 28 WIRING DIAGRAM (TUNER for XE) - 24 - - 25 -...
  • Page 29 WIRING DIAGRAM (FRONT+CD for UK) - 28 - - 29 -...
  • Page 30 WIRING DIAGRAM (FRONT + CD for XE) - 32 - - 33 -...
  • Page 31 WIRING DIAGRAM (AMP for UK) - 36 - - 37 -...
  • Page 32 WIRING DIAGRAM (AMP for XE) - 40 - - 41 -...