Sanyo DCMCR-50 Service manual

FILE NO.

Service Manual

Micro Component System

CONTENTS

Laser beam safety precaution..........................................1

Block diagram ..................................................................1, 7

Tuner Adjustment.............................................................2

Exploded View (Cabinet & Chassis) ................................3

Parts List ..........................................................................4

Schematic Diagram (Main) .............................................. 12

Wiring Diagram (CD Main, CD Door Sw, LED1, LED2,

and Audio).........................................14

Wiring Diagram (Display and Phone & Remote)............16

Wiring Connection...........................................................Rear

DC-MCR50 (XE)

PRODUCT CODE No. 129 664 02

REFERENCE No. SM5810404

LASER BEAM SAFETY PRECAUTION

1 2 3

Pin No. Function

1INPUT 2COMMON 3

OUTPUT

• Pick-up that emits a laser beam is used in this CD player section.

CAUTION :

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE

LASER OUTPUT..........0.6 mW Max. (CW)

WAVELENGTH ............. 790 nm

IC BLOCK DIAGRAM & DESCRIPTION

CAUTION – INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM. ADVARSEL – USYNLIG LASER STRÅLING VED ÅBNING, NÅR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION, UNDGÅ UDS ÆTTELSE FOR STRÅLING. VARNING – OSYNLIG LASER STRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRR ÄR URKOPPLAD. STRÅLEN ÄR FARLIG. VORSICHT – UNSICHTBARE LASERSTRAHLUNG TRITT AUS, WENN DECKEL GEÖFFNET UND WENN SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT IST. NICHT, DEM STRAHL AUSSETZEN. VARO – AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KA

TSO SÄTEESEEN.

IC101 LA1823 (FM/AM MIX.)

DET

PILOT

COMP

PHASE

FF FFFF

OSC

VCO

ST SW

TRIG

MIX

DECODER

MUTEV

AGCST

DET

S-METER

IC102 LC72131 (PLL)

BUFFER

IC401 KIA7808 (Regulator)

2GND2

24 23 22 21 20 19 18 17 16 15 14 13

MIX

OSC

BUFFER

1 GND1

OSC

REG V

1 2 3 4 5 6 7 8 9 10 11 12

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TUNER ADJUSTMENTS

Use a plastic screw driver for adjustments. Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter. Supply voltage : DC 12.0V Phones impedance : 32 ohms Function switch : RADIO

a. Parts Location

b. AM Adjustment BAND SELECT SWITCH: AM.

Adjusting Tuning Input Connection Output Connection Adjustment VTVM Oscilloscope

Ste

circuit Frequency Measurement Input

1 IF 999 kHz AM Sweep Loop ANT VTVM

(450 KHz) Genertor 2 Tuning 522 KHz 3 Coverage 1611 kHz Voltmeter C131(E) 4 603 kHz AM Signal VTVM C146TU(L) 5 Tracking 1404 kHz Generator

b. FM Adjustment BAND SELECT

p Adjusting Tuning Input Connection Output Connection Adjustment

Ste

circuit Frequency Measurement Input

1 IF 98.0 MHz FM Sweep IC101(5)H

(10.70 MHz)

2 Tuning 87.5 MHz

Coverage

3 4 90.0 MHz FM Signal C110 (H) VTVM C146TU(L) 5 Tracking 106.0 MHz

108 MHz Voltmeter C105(E)

Genertor IC101(6) E

Digital C105(H) L103 2.0V+/- 0.2V

Generator

Digital C131(H), T101 1.50V+/- 0.05 V

Loop ANT

SWITCH: FM.

IC101(6)E

Measurement

Oscilloscope

Measurement

VTVM IC101PIN19(H)

Oscilloscope IC101PIN6(E)

Oscilloscope

Output Parts OR VT. VOLT.

IC101PIN19(H)

IC101PIN6(E)

IC101 pin6(E) TC101

FM Dummy Antenna : 75 ohm unbalance

Output Parts

IC101 pin6(E)

T102

Confirm 7.8V+/-0.8 V

L106

VTVM Oscilloscope

(Non-adjustment)

Confirm6,5V+/- 0.8V

L102

TC102

Maximum

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EXPLODED VIEW(CABINET & CHASSIS)

S10

S11

S13

S14

S16

S17

S18

S14

S21

S22

S23

S24

S22

S23

S24

S21

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PARTS LIST

PRODUCT SAFETY NOTICE

EACH PRECAUTION IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED WITH

THE IEC SYMBOL CAN OF SPECIAL SIGNIFICANCE. WHEN REPLACING A COMPONENT IDENTIFIED , 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. 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.

CAUTION : Regular type resistors and capacitors are not listed. To know those values, refer to the schematic diagram.

IN THE PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY

Regular type resistors are less than 1/4W carbon type and 0 ohm chip resistors. Regular type capacitors are less than 50V and less than 1000µF of Ceramic type and Electrolytic type.

PACKING & ACCESSORIES

REF.NO. PART NO. DESCRIPTION

645 062 1918 INSTRUCTION MANUAL 645 027 2073 POLY BAG,PWR CORD 645 044 1943 POLY BAG,I/B 645 062 2014 POLY BAG,UNIT 645 062 2007 POLY BAG,SPK 645 062 2021 POLY FOAM,KIT 645 062 2083 CARTON CASE

645 023 3463 POWER CORD 645 061 6280 REMOTE CTL,RC29-100000-010

62 645 062 0652 SPK BOX L,LEFT 63 645 062 0669 SPK BOX R,RIGHT

645 061 6297 ANTENNA LOOP

CABINET & CHASSIS

REF.NO. PART NO. DESCRIPTION

1 645 062 1659 CD DOOR 2 645 062 1437 CD DOOR BKT 3 645 062 1567 CD DOOR LENS 4 645 062 0591 ASSY CABINET TOP 6 645 062 1383 PULLEY WORM GEAR 7 645 062 1284 CD DOOR GEAR 8 645 062 1376 MOTOR PULLEY 9 645 062 1420 MOTOR BKT 11 645 062 1611 TRANSPARNT LENS L 12 645 062 1628 TRANSPARNT LENS R 15 645 062 1338 KNOB BASS 16 645 062 1321 KNOB TUNING 17 645 062 1369 KNOB PRESS 18 645 062 1505 KNOB CD DOOR,OPEN 19 645 062 1512 KNOB FUNCTION 20 645 062 1352 KNOB SW,MONO/STEREO 21 645 062 1574 CD DISPLAY LENS 26 645 062 1345 KNOB VOLUME 27 645 062 1208 CD DECK MECHANISM 28 645 033 3446 RUBBER SILICON,HARDNESS 29 645 027 1373 WASHER METAL 30 645 062 1635 CAB REAR COVER,

31 645 062 1222 HEAT SINK 33 645 062 1307 CABINET MIDDLE 34 645 062 1482 PANEL SIDE L,LEFT 35 645 062 1499 PANEL SIDE R,RIGHT 36 645 062 1406 AC SOCKET BKT 40 645 033 0391 AC SKT COVER 43 645 055 7514 REMOTE RECEIVER BKT 45 645 062 1598 DECOR FRANT LENS 46 645 062 1314 CABINET BOTTOM 47 645 062 1536 REMOTE LENS 48 645 062 1642 CABINET TOP 49 645 062 0584 ASSY CABINET BOTTOM

HEAT SINK COVER

FIXING PARTS

REF.NO. PART NO. DESCRIPTION

S10 645 023 6594 SCREW ST 3X8,DISPLAY BD S11 645 023 6594 SCREW ST 3X8,ANT JACK,

S13 645 023 6594 SCREW ST 3X8,AUX JACK,

S14 645 062 1116 SCR 3X15,CAB BTM TO CAB TOP S16 645 023 6617 SCREW ST 3X10,AC SOCKET S17 645 023 6594 SCREW ST 3X8,H/JACK BD S18 645 023 6594 SCREW ST 3X8,MAIN BD S1 645 062 1086 SCR 2X5,CD DOOR LENS S2 645 062 1109 SCR 2.6X4,MOTOR S3 645 023 6594 SCREW ST 3X8,MOTOR BKT S4 645 027 1168 SCR 3X8,CD DOOR SW S5 645 062 1116 SCR 3X15,

S6 645 023 6594 SCREW ST 3X8,

S7 645 023 6587 SCREW ST 3X8,IC TO H/S S8 645 023 6594 SCREW ST 3X8,AUDIO BD S9 645 033 0247 SCR 2.6X8,CD DECK

OPTICAL JACK

RCA JACK

PWR TRANS TO CAB BTM

H/S COVER TO CD TRAY

ELECTRICAL-PARTS

REF.NO. PART NO. DESCRIPTION

5 645 062 1215 CD DOOR MOTOR 14 39 645 032 9760 AC SOCKET S-1-1225

645 062 0683 PWR TRANS,9023FS

645 062 0928 2P CONNECTOR,SPEAKER 645 042 9569 HSG 6P,MAIN CN902 TO CD DECK 645 062 1000 HSG 2P,MAIN CN706 TO LED BD 645 062 1017 HSG 4P,MAIN CN704 TO CN804 645 062 1024 HSG 4P,MAIN CN303 TO CN305 645 062 1031 HSG 5P,MAIN CN301 TO CN801 645 062 1048 HSG 7P,MAIN CN302 TO CN304 645 062 1055 HSG 14P,MAIN CN703 TO CN708 645 062 1062 HSG 5P,

645 062 1079 FFC CABLE 16P,

645 062 1185 HSG 12P,MAIN CN701 TO CN709 645 062 1192 HSG 13P,MAIN CN702 TO CN707

MAIN CN903 TO CD DOOR SW

MAIN CN901 TO CD DECK

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