sanyo MCD ZX300, MCD ZX350 Service Manual

FILE NO.

Service Manual

CD Portable Radio Cassette Recorder

CONTENTS

Specification ..................................................................... Front

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

Tuner Adjustments ........................................................... 2

Tape Deck Adjustments ................................................... 3

Exploded View (Cabinet & Chassis) ................................ 4

Parts List .......................................................................... 5

Exploded View & Parts List(Tape Deck) ......................... 7

Block Diagram .................................................................. 7

MCD-ZX300 (CA) MCD-ZX300F (XE) MCD-ZX350 (CA) MCD-ZX350F (XE)

MCD-ZX300 SERIES

MCD-ZX350 SERIES

PRODUCT CODE No. 164 083 03 300 (CA) 164 083 01 300F(XE) 164 083 04 350 (CA) 164 083 02 350F(XE)

IC Block Diagram & Description ....................................... 8

Schematic Diagram (Main/CA) ........................................ 10

Schematic Diagram (Main/XE) ......................................... 12

Schematic Diagram (CD/CA) ........................................... 14

Schematic Diagram (CD/XE) ........................................... 16

Wiring Diagram (CD Main and Rec SW) ........................ 18

Wiring Diagram (Tuner, Display and Rectifier) .............. 19

Wiring Connection ........................................................... 20

SPECIFICATIONS

(CASSETTE SECTION)

Recording System ........... 4-track, , 2-channel stereo

Erasing System ............... Magnet erase

Tape speed ..................... 4.75 cm/sec.

Fast forward and

Rewind time .............. Approx. 110 sec. (C-60 tape)

Frequency range ............ 80 - 12,000 Hz (Normal tape)

(CD PLAYER SECTION)

Channels ......................... 2 channels stereo

S/N ratio .......................... 70 dB

Wow & Flutter .................. Below measurable limits

Sampling frequency ........ 44.1 kHz

Quantization .................... 16 bits linear/ch

Pickup light source .......... Semi-conductor laser

Pickup wave length ......... 790 nm

Laser output .................... Continuous wave max. 0.6 mW

(RADIO SECTION)

Tuning range ................... FM : 87.5 - 108 MHz (XE)

FM : 88.0 - 108 MHz (CA)

AM : 526.5 - 1,606.5 kHz (XE)

AM : 525.0 - 1,710.0 kHz (CA)

(GENERAL SECTION)

Power output ................... 2W/ch (DC max)

Speaker ........................... 10 cm x 2

Terminal impedance ....... PHONES : 32 ohms

Power source .................. AC : 230V, 50Hz (XE)

: 120V, 60Hz (CA)

DC : 12 V ("D"X8 batteries)

Dimensions ..................... 380 (W) x 170 (H) x 260 (D) mm

Weight (approx.).............. 2.7 kg (Not including batteries)

Specifications subject to change without notice.

REFERENCE No. SM5810282

LASER BEAM SAFETY PRECAUTION

• Pickup that emits a laser beam is used on this CD 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)

WAVE LENGTH ................. 790 nm

IC BLOCK DIAGRAM & DESCRIPTION

IC301 LA4227(Power Amp.)IC201 TA2068N (Cassette Preamp.)

VCC

OUT1

BS1

101112

NF1

IN1

PRE GND

Ch1

Ch2

BS2 NF2

BIAS

CIRCUIT

IN2 DC

(FILTER)

STANDBY

SHUT DOWN

PROTECTION

OUT2

THERMAL

IC903 MM1469XH (CD Driver)

28 27 26 25 24 23 22 21 20 19 18 17 16 15

Vcc

Level shift

T.S . D

Vcc

D.BU FD.BU FD.BU FD.BU F

Level shift

DRIVER MUTE

- 1 -

Level shift

1234567 891011 12 13 14

Level shift

D.BU FD.BU FD.BU FD.BU F

T103

T102 JW106 T101

T104

IC101

JW105

L101

VC102

VC103

L102

VC104

VC103

FM ANT

FM (E)

MW ANT

(E)

TUNER ADJUSTMENTS

(E)

• Use a plastic screw driver for adjustments.

• Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.

• Set of unit Supply voltage : DC 12V Speaker : 4 ohms Standard output : 50 mW (450 mV) Function switch : RADIO

PARTS LOCATION

1. AM ADJUSTMENT Band switch : MW

Step Adjusting Connection S G Position of Adjust- VTVM

Circuit Input Output Frequency tuning dial ment Oscilloscope

Closed the output Connect sweep

1IFterminal by sweep generator to 465 kHz Low T103

enerator, it place IC101(19(H)) and

to MW ANT. C107

2 515 kHz Low end T101

Tuning Connect AM SG to Connect VTVM to Max.

3 coverage TEST LOOP. speaker terminals. 1640 kHz High end VC103

4 600 kHz 600 kHz MW COIL

Tracking Connect AM SG to Connect VTVM to Max.

5 TEST LOOP. speaker terminals. 1400 kHz 1400 kHz V104

2. FM ADJUSTMENT Band switch : FM FM Dummy antenna : 75 ohms unbalance

Step Adjusting Connection S G Position of Adjust- VTVM

Circuit Input Output Frequency tuning dial ment Oscilloscope

Connect sweep

generator to

IC101 (24pin)

and C107

Connect VTVM

generator to

IC101 (19PIN)

and C1075

T104 and

10.7MHz Low

T102

2 87MHz Low end L102

Tuning Connect FM SG to Connect VTVM to Max.

3 coverage FM ANT (H) & FM (E). speaker terminals. 109MHz High end VC101

4 90.0MHz 90.0MHz L101

Tracking Connect FM SG to Connect VTVM to Max.

5 FM ANT (H) & FM (E). speaker terminals. 106.0MHz 106.0MHz VC102

This is a basic adjustment.

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TAPE DECK ADJUSTMENTS

1. HEAD REPLACEMENT

• After replacement, demagnetize the heads by using a degausser.

• Be sure to clean the heads before attempting to make any adjustments.

• All wiring should be returned to the original position after work is completed.

2. HEAD AZIMUTH ADJUSTMENT

(1) Load the test tape(VTT-703, etc., 10 kHz) for azimuth

adjustment.

(2) Press the PLAY button. (3) Use a cross-tip screwdriver to turn the screw for azimuth

adjustment so that the left and right output are maximized.

(4) Press the STOP button. (5) After completion of the adjustment, use thread lock(TB-1401B)

to secure the azimuth-adjustment screw.

3. MOTOR SPEED ADJUSTMENT

(1) Insert the test tape(TCC-119, etc., 3,000 Hz). (2) Press the PLAY button. (3) Use a flat-tip screwdriver to turn the SVR(located inside the

rear of the motor) to adjust SVR so that the frequency counter become 3,000 Hz.

4. CHECKING THE MECHANISM TORQUES AND TENSION

• Clean the head, capstan and pinch roller before making any measurement.

Measurement Take-up torque Back tension Tape tension

Cassette for PLAY : TW-211A PLAY : TW-2111A Drive-power cassete

measurement F.FW/REW : TW-2231 TW-2412

PLAY 30 - 60 gr.cm 2.0 - 4.5 gr.cm 60 gr or more.

F.FWD 55 - 120 gr.cm. ----- -----

REW 55 - 120 gr.cm. ----- -----

This is a basic adjustment.

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EXPLODED VIEW(CABINET & CHASSIS)

Y01

Y02

Y03

Y04

Y05

Y14

Y13

Y12

Y07

Y10

Y11

Y17

Y18

Y20

Y21

Y22

Y23

Y16

Y15

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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.

PACKING & ACCESSORIES

REF.NO. PART NO. DESCRIPTION

CABINET & CHASSIS

REF.NO. PART NO. DESCRIPTION

1 645 054 3326 KNOB ROTARY,VOL 2 645 054 0776 CD DECK MECHANISM,13933162 3 645 042 1181 CASS DOOR SPRING 4 645 055 1123 ASSY CASS LID,U4-A77 5 645 055 1291 CD DISPLAY LENS(All except 350XE) 5 645 055 1284 CD DISPLAY LENS(350XE) 6 645 055 1116 ASSY CD CTL PANEL 7 645 055 2892 ASSY CABINET(350CA) 7 645 055 2885 ASSY CABINET(300CA) 7 645 055 1062 ASSY CABINET(350XE) 7 645 055 1055 ASSY CABINET(300XE) 8 645 054 3425 KNOB PUSH,BASSXPANDER 9 645 054 3432 KNOB LEVEL,FUNCTION 10 645 042 0924 SPK CLIP 11 645 054 3401 CTL BD BKT 12 645 036 0527 ASSY,CASS GEAR 13 645 054 3333 KNOB CASS PAUSE 14 645 054 3340 KNOB CASS STOP/EJECT 15 645 054 3357 KNOB CASS FFWD 16 645 054 3364 KNOB CASS REWIND 17 645 054 3371 KNOB CASS PLAY 18 645 054 3388 KNOB CASS RECORD 20 645 055 1093 ASSY CD DOOR 25 645 054 3319 KNOB ROTARY,TUNING 26 645 054 0929 HANDLE 27 645 042 0542 DIAL POINTER 28 645 042 0351 CD DOOR SPRING 29 645 055 1109 ASSY TOP PANEL,CD TRAY 30 645 042 0801 CD DOOR LOCK 31 645 033 4245 ASSY,GEAR CD DOOR,1020 33 645 033 3446 RUBBER SILICON 34 645 042 0733 TUNING DRUM 35 645 042 0740 TUNING KNOB GEAR 36 645 033 0391 AC SKT COVER 37 645 042 0788 FUNCTION KNOB BKT

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.

REF.NO. PART NO. DESCRIPTION

38 645 042 0764 BAND KNOB BKT

645 055 3080 CARTON CASE(300CA) 645 055 1390 CARTON CASE(300XE) 645 055 3097 CARTON CASE(350CA) 645 055 1406 CARTON CASE(350XE) 645 055 3028 INSTRUCTION MANUAL(CA) 645 055 1314 INSTRUCTION MANUAL(300XE) 645 055 1321 INSTRUCTION MANUAL(350XE) 645 055 3059 POLY BAG(CA) 645 046 1620 POLY BAG(XE) 645 044 1943 POLY BAG,I/B 645 027 2073 POLY BAG,PWR CORD 645 055 1369 POLY FOAM 645 023 3463 POWER CORD(XE) 645 041 7160 AC CORD(CA) 645 041 9812 REMOTE CTL(350CA,XE)

39 645 055 1086 ASSY CABINET REAR(All except 300XE) 39 645 055 1079 ASSY CABINET REAR(300XE) 40 645 054 3432 KNOB LEVEL,BAND 44 645 055 1307 BATTERY LID

FIXING PARTS

REF.NO. PART NO. DESCRIPTION

Y01 645 027 1168 SCR 3X8,SPK Y02 645 023 6617 SCREW ST 3X10,CTL BKT Y03 645 027 1168 SCR 3X8,CASS DOOR GEAR Y04 645 023 6594 SCREW ST 3X8,RECORDING BD Y05 645 023 6617 SCREW ST 3X10,CASS DECK Y07 645 023 6594 SCREW ST 3X8,CD BD Y10 645 033 4276 SCR 2X6,CD LEAF AW Y11 645 042 0306 SCR 3 X 12,CD TRAY TO F CAB Y12 645 027 1168 SCR 3X8,CD DOOR GEAR Y13 645 027 1373 WASHER METAL Y14 645 033 0247 SCR 2.6X8,CD DECK Y15 645 033 1527 SCR 2.6X6,TUNING DRUM Y16 645 023 6594 SCREW ST 3X8,TUNER BD Y17 645 027 1182 SCR 3X20,PWR TRANS Y18 645 027 1144 SCR 2.8X12,AC SOCKET Y20 645 023 6594 SCREW ST 3X8,RECTIFIER BD Y21 645 027 1199 SCR 3X30,F CAB TO BACK CAB Y22 645 027 1236 SCR 3X8,ROD ANT Y23 645 023 6617 SCREW ST 3X10,CD TRAY

ELECTRICAL-PARTS

REF.NO. PART NO. DESCRIPTION

51 645 042 3307 SPK 4 53 645 043 9780 LEAF SW,CD LID SW

54 54 55 55 56 56

645 042 9439 PWR TRANS,D1110VN(CA)

645 041 9881 PWR TRANS,V3023FS(XE)

645 041 9935 AC SOCKET HJC-022A,UL APP(CA)

645 032 9760 AC SOCKET S-1-1225,VDE MARK(XE)

645 055 2984 FUSE GLASS TUBE,FS1101(CA)

645 054 0639 FUSE GLASS TUBE,FS1101(XE)

57 645 041 9928 ROD ANTENNA,2 SECTION

645 055 1161 FFC CABLE 16PINS,

CD CN904 TO CD DECK

DISPLAY P.W.BOARD ASSY

REF.NO. PART NO. DESCRIPTION

71 614 324 6763 ASSY,PWB DISPLAY(Only initial)

71 614 324 5438 ASSY,PWB DISPLAY(Only initial)

D1201 645 033 3477 DIODE RPM-6938-V4(350CA,XE) LED701 645 054 0615 LED ROUND TYPE,P/P LED702 645 054 0615 LED ROUND TYPE,REP LED703 645 054 0615 LED ROUND TYPE,PROG SW701 645 042 0023 SW TACT,STOP/CLEAR SW702 645 042 0023 SW TACT,FB-B-SCAN SW703 645 042 0023 SW TACT,FF-F-SCAN SW704 645 042 0023 SW TACT,REPEAT

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(300CA,XE)

(350CA,XE)

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