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SERVICE MANUAL
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
MICROFILM
WM-EX560/EX562
SPECIFICATIONS
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
CASSETTE PLAYER
US Model
WM-EX562
AEP Model
E Model
WM-EX560/EX562
WM-EX552
MT-WMEX550-125
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Summary of Contents for Sony WM-EX560
- Page 1 WM-EX560/EX562 SERVICE MANUAL US Model WM-EX562 AEP Model E Model WM-EX560/EX562 Dolby noise reduction manufactured under license Model Name Using Similar Mechanism WM-EX552 from Dolby Laboratories Licensing Corporation. Tape Transport Mechanism Type MT-WMEX550-125 “DOLBY” and the double-D symbol a are trade- marks of Dolby Laboratories Licensing Corporation.
- Page 2 TABLE OF CONTENTS SERVICING NOTES ..........3 GENERAL ..............5 DISASSEMBLY ............8 MECHANICAL ADJUSTMENTS ....... 13 ELECTRICAL ADJUSTMENTS ......13 DIAGRAMS 6-1. Block Diagram ..............14 6-2. Printed Wiring Board ............16 6-3. Schematic Diagram ............19 6-4. IC Pin Function Description ........... 25 EXPLODED VIEWS ..........
- Page 3 SECTION 1 SERVICING NOTES This set detects the rotation of GEAR (PH) using the PH701 (photo 1. Setting reflector). The PH701 is mounted on the MAIN board, and there- 1) Refer to “3. DISASSEMBLY”, and remove the cabinet and fore the GEAR cannot be detected with the MAIN board removed. open the MAIN board.
- Page 4 Lever (SW) Rotation system Rotation system during PLAY. gear (NR) (REV: right side/ gear (REEL) FWD: left side) lever (SW) gear (REEL) (S side) (T side) gear (TB) gear (S) motor pulley gear (TA) side F gear (Y) clutch ass’y (M) side R senter flywheel (R) ass’y...
- Page 5 SECTION 2 This section is extracted from instruction manual. GENERAL – 5 –...
- Page 6 – 6 –...
- Page 7 – 7 –...
- Page 8 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. CASSETTE LID ASS’Y CASE ASS’Y REEL ORNAMENT BATTERY HOLDER MAIN BOARD, NOTE FOR INSTALLATON MOTOR (M901) BELT MAGNETIC HEAD (HP901) Note: Follow the disassembly procedure in the numerical order given. CASSETTE LID ASS’Y 1 Open the cassette lid ass’y 3 Remove the cassette lid ass’y to...
- Page 9 CASE ASS’Y 3 case ass’y 1 two serrat IB locks 2 two claws 1 two serrat IB locks REEL ORNAMENT 2 Push to the direction of the arrow A , 4 Remove the reel ornament to direction of the arrow B . remove the claw of knob (OPEN).
- Page 10 BELT 1 belt BATTERY HOLDER 2 screw 4 battery holder 3 two claws 1 Remove two solders of battery terminal. – 10 –...
- Page 11 3 two screws MAIN BOARD 1 Remove four solders of motor. 1 Remove two 2 flexible board solders of plunger solenoid. (CN301) 3 screw (IB lock) 4 MAIN board NOTE FOR INSTALLATION • MAIN BOARD On installation MAIN board adjust the S702 and lever (SW) S702 lever (SW)
- Page 12 MOTOR (M901) 1 two screws (IB lock) 2 Remove the motor (M901) to direction of the arrow. MAGNETIC HEAD (HP901) 1 two pinch levers 5 two screws 2 screw (IB lock) (M1.4 × 7.2) 4 flexible board (CN301) 3 bracket ass’y 6 magnetic head (HP901) –...
- Page 13 SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS PRECAUTION PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened 1. Specified voltage : 1.3 V (DC) swab: 2. Setting playback head pinch roller BL SKIP : OFF rubber belts capstan SOUND MB/GRV : OFF 2.
- Page 17 • Waveforms 1 IC701 #• (PHOTO IN) 5 Q504 Base 500 mV/DIV, 50 ms/DIV 200 mV/DIV, 500 µs/DIV 1.4 Vp-p 0.6 Vp-p 980 µ s 100 ms 6 Q504 Collector 2 IC701 !∞ (XTB) 200 mV/DIV, 500 µs/DIV 200 mV/DIV, 10 µs/DIV 1.3 Vp-p 1 Vp-p 32.768 kHz...
- Page 18 • IC Block Diagrams IC301 TA2072AF IC601 MM1279XVBE – 24 –...
- Page 19 6-4. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC701 MSM6576-83GS-K (SYSTEM CONTROLLER) Pin No. Pin Name Function The output terminal for the control signal to start the motor M.CTL Turn the motor when set to “H” The output terminal for selecting the rotating direction of the motor M.DIR Turn the motor counterclockwise when set to “H”, and clockwise when set to “L”...
- Page 20 Pin No. Pin Name Function — Power supply terminal (+1.5V) BOOST CTL Bass-boost on/off control signal output to the TA2072AF (IC301) MB/GRV CTL MEGA BASS/GROOVE selection signal output to the TA2072AF (IC301) LOAD CTL Load control signal output terminal AVLS (Automatic Volume Limiter System) on/off control signal output to the TA2072AF AVLS CTL (IC301) AMP CTL...
- Page 21 SECTION 7 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they are seldom required for routine service. Some may have some difference from the original one. delay should be anticipated when ordering •...
- Page 22 (2) MAIN BOARD SECTION not supplied HP901 S901 not supplied J801 not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-010-838-24 LOCK, SERRAT IB X-3372-850-1 PINCH LEVER (N) ASSY 3-009-669-01 TERMINAL (+), BATTERY 3-704-413-31 SCREW (M1.4X7.2) 3-375-114-11 SCREW X-3372-849-1 PINCH LEVER (R) ASSY 3-009-670-01 TERMINAL (-), BATTERY...
- Page 23 (3) MECHANISM DECK SECTION (MT-WMEX550-125) M901 PM901 not supplied not supplied 104 103 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3374-440-1 CHASSIS ASSY (J2) X-3372-848-1 CLUTCH ASSY (M) 3-007-457-01 SPRING (TEN), TENSION 3-932-724-21 WASHER 3-010-954-01 SPRING (BT), COMPRESSION 3-386-694-11 WASHER 3-010-274-02 TABLE, REEL X-3374-751-1 FLYWHEEL (N) ASSY...
- Page 24 SECTION 8 MAIN ELECTRICAL PARTS LIST NOTE: When indicating parts by reference • Due to standardization, replacements in the • Items marked “*” are not stocked since they number, please include the board. parts list may be different from the parts speci- are seldom required for routine service.
- Page 25 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C706 1-164-156-11 CERAMIC CHIP 0.1uF Q504 8-729-420-24 TRANSISTOR 2SB1218A-QRS C707 1-115-156-11 CERAMIC CHIP Q601 8-729-403-42 TRANSISTOR XN1401 C708 1-162-953-11 CERAMIC CHIP 100PF Q602 8-729-402-84 TRANSISTOR XN4601 < CONNECTOR > Q701 8-729-422-18 TRANSISTOR XN4315 Q702...
- Page 26 WM-EX560/EX562 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R308 1-216-826-11 METAL CHIP 2.7K 1/16W R309 1-216-841-11 METAL CHIP 1/16W < THERMISTOR (POSITIVE) > R501 1-216-849-11 METAL CHIP 220K 1/16W THP601 1-810-794-11 THERMISTOR, POSITIVE R502...
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