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Sony WM-EX527 Service Manual
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Sony WM-EX527 Service Manual

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See also: Operating Instructions
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3 7 63 1515 0
SERVICE MANUAL
Ver 1.0 2003.01
• Frequency response
Playback: 30 - 18 000 Hz
TE
L 13942296513
• Output
Headphones (
Load impedance 8 – 300
• Power requirements
1.5 V
One R6 (size AA) battery
• Dimensions (w/h/d)
Approx. 78.1 x 108.0 x 28.1 mm (excluding projecting parts
and controls)
• Mass
Approx. 161 g (main unit only)
• Supplied accessories
Stereo headphones or earphones with remote control (1)
Design and specifications are subject to change without notice.
www
.
Sony Corporation
9-874-279-01
2003A0500-1
Personal Audio Company
C 2003.01
Published by Sony Engineering Corporation
http://www.xiaoyu163.com
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WM-EX527
2 9
8
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Battery life* (Approx. hours)
Q Q
3
6 7
1 3
1 5
Tape playback
* Measured value by the standard of JEITA(Japan Electronics
and Information Technology Industries Association) (Using
a Sony HF series cassette tape).
**When using a Sony LR6(SG) "STAMINA" alkaline dry
battery(produced in Japan).
Note
• The battery life may be shorter depending on the
operating condition, the surrounding temperature
and battery type.
co
.
9 4
2 8
E Model
WM-EX526
MT-WMEX505-162
Sony alkaline LR6 (SG)**
0 5
8
2 9
9 4
2 8
35
m
CASSETTE PLAYER
9 9
9 9

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  • Page 1 Information Technology Industries Association) (Using 1.5 V a Sony HF series cassette tape). One R6 (size AA) battery **When using a Sony LR6(SG) “STAMINA” alkaline dry • Dimensions (w/h/d) battery(produced in Japan). Approx. 78.1 x 108.0 x 28.1 mm (excluding projecting parts...

  • Page 2: Table Of Contents

    WM-EX527 3 7 63 1515 0 TABLE OF CONTENTS Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270 ˚C dur- ing repairing. SERVICING NOTES ..........3 • Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

  • Page 3: Servicing Notes

    WM-EX527 SECTION 1 SERVICING NOTES 3 7 63 1515 0 This set detects the rotation of the idler gear (A) (side S) using the 3. FF, REW modes PH701 (photo reflector). The PH701 is mounted on the MAIN (1) Check that the preset state is set.

  • Page 4: Wm-Ex527 Qq

    WM-EX527 3 7 63 1515 0 SLIDER (NRA) Rotation system Rotation system during PLAY gear (NR) (FWD: left side REW: right side) idler (A) gear (T side) idler (A) gear (S side) gear (REEL) (S side) gear (REEL) (T side)

  • Page 5: General

    WM-EX527 SECTION 2 This section is extracted from instruction manual. 3 7 63 1515 0 GENERAL BATT OPEN OPEN Plug in firmly. VOL* Y•x** HOLD FF (AMS• HOLD Y•REPEAT** BL SKIP/s) REW (AMS•AVLS) FUNCTION SOUND L 13942296513 * There is a tactile dot beside VOL on the main unit to show the direction to turn up the volume.

  • Page 6: Disassembly

    WM-EX527 SECTION 3 DISASSEMBLY 3 7 63 1515 0 • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed.

  • Page 7: Case Block Assy

    WM-EX527 3 7 63 1515 0 3-3. CASE BLOCK ASSY 2 case block assy 1 three screws (M1.4) 1 two screws L 13942296513 (M1.4) 3-4. REEL ORNAMENT BLOCK ASSY 1 two claws 1 claw 2 reel ornament block assy...

  • Page 8: Battery Holder

    WM-EX527 3 7 63 1515 0 3-5. BATTERY HOLDER 2 two screws 3 battery holder L 13942296513 1 Break the soldering 1 Break the soldering of battery terminal (–). of battery terminal (+). 3-6. BELT (F2) 1 belt (F2) (See page 4) u163 http://www.xiaoyu163.com...

  • Page 9: Main Board

    WM-EX527 3 7 63 1515 0 3-7. MAIN BOARD 2 screw (M1.4) 1 Remove four solders of motor. flexible board 1 Remove two solders of plunger solenoid. 1 Remove six solders of flexible board. 1 Remove four solders of leaf switch.

  • Page 10: Motor (Capstan/Reel) (M901)

    WM-EX527 3 7 63 1515 0 3-8. MOTOR (CAPSTAN/REEL) (M901) 1 two screws (M1.4) 2 motor (capstan/reel) (M901) L 13942296513 3-9. HOLDER (FS) SECTION 2 boss 7 bracket (cassette) assy (/M) 5 lock lever (S) (/M) 3 lock lever (B)

  • Page 11: Pinch Lever (N) Assy, Pinch Lever (R) Assy

    http://www.xiaoyu163.com 3 7 63 1515 0 3-10. PINCH LEVER (N) ASSY, PINCH LEVER (R) ASSY 1 claw 2 Remove the pinch lever (R) assy to direction of the arrow. 4 Remove the pinch lever (N) assy to direction of the arrow. 3 claw L 13942296513 3-11.

  • Page 12: Mechanical Adjustments

    WM-EX527 SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS 3 7 63 1515 0 ELECTRICAL ADJUSTMENTS PRECAUTION PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened 1. Specified voltage : 1.3 V (DC) swab: 2. Switch setting playback head pinch roller...

  • Page 13: Diagrams

    WM-EX527 SECTION 6 3 7 6 3 1 5 1 5 0 DIAGRAMS 6-1. BLOCK DIAGRAM BATT B+ RIPPLE FILTER Q301 BASE AUDIO MASTER AMP RF OUT IC301 HP901 J301 RV301-1 (PLAYBACK) IN-L POWER AMP L-CH OUT-L IN-L PREAMP...

  • Page 14: Note For Printed Wiring Board And Schematic Diagram

    WM-EX527 3 7 6 3 1 5 1 5 0 6-2. NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM • Waveforms 1 IC702 4 (LX) Note on Printed Wiring Board: Note on Schematic Diagram: • X : parts extracted from the component side.

  • Page 15: Printed Wiring Board

    WM-EX527 3 7 6 3 1 5 1 5 0 6-3. PRINTED WIRING BOARD J301 MAIN BOARD (SIDE A) MAIN BOARD (SIDE B) RV301 Q301 R302 C203 –2 R306 S707 HOLD R108 –1 HOLD C321 R304 S901-1 (TAPE DETECT)

  • Page 16: Schematic Diagram

    WM-EX527 3 7 6 3 1 5 1 5 0 6-4. SCHEMATIC DIAGRAM • • See page 13 for Waveforms. See page 16 for IC Block Diagrams. 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 17: Ic Pin Function Description

    WM-EX527 3 7 6 3 1 5 1 5 0 • IC Block Diagrams 6-5. IC PIN FUNCTION DESCRIPTION • IC701 uPD789166GB-510-8ES (SYSTEM CONTROLLER) IC301 TA2123AF (EL) Pin No. Pin Name Description BATT DET Battery voltage detection signal input (A/D input)

  • Page 18: Tel 13942296513

    WM-EX527 3 7 63 1515 0 Pin No. Pin Name Description Motor speed control signal output to the capstan/reel motor drive SPEED CTL “L”: normal speed, “H”: 1/2 speed MUTE Power on muting control signal output to the audio master amplifier “L”: muting on VSS1 —...

  • Page 19: Exploded Views

    WM-EX527 SECTION 7 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they may have some difference from the original are seldom required for routine service. Some one.

  • Page 20: Mechanism Deck Section (Mt-Wmex505-162)

    WM-EX527 3 7 63 1515 0 7-2. MECHANISM DECK SECTION (MT-WMEX505-162) M901 PM901 L 13942296513 HP901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3378-354-5 HOLDER (FS) ASSY 3-007-433-01 SHEET (N), REFLECTION X-3377-363-1 LEVER (R) ASSY, PINCH...

  • Page 21: Electrical Parts List

    WM-EX527 SECTION 8 MAIN 3 7 63 1515 0 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.
  • Page 22 WM-EX527 3 7 63 1515 0 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JC702 1-216-864-11 SHORT CHIP R703 1-216-853-11 METAL CHIP 470K 1/10W R704 1-216-853-11 METAL CHIP 470K 1/10W < COIL > R705...
  • Page 23 WM-EX527 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark MISCELLANEOUS ************** HP901 1-500-639-21 HEAD, MAGNETIC (PLAYBACK) M901 1-763-166-14 MOTOR (CAPSTAN/REEL) (WITH PULLEY) PM901 1-454-674-41 SOLENOID, PLUNGER S901 1-771-888-11 SWITCH, LEAF (TAPE DETECT, ATS)
  • Page 24 WM-EX527 3 7 63 1515 0 MEMO L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 25 WM-EX527 3 7 63 1515 0 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page.

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