Sony WALKMAN WM-EX910 Service Manual
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3 7 63 1515 0
SERVICE MANUAL
Ver 1.0 2000. 10
Manufactured under license from Dolby Laborato-
ries.
"Dolby" and the double-D symbol are trademarks of
Dolby Laboratories.
TE
L 13942296513
www
.
http://www.xiaoyu163.com
Frequency response (Dolby NR off)
Playback: 30 - 18 000 Hz
Output
Headphones (i jack)
Load impedance 8 - 300 Ω
Power requirements
1.5 V
One rechargeable battery
One R6 (size AA) battery
Dimensions (w/h/d)
Approx. 76.3 × 108.4 × 17.6 mm
× 4
1
3
x
23
inches)
(3
8
8
32
Mass
Approx. 140 g (5.0 oz.)
Supplied accessories
Battery case (1)
Stereo headphones or earphones with
remote control (1)
Battery charger (1)
Rechargeable battery (NC-6WM, 1.2V,
600 mAh, Ni-Cd) (1)
Rechargeable battery carrying case (1)
Carrying pouch (1)
Design and specifications subject to
change without notice.
x
ao
u163
y
i
http://www.xiaoyu163.com
WM-EX910
2 9
8
Photo: Blue model
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Q Q
Battery life (Approx. hours)
3
6 7
1 3
1 5
(in playback)
Rechargeable NC-6WM
fully charged
Sony alkaline LR6 (SG)**
Rechargeable NC-6WM
Sony alkaline LR6 (SG)
used together
* Measured value by the standard
of EIAJ (Electronic Industries
Association of Japan). (Using a
Sony HF series cassette tape)
**When using a Sony LR6 (SG)
"STAMINA" alkaline dry battery
(produced in Japan).
co
.
9 4
2 8
E Model
Chinese Model
NEW
MT-WMEX910-162
0 5
8
2 9
9 4
2 8
(EIAJ*)
20
66
84
m
CASSETTE PLAYER
9 9
9 9

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Summary of Contents for Sony WALKMAN WM-EX910

  • Page 1 Approx. 140 g (5.0 oz.) Association of Japan). (Using a Supplied accessories Sony HF series cassette tape) Battery case (1) **When using a Sony LR6 (SG) Stereo headphones or earphones with “STAMINA” alkaline dry battery remote control (1) (produced in Japan).
  • Page 2: Table Of Contents

    LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY.
  • Page 3: Servicing Notes

    http://www.xiaoyu163.com SECTION 1 3 7 63 1515 0 SERVICING NOTES This set detects the rotation of the idler gear (A) (side S and side 3. FF, REW modes T) using the photo reflector (PH701, 702). The PH701, 702 are 1) Check that the preset state is set. mounted on the MAIN board, therefore the idler gear (A) (side S 2) Input the square wave or sine wave to the TP31 (PH-S), TP32 and side T) cannot be detected with the MAIN board removed.
  • Page 4 http://www.xiaoyu163.com 3 7 63 1515 0 Slider (NR) Rotation system Rotation system during PLAY. gear (NR) (FWD : left side/ REV : right side) idler gear (A) (side S) idler gear (A) (side T) gear (REEL) (side S) gear (REEL) (side T) motor pulley slider (NR) cam gear...
  • Page 5: General

    http://www.xiaoyu163.com SECTION 2 This section is extracted from instruction manual. 3 7 63 1515 0 GENERAL SOUND UK, Australian, and Hong Kong Other models model Autres modèles Modèle pour le Royaume-Unie, Andere Modelle MODE l’Australie et Hong-Kong Modell für GB, Australien und Hongkong AVLS HOLD...
  • Page 6: Disassembly

    http://www.xiaoyu163.com SECTION 3 DISASSEMBLY 3 7 63 1515 0 • This set can be disassembled in the order shown below. CASE SECTION MAIN BOARD BELT (F4) MOTOR, DC (CAPSTAN/REEL) (M601) ORNAMENT (OPEN) BLOCK ASSY LID SUB ASSY, CASSETTE HOLDER (FA) ASSY LEVER (N2)/(R2) ASSY, PINCH HEAD, MAGNETIC (PLAYBACK) (HP901) Note: Follow the disassembly procedure in the numerical order given.
  • Page 7 http://www.xiaoyu163.com 3 7 63 1515 0 MAIN BOARD 1 Remove seven solders of “motor, DC (M601)”. 2 screw 2 screw (M1.4) (toothed lock) S702 3 MAIN board 1 Remove six solders of head flexible board. 2 screw 1 Remove two solders of “solenoid, plunger”.
  • Page 8 http://www.xiaoyu163.com 3 7 63 1515 0 MOTOR, DC (CAPSTAN/REEL) (M601) 1 two screws (M1.4) 2 motor, DC (capstan/reel) (M601) L 13942296513 LID SUB ASSY, CASSETTE 4 lid sub assy, cassette 2 two screws (MI) 3 boss 2 screw u163 1 Open “lid assy, cassette”. –...
  • Page 9 http://www.xiaoyu163.com 3 7 63 1515 0 ORNAMENT (OPEN) BLOCK ASSY 2 claw 4 two claws 5 ornament (open) block assy 3 boss L 13942296513 HOLDER (FA) ASSY 4 screws (M1.4) 5 lever (S) (/M), lock 7 bracket (cassette/910) assy 8 Remove six solders of head flexible board.
  • Page 10 http://www.xiaoyu163.com 3 7 63 1515 0 LEVER (N2)/(R2) ASSY, PINCH 1 claw 2 Remove “lever (R2) assy, pinch” in the direction of the arrow. 3 claw 4 Remove “lever (N2) assy, pinch” holder (FA) assy in the direction of the arrow. L 13942296513 HEAD, MAGNETIC (PLAYBACK) (HP901) 4 boss...
  • Page 11: Mechanical Adjustments

    http://www.xiaoyu163.com SECTION 4 SECTION 5 3 7 63 1515 0 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. Switch position playback head pinch roller VOL, AVLS : Center rubber belts capstan...
  • Page 12: Diagrams

    http://www.xiaoyu163.com WM-EX910 SECTION 6 3 7 6 3 1 5 1 5 0 DIAGRAMS 6-1. BLOCK DIAGRAM RIPPLE FILTER BATT B+ Q309 AUDIO MASTER AMP AUDIO MASTER AMP HP901 IC301-1 IC301-2 J301 (PLAYBACK) IN-L POWER AMP PRE OUT L-CH OUT-L IN-L PREAMP CONTROL...
  • Page 13: Printed Wiring Board

    http://www.xiaoyu163.com WM-EX910 6-2. PRINTED WIRING BOARD 3 7 6 3 1 5 1 5 0 J301 S301 MAIN BOARD (SIDE A) MAIN BOARD (SIDE B) VOL, AVLS MIN t MID t MAX R316 R216 R116 S703 Q314 REW/FF, PUSH Y / x Q312 R201 C201 +...
  • Page 14: Schematic Diagram

    http://www.xiaoyu163.com WM-EX910 6-3. SCHEMATIC DIAGRAM • See page 20 for IC Block Diagrams. • Waveforms 3 7 6 3 1 5 1 5 0 1 IC701 5 (LX) 4 IC705 ef (OSC1) 1 V/DIV, 10 µs/DIV 1 V/DIV, 1 µs/DIV 3 Vp-p 2.4 Vp-p 3 µ...
  • Page 15: 6-4. Ic Pin Function Description

    http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 • IC Block Diagrams IC601 LB1994M-TLM 6-4. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC705 ML63514-024TBZ060 (SYSTEM CONTROLLER) IC301 TA2123AF (EL) Pin No. Pin Name Description AUDIO ATT Audio attenuate control signal output It attenuates, when cue/review “H”: attenuate FWD SW Tape direction switch (S702) input terminal “L”: forward position 36 35...
  • Page 16 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Description P-SIG P-SIG signal input from the capstan/reel motor driver IC (IC601) MOTOR Motor restart control signal output to the capstan/reel motor driver IC (IC601) “L”: restart the motor RESTART Motor direction control signal output to the capstan/reel motor driver IC (IC601) MOTOR DIR “L”: clockwise, “H”: counterclockwise...
  • Page 17: Exploded Views

    http://www.xiaoyu163.com 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 18 http://www.xiaoyu163.com 3 7 63 1515 0 (2) MAIN BOARD SECTION S704 L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-038-056-01 TERMINAL BOARD (MINUS) (/M) 3-365-630-41 SCREW (M1.4) 3-375-114-41 SCREW X-3379-431-1 BRACKET (CASSETTE/910) ASSY 3-224-837-01 SHEET (ATS) 3-038-054-01 LEVER (B) (/M), LOCK * 54 A-3021-344-A MAIN BOARD, COMPLETE...
  • Page 19 http://www.xiaoyu163.com 3 7 63 1515 0 (3) MECHANISM DECK SECTION (MT-WMEX910-162) M601 PM701 L 13942296513 HP901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3377-589-1 HOLDER (FA) ASSY /M X-3377-584-1 CHASSIS ASSY (FA) X-3377-995-1 LEVER (R2) ASSY, PINCH 3-010-274-02 TABLE, REEL 3-038-611-01 SPRING (HD2) 3-010-954-01 SPRING (BT), COMPRESSION...
  • Page 20: Electrical Parts List

    http://www.xiaoyu163.com SECTION 8 MAIN 3 7 63 1515 0 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 21 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC703 8-759-438-27 IC MM1305BWBE R202 1-218-943-11 RES-CHIP 1/16W IC704 8-759-572-21 IC S-80808ANNP-E7Y-T2 R203 1-218-977-11 RES-CHIP 100K 1/16W IC705 8-759-833-30 IC ML63514-024TBZ060 R204 1-218-963-11 RES-CHIP 6.8K...
  • Page 22 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R717 1-208-707-11 METAL CHIP 0.5% 1/16W R718 1-208-675-11 METAL CHIP 0.5% 1/16W R719 1-208-687-11 METAL CHIP 1.5K 0.5% 1/16W R720 1-208-683-11 METAL CHIP 0.5% 1/16W R721...
  • Page 23 WM-EX910 3 7 63 1515 0 L 13942296513 u163 Sony Corporation 2000J0515-1 9-873-015-11 Audio Entertainment Group Printed in Japan C 2000. 10 – 30 – Published by General Engineering Dept. http://www.xiaoyu163.com...

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