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WM-EX170/EX172
SERVICE MANUAL
Canadian Model
WM-EX170

AEP Model E Model
WM-EX170/172

Photo : WM-EX172

Manufactured under license from Dolby Laboratories Licensing Corporation. "DOLBY" and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism Tape Transport Mechanism Type

NEW MT-WMEX170-114

SPECIFICATIONS

· Power requirements 3V DC batteries R6 (AA) × 2 / External DC 3V power sources · Dimensions 88.5 × 111.5 × 37.6 mm (3 1/ 2 × 4 1/ 2 × 1 1/ 2 inches) (w / h/ d) incl. projecting parts and controls · Mass EX170 : Approx. 125 g (4.5 oz) / Approx. 185 g (6.6 oz) incl. batteries and a cassette EX172 : Approx. 130 g (4.6 oz) / Approx. 190g (6.8 oz) incl. batteries and a cassette · Supplied accessories Stereo headphones or Stereo earphones (1) / Belt clip (1)

Design and specifications are subject to change without notice.

CASSETTE PLAYER
MICROFILM

TABLE OF CONTENTS 1. 2.
2-1. 2-2. 2-3. 2-4. 2-5.

GENERAL ······································································ 2 DISASSEMBLY
Cabinet (Front) Assy ·························································· 3 Main Board ········································································· 4 Cassette Lid ········································································ 4 Mechanism Deck ································································ 5 Belt, Motor (Reel/Capstan) ················································ 5

Flexible Circuit Board Repairing · Keep the temperature of the soldering iron aroud 270° C during repairing. · Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). · Be careful not to apply force on the conductor when soldering or unsoldering. Notes on chip component replacement · Never reuse a disconnected chip component. · Notice that the minus side of a tantalum capacitor may be damaged by heat.

3. 4. 5.
5-1. 5-2. 5-3. 5-4. 5-5. 5-6.

MECHANICAL ADJUSTMENT ······························ 6 ELECTRICAL ADJUSTMENT ································ 6 DIAGRAMS
Block Diagram ··································································· 7 Printed Wiring Board (EX170 Model) ······························· 9 Schematic Diagram (EX170 Model) ································ 11 Printed Wiring Board (EX172 Model) ····························· 13 Schematic Diagram (EX172 Model) ································ 15 IC Block Diagrams ··························································· 17

6.
6-1. 6-2. 6-3. 6-4.

EXPLODED VIEWS
Cabinet Section ································································· 18 Main Board Section ·························································· 19 Mechanism Section-1 (MT-WMEX170-114) ·················· 20 Mechanism Section-2 (MT-WMEX170-114) ·················· 21

7.

ELECTRICAL PARTS LIST ··································· 22

SECTION 1 GENERAL

This section is extracted from instruction manual.

EX172 MODEL

--2--

SECTION 2 DISASSEMBLY
· This set can be disassembled in the order shown below.
2-1. CABINET (FRONT) ASSY 2-2. MAIN BOARD 2-3. CASSETTE LID 2-4. MECHANISM DECK 2-5. BELT, MOTOR (REEL/CAPSTAN)

Note :

Follow the disassembly procedure in the numerical order given.

2-1. CABINET (FRONT) ASSY
2 Insert the precision screwdriver (1.4 mm flat-blade) into the slit at claw A and release the claw. 3 Remove the cabinet (front) assy. (Release all claws B to L in alphabetical order.)

Cassette, lid
A

Cabinet (front) assy

1 Two screws [Screw (B1.7 × 9), tapping]

D

E F

C

G

B H I L K J

--3--

2-2. MAIN BOARD
3 Remove the four solders.

4 Screw (M1.4), toothed lock (WH) 2 Flexible board (CN302)

6 MAIN board

5 Two claws

1 Head flexible board (CN301)

2-3. CASSETTE LID
2 Insert a precision screwdriver (1.4 mm flat-blade) vertically into portion A to release the hinge plate. 3 Portion B to release the hinge plate. B

5 Spring (torsion)

A

1 Open the cassette lid. 4 Cassette lid.

--4--

2-4. MECHANISM DECK

2 Remove the mechanism deck in the direction of the arrow.

1 Insert the precision screwdriver (1.4 mm flat-blabe) in to the slit and release two claws.

2-5. BELT, MOTOR (REEL/CAPSTAN)

2 Two screw [screw (M1.4), special head]

3 Motor (reel/capstan)

1 Belt

--5--

SECTION 3 MECHANICAL ADJUSTMENT
1. PRECAUTION Clean the following parts with a denatured-alcahol-moistened sweb : Playback head Pinch roller Rubber belt Capstan Demagnetize the playback head using a demagnetizer. Do not use a magnetized screwdriver for adjustments. After adjusting, apply screw-locking compound onto the adjusted parts. Unless specified otherwise, use a specified voltage (3.0V) to perform the adjustments. 1. 2.

SECTION 4 ELECTRICAL ADJUSTMENT
PRECAUTION Specified voltage : 3.0V Switch position DOLBY NR switch : OFF (EX172 MODEL) AVLS switch : NORM

2. 3. 4. 5.

CASSETTE SECTION
Test Tape Type WS-48A Signal 3kHz, 0dB Purpose Tape Speed Adjustment

Torqu Measurement Mode FWD FWD Back Tension REV REV Back Tension FF REW Torqu meter CQ-102C Meter reading 20 - 30 g · cm 0.4 - 2.0 g · cm 20 - 30 g · cm CQ-102RC CQ-201B 0.4 - 2.0 g · cm More than 40 g · cm
PHONES jack

Tape Speed Adjustmnet Procedure :
Test tape WS-48A (3kHz, 0dB)

16 Frequency counter Set
+ ­

1. 2.

Playback WS-48A (Tape center part) and adjust RV601 so that the frequency counter reading becomes 3,000Hz ± 15Hz. Playback WS-48A (Tape top and end). Check that frequency counter reading is within 1.5% of the reading of step1.

Adjustment Point : [MAIN BOARD] --CONDUCTOR SIDE --

RV601: Tape speed

--6--

SECTION 5 DIAGRAMS
5-1. BLOCK DIAGRAM

WM-EX170/EX172

MAIN BOARD

EX172 MODEL MEGA BASS UNIT S352 DOLBY NR ON ­ OFF RV351 HIGH RV352 LOW S351 MEGA BASS OFF ­ ON

EX170 MODEL MEGA BASS UNIT S351 MEGA BASS OFF ­ ON

VREF VREF

VREF

15
LOW BOOST GAIN

14
M.B ON/OFF

EX170 MODEL

EX172 MODEL 13 ON/OFF L 28 PRE 24 OUT2 L PRE 23 OUT1 R 4 IN L OUT L 5

IC301
PRE + POWER AMP J302 PHONES MIX OUT L 35 RV301 VOLUME MIX OUT R 34 1 PWR IN1 R PWR OUT 1(R) 4 AVLS 3 COM 6 VCC 7 36 PWR IN2 L PWR 8 OUT 2(L) S305 AVLS NORMAL LIMIT

IC331
DOLBY NR EX170 MODEL

17 HP IN 2L

18 MIX IN 2L 19 HP IN 1R 20 MIX IN 1R

R HP901 PLAYBACK HEAD

29

11 IN R

OUT R 10

EX170 MODEL

32 VREF

VREF

21 22

26 25

D150 BATT

IC601
M901 REEL/CAPSTAN MOTOR 4 5 6 U V S/S 13 IN+ 15 VREF 14 MOTOR DRIVE

S303 (TAPE SELECTOR) NORM CrO2/METAL S302 (POWER)
DRY BATTERY SIZE "AA" (IEC DESIGNATION R6) 2PCS, 3V

RV601 TAPE SPEED

W

J301 DC IN 3V

· Signal path. E : PB

--7--

--8--

WM-EX170/EX172
5-2. PRINTED WIRING BOARD

(EX170 MODEL)

1
· Semiconductor

2

3

4

5

6
MEGA BASS UNIT 6 4 2 ON OFF

7

8

9

10

11

12

Location
Ref. No. Location D150 IC301 IC601 H-3 E-7 E-10

A

M901 REEL/CAPSTAN MOTOR

ORG

WHT

B
MAIN BOARD

DRY BATTERY SIZE "AA" (IEC DESIGNATION R6) 2PCS, 3V

RED

BLK

EXCEPT E,9E

C
J302

E,9E MODEL
1 6

WHT

ORG

D
AVLS NORM LIMIT

RED

BLK

DC IN 3V

E
NORM CrO2/ METAL

10 19 18 15 9 5 25 27 30 28 36 1

F

L

R

G

RV301 VOLUME S302 (POWER) 6 1

16

H

BATT

1-667-710-

11 (11)

Note on Printed Wiring Board: · X : parts extracted from the component side. · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) · Abbreviation CND : Canadian. EE : East European. FR : French. 9E : Country of origin is not shown.

HP901 PLAY BACK HEAD

4 L R 2 5 3

--9--

-- 10 --

WM-EX170/EX172
5-3. SCHEMATIC DIAGRAM

(EX170 MODEL)

Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/ 4 W or less unless otherwise specified. · % : indicates tolerance. · C : panel designation. · U : B+ Line. · H : adjustment for repair. · Total current is measured with no cassette installed. · Power voltage is dc V and fed with regulated dc power supply from external power voltage jack. · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : PLAY

· Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Signal path. E : PB · Abbreviation CND : Canadian. EE : East European. FR : French. 9E : Country of origin is not shown.

-- 11 --

-- 12 --

WM-EX170/EX172
5-4. PRINTED WIRING BOARD

(EX172 MODEL)

1
· Semiconductor

2

3

4

5
7 8 6 5 4 3 2

6
MEGA BASS UNIT RV351 HIGH RV352 LOW OFF S351 ON MEGA BASS ON S352 DOLBY NR OFF

7

8

9

10

11

12

Location
Ref. No. Location D150 IC301 IC331 IC601 H-3 F-7 F-4 E-10

A

M901 REEL/CAPSTAN MOTOR

B

ORG

WHT

1

DRY BATTERY SIZE "AA" (IEC DESIGNATION R6) 2PCS, 3V

C

MAIN BOARD

RED

BLK

9

EXCEPT E,6E,9E

J302

D

E,6E,9E MODEL
1 5 9

WHT

ORG

E

AVLS NORM LIMIT
10 19 18 15 9 5 25 27 30 28 36 1

RED

BLK

DC IN 3V

F

NORM CrO2/ METAL

G
L RV301 VOLUME R

H
16
BATT

S302 (POWER)

6

1

1-667-711-

11 (11)

Note on Printed Wiring Board: · X : parts extracted from the component side. · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

· Abbreviation CND : Canadian. EE : East European. FR : French. 6E : Central and South America. 9E : Country of origin is not shown.

HP901 PLAY BACK HEAD

4 L R 2 5 3

-- 13 --

-- 14 --

WM-EX170/EX172
5-5. SCHEMATIC DIAGRAM

(EX172 MODEL)

Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/ 4 W or less unless otherwise specified. · % : indicates tolerance. · C : panel designation. · U : B+ Line. · H : adjustment for repair. · Total current is measured with no cassette installed. · Power voltage is dc V and fed with regulated dc power supply from external power voltage jack. · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : PLAY · Voltages are taken with a VOM (Input impedance 10 M).

Voltage variations may be noted due to normal production tolerances. · Signal path. E : PB · Abbreviation EE : East European model. FR : French model 6E : Central and South America. 9E : Country of origin is not shown.

-- 15 --

-- 16 --

5-6. IC BLOCK DIAGRAMS
IC331 NJM2185V

V+
14

SW
13

VEXT
12

INA
11

OUTA
10

DCA
9

DETA
8

+ ­
SUM

G2

G1

V/I

Weight

BIAS Circuit

Gm

­ +

Ach BLOCK

Bch BLOCK
1 2 3 4 5

(same Ach) 6 7

GND

IREF

VREF

INB

OUTB

DCB

DETB

IC601 LB1979V
FC GND VREF COM OSC
11 OSCILLATOR CIRCUIT 10

OUT

VSP

20

19

18

17

16

15

14

13 POWER SUPPLY BIAS

S/S

IN+

FC

RI

12

CURRENT DETECT SPEED DETECT

REFERENCE VOLTAGE REFERENCE VOLTAGE FOR SPEED CONTROL OUTPUT

WAVEFORM DETECT
CURRENT/MOTIVE LOGIC

PRE DRIVER

MOTIVE POWER DETECT

SOFT SW

MIX

1

2

3

4

5

6

7

8

9

WB

VCC

NC

U OUT

V OUT

W OUT

P-GND

VB

UB

-- 17 --

GND

SECTION 6 EXPLODED VIEWS
NOTE: · -XX, -X mean standardized parts, so they may have some differences from the original one. · Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. · · The mechanical parts with no reference number in the exploded views are not supplied. Abbreviation · CND : Canadian. EE : East European. FR : French. 6E : Central and South America. 9E : Country of origin is not shown. Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts of Color Cabinet's Color

6-1. CABINET SECTION

9 7 16

8

15

6

5 4

10 11 12

3 13

MT-WMEX170-114

2

14 1
Ref. No. 1 1 1 1 1 1 1 1 2 2 2 2 3 3 3 3 3 3 3 3 4 5 6 6 Part No. Description Remarks Ref. No. 6 6 6 6 6 6 6 6 3-019-940-21 LID, BATTERY CASE(GREEN) (EX172:AEP,FR,E,9E) 3-019-940-31 LID, BATTERY CASE(RED) (EX172:AEP,FR,E,9E) 3-019-850-01 CABINET (FRONT)(BLACK)(SILVER) (EX170:CND,AEP,FR,EE/EX172:AEP,EE,FR) 3-019-850-11 CABINET (FRONT)(BLUE)(EX172:AEP,FR) 3-019-850-21 CABINET (FRONT)(GREEN)(EX172:AEP,FR) 3-019-850-31 CABINET (FRONT)(RED)(EX172:AEP,FR) 3-019-850-51 CABINET (FRONT)(BLACK)(SILVER) (EX170:E,9E/EX172:E,6E,9E) 3-019-850-61 CABINET (FRONT)(BLUE)(EX172:E,9E) 3-019-850-71 CABINET (FRONT)(GREEN)(EX172:E,9E) 3-019-850-81 CABINET (FRONT)(RED)(EX172:E,9E) 3-019-939-01 3-019-949-01 3-019-847-01 3-019-847-11 SPRING (CASSETTE HOLDER) SPRING (TORSION) HOLDER, CASSETTE(BLACK)(EX170) HOLDER, CASSETTE(BLUE) (EX170:CND,AEP,EE,E,9E) 7 7 8 8 9 10 10 11 12 12 13 14 15 15 16 Part No. Description Remarks 3-019-852-01 CABINET (REAR)(BLACK)(SILVER) (EX170:CND,AEP,FR,EE/EX172:AEP,EE,FR) 3-019-852-11 CABINET (REAR)(BLUE)(EX172:AEP,FR) 3-019-852-21 CABINET (REAR)(GREEN)(EX172:AEP,FR) 3-019-852-31 CABINET (REAR)(RED)(EX172:AEP,FR) 3-019-852-51 CABINET (REAR)(BLACK)(SILVER) (EX170:E,9E/EX172:E,6E,9E) 3-019-852-61 3-019-852-71 3-019-852-81 3-019-940-01 3-019-940-11 CABINET (REAR)(BLUE)(EX172:E,9E) CABINET (REAR)(GREEN)(EX172:E,9E) CABINET (REAR)(RED)(EX172:E,9E) LID, BATTERY CASE(BLACK)(SILVER) LID, BATTERY CASE(BLUE) (EX172:AEP,FR,E,9E) 3-019-847-21 HOLDER, CASSETTE(GREEN) (EX170:CND,AEP,EE,E,9E) 3-019-847-31 HOLDER, CASSETTE(RED) (EX170:CND,AEP,EE,E,9E) 3-019-847-41 HOLDER, CASSETTE(SILVER) (EX170:CND,AEP,EE,E,9E) 3-019-848-01 HOLDER, CASSETTE(BLACK)(EX172) 3-019-848-11 HOLDER, CASSETTE(BLUE) (EX172:AEP,FR,E,9E) 3-019-848-21 HOLDER, CASSETTE(GREEN) (EX172:AEP,FR,E,9E) 3-019-848-31 HOLDER, CASSETTE(RED) (EX172:AEP,FR,E,9E) 3-019-848-41 HOLDER, CASSETTE(SILVER) (EX172:AEP,FR,E,9E) 3-019-947-01 BUTTON (ROTARY)(BLACK)(EX172) 3-019-947-11 BUTTON (ROTARY)(EXCEPT BLACK)(EX172) 3-019-945-01 3-019-853-01 3-019-946-01 3-019-863-01 3-022-655-01 3-022-656-01 1-475-439-11 1-475-441-11 3-022-346-01 3-318-203-92 BUTTON (MEGA BASS)(EX172) KNOB (MEGA BASS)(EX170) BUTTON (DOLBY)(EX172) ACTUATOR (A)(EX170) ACTUATOR (B)(EX172) ACTUATOR (C)(EX172) MEGA BASS UNIT (SWITCH) (EX170) MEGA BASS UNIT (DOLBY) (EX172) LENS SCREW (B1.7X9), TAPPING

3-025-244-01 COVER(EX170) 3-025-245-01 COVER(EX172) 3-025-246-01 COVER(EX172)

-- 18 --

6-2. MAIN BOARD SECTION

MT-WMEX170-114

54 55 56 57 58

53

52

51

Ref. No. 51 52 52 52 52 52 52

Part No. 3-015-285-01 A-3021-030-A A-3021-008-A A-3021-040-A A-3021-041-A

Description

Remarks

Ref. No. 53 54 55 56 57 58

Part No. 3-019-950-01 3-019-944-01 3-019-943-01 3-019-941-01 3-019-942-01

Description TERMINAL (+),BATTERY BUTTON (STOP) BUTTON (REW) BUTTON (PLAY) BUTTON (FF)

Remarks

SCREW (M1.4),TOOTHED LOCK (WH) MAIN BOARD, COMPLETE(EX170:E,9E) MAIN BOARD, COMPLETE(EX170:CND,AEP,EE) MAIN BOARD, COMPLETE(EX172:E,6E,9E) MAIN BOARD, COMPLETE(EX172:FR)

A-3021-039-A MAIN BOARD, COMPLETE(EX172:AEP,EE) A-3021-031-A MAIN BOARD, COMPLETE(EX170:FR)

3-018-977-01 TERMINAL (-),BATTERY

-- 19 --

6-3. MECHANISM SECTION-1 (MT-WMEX170-114)

104

HP901

102 103

105

106

M901

101

Ref. No. 101 102 103 104 105

Part No. 3-013-560-11 3-703-816-31 3-019-776-01 3-703-816-73 X-3369-749-1

Description BELT SCREW (M1.4), SPECIAL HEAD GEAR (REEL-S) SCREW (M1.4), SPECIAL HEAD PINCH LEVER (N) ASSY

Remarks

Ref. No. 106 M901 HP901

Part No.

Description

Remarks

3-920-996-01 SPRING (PINCH N) 1-763-073-11 MOTOR 1-500-517-11 HEAD, MAGNETIC (PLAYBACK)

-- 20 --

6-4. MECHANISM SECTION-2 (MT-WMEX170-114)

159 160 158 161 162 163 164 155 157 165 154 156

166

153 152 151

167

Ref. No. 151 152 153 154 155 156 157 158 159 160

Part No. 3-921-797-01 3-921-003-01 3-938-628-01 3-019-773-01 X-3374-598-1 3-022-093-01 3-022-094-01 3-019-777-01 3-728-091-01 3-019-778-01

Description WASHER BEARING SPRING (PLAY-CP) GEAR (AS) CLUTCH ASSY (S) SPRING (FR-S) SPRING (STOP-S) LEVER (OW-S), DETECTION WASHER, STOPPER SLEEVE (MS)

Remarks

Ref. No. 161 162 163 164 165 166 * 167

Part No. 3-921-335-01 3-920-990-01 3-019-774-01 X-3369-747-1 3-019-775-01

Description WASHER, LEVER SPRING (UD), COMPRESSION GEAR (BS) WHEEL ASSY (SP), CAPSTAN GEAR (DS)

Remarks

3-014-709-01 SPRING (FR LEVER OW) X-3374-601-1 CHASSIS ASSY (GL-OS)

-- 21 --

MAIN
NOTE:
When indicating parts by reference number, please include the board name.

SECTION 7 ELECTRICAL PARTS LIST
· Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. CAPACITORS: uF: µF RESISTORS All resistors are in ohms. METAL: metal-film resistor METAL OXIDE: Metal Oxide-film resistor F: nonflammable · · COILS uH: µH SEMICONDUCTORS In each case, u: µ, for example: uA...: µA... , uPA... , µPA... , uPB... , µPB... , uPC... , µPC... , uPD..., µPD... Abbreviation CND : Canadian. EE : East European. FR : French. 6E : Central and South America. 9E : Country of origin is not shown. Description 1uF 0.001uF 1uF 2.2uF 0.22uF 10% 10% Remarks 16V 50V 16V (EX172) 16V (EX172) 16V (EX172) 16V (EX172) 50V 25V 6.3V 25V 10V 16V 50V 25V (EX170) 25V (EX172) 16V 25V (EX170) 16V (EX172) 25V (EX170) 25V (EX172) 16V 6.3V 50V (EX170) 50V (EX170) 50V (EX172) 50V 50V (EX170) 50V (EX172) 50V (EX170) 50V (EX172)

·

·

Due to standardization, replacements in the · parts list may be different from the parts specified in the diagrams or the components · used on the set. -XX, -X mean standardized parts, so they may have some difference from the original one.

·

Ref. No.

Part No.

Description

Remarks

Ref. No. C207 C208 C231 C232 C233

Part No.

A-3021-008-A MAIN BOARD, COMPLETE(EX170:CND,AEP,EE) ********************* A-3021-030-A MAIN BOARD, COMPLETE(EX170:E,9E) ********************* A-3021-031-A MAIN BOARD, COMPLETE(EX170:FR) ********************* A-3021-039-A MAIN BOARD, COMPLETE(EX172:AEP,EE) ********************* A-3021-040-A MAIN BOARD, COMPLETE(EX172:E,6E,9E) ********************* A-3021-041-A MAIN BOARD, COMPLETE(EX172:FR) ********************* 3-018-977-01 TERMINAL (­), BATTERY 3-019-950-01 TERMINAL (+), BATTERY < CAPACITOR > C101 C101 C103 C104 C105 1-163-005-11 CERAMIC CHIP 1-163-007-11 CERAMIC CHIP 1-163-017-00 CERAMIC CHIP 1-126-157-11 ELECT 1-164-005-11 CERAMIC CHIP 470PF 680PF 10% 10% 50V (EX170) 50V (EX172) 50V 16V 25V (EX170) 50V (EX170) 100V (EX172) 16V 50V 16V (EX172) 16V (EX172) 16V (EX172) 16V (EX172) 50V (EX170) 50V (EX172) 50V 16V 25V (EX170) 50V (EX170) 100V (EX172)

1-164-346-11 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-164-346-11 CERAMIC CHIP 1-164-505-11 CERAMIC CHIP 1-164-489-11 CERAMIC CHIP

C234 C301 C302 C303 C304 C305 C306 C308 C309 C309

1-164-346-11 CERAMIC CHIP 1-163-009-11 1-163-038-91 1-126-153-11 1-164-222-11 1-126-176-11 1-164-346-11 1-126-162-11 1-163-809-11 CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP ELECT CERAMIC CHIP ELECT CERAMIC CHIP

1uF 0.001uF 0.1uF 22uF 0.22uF 220uF 1uF 3.3uF 0.047uF 0.1uF 10% 20%

20% 20% 10% 10%

1-164-004-11 CERAMIC CHIP

C310 C311 C311 C312 C312

1-164-346-11 CERAMIC CHIP 1-164-005-11 CERAMIC CHIP 1-164-346-11 CERAMIC CHIP 1-163-809-11 CERAMIC CHIP 1-164-004-11 CERAMIC CHIP

1uF 0.47uF 1uF 0.047uF 0.1uF 10% 10%

0.0047uF 5% 10uF 20% 0.47uF

C106 C106 C107 C108 C131

1-163-009-11 CERAMIC CHIP 1-164-161-11 CERAMIC CHIP 1-164-346-11 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-164-346-11 CERAMIC CHIP

0.001uF

10%

0.0022uF 10% 1uF 0.001uF 1uF

C314 C315 C316 C317 C317

1-164-346-11 CERAMIC CHIP 1-126-153-11 ELECT 1-163-009-11 CERAMIC CHIP 1-163-117-00 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP

1uF 22uF 0.001uF 100PF 0.001uF

20% 10% 5% 10%

10%

C132 C133 C134 C201 C201

1-164-505-11 CERAMIC CHIP 1-164-489-11 CERAMIC CHIP 1-164-346-11 CERAMIC CHIP 1-163-005-11 CERAMIC CHIP 1-163-007-11 CERAMIC CHIP

2.2uF 0.22uF 1uF 470PF 680PF 10% 10% 10%

C318 C319 C319 C322 C322

1-163-009-11 CERAMIC CHIP 1-163-117-00 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-163-117-00 CERAMIC CHIP

0.001uF 100PF 0.001uF 0.001uF 100PF

10% 5% 10% 10% 5%

C203 C204 C205 C206 C206

1-163-017-00 CERAMIC CHIP 1-126-157-11 ELECT 1-164-005-11 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-164-161-11 CERAMIC CHIP

0.0047uF 5% 10uF 20% 0.47uF 0.001uF 10%

0.0022uF 10%

-- 22 --

MAIN
Ref. No. C323 C324 C324 C331 C332 Part No. Description 0.001uF 0.001uF 0.1uF 1uF 0.47uF 10% 10% Remarks 50V 50V (EX170) 25V (EX172) 16V (EX172) 25V (EX172) 50V (EX172) 16V (EX172) 25V 16V 10V 25V 25V 16V 25V 16V 16V Ref. No. JR313 JR314 JR315 JR316 JR317 JR318 JR319 JR320 JR321 JR322 JR323 JR324 Part No. 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 Description SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT 0 0 0 0 (EX172) 0 (EX172) 0 (EX172) 0 (EX172) 0 (EX172) 0 (EX172) 0 (EX172) 0 (EX172) 0 (EX172) Remarks 1-163-009-11 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-163-038-91 CERAMIC CHIP 1-164-346-11 CERAMIC CHIP 1-164-005-11 CERAMIC CHIP

C333 C334 C601 C602 C603 C605 C606 C607 C608 C609 C610

1-163-009-11 CERAMIC CHIP 1-126-157-11 ELECT 1-164-344-11 CERAMIC CHIP 1-107-823-11 CERAMIC CHIP 1-126-176-11 ELECT 1-164-344-11 1-164-344-11 1-164-489-11 1-163-809-11 1-164-505-11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP

0.001uF 10uF 0.068uF 0.47uF 220uF 0.068uF 0.068uF 0.22uF 0.047uF 2.2uF 0.47uF

10% 20% 10% 10% 20% 10% 10% 10% 10%

1-216-296-91 SHORT 1-216-296-91 SHORT

< RESISTOR > R101 R103 R104 R105 R106 1-216-089-91 1-216-079-00 1-216-075-00 1-216-117-00 1-216-043-91 RES,CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP 47K 18K 12K 680K 560 5% 5% 5% 5% 5% 1/10W 1/10W 1/10W 1/10W 1/10W (EX170)

1-107-823-11 CERAMIC CHIP < CONNECTOR >

10%

R106 R107 R107 R107 R107

1-216-046-00 METAL CHIP 1-216-003-11 RES,CHIP

750 12

1/10W (EX172) 5% 1/10W (EX170:E,9E)

5%

L CN301 L CN302 * CN302

1-750-346-21 CONNECTOR, FFC/EPC (ZIF) 6P 1-750-346-21 CONNECTOR, FFC/EPC (ZIF) 6P (EX170) 1-784-527-11 CONNECTOR, FPC (ZIF) 9P (EX172) < DIODE >

1-216-295-91 SHORT 0 (CND,AEP,EE) 1-216-311-00 METAL CHIP 6.8 5% 1/10W (EX172:E,6E,9E) 1-216-001-00 RES,CHIP 10 5% 1/10W (FR) 1-216-095-00 METAL CHIP 1-216-107-00 METAL CHIP 1-216-049-91 RES,CHIP 1-216-174-00 RES,CHIP 1-216-053-00 METAL CHIP 1-216-089-91 1-216-079-00 1-216-075-00 1-216-117-00 1-216-043-91 RES,CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP 82K 270K 1K 100 1.5K 47K 18K 12K 680K 560 1/10W (E,6E,9E) 5% 1/10W (CND,AEP,EE,FR) 5% 1/10W 5% 1/8W 5% 1/10W 5% 5% 5% 5% 5% 1/10W 1/10W 1/10W 1/10W 1/10W (EX170) 5%

D150

8-719-067-62 DIODE LNJ210C6AOSO < IC >

R109 R109 R110 R111 R150 R201 R203 R204 R205 R206

IC301 IC301 IC331 IC601

8-759-285-29 8-759-332-69 8-759-488-80 8-759-447-73

IC IC IC IC

LA4582CM (EX170) LA4585M-TLM (EX172) NJM2185AV-TE2 (EX172) LB1979V-TLM

< JACK > J301 J302 1-750-061-11 JACK,DC(POLARITY UNIFIED TYPE)(DC IN 3V) (E,6E,9E) 1-565-287-11 JACK(PHONES) < JUMPER RESISTOR > JR10 JR201 JR202 JR301 JR302 JR303 JR304 JR305 JR306 JR307 JR308 JR309 JR310 JR311 JR312 1-216-295-91 1-216-295-91 1-216-295-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 1-216-296-91 SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT 0 (EXCEPT E,6E,9E) 0 0 (EX172) 0 0 0 0 0 0 0 (EX172) 0 0 0 0 0 (EX170)

R206 R207 R207 R207 R207

1-216-046-00 METAL CHIP 1-216-003-11 RES,CHIP

750 12

1/10W (EX172) 5% 1/10W (EX170:E,9E)

5%

1-216-295-91 SHORT 0 (CND,AEP,EE) 1-216-311-00 METAL CHIP 6.8 5% 1/10W (EX172:E,6E,9E) 1-216-001-00 RES,CHIP 10 5% 1/10W (FR) 1-216-095-00 METAL CHIP 1-216-107-00 METAL CHIP 1-216-049-91 RES,CHIP 1-216-025-91 RES,CHIP 1-216-049-91 RES,CHIP 1-216-081-00 METAL CHIP 82K 270K 1K 100 1K 22K 1/10W (E,6E,9E) 5% 1/10W (CND,AEP,EE,FR) 5% 1/10W 5% 1/10W 5% 1/10W 5% 1/10W 5%

R209 R209 R210 R211 R301 R305

-- 23 --

WM-EX170/EX172 MAIN
Ref. No. R306 R306 R309 R324 R324 Part No. Description 15K 2.2K 470K 100 2.2 5% 5% 5% 5% 5% Remarks 1/10W (EX170) 1/10W (EX172) 1/10W 1/10W (EX170) 1/10W (EX172) 1/10W (EX172) 1/10W (EX172) 1/10W (EX172) 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W Ref. No. Part No. Description Remarks 1-216-077-00 METAL CHIP 1-216-057-00 METAL CHIP 1-216-113-00 METAL CHIP 1-216-025-91 RES,CHIP 1-216-298-00 METAL CHIP ACCESSORIES & PACKING MATERIALS ******************************* 1-505-521-11 HEADPHONES (MDR-023)(EXCEPT E,6E,9E) 3-022-755-01 CLIP, BELT 3-861-488-11 MANUAL, INSTRUCTION(ENGLISH/FRENCH) (CND,EE) 3-861-488-21 MANUAL, INSTRUCTION (ENGLISH/GERMAN/SPANISH/DUTCH/FRENCH /ITALIAN/PORTUGUESE/FINNISH)(AEP) 3-861-488-31 MANUAL, INSTRUCTION(FRENCH)(AEP,FR) 3-861-488-41 MANUAL, INSTRUCTION (GERMAN/POLISH/RUSSIAN/HUNGARIAN /BULGARIAN/CZECH/GREEK/TURKISH)(EE) 3-861-488-51 MANUAL, INSTRUCTION (ENGLISH/CHINESE/KOREAN)(E) 3-861-488-61 MANUAL, INSTRUCTION (SPANISH/PORTUGUESE)(6E) 3-861-488-71 MANUAL, INSTRUCTION (ENGLISH/CHINESE/KOREAN)(9E) 8-953-224-90 HEADPHONE MDR-E802LP//K SET(E,6E,9E)

R331 R332 R333 R601 R602 R603 R604 R605 R606 R607 R608

1-216-001-00 METAL CHIP 1-216-081-00 METAL CHIP 1-216-688-11 METAL CHIP 1-216-121-91 RES,CHIP 1-216-121-91 RES,CHIP 1-216-121-91 1-216-073-00 1-216-049-91 1-216-097-91 1-216-073-00 RES,CHIP METAL CHIP RES,CHIP RES,CHIP METAL CHIP

10 22K 36K 1M 1M 1M 10K 1K 100K 10K 1K

5% 5% 0.5% 5% 5% 5% 5% 5% 5% 5% 5%

1-216-049-91 RES,CHIP

< VARIABLE RESISTOR > RV301 RV601 1-225-544-11 RES, VAR, CARBON 10K/10K(VOLUME) 1-238-663-11 RES, ADJ, CARBON 4.7K < SWITCH > S302 S303 S305 1-762-917-11 SWITCH, DETECTION (SMALL TYPE)(POWER) 1-692-298-11 SWITCH, SLIDE(TAPE SELECTOR) 1-692-298-11 SWITCH, SLIDE(AVLS) < THERMISTOR > TH601 1-810-794-11 THERMISTOR, POSITIVE ************************************************************ MISCELLANEOUS ************* 11 1-475-439-11 MEGA BASS UNIT (SWITCH) (EX170) 11 1-475-441-11 MEGA BASS UNIT (DOLBY) (EX172) HP901 1-500-517-11 HEAD, MAGNETIC (PLAYBACK) M901 1-763-073-11 MOTOR ************************************************************

Sony Corporation
9-923-335-11
Personal A&V Products Company

-- 24 --

98B1683-1 Printed in Japan © 1998.2 Published by Quality Engineering Dept. (Shibaura)