WM-EX20

SERVICE MANUAL

Ver 1.0 1999. 08
US Model Canadian Model AEP Model UK Model E Model Australian Model Tourist Model
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-WMEX20-162

SPECIFICATIONS
Tape section Frequency response (Dolby NR off) Output Supplied accessories Playback: 30 18,000 Hz Headphones (REMOTE 2 jack) Load impedance Battery case (1) Stereo earphones with remote control (1) Battery charger (1) US, CND model : BC-7DC AEP, FR model : BC-7DY E, JE model : BC-7HT UK model : BC-7S AUS model : BC-7SG KR model : BC-9HR Rechargeable battery (1) US, CND, AEP, UK, FR, AUS model : NC-6WM, 1.2V, 600mAh, Ni-Cd KR, E, JE model: NH-14WM, 1.2V, 1400mAh, Ni-MH Rechargeable battery carrying case (1) Carrying pouch (1) E, JE, model: AC plug adaptor (1)
General Power requirements

Dimensions (w/h/d)

1.5 V One rechargeable battery or one R6 (size AA) battery Approx. 78.7 108.6 18.7 mm (31/8 43/8 3/4 inches), incl. projecting parts and controls Approx. 180 g (6.4 oz) Approx. 240 g (8.5 oz) (incl. rechargeable battery and a cassette)
Design and specifications are subject to change without notice Abbreviation CND : Canadian model FR : French model AUS : Australian model KR : Korea model JE : Tourist model

CASSETTE PLAYER

MICROFILM

SECTION 1 GENERAL

TABLE OF CONTENTS 1. GENERAL 2 2. SERVICE NOTE 3 3. DISASSEMBLY
3-1. Lid Assy, Cassette 5 3-2. Case 5 3-3. Ornament (Open) Block Assy 6 3-4. Sub Board, Switch, Leaf, Main Board 6 3-5. Belt (F KAI), Motor (M601) 7 3-6. Holder Assy 7 3-7. Pinch Lever (N)/(R) Assy 8 3-8. Magnetic Head (HP701) 8 This section is extracted from instruction manual.
4. MECHANICAL ADJUSTMENT 9 5. ELECTRICAL ADJUSTMENT 9 6. DIAGRAMS
6-1. Block Diagram 10 6-2. Printed Wiring Board 12 6-3. Schematic Diagram (1/2) 15 6-4. Schematic Diagra (2/2) 18 6-5. IC Block Diagrams 21 6-6. IC Pin Function Discription VOL knob 2 REMOTE jack Operation button HOLD/OPERATION knob OPEN knob Dry battery case contact Rechargeable battery compartment

7. EXPLODED VIEWS

7-1. Cabinet Block, Main Board 25 7-2. Mechanism Deck Block 26
8. ELECTRICAL PARTS LIST 27
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. Flexible Circuit Board Repairing Keep the temperature of soldering iron around 270C 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.
SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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 PUBLISHED BY SONY.

0 ! ! ! ! ! !

Headphones plug DISPLAY window SOUND button MODE button HOLD button 9((PLAY), p(STOP), button FF button REW button VOL knob
ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPMENTS PUBLIS PAR SONY.

SECTION 2 SERVICE NOTE

[Service Mode]
The service mode enables to operate the mechanism of WM-EX20 while the MAIN board is opened. Rotation of the idler gear (A) (S side) is detected using the photoreflector (PH702) in the WM-EX20. PH702 is located on the MAIN board, therefore the rotation of the idler gear (A) (S side) cannot be detected by PH702 when the MAIN board is removed. As a result, the motor cannot be controlled and cannot run correctly. To repair the machine after the MAIN board is removed while the main power is turned on, follow the procedures as described below. 1. Setting 1) Remove the cabinets referring to section 3. DISASSEMBLY. Open the MAIN board. 2) Connect the motor (M601) and the plunger solenoid (PM701) to the MAIN board using the jumper wires. When the extension jig (1-769-143-11) (10 wires as a set) is used, they can be connected easily. 3) Short the TAPE IN switch land (BP1) with solder. Input a square (or sine) wave of 10 Hz (at 1.3 Vp-p) to both PH IN T land (TP37) and PH IN S land (TP36) with jumper wire. 4) Connect DC 1.3 V from external regulated power supply to and terminals of the battery. 2. PRE-SET status The set must be in this state before the PLAY, FF and REW modes can be entered. 1) Make sure that the slider (F/R) is in the center position and that the F/R switch (S702) is in the center position. Make sure that the reel gear does not rotate by rotating the flywheel on the F side clockwise. If improper, place the set in the preset state according to the following instructions: 2) Repeat the step below some times to ensure the above conditions. * Pull away the trigger level from the plunger with tweezers or other means. Then rotate the flywheel on the F side clockwise. 3) Turn the stabilized power supply OFF once and then ON.

3. FF, REW modes 1) Check for 2. Preset state and push the FF switch and the REW switch. 2) Move the F/R switch (S702) to the movement of the slider to enter the FF/REW mode. 4. PLAY mode 1) Check for 2. Preset state. 2) Push the 9( switch on the remote commander to move the lever (SW) toward the R side. With timing to this, move the F/ R switch (S702) to enter the PLAY (R side) mode. Note 1: If failed, retry from the preset state. Note 2: The 9(, p, FF, and REW switches on the remote commander should be used whenever possible.

MAIN BOARD (SIDE B)

TAPE IN SWITCH (S704-1) ATS SWITCH (S704-2) Plunger (PM701) AF OSC

Battery terminal

Square wave (sine wave) 10 Hz, -3.5 dBs
S PH IN(S)(TP36) T PH IN(S)(TP37) jumper

M M601

(S702) FWDCNTREV

[ Slider (NR) ]

slider (NR)

F side flywheel

F side

center

R side
[ Rotational system ] 1. Rotational System of PLAY Mode
gear (reel) (T side) idler gear (A) (S side) gear (reel) (S side) idler gear (A) (T side) motor pulley gear (NR) FWD REV
2. Rotational System of FF Mode
gear (reel) (T side) idler gear (A) (T side) gear (FR) motor pulley

gear (Y)

clutch assy (F) idler gear (B)

clutch assy (F)

insert flywheel (N)
insert flywheel (R) reverse pulley
3. Rotational System of REW Mode
idler gear (A) (S side) gear (reel) (S side) gear (FR) motor pulley

SECTION 3 DISASSEMBLY

The equipment can be removed using the following procedure.
Set Lid Assy, Cassette Case Ornament (OPEN) Block Assy "Sub Board", "Switch, Leaf", "Main Board" Belt (F1), Motor (M601)

Note :

Holder Assy Pinch Lever (N)/(R) Assy Follow the disassembly procedure in the numerical order given.

Magnetic Head (HP701)

3-1. LID ASSY, CASSETTE

Lid assy, cassette

1 Two screws (M1.4 2.2)

Screw (M1.4 2.2)

3-2. CASE

Mechanism deck block

3 Two screws (M1.4 2.2)

2 Two screws (M1.4 2.2)

4 Screw (M1.4 1.6)

1 Lid, battery case

3-3. ORNAMENT (OPEN) BLOCK ASSY
1 Release the two claws from the two holes in the direction allow
Ornament (open) block assy

3-4. SUB BOARD, SWITCH, LEAF, MAIN BOARD
4 Unsolder the 6 places. qs Claw 1 Screw 7 Screw (M1.4) 8 Switch leaf 9 Unsolder the plunger. 5 Screw (M1.4) 6 SUB board 3 Screw (M1.4 1.4)
0 Unsolder the flexible board. qd MAIN board qa Unsolder the motor. 2 Screw (M1.4)
3-5. BELT (F KAI), MOTOR (M601)
1 Belt (F KAI) 2 Two screws (M1.4)

4 Motor (M601)

Belt (F KAI)

3 Retainer (F1) motor

3-6. HOLDER ASSY

4 Screw (M1.4)

7 Bracket (casette) assy 5 Lock lever (S) 8 Remove soldering from Head flexible board.
9 Head flexible board 2 Shaft
0 Remove the holder assy in the direction of the arrow.

6 Shaft

3 Lock lever (B) 1 Two screws (M1.4 1.4)
3-7. PINCH LEVER (N)/(R) ASSY
2 Remove the pinch lever (N) assy in the direction of the arrow. Note: Be careful of the claw
1 Remove the pinch lever (R) assy in the direction of the arrow. Note: Be careful of the claw
3-8. MAGNETIC HEAD (HP701)
1 Remove the magnetic head (HP701) in the direction of the arrow.
SECTION 4 MECHANICAL ADJUSTMENTS

PRECAUTION

1. Clean the following parts with a denatured-alcohol-moistened swab : playback head pinch roller capstan rubber belt Demagnetize the playback head with a head demagnetizer. Do not use a magnetized screwdriver for the adjustments. After the adjustments, apply suitable locking compound to the parts adjusted. The adjustments should be performed with the rated power supply voltage (1.3 V) unless otherwise noted.
SECTION 5 ELECTRICAL ADJUSTMENT
6-1. BLOCK DIAGRAM PRECAUTION
Supplied voltage : 1.3 V Switch and control position VOL switch : NORM Remote control position HOLD switch : OFF VOL control : MAX SOUND mode : NORM DOLBY mode : OFF Test tape Type WS-48A Signal 3 kHz, 0 dB Used for tape speed adjustment
HP701 (PLAYBACK) FWD L L CH FWD R CH REV L L CH REV R CH REF V REV R FWD R 1 L AUDIO AMP IC301 (1/2) +

SECTION 6 DIAGRAMS

DOLBY AMP IC303 PRE OUT L PRE NF L METAL SWITCH Q313(1/2) 1

SURROUND AMP IC28 PW IN L
AUDIO AMP IC301 (2/2) PW OUT L JGND REMO DATA VCC REMOTE + RIPPLE FILTER RF OUT 17 REMOTE SWITCH QRIPPLE FILTER Q305 + AGC DET +

VREF MTL DRV

SWITCH

BEEP AMS OUT

M/N SW F/R SW BST SW PW SW MT SW
Torque Measurement Mode FWD FWD back tension REV REV back tension FF, REW CQ-102RC CQ-102C Torque Meter Meter Reading g cm (0.21 0.35 oz inch) less than 2 g cm (less than 0.03 oz inch) g cm (0.21 0.35 oz inch) less than 2 g cm (less than 0.03 oz inch) more than 50 g cm (more than 0.69 oz inch) 1.

AMS DET

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

frequency counter 32 set

i REMOTE jack (J301)
S704 -1 (TAPE IN) -2 (ATS) X701 4kHz

CQ-201B

Playback WS-48A (tape center part) in the REV state and adjust RV601 so that the frequency counter reading becomes 3,000 Hz.
Specification Value : Digital frequency counter 2,985 to 3,015 Hz 2. Playback WS-48A (tape counter part) in the FWD state. Check that frequency counter reading is within 2.5% of reading of step 1.
CAPSTAN /REEL MOTOR M601 TU TV TW

Adjustment Location :

W V U 31 W OUT 32 V OUT 34 U OUT 19 MCENTER 2 MC

Signal path : PB

2. 3. 4.
L PRE OUT R PRE NF R BEEP AMS IN
10 VOL MAX SWITCH Q307 VOL MIN SWITCH Q308,10 VCC 9 SURROUND SWITCH Q304 B+ (+2.0V) 26 B+ (+2.0V) DOLBY SWITCH Q311 B+ (+2.0V) SURROUND SWITCH Q306 27

PW NF L PW IN R

PW OUT R

METAL SWITCH Q313(2/2)

DOLBY SWITCH Q312

14 VCC

SWITCH Q309

PW NF R

PW Q314 INV.

S301 VOLUME MIN NORM MAX

REVIVE CONTROL Q303

HI UP CONTROL Q301

PW IN C

PW OUT C

16 DOLBY CTL 40 AMS IN 47 BEEP 55 BOOST CTL 30 F/R CTL XO XI
SURRUND CTL 24 HI UP CTL SYSTEM CONTROL IC702 RV CTL 15 REVIVE CONTROL Q302

AGC IN

DATA OUT 41
48 CASSETE SW 31 MUTE CTL 33 M/N CTL PM CTL PHOTO (T) CTL T REEL SENS PH701 INV. Q705,PHOTO (T) IN PLUNGER DRIVER Q701,704 RMUM 37

B+ (+1.5V)

MOTOR SERVO IC601

RESET 3 IC705

TU 8 TV 10 TW UT 13 VT 9 WT UT 29 VT 30 WT S REEL SENS PH702 RV601 TAPE SPEED ICIINV. Q705,706
20 PHOTO (S) CTL A/B SW PHOTO (S) IN MD SW 60

C S301 VOLUME MIN NORM MAX TW TV M601 CAPSTAN/REEL MOTOR

S701 (A/B)

HP701 (PLAYBACK )

1-674-82211 (11)

L CH FWD R CH R CH REV L CH

1-674-822-

Note on Printed Wiring Board: Y : parts extracted from the conductor side. z : Through hole. b : Pattern from the side which enables seeing. Caution: Pattern face side: (Side A) Parts face side: (Side B) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

FLEXIBLE BOARD

Abbreviation CND : Canadian model AUS : Austrarian model FR : French model KR : Korean model JE : Tourist model
6-3. SCHEMATIC DIAGRAM MAIN (1/2) SECTION
Refer to page 21, 22 for IC Block Diagrams.

Waveform

1 IC601 456

4 Q605 135

150 Hz

0.5V/div 2sec/div

0.5V/div 5sec/div

2 IC601 0

5 Q605 80!

444 Hz

0.5V/div 1sec/div

3 IC601 @@#

0.2V/div 5sec/div
Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 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. f : internal component. C : panel designation. U : B+ Line. H : adjustment for repair. Power voltage is dc 1.5 V and fed with regulated dc power supply from battery terminal. 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. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. E : PB Abbreviation CND : Canadian model. AUS : Australian model. JE : Tourist model. FR : French model. KR : Korea model.
6-4. SCHEMATIC DIAGRAM MAIN (2/2) SECTION
Refer to page 21, 22 for IC Block Diagrams. Refer to page 23, 24 for IC Pin Function Description.

6 IC701 3

100 kHz

1V/div 5sec/div

7 IC702 8

1V/div 0.2sec/div

Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 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. f : internal component. C : panel designation. U : B+ Line. H : adjustment for repair. Power voltage is dc 1.5 V and fed with regulated dc power supply from battery terminal. 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. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Abbreviation CND : Canadian model. AUS : Australian model. JE : Tourist model. FR : French model. KR : Korea model.

0.7 1.3

6-5. IC BLOCK DIAGRAMS
AGC DET AGC IN BST OUT PW IN L PW IN R PW NF R PW NF L PW IN C LPF BST NF
M CENTER 18 GND 17 VIRF IN 23 PW GND VI BUFFER COMPARATOR 16 VI1

AGC DET

CAMP SW 37 MT TC 38 BEEP 39 AMS OUT 40 NT SW PW SW BST SW F/R SW PRE SW 45 BEEP

PWC PWB

UT 28 VT 29 WT 30

I SOFT

PGND FC

IC301 TA2123AF

IC601 LB1994M

CT2 CT1

15 IV BUFFER 14 VC

22 PW OUT R 21 PW OUT C

P-SIG 20 PW OUT L 19 VCC RIPPLE FILTER 18 BASE 13 RF OUT GND AMS DET AMS MIX AMS IN

COMPARATOR

M/N SW 46 PRE GND 47 VREF IN 48 VREF

FWD IN-L

FWD IN-R

REF OUT

REV IN-R

REV IN-L

PRE NF-L

PRE OUT-L

MTL DRV-L

MTL DRV-R

PRE OUT-R

PRE NF-R

AMS IN

U IN V IN W IN

IC303 NJM2185AV
Vcc 14 SW 13 VEXT 12 IN A 11 OUT A 10 DC A 9 DET A 8

IC701 XC6372A211PR

VLx LIMITER BUFFER PWM/PFM CONTROL OSC 50/100/180 kHz
SLOW START V REF PHASE COMP 2 V OUT

IC703 MM1305BWBE

G2 SUN
WEIGHT BIAS CIRCUIT ACH BLOCK GM +

OUT 1 1

BCH BLOCK (SAME ACH)

OUT 2 2

2 IREF

3 VREF

5 OUT B

6 DC B

7 DET B

OUT 3 3

6 RIPPLE +

11 BYPASS SRS

OUT + 5 GND

+ EXT FILTER

MATRIX

BIAS SRS

MODE CONTROL 1

BYPASS

IC302 NJM2190V

+ PREB

POWER W OUT V OUT NC U OUT US VS CURRENT AMP

11 Vref

MTL DRV
SOFT CLIP 10 P SIG CTRL BLOCK DECODER PWSW
6-6. IC PIN FUNCTION DESCRIPTION
IC702 MB89135LPFV (SYSTEM CONTROL)
Pin No. 5 6, 11, 38, 43 44, Pin Name AVCC RST MODE0 MODE1 X0 NC X1 VCC X0A NC X1A HI UP CTL RV CTL DOLBY CTL NC AMS OUT PM CLT PHOTO(S)CTL NC PHOTO(T)CTL POWER CTL SURROUND CTL VSS MOTOR U MOTOR V NC MOTOR W F/R CTL MUTE CTL NC M/N CTL MOTOR START SPEED CTL MOTOR DIR RMUM NC AMS IN DATA OUT PHOTO(S)IN PHOTO(T)IN NC A/B SW BEEP CASSETTE SW NC WAKE UP I/O I I I I O O O O O O O O O O O O O O O O O O O O O I I O I I I O I I Power supply terminal. (A/D) Reset signal input. Test input terminal. (Connect to Vss terminal.) Test input terminal. (Connect to Vss terminal.) Crystal oscillator connection terminal. (4 MHz) Not used. (Open) Crystal oscillator connection terminal. (4 MHz) Power supply pin. Not used. (Open) Not used. (Open) Not used. (Open) Tone select switch signal output. H: HI UP ON Tone select switch signal output. H: REVIVE ON Dolby circuit control signal output. L: ON Not used. (Open) Music with/without detection (AMS) signal output. (H : with, L :without) Plunger control signal output. H : ON Rotational detection intermittent signal output. H : ON Not used. (Open) Rotational detection intermittent signal output. H : ON Audio circuit and DDC control signal output. L : STOP, H : NORMAL Surround circuit control signal output. L : ON Ground Motor control signal output. Motor control signal output. Not used. (Open) Motor control signal output. Head select signal output. L : FWD, H : RVS Audio muting control signal output. L : MUTE ON Not used. (Open) Metal/normal tape select signal output. Motor wake-up signal output. L : wake-up, open : normally Motor speed 1/2 control signal output. L :1/2 speed, H :normally Motor rotational derection control signal output. L :CW, Open :CCW Remote control with/without detection signal input. Not used. (Open) Music with/without detection (AMS) signal input. H : without Communication data signal output. Rotational detectionsignal input. Rotational detectionsignal input. Not used. (Open) Side A/B detection switch dignal input. L :side A, H : side B Beep signal output. Cassette with/without detection switch signal input. L :with, H :without Not used. (Open) Clock make up signal input. Description Pin No. Pin Name P-SIG IN2 P-SIG IN1 CTL2 CTL1 BOOST CTL NC AVss NC AVR MD SW BATT DET1 BATT DET2 KEY IN NC I/O I I O O O I I(A/D) I(A/D) I(A/D) I(A/D) Motor P-SIG signal input. Motor P-SIG signal input. Mode select signal output to Motor servo IC (IC601). Mode select signal output to Motor servo IC (IC601). Tone select switch signal output. L : OFF, Open : BOOSTON Not used. (Open) Ground. (A/D) Non connection Reference voltage input. (A/D) MD mode switch signal input. (FWD/CENTER/RVS mode) Power voltage detection signal input. Power voltage detection signal input. Operation switch signal input. Not used. (Open) Description

SECTION 7 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. Hardware (# mark) list and accessories and packing materials are given in the last of this parts list. Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE). (RED) Parts of Color Cabinets Color Abbreviation CND : Canadian model AUS : Australian model FR : French model KR : Korea model JE : Tourist model

7-1. CASE SECTION

S704 MT-WMEX20-162

Ref. No. 16

Part No. 3-038-057-01 3-345-648-71 3-375-114-41 3-038-056-01 A-3061-994-A A-3061-997-A 3-038-624-01 3-366-892-11 X-3377-726-1 A-3052-056-A 3-038-627-01 4-963-883-51 3-029-220-01 3-365-630-41 X-3377-717-1

Description

Remarks

Ref. No. * 29 S704

Part No. X-3377-780-1 X-3377-779-1 3-704-197-41 3-038-630-01 3-038-630-11 3-038-630-21 3-038-616-01 3-038-615-01 3-704-197-01 3-038-617-01 3-038-625-01 3-038-628-01 1-674-823-11 3-324-509-01 3-031-460-01
Description BRACKET (CASSETTE) ASSY LID ASSY, CASSETTE SCREW (M1.4 2.2) COVER, MD (JE) COVER, MD (AEP,UK,FR) COVER, MD (US,CND,E,KR,AUS) ORNAMENT (CASE) CASE(1680) SCREW (M1.4 1.6), LOCKING KNOB(VOL) WINDOW (CASSETTE), ORNAMENT SHEET (CASSETTE WINDOW) SUB BOARD CUSHION SHEET(BT)
TERMINAL BOARD, BATTERY SCREW(M1.4), TOOTHED LOCK SCREW TERMINAL BOARD (MINUS) (/M) MAIN BOARD, COMPLETE (EXCEPT FR) MAIN BOARD, COMPLETE (FR) LID,BATTERY CASE SCREW(M1.4 1.4) TERMINAL BOARD ASSY (/M) ORNAMENT (OPEN) BLOCK ASSY SHEET (CASE), ADHESIVE SCREW (M1.4), PRECISION PAN SPRING, TENSION SCREW (M1.4) BRACKET ASSY (/M)
3-038-054-01 LEVER (B) (/M), LOCK 3-366-892-01 SCREW (M1.4)
1-762-553-11 SWITCH, LEAF (TAPE IN/ATS)
7-2. MECHANISM DECK BLOCK

Ref. No. 69 70

Part No. X-3377-589-1 X-3377-995-1 X-3377-994-1 3-029-275-01 3-029-278-01 X-3377-037-1 3-386-694-01 3-029-287-11 3-029-281-01 3-029-306-11 3-029-285-01 3-029-282-01 3-029-284-01 X-3376-813-1 3-932-724-21 3-029-286-01 3-038-612-01 3-007-433-01 3-029-283-01 3-029-765-01
Description HOLDER (FA) ASSY LEVER (R2) ASSY, PINCH LEVER (N2) ASSY, PINCH WASHER (STOPPER N) WASHER CHASSIS ASSY (FA) WASHER SPRING (TG), TORSION GEAR, IDLER (B) FLYWHEEL (N), INSERT GEAR, CAM GEAR(Y) LEVER, TRIGGER CLUCH ASSY (F) WASHER GEAR(NR) BELT(F KAI) SHEET (N), REFLECTION GEAR, IDLER (A) SCREW (M1.4), TOOTHED LOCK

Ref. No. 85 M601 HP701 PM701
Part No. 3-029-268-11 3-029-883-01 3-029-273-01 3-010-273-02 3-029-288-01 3-010-954-01 3-010-274-02 3-029-289-01 3-029-276-01 3-007-428-01 3-029-271-11 3-038-611-01 3-038-610-01 3-038-613-01 3-033-757-01
Description FLYWHEEL (R), INSERT RETAINER (F1), MOTOR GEAR(FR) GEAR(REEL) PULLEY, REVERSE SPRING (BT), COMPRESSION TABLE, REEL WASHER WASHER (STOPPER R) WASHER (R) SPRING (HD) SPRING (HD2) LEVER, HEAD SEAL(MOTOR) SHEET(H)
1-763-165-21 MOTOR (CAPSTAN/REEL MOTOR) (WITH PULLY) 1-500-623-31 HEAD, MAGNETIC (PLAYBACK) 1-454-674-31 SOLENOID, PLUNGER
SECTION 8 ELECTRICAL PARTS LIST
NOTE: 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. Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. CAPACITORS: uF: F RESISTORS All resistors are in ohms. METAL: metal-film resistor METAL OXIDE: Metal Oxide-film resistor F: nonflammable COILS uH: H Abbreviation CND : Canadian model AUS : Australian model FR : French model KR : Korea model JE : Tourist model SEMICONDUCTORS In each case, u: , for example: uA.: A. , uPA. , PA. , uPB. , PB. , uPC. , PC. , uPD., PD.
When indicating parts by reference number, please include the board name. The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi.

Ref. No.

Part No.
Ref. No. C323 C324 C325 C326 C327 C328 C329 C601 C602 C603 C604 C605 C606 C607 C608 C609 C610 C611 C612 C701 C702 C703 C704 C705 C706
Part No. 1-135-201-11 1-135-201-11 1-162-967-11 1-162-968-11 1-107-826-91 1-115-156-11 1-115-156-11 1-125-837-91 1-115-156-11 1-115-156-11 1-115-156-11 1-117-863-11 1-165-176-11 1-165-176-11 1-119-663-11 1-164-227-11 1-127-671-91 1-162-964-11 1-135-149-21 1-164-505-11 1-135-259-11 1-115-156-11 1-164-505-11 1-115-156-11 1-164-360-11

Ref. No. R615 R616 R617 R618 R619 R620 R702 R703 R704 R705 R706 R707 R708 R709 R710 R712 R713 R714 R715 R716 R717 R718 R719 R720 R721 R722 R723 R724 R725 R726 R727 R728 R729 Part No. 1-216-831-11 1-216-845-11 1-216-851-11 1-216-857-11 1-216-857-11 1-216-845-11 1-216-855-11 1-216-821-11 1-216-853-11 1-216-853-11 1-216-855-11 1-216-821-11 1-216-845-11 1-216-849-11 1-216-849-11 1-216-853-11 1-216-853-11 1-216-841-11 1-216-849-11 1-216-853-11 1-218-879-11 1-216-845-11 1-216-849-11 1-216-833-91 1-216-845-11 1-216-849-11 1-216-853-11 1-216-841-11 1-218-839-11 1-218-851-11 Description METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP 6.8K 100K 330K 1M 1M 100K 680K 1K 470K 470K 680K 1K 100K 220K 220K 470K 470K 47K 220K 470K 22K 100K 220K 10K 100K 220K 470K 47K 470 1.5K 1K 220K 470K 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 0.50% 5% 5% 5% 5% 5% 5% 5% 0.50% 0.50% 5% 5% 5% Remarks 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W Ref. No. Part No. Description
MISCELLANEOUS ************* S704 1-762-553-11 SWITCH, LEAF (TAPE IN/ATS) M601 1-763-165-21 MOTOR (CAPSTAN/REEL MOTOR) (WITH PULLY) HP701 1-500-623-11 HEAD, MAGNETIC (PLAYBACK) PM701 1-454-674-32 SOLENOID, PLUNGER ************************************************************ ACCESSORIES & PACKING MATERIALS ******************************* REMOTE CONTROL UNIT(RM-WME22S) BATTERY CHARGER (BC-7S) (UK) BATTERY, NI-CD (NC-6WM) (AEP,UK,FR) BATTERY, NI-CD (NC-6WM) (US,CND) BATTERY CHARGER (BC-7SG) (AUS) BATTERY, NI-CD (NC-6WM) (AUS) BATTERY CHARGER (BC-7HT) (E,JE) BATTERY CHARGER (BC-9HR) (KR) BATTERY CHARGER (BC-7DC) (US,CND) BATTERY CHARGER (BC-7DY) (AEP,FR)
1-418-544-11 1-528-252-21 1-528-299-41 1-528-299-51 1-528-434-13 1-528-543-22 1-528-580-21 1-528-676-22 1-528-713-21 1-528-744-23

! ! ! !

1-528-842-11 BATTERY, NICKEL HYDROGEN (NH-14WM) (E,KR,JE) 1-569-007-11 ADAPTOR, CONVERSION 2P (E,JE) 1-759-213-11 CASE, BATTERY (US,CND,E,KR,AUS,JE) 1-759-700-21 CASE, BATTERY (DC IN 1.5V) (AEP,UK,FR) 3-008-521-01 CASE, BATTERY RECHARGEABLE 3-029-488-01 POUCH, CARRYING 3-867-217-01 MANUAL, INSTRUCTION (JAPNESE/ENGLISH/KOREAN) (JE) 3-867-217-11 MANUAL, INSTRUCTION (ENGLISH/FRENCH) (US,CND,AEP,UK,FR,AUS,CND,CND) 3-867-217-21 MANUAL, INSTRUCTION (GERMAN/DUTCH) (AEP) 3-867-217-31 MANUAL, INSTRUCTION (SWEDISH/ITALIAN) (AEP) 3-867-217-41 MANUAL, INSTRUCTION (SPANISH/PORTUGUESE)(AEP,E) 3-867-217-51 MANUAL, INSTRUCTION (FINNISH) (AEP) 3-867-217-61 MANUAL, INSTRUCTION (ENGLISH/CHINESE/KOREAN) (E,KR) 8-953-739-90 HEADPHONE MDR-E832SP

The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi.
1-216-821-11 METAL CHIP 1-216-849-11 METAL CHIP 1-216-853-11 METAL CHIP
< COMPOSITION CIRCUIT BLOCK > RB301 1-234-214-21 RES, NETWORK 1.5K < VARIABLE RESISTOR > RV601 1-223-325-21 RES, ADJ, METAL GLAZE 100K < SWITCH > S301 S701 S702 1-692-605-11 SWITCH, SLIDE (VOLUME) 1-762-516-11 SWITCH, PUSH (1 KEY)(A/B) 1-771-475-21 SWITCH, SLIDE (F/R) < VIBRATOR > X701 1-767-289-11 VIBRATOR, CERAMIC (4MHz) ************************************************************ * 1-674-823-11 SUB BOARD ********* < SWITCH > S703 1-771-053-21 SWITCH, KEY BOARD (OPERATION) ************************************************************ (3216)

Sony Corporation

9-927-157-11

Personal Audio Company

99H1689-1 Printed in Japan 1999.8 Published by General Engineering Dept.

3-867-217-62(1)

Korean and other countries model u 1111 CHARGE lamp CHARGE x 1

English

BGetting Started Choosing a Power Source
Dry Battery (see Fig. A-A)
Attach the supplied battery case, and then insert one R6 (size AA) battery with correct polarity. Be sure to insert it from the E side as illustrated. Note

Cassette Player

Operating Instructions 1
The battery remainder mark may temporarily show a lower level during fast forwarding or rewinding or use in extremely low temperatures.
Battery life (Approx. hours)
Tape playback Rechargeable NC-6WM fully charged Rechargeable NH-14WM fully charged Sony alkaline LR6 (SG) Rechargeable NC-6WM Sony alkaline LR6 (SG) used together Rechargeable NH-14WM Sony alkaline LR6 (SG) used together
Make sure the HOLD function of the remote control is turned off. If it is on, slide the HOLD switch on the remote control to turn it off (see Fig. C -B). Press Y(play)x(stop) and adjust the volume with VOL on the remote control (see Fig. C B).
Operation on the main unit (see Fig. C-C)
You can operate the tape with the operation button on the main unit. If the operation button is locked, slide HOLD/OPERATION switch in the direction of B to release hold.
To Press the operation button (beeps in the earphones) Once For more than a second during playback (Switching to side A: one short beep/ Switching to side B: two short beeps) Once (One short beep) Twice during playback (One short beep, then repeated sets of a short beep and a long beep) Three times during playback (One short beep, then repeated sets of two short beeps and a long beep) Four times during playback (Repeated sets of a short beep, a long beep and a short beep when rewinding) Twice during stop (One short beep, then repeated single beeps) Three times during stop (One short beep, then repeated sets of two short beeps)
vpvvqsc R6AA npD o v pps E sD

ppp NC-6WM ppp NH-14WM

op |v HOLD | w BD 1 C -
yhqg c rcD opc r v B HOLD/ OPERATION | qvD
m c r sc c 1 q A pcmt ccmt p|k c cmtvv AMS* c m t vcm p|k d cmtvv AMS* m t vcm d { c m t w c m vcmt p|ks cg cmtvv m p|ky c B

1 91@

1 1NC-6WM 1 1NH-14WM 1 11LR6(SG) 1NC-6WM 11LR6(SG) 1 1NH-14WM 11LR6(SG) 1

9EIAJ*@

19 A-A @
1 HOLD E 1C11HOLD 91C-B1 @E Y9 @ x 9 @ 1 VOL1 191C-B1 @E

(EIAJ*)

Yx VOL rpD CBD
Sony yp LR6SG ypp NC-6WM v Sony yp LR6SG ypp NH-14WM v Sony yp LR6SG

1 R6 9AA @1 1E 1 E 1E

1 E 1C1HOLD/OPERATION 1 B 1 9hold@11E
1 9 1E@ 111 9A11WF B11W1 11@ 9 11@

Notes on volume control

The VOLUME switch on the main unit has three steps; AVLS MIN, NORM, and MAX. Generally, set it to NORM and make fine volume adjustments on the remote control. Set it to MAX when the recording level is low. Set it to AVLS MIN to activate AVLS (see Protecting Your HearingAVLS). The sound cannot be turned down all the way.
Play back Play the other side

WM-EX20

Sony Corporation 1999 Printed in Malaysia

npvy Sony yypD

For maximum performance we recommend that you use a Sony alkaline battery.
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111Sony1 1 11E

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WALKMAN is a registered trademark of Sony Corporation. WALKMAN x Sony pD WALKMAN 1Sony 1 E
Rechargeable Battery (see

Fig. A-B)

1 Insert the supplied rechargeable battery (NC-6WM for U.S.A., Canada, European, Australian, and Hong Kong model/NH-14WM for other countries model) into the charger with correct polarity. Plug in the charger to the house current (mains). UK, Australian, and Hong Kong model: Full charging takes about 3.5 hours. U.S.A., Canada, and European Continent model: Full charging takes about 2.5 hours. Korean and other countries model: Full charging takes about 2 hours. If the plug does not fit your mains, attach the supplied AC plug adaptor (Excluding Korean model). Insert the fully charged battery into the rechargeable battery compartment (see Fig. A-C).
Stop playback Play the next track from the beginning (AMS*)
* Measured value by the standard of EIAJ (Electronic Industries Association of Japan). (Using a Sony HF series cassette tape)
* EIAJElectronic Industries Association of Japan vD Sony HF sf
Note on the cassette holder
When opening the cassette holder, make sure the tape is stopped, then slide the OPEN switch. If the cassette holder is opened when the tape is running, the tape may loosen and be damaged.

DC IN 1.5 V

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1 1 9C C1 CNC-6WMFNH-14WM@1 1 1E 9@1E C1111W1 113.51E CCW 1 2.51E 1111W1 1121E AC 1 911@E 1 1 9 A-C @ 1
* EIAJ9Electronic Industries Association of JapanW @1 11E191HF 11 @

1 1E

VOLUME 31 1W AVLS MINC NORM11MAXE C1NORM111E 111 1MAX E1 AVLS 1 AVLS MIN 1 9"1 AVLS" 1 @E 11 1E
The battery life may shorten depending on the operation of the unit.

WARNING

To prevent fire or shock hazard, do not expose the unit to rain or moisture.
to REMOTEi REMOTEi REMOTEi 1
Play the current track from the beginning (AMS*)
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House Current

(see Fig. A-D) (Excluding European models)
Remove the rechargeable battery if inserted. Attach the battery case and connect the AC power adaptor AC-E15HG (not supplied) to the DC IN 1.5 V jack of the battery case and to the wall outlet. Do not use any other AC power adaptor. Specifications for AC-E15HG vary for each area. Check your local voltage and the polarity of the plug before purchasing.

i n pv ex D 1C1E

Operation on the remote control
To Play the other side press (display) Yx for more than a second during playback (A or b appears according to the playing side) Yx once during playback FF during stop (FF appears) REW during stop (REW appears) Yx twice during playback To stop a single repeat, press Yx once FF once/for the number of tracks to be skipped during playback (AMS and the number of tracks to be skipped appear) REW once/for the number of tracks to be skipped during playback (AMS and the number of tracks to be skipped appear) FF for more than a second during stop (FF flashes)

p1ADv }

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m|v zv vvd OPEN | D w|vgw y D { h { k
Repeat the current track (Repeat Single Track function)

m sc 1 Yx Yx

Stop playback Fast forward* Rewind* Repeat the current track (Repeat Single Track Function) Play the next track/ succeeding 9 tracks from the beginning (AMS**) Play the current track/ previous 8 tracks from the beginning (AMS**) Play the other side from the beginning (Skip Reverse function) Play the same side from the beginning (Rewind Auto Play function)
Play the other side from the beginning (Skip Reverse function) Play the same side from the beginning (Rewind Auto Play function)

1 C1 1 E1 1 1AC 1 1ACE15HG91 @1 1 DC IN 1.5 V 1 1E 1 1AC 1 1E AC-E15HG1 1E 1 E 1

1 C OPEN 1E C1E

9AMS*@ 11C1 @ 1 9111 9AMS*@ 11C1 @ 1@ 11 91C@
1 19@ 1Yx 1 A1b @ 1 Yx1FF111 9FF1@ 1REW11 19REW @ 1Yx1 9
9 C111 1@ @ 91 1@ C111 1@

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3 wppspp 1A -CD h pp 300 D

European models v 1

1FF FFz 1REW REWz

Polarity of the plug

* Automatic Music Sensor
You can charge the battery about 300 times.
When you are not sure of the playback status, press the operation button once. The Walkman will return to normal playback (except when you have pressed the operation button during normal playback).
When to replace/charge the battery
Connecting the Earphones (see Fig. B)
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Other models u 1

FF REW

VOLUME

The battery remainder mark has 5 steps to show the remaining battery power. When the battery is exhausted, tape playback will become unstable and noisy, and then the tape will stop. Replace or charge the battery when e flashes in the display.
Display Condition There is enough battery power.
Connect the stereo mini plug firmly to the remote control. Connect the remote control firmly to REMOTEi. Wear the L marked side to the left ear and the R marked side to the right ear. If the earphones do not fit to your ears or the sound is unbalanced, adjust the earphones to fit to your ears firmly.

m v c 1Yx

p|k c FFm c 9 u AMSvu AMS** z p|k c REW dd 8 mu AMSvu AMS** z p|ks 1 FF q cg FFzz p|ky 1 REW c q REWzz * ophuz i Y x1 vWalkman
ujvdv cc r DWalkman D w pdpv ic r}
11111 151E C1 C1 E 1 m 1 1 E

1 E 1 @

* Automatic Music Sensor 91 @

11 C1Yx11

1E 1REMOTEi1 E L 11111C R 1111 E C 1 E
1F FF11F 9AMS11 1@ 9AMS**@ 1F REW11F 9AMS11 1@ 9AMS**@ 1ii11 9FF1@ 91 @

1 C E 1 11 1@E

Note on side A/B detection
This Walkman detects the side being played using the cavity on side A of the cassette. If there is no cavity on the cassette or the cavity is on side B, the detection will not be done correctly.

wr REMOTEi D w L xcvR xcjD

1 AE11 B11 C 1 E

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Walkman A oD opuoo B vwujh D E
AMS(Repeat Single Track)11
AMS1111(Repeat Single Track) 11 E1 C 1 E C1E

VOL Yx HOLD

Note on AMS and Repeat Single Track
REW for more than a second during stop (REW flashes) The AMS and Repeat Single Track functions detect a blank of 4 seconds or longer between the tracks. If there is noise between the tracks, these functions may not recognize the blank and may not operate. Likewise, if there is a lowlevel segment within a track, these functions may recognize it as a blank space. ppp D

yl v mvg y D

1dv1v
A M S v 4 q D opvhuj x u j c D w y v o p p f v h xcpD
E1 1E 1 C 1 11 1E1 11E 1E
The battery power is decreasing.
BOperating the Walkman Playing a Tape
UK, Australian, and Hong Kong model wgvv C1111
U.S.A., Canada, and European Continent model wivv C1C111

Operation button c r

* If Yx on the remote control is pressed during fast forward or rewind, the Walkman switches to playback. **Automatic Music Sensor

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y kjlm1c
OPEN 1 b 1 1 CE1 91 C - A @E
1REW111 19REW1 @ 91 1@ * 111 1Yx1C 11 E **Automatic Music Sensor 91 @
The battery is exhausted. Replace it with a new battery.

OPEN OPERATION

HOLD/OPERATION switch HOLD/OPERATION | HOLD/OPERATION
When you insert a charged battery, the battery remainder mark may even if it is not fully show charged. But the actual battery life is shorter.
Slide the OPEN switch in the direction of b to release the cassette compartment cover. Then, open it manually. Insert the cassette with the exposed end first (see Fig. C -A).
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(turn over)

w OPEN | b lqy|D vw |D svsc 1C-AD

Using Other Functions

Adjusting playback mode

(see Fig. D-A)

You can adjust the playback direction mode (s or d) as well as the BL SKIP mode (on or off). 1 Press MODE repeatedly. With each press the indications change as follows:

Emphasizing Sound (see

Fig. D-A)
1 Press SOUND repeatedly. With each press, the indications change as follows: SURROUND (Mega Surround*): Dynamic Surround Sound MB (Mega Bass): emphasizes bass sound (moderate effect) RV (Sound Revitalizer): emphasizes treble sound none: normal (no effect)

B Additional Information Precautions
On rechargeable battery and charger
Remove the charger unit from the wall outlet as soon as possible after the rechargeable battery has been charged. Overcharging may damage the rechargeable battery. The battery charger and the rechargeable battery may become warm during charging, but this is not a problem. Do not tear off the film on the rechargeable battery. Use only the supplied battery charger to charge the supplied rechargeable battery. Be sure not to short-circuit the battery. When you carry it with you, use the supplied carrying case. If you are not using the case, do not carry the battery with other metallic objects such as keys rings in your pocket. If the rechargeable battery is new or has not been used for a long time, it may not be charged completely until you use it several times. The nameplate indicating the operating voltage, power consumption, etc. is located on the bottom exterior of the battery charger.

On the remote control

Use the supplied remote control only with this unit.
Tape operation is not possible. Insert a cassette tape. The volume cannot be turned up. If AVLS is on, turn it off by setting the VOLUME switch on the main unit to NORM or MAX. The tape fast forwards by itself during playback. BL SKIP is activated. Deactivate BL SKIP. The sound contains noise. Use the unit away from radio wave-emitting devices such as cellular phones. The display and the operations are not normal. Remove the power sources for 15 seconds or more, and then set them again.

On headphones/earphones

Road safety Do not use headphones/earphones while driving, cycling, or operating any motorized vehicle. It may create a traffic hazard and is illegal in some areas. It can also be potentially dangerous to play your headphones/earphones at high volume while walking, especially at pedestrian crossings. You should exercise extreme caution or discontinue use in potentially hazardous situations. Preventing hearing damage Do not use headphones/earphones at high volume. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce volume or discontinue use. Caring for others Keep the volume to a moderate level. This will allow you to hear outside sounds and to be considerate to the people around you.

1 D BL SKIP

c| s 1dD 1 B MODE vf c xdop s v s BL SKIP v d v d BL SKIP
* y SRS Labs. p SRS Headphone wv Sony p MEGA BASS wxcrmD SRS Headphone qxx SRS Labs. p c }if SRS Labs. ph SRS Headphone wD
op SURROUND mtvwg VOLUME | v NORM AVLS MIN q D l v u v g p hvy D vcwrpD

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9 D-A @

119 D-A @
1 SOUNDE 1 C1W SURROUND (Mega Surround (1 )*): 1 MB (1)W 1 91@ RV (1 )W 1: 191@
BL SKIP 9on 1 off@9s 1d@11 1E 1 MODE9 @1 E1 11W
1 1E 1 1 E1 11 1E 1 C1 1 1E 1 E 11 1E 1 C C1 C C1 1 C1 1E LCD 940C @90C1 @ E 1 11E C1 E
1 (Dolby NR off) W13018,000 Hz 19REMOTEi @ 118300

CHK-1W91 @ E

AVLS VOLUME
1 1.5V 11 R6 9AA @ 1(w/h/d) 178.7 x 108.6 x 18.7 mm 9 @ 1180 g g 1 1 (1) (1) 1 (1) 1 NC-6WMC11.2VC1600mAhC1Ni-Cd (1)19C1C1C1 11@ NH-14WMC11.2VC11400mAhC1NiMH (1)@ (1) 1 (1) AC 1 (1)1 9C C1C1C111 1@ 1 1 1E 1
s v s BL SKIP v d v d BL SKIP
When BL SKIP is displayed, the tape is fast-forwarded to the next track if there is a blank space of longer than 12 seconds. You will hear repeated sets of three short beeps when skipping a blank. When s is displayed, both sides of the tape is played repeatedly. When d is displayed, both sides of the tape is played once (if you start from side B, only side B will be played).
* Mega Surround is a new sound mode combining the SRS Headphone technology of SRS Labs, Inc., and the MEGA BASS technology of Sony Corporation. symbol SRS Headphone and the are trademarks of SRS Labs, Inc. in the United States and selected foreign countries. SRS Headphone technology is incorporated under license from SRS Labs, Inc.

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| v NORM MAX lvw AVLS D hF BL SKIPD BL SKIPD mF pnfutphl D vcF p qvvdD 15

Specifications

Tape section
Frequency response (Dolby NR off) Playback: 3018,000 Hz Output Headphones (REMOTEi jack) Load impedance 8300 ohms
BL SKIPvop 12 qvgwh cD D ucpvyw nmt sv D dvcopp B |kvg B D

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1 wg VOLUME | v AVLS MIN lD
pv h xD qw vg pp j ov veq y v { v e x vp x u D r vrovxw h D xk p D D vh{mrwpv opn zqv fpD uq D xd pvy }mvuyq
If the sound becomes distorted in the SURROUND mode, limit the volume on the main unit by setting the VOLUME switch on the main unit to NORM or AVLS MIN, or select a different sound mode. You cannot change the mode during fast-forward or rewind. The setting is stored as long as the battery is not replaced.
wg VOLUME | v NORM MAX lD
ugnkx1w1 p3018,000 Hz REMOTEi s 8300

Maintenance

To clean the tape head and path
Use the cleaning cassette CHK-1W (not supplied) for every 10 hours of use. Note

Use only the recommended cleaning cassette.

General

Power requirements 1.5 V One rechargeable battery or one R6 (size AA) battery Dimensions (w/h/d) Approx. 78.7 x 108.6 x 18.7 mm (318 x x 34 inches), incl. projecting parts and controls Mass Approx. 180 g (6.4 oz.) Approx. 240 g (8.5 oz.) (incl. rechargeable battery and cassette) Supplied accessories Battery case (1) Stereo earphones with remote control (1) Battery charger (1) Rechargeable battery NC-6WM, 1.2V, 600mAh, Ni-Cd (1) (U.S.A., Canada, European, Australian, and Hong Kong model) NH-14WM, 1.2V, 1400mAh, NiMH (1) (Other countries model) Rechargeable battery carrying case (1) Carrying pouch (1) AC plug adaptor (1) (Except for U.S.A., Canada, European, Australian, Korean, and Hong Kong model) Design and specifications subject to change without notice.

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1 BL SKIP C1 1 E 11111 1E 1 s1 C E 1 d1 C 1 9B1 C1 B @E
* Mega Surround91 @ SRS Labs, Inc.1 SRS 1 Sony 1 MEGA BASS 1 E SRS HeadphoneSRS Labs, Inc 11E SRS Headphone 1 C1 SRS Labs, Inc.1E

E1 C1 1E

11911 @11E 1 9 E @E
BL SKIPC1AMSC119Repeat@ 1 1E 1 1 1 Sony 1E 1 1E 1 1 1 Sony 1E 1E 1 Sony 1E HOLDE HOLD1E 111 1E 11E 1 1E AVLS 111 CVOLUME NORM 1 MAX 1 AVLS1E 1 E BL SKIP1 1E BL SKIP1E 111E 11 E 1E 1 1E
SURROUND 1 CVOLUME 1NORM1AVLS MIN 1E 1 1E 1 11C1 E
You cannot adjust the playback mode during fast-forward or rewind. The setting is stored as long as the battery is not replaced.
v HOLD | qv D g v HOLD/ O P E R A T I O N | vqzHOLD c r D

On batteries

HOLD indication HOLD /HOLD
Protecting Your Hearing AVLS (Automatic Volume Limiter System)

(see Fig. D-B)

1 Set the VOLUME switch on the main unit to AVLS MIN.

Note on BL SKIP

The BL SKIP function detects a blank of 12 seconds or longer. If there is noise between the tracks, these functions may not recognize the blank and may not operate. Likewise, if there is a low-level segment within a track, these functions may recognize it as a blank space.

HOLD OPEN OPERATION

To cancel the AVLS function
Set the VOLUME switch on the main unit to NORM or MAX.
Do not charge a dry battery. Do not carry the dry or rechargeable batteries with coins or other metallic objects. It can generate heat if the positive and negative terminals of the batteries are accidentally contacted by a metallic object. When you do not use the Walkman for a long time, remove the battery to avoid any damage caused by battery leakage and subsequent corrosion.

1eu1try

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111 11 1E 1 C1 E

1 AVLS 9 11@

9 D-B @

1 11VOLUME AVLS MIN1E

1E 1 1E

To clean the exterior
Use a soft cloth slightly moistened in water. Do not use alcohol, benzine or thinner. Notes

Clean the headphones/earphones and remote control plugs periodically. Clean the terminals periodically with a cotton swab or a soft cloth as illustrated (see Fig. E).

f 10 ov CHK-1Wh v D

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BL SKIP11

* m fs

SOUND ;zD m fvd SOUND ;D

BL SKIP E1 11 C1 E C1 C111 1E

AVLS 1

VOLUME NORM11MAX 1E

1 HOLD 19 D-C @

C1 HOLD 1 E 1 HOLD/OPERATION 1 1HOLD1 1E
Locking the controls HOLD function

(see Fig. D-C)

On the remote control, slide the HOLD switch in the direction of the arrow to lock the controls. On the main unit, slide the HOLD/ OPERATION switch so that HOLD becomes visible and the operation button is locked.

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On handling
Do not drop the unit or give a shock to the unit, or it may cause a malfunction. Do not leave the unit in a location near heat sources, or in a place subject to direct sunlight, excessive dust or sand, moisture, rain, mechanical shock, or in a car with its windows closed. The LCD display may become hard to see or slow down when using the unit at high temperatures (above 40C/104F) or at low temperatures (below 0C/32F). At room temperature, the display will return to its normal operating condition. If the unit has not been used for a long period of time, set it in the playback mode to warm it up for a few minutes before you start using again.

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Playing a tape recorded with the Dolby* B NR system
Hold down SOUND until ; appears in the display. To cancel Dolby B NR, hold down SOUND again until ; disappears.
* Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. DOLBYand the double-D symbol ; are trademarks of Dolby Laboratories Licensing Corporation.

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Troubleshooting

The BL SKIP, AMS, or the Repeat Single Track function does not operate properly. Charge the rechargeable battery or replace the battery with a new Sony alkaline battery. You hear error beeps and you cannot operate the unit. Charge the rechargeable battery or replace the battery with a new Sony alkaline battery. The unit does not operate at all. Charge the rechargeable battery or replace the battery with a new Sony alkaline battery. HOLD is activated. Deactivate HOLD.

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You cannot turn on/off the Dolby B NR function during fast-forward or rewind. The setting is stored as long as the battery is not replaced.

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On tapes longer than 90 minutes
We do not recommend the use of tapes longer than 90 minutes except for a long continuous playback. They are very thin and tend to be stretched easily.
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