Sony TCM-36/459V Manuale utente

SERVICE MANUAL

CASSETTE-CORDER

US Model

Canadian Model

AEP Model

E Model

Chinese Model

TCM-459V

Tourist Model

TCM-36/459V

Model Name Using Similar Mechanism NEW

Tape Transport Mechanism Type MT-459V-118

SPECIFICATIONS

TCM-36/459V

Photo: TCM-459V

Ver 1.22004.03

9-923-317-12 Sony Corporation

2004C05-1 Personal Audio Company

– 2 –

SECTION 1

GENERAL

TABLE OF CONTENTS

1. GENERAL ................................................................... 2

2. DISASSEMBLY ......................................................... 3

3. MECHANICAL ADJUSTMENTS....................... 5

4. ELECTRICAL ADJUSTMENTS......................... 6

5. DIAGRAMS

5-1. Block Diagram ................................................................ 7

5-2. Printed Wiring Boards..................................................... 9

5-3. Schematic Diagram ......................................................... 13

6. EXPLODED VIEWS................................................ 16

7. ELECTRICAL PARTS LIST ............................... 19

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur-

ing 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 dam-

aged by heat.

TAPE COUNTER

EAR

MIC

VOL

Flat mic

VOR (TCM-459V)

MIC SENS (TCM-459V)

BATT/REC

rREC

pSTOP

(PLAY

0REW/REVIEW

)FF/CUE

PAUSE c

SPEED CONTROL

DC IN 3V

• Parts Identification

– 3 –

SECTION 2

DISASSEMBLY

CABINET (REAR), CASSETTE LID

Note: Follow the disassembly procedure in the numerical order given.

• This set can be disassembled in the order shown below.

SET CABINET (REAR) MAIN BOARD BELT

CASSETTE LID MECHANISM DECK

(MT-459V-118)

cassette lid

strap

two claws

screw

cabinet (rear)

three screws

(B1.7

10)

boss

cassette spring

claw

flexible board

(CN102)

– 4 –

MAIN BOARD, MECHANISM DECK (MT-459V-118)

REC lever

screw

(1.7)

S101

screw

(M1.4)

NOTE FOR INSTALLATION

• MAIN BOARD

On installation MAIN board

adjust the S101 and REC lever.

claw

screw

(1.7)

screw

(M1.4)

MAIN board

mechanism deck

(MT-459V-118)

three screws

(IB lock)

knob (pause)

Remove the two solders

of the head lead (HRP901).

Remove two solders

of motor leads (M901).

S105

Note: On installation MAIN

board adjust the S105

and knob (pause).

– 5 – – 6 –

Precaution

• Supplied voltage: 2.5 V

• Switch and control position

VOR switch (S401): OFF (459V)

PAUSE switch (S105): OFF

VOL (RV101): mechanical mid

SPEED CONTROL (RV602): mechanical center

MIC SENS switch (S201): H (459V)

TestTape

Record/Playback Head Azimuth Adjustment

Procedure:

Mode: playback

1. Turn the adjustment screw to obtain the maximum reading on

level meter.

Note: Several peaks may appear, but take the maximum.

2. After the adjustment, lock the adjustment screw with suitable

locking compound.

Adjustment Location:

BELT

capstan belt

FR belt

counter belt

SECTION 3

MECHANICAL ADJUSTMENTS

TapeTension Measurement

1. Clean the following parts with a denatured-alcohol-moistened

swab:

record/playback head pinch roller

erase head rubber belt

capstan idler

2. Demagnetize the record/playback head with a head demagne-

tizer. (Do not bring the head demagnetizer close to the erase

head.)

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the

parts adjusted.

5. The adjustments should be performed with the rated power

supply voltage (2.5 V) unless otherwise noted.

Torque Measurement

Mode Torque Meter Meter Reading

FWD 22 – 48 g•cm

CQ-102C (0.31 – 0.67 oz•inch)

Forward Back 1.0 – 4.5 g•cm

Tension (0.014 – 0.063 oz•inch)

FF, REW CQ-201B more than 50 g•cm

(more than 0.69 oz•inch)

Mode Tension Meter Meter Reading

FWD CQ-403C more than 50 g

(more than 1.76 oz)

SECTION 4

ELECTRICAL ADJUSTMENTS

0 dB=0.775 V

Tape Speed Adjustment

Procedure:

Mode: playback

1. Play back WS-48A (tape end part) and adjust RV601 so that

the frequency counter reading becomes 3,000 ± 15 Hz.

2. Play back WS-48A tape the beginning and the end part, check

that the frequency counter reading is within same standard of

step1.

Adjustment Location:

[MAIN BOARD] (Side B)

Type Signal Used for

P-4-A063 6.3 kHz, –10 dB head azimuth adjustment

WS-48A 3 kHz, 0 dB tape speed adjustment

level meter

test tape

P-4-A063

(6.3 kHz, –10 dB) 10 k

Ω

set

EAR jack

–

frequency

counter

Standard tape for adjusting

WS-48A

(3 kHz, 0 dB) 10 k

Ω

EAR jack

set

–

adjustment screw

IC101

S102

RV601

RV602

IC501

Ver 1.2

– 15 – – 16 –

• IC Block Diagrams

IC101 LA4168ML-TE-L

IC501 MM1251BFBE

SECTION 6

EXPLODED VIEWS

• 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 num-

ber in the exploded views are not supplied.

• Accessories and packing materials are given

in the last of the electrical parts list.

NOTE:

• -XX and -X mean standardized parts, so they

may have some difference from the original

one.

• Color Indication of Appearance Parts

Example:

KNOB, BALANCE (WHITE) . . . (RED)

↑↑

Parts Color Cabinet's Color

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

(1) CABINET SECTION

23 23

21 20

17 16

114

SP901

(including MIC101)

812

1 3-318-382-31 SCREW (1.7), TAPPING

2 3-345-648-51 SCREW (M1.4), TOOTHED LOCK

*3 A-3021-022-A MAIN BOARD, COMPLETE (TCM-459V)

*3 A-3021-024-A MAIN BOARD, COMPLETE (TCM-36)

4 3-008-612-01 TERMINAL, PLUS

5 3-924-750-01 TERMINAL, MINUS

6 3-924-744-01 SPRING (CLAW DETECTION), TENSION

7 3-018-311-01 CLAW, ERASING PREVENTION

8 3-018-310-01 KNOB (PAUSE)

9 4-969-980-21 SCREW (IB LOCK)

10 3-578-101-41 PLATE, ORNAMENTAL

11 3-018-307-01 CABINET (FRONT) (TCM-459V)

11 3-018-307-31 CABINET (FRONT) (TCM-36)

*12 1-669-038-11 LED BOARD

13 3-936-424-01 SPRING, CASSETTE

14 4-017-441-01 CUSHION (B)

*15 3-924-757-01 BRACKET (SPEAKER)

16 3-924-761-01 STRAP

17 3-018-309-01 LID, BATTERY CASE

18 3-018-308-11 CABINET (REAR) (TCM-459V)

18 3-018-308-31 CABINET (REAR) (TCM-36)

19 3-018-312-01 FOOT (A)

20 3-334-565-11 SCREW (B1.7X10), TAPPING

21 3-023-856-01 FOOT (B)

22 3-907-531-01 SCREW

23 3-831-441-XX SPACER, KNOB

24 X-3375-895-1 LID SUB ASSY, CASSETTE (TCM-459V)

(including MIC101)

24 X-3375-897-1 LID SUB ASSY, CASSETTE (TCM-36)

(including MIC701)

SP901 1-505-838-11 SPEAKER (3.6CM)

– 17 –

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

(2) MECHANISM DECK SECTION-1

(MT-459V-118)

51 X-3370-386-1 PINCH ROLLER ASSY

52 3-925-146-01 BUTTON (FF) ())

53 3-925-147-01 BUTTON (REW) (0)

54 3-925-148-01 BUTTON (PLAY) (()

55 3-925-145-11 BUTTON (REC) (r)

56 3-936-409-01 BUTTON (STOP) (p)

57 1-548-582-11 COUNTER, TAPE (SMALL TYPE)

58 3-924-625-01 LEVER (HEAD)

59 3-924-645-01 BRACKET (HEAD)

60 3-924-685-01 SPRING (AZIMUTH), COMPRESSION

61 3-704-197-91 SCREW (IB LOCK)

62 3-375-135-01 SCREW (1.4), SPECIAL

63 3-376-177-01 SCREW (M1.4X3.8)

64 3-925-107-01 SPRING (IDLER), COMPRESSION

65 3-924-637-01 GEAR (FF)

66 3-924-673-01 GEAR (S REEL)

67 3-924-674-01 SPRING (B. T), COMPRESSION

68 3-924-641-01 GEAR (T REEL)

69 3-924-726-01 SPRING (M GROUND), TORSION

70 3-924-681-01 BELT (CAPSTAN)

71 3-925-109-01 CUSHION (MOTOR)

72 3-925-108-01 SCREW (MOTOR)

73 3-924-644-01 SPRING (POWER TENSION), TENSION

74 3-348-160-11 SCREW (M1.4X1.6), PRECISION PAN

75 3-018-522-01 COUNTER, BRACKET

76 3-924-675-01 PULLEY (COUNTER)

77 3-924-683-01 BELT (COUNTER)

78 3-376-407-01 SCREW (M1.4)

HRP901 1-500-073-11 HEAD, MAGNETIC (RECORD/PLAYBACK)

M901 1-698-588-11 MOTOR, DC (CAPSTAN/REEL)

64 65

M901

HRP901

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