SONY TCTX5 - Service Manual Immediate Download

MICROFILM

TC-TX5

STEREO CASSETTE DECK

AEP Model

UK Model

E Model

Tourist Model

SERVICE MANUAL

Dolby noise reduction 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

TC-S1

Tape Transport Mechanism Type

TCM-9700HLD

SPECIFICATIONS

Recording system

4-track 2-channel stereo

Frequency response

(DOLBY NR OFF)

30 14,000 Hz (±3 dB), using

Sony TYPE I cassette

30 15,000 Hz (±3 dB), using

Sony TYPE II cassette

Wow and flutter

±0.15% W. Peak (IEC)

0.1% W. RMS (NAB)

±0.2% W. Peak (DIN)

Input

TAPE IN (phono jacks):

impedance 47 kilohms

Output

TAPE OUT (phono jacks):

voltage 550 mV

impedance 47 kilohms

General

Power requirements

AEP, UK, Germany:

220 230V AC, 50/60 Hz

Other countries:

110 120V or 220 240 V AC,

50/60Hz Adjustable with the

voltage selector

Power consumption

10 W

Dimensions

Approx. 280

× 85 × 360 mm

(111/8

× 33/8 × 141/4 in) (w/h/d)

incl. projecting parts and controls

Mass

Approx. 3.7 kg (8 lb 3 oz)

Supplied accessories: Audio connecting cord (2)

AU BUS connecting cord (1)

Design and specifications are subject to change without

notice.

SECTION 2

DISASSEMBLY

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

CASE

FRONT PANEL SECTION

LOADING PANEL

MECHANISM DECK

2 Remove the loading panel

to direction of the arrow B.

1 Rotate the gear

to direction of

the arrow A.

1 two screws

(BVTT2.6

× 8)

3 two screws

(BV3

× 8)

2 bracket

7 mechanism deck

5 connector

(CN804)

4 four

screws

(BV3

× 8)

6 two

claws

5 two

connectors

(CN351, 803)

1 two screws

(CASE 3 TP2)

2 case

1 two screws

(CASE 3 TP2)

1 screw

(BV3

× 8)

2 flat wire

(CN802)

3 front panel section

1 screw

(BV3

× 8)

1 three screws

(BV3

× 8)

PRECAUTION

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

swab:

record/playback/earth head pinch roller

rubber belts

capstan

idlers

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 sup-

ply voltage unless otherwise noted.

Torque Measurement

SECTION 3

MECHANICAL ADJUSTMENTS

Mode

Torque Meter

Meter Reading

CQ-102C

30-65 g·cm

FWD

(0.42-0.90 oz·inch)

FWD

1.5-6 g·cm

Back tension

(0.021-0.083 oz·inch)

CQ-102RC

30-65 g·cm

REV

(0.42-0.90 oz·inch)

REV

1.5-6 g·cm

Back tension

(0.021-0.083 oz·inch)

70-130 g·cm

FF, REW

CQ-201B

(0.98-1.80 oz·inch)

SECTION 4

ELECTRICAL ADJUSTMENTS

Note: The adjustment should be performed in the order given in

the service manual. As a rule, adjustments about playback

should be performed before those about recording.

The adjustments should be performed before for both L-CH

and R-CH.

· Switches and controls should be set as follows unless otherwise

specified.

DOLBY NR switch

: OFF

DIRECTION switch :

0 dB=0.775 V

Test Tape

Type

Signal

Used for

P-4-A100

10 kHz, 10 dB

Azimuth Adjustment

P-4-L300

315 Hz, 0 dB

Playback Level Adjustment

WS-48B

3 kHz, 0 dB

Tape Speed Check

Test Mode

This set will get into test mode by shorting the pins of CN801 (2P)

on MAIN board before turning the power on.

Record/Playback Head Azimuth Adjustment

Procedure:

1. Mode : REV playback

2. Turn the adjustment screw for the maximum output levels. If

these levels do not match, turn the adjustment screw until both

of output levels match together within 1 dB.

Screw

position

L-CH

peak

within

1dB

output

level

L-CH peak

R-CH peak

within

1dB

angle

R-CH

peak

3. Phase Check

Mode : playback

Screen pattern

Good

Wrong

in phase 45

° 90° 135° 180°

LINE OUT

set

R-CH

L-CH

47 k

oscilloscope

test tape

P-4-A100

(10 kHz, 10 dB)

set

47 k

LINE OUT

level meter

Test tape

P-4-A100

(10 kHz, 10 dB)

4. Set in the FWD mode and repeat the step 1 to 3.

5. After the adjustment, lock the screw with locking compound.

Adjustment Location: Record/Playback head

FWD side

REV side

Adjustment screw

Tape Speed Adjustment

Procedure:

Mode: FWD playback

set

LINE OUT

frequency counter

test tape

WS-48B

(3 kHz, 0 dB)

47 k

1. Set to FWD playback mode.

2. Adjust RV801 so that the frequency counter reading becomes

2,980 ± 30 Hz.

3. Confirm that the deviation between tape top and tape end is within

3%.

Playback Level Adjustment

Procedure:

Mode: FWD playback

Adjust RV151 (L-CH) and RV251 (R-CH) so that the reading on

level meter meets the adjustment limits below.

Adjustment Limits:

LINE OUT level: 4.7±0.5 dB (0.43 to 0.48 V)

Level difference between channels: within 2 dB

Check that the LINE OUT level does not change even if Playback

and Stop operation is repeated several times.

Adjustment Location: DECK board

Adjustment Location:

[DECK BOARD] (Component side)

set

LINE OUT

47 k

test tape

P-4-L300

(315 Hz, 0 dB)

level meter

IC305

CN352

T351

RV252

Record BIAS(R-CH)

RV152

Record BIAS(L-CH)

RV251

Playback Level(R-CH)

RV151

Playback Level(L-CH)