Sony TC-RE340 Manual de usuario

SERVICE MANUAL

STEREO CASSETTE DECK

AEP Model

TC-KE240/RE340

UK Model

TC-KE240

E Model

Australian Model

TC-RE340

SPECIFICATIONS

TC-KE240/RE340

Photo: TC-RE340 (Black type)

Dolby noise reduction and HX Pro headroom ex-

tension manufactured under license from Dolby

Laboratories Licensing Corporation.

HX Pro originated by Bang & Olufsen.

“DOLBY”, the double-D symbol ;, and “HX PRO”

aretrademarksofDolbyLaboratoriesLicensingCor-

poration.

Model Name Using Similar Mechanism NEW

Tape Transport Mechanism Type KE240 TCM-230ASV1

RE340 TCM-230ASR4N

– Continued on next page –

System

Recording system

4-track 2-channel stereo

Fast-winding time (approx.)

100 sec. (with Sony C-60 cassette)

Bias

AC bias

Signal-to-noise ratio (at peak level and weighted with Dolby

NR off)

Type I tape, Sony Type I (NORMAL): 55 dB

Type II tape, Sony Type II (HIGH): 57 dB

Type IV tape, Sony Type IV (METAL): 58 dB

S/N ratio improvement (approximate values)

With Dolby B NR on: 5 dB at 1 kHz, 10 dB at 5 kHz

With Dolby C NR on: 15 dB at 500 Hz, 20 dB at 1 kHz

Harmonic distortion

0.4% (with Type I tape, Sony Type I (NORMAL):

160 nWb/m 315 Hz, 3rd H.D.)

1.8% (with Type IV tape, Sony Type IV (METAL):

250 nWb/m 315 Hz, 3rd H.D.)

Type I tape, Sony Type I

(NORMAL)

30 – 15,000 Hz (±3 dB, IEC),

20 – 16,000 Hz (±6 dB)

Type II tape, Sony Type II

(HIGH)

30 – 16,000 Hz (±3 dB, IEC),

20 – 17,000 Hz (±6 dB)

Type IV tape, Sony Type IV

(METAL)

30 – 18,000 Hz (±3 dB, IEC),

20 – 19,000 Hz (±6 dB),

30 – 13,000 Hz (±3 dB, –4 dB

recording)

Frequency response (Dolby NR off)

Tape type

Inputs

Line inputs (phono jacks)

Sensitivity: 0.16 V

Input impedance: 47 kilohms

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SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0OR DOTTED

LINE WITH MARK 0ON 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.

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.

Outputs

Line outputs (phono jacks)

Rated output level: 0.5 V at a load impedance of

47 kilohms

Load impedance: Over 10 kilohms

Headphones (stereo phone jack)

Output level: 0.25 mW at a load impedance of

32 ohms

General

Power requirements

Europe and certain countries in Asia: 220 – 230 V AC, 50/

60 Hz

Australia: 240 V AC, 50/60 Hz

Other countries: 110 – 120/220 – 240 V AC, 50/60 Hz

Power consumption

TC-RE340: 15 W

TC-KE240: 14 W

Dimensions (approx.) (w/h/d)

430 ×120 ×290 mm

Mass (approx.)

3.3 kg

Supplied accessories

Audio connecting cords (2)

Design and specifications are subject to change without notice.

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SECTION 1

SERVICING NOTE

TABLE OF CONTENTS

1. SERVICING NOTE .................................................. 3

2. GENERAL ................................................................... 4

3. DISASSEMBLY ......................................................... 5

4. MECHANICAL ADJUSTMENTS....................... 10

5. SERVICE MODE...................................................... 11

6. ELECTRICAL ADJUSTMENTS......................... 12

7. DIAGRAMS

7-1. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 15

7-2. Printed Wiring Boards – HEAD RELAY (REC/PB)/

LEAF SW (REC/PB) Boards –....................................... 18

7-3. Printed Wiring Board – MAIN Board – ........................ 19

7-4. Schematic Diagram – MAIN Section (1/2) –................ 20

7-5. Schematic Diagram – MAIN Section (2/2) –................ 21

7-6. Printed Wiring Boards

– TRANS/POWER SW Boards – ................................... 22

7-7. Schematic Diagram

– TRANS/POWER SW Boards – ................................... 23

7-8. Printed Wiring Board – DISPLAY Board – .................. 24

7-9. Schematic Diagram – DISPLAY Board – ..................... 25

7-10. Printed Wiring Boards – KEY/HP Boards – ................. 26

7-11. Schematic Diagram – KEY Board – ............................. 26

7-12. IC Pin Function Description ........................................... 28

8. EXPLODED VIEWS................................................ 30

9. ELECTRICAL PARTS LIST ............................... 33

MODEL IDENTIFICATION

– BACK PANEL –

Part No.

Model Part No.

TC-KE240 AEP model 3-042-502-0s

UK model 3-042-502-1s

AEP model 3-042-490-0s

TC-RE340 Australian model 3-042-490-1s

Singapore model 3-042-490-2s

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SECTION 2

GENERAL

qa qd qf qg qk w;qj ql wa wdqh wsqs

234 8065 7 9

OFF

MPX

FILTER

DOLBY NR BALANCE

AUTO CAL

REC LEVEL

456

PHONES

L R

AUTO

REC MUTING RECPAUSE

RESET MEMORY

POWER

DIRECTION MODE

EJECT

SYNCHRO

FADER ARL

AMS

1Fluorescent indicator tube

2Cassette holder

3mbutton

4SYNCHRO button and indicator

5Hbutton (TC-KE240)

h, Hbuttons (TC-KE340)

6FADER button

7ARL button

8Mbutton

9AUTO REC LEVEL indicator

0RED LEVEL knob

qa POWER button

qs DIRECTION MODE button

qd RESET button

qf MEMORY button

qg EJECT button

qh xbutton

qj AUTO CAL button (TC-RE340)

qk Xbutton

ql DOLBY NR knob

w; Wbutton

wa BALANCE knob

ws zbutton

wd PHONES jack

• LOCATION OF CONTROLS

– Front Panel –

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wire (flat type)

(CN302)

wire (flat type)

(CN801)

claw

front panel

section

three screws

(BVTP3

screw

(BVTT3

screw

(BVTT3

)

harness

connector

(CN802)

connector

(CN702)

two connectors

(CN301, CN803)

CASE (410726)

FRONT PANEL SECTION

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

SECTION 3

DISASSEMBLY

two screws

(case 3 TP 2)

case (410726)

screw (BVTT3

two screws

(case 3 TP 2)

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MECHANISM DECK

(TCM-230ASV1: KE240)

(TCM-230ASR4N: RE340)

MAIN BOARD

four screws

(BVTP2.6

lid (cassette) ass’y

Push the button (eject).

mechanism deck

(TCM-230ASV1: KE240)

(TCM-230ASR4N: RE340)

screw (BVTP3

)

screw (BVTP3

connector

(CN701)

main board

bracket (TR)

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CASSETTE HOLDER (L) ASS’Y

CAPSTAN MOTOR ASS’Y, LEAF SW BOARD

screw (BVTT2

two screws

(BVTT2

fulcrum plate (R)

cassette holder (L) ass’y

fulcrum plate (L)

loading spring (L)

lever (LOCK L)

step screw

damper

screw (PS2.6

two solders

leaf SW board

belt (capstan)

two claws

claw

capstan motor ass’y (M1002)

screw

(PS2.6

two screws

(PS2.6

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PINCH LEVER ASS’Y

FLYWHEEL ASS’Y

claw

pinch lever (FWD) ass’

pinch lever

(REV) ass’y

claw

RE340

flywheel (FWD) ass’y

flywheel (REV)

ass’y

washer

stopper washer

belt (FR2)

RE340

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MECHANICAL BLOCK ASS’Y (AMS)

HEAD BASE ASS’Y (KE240), HEAD DECK ASS’Y (RE340),

HEAD RELAY BOARD

two screws

(BVTT2

3.5)

two screws

(BVTT2

3.5)

mechanical block ass’y

(AMS)

reverse

slider

torsion sprin

RE340

screw (BVTT2

head relay (REC/PB)

board

head base ass’y (KE240),

head deck ass’y (RE340)

tension spring (HEAD)

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SECTION 4

MECHANICAL ADJUSTMENTS

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

swab:

record/playback/erase head pinch roller

rubber belt capstan

idler

2. Demagnetize the playback head with a head demagnetizer.

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 power supply

voltage unless otherwise noted.

•Torque Measurement

Mode Torque Meter Meter Reading

2.74 – 6.86 mN•m

Forward CQ-102C (28 – 69 g•cm)

(0.42 – 0.90 oz•inch)

Forward 0.1 – 0.59 mN•m

CQ-102C (1.1 – 6.0 g•cm)

Back Tension (0.01 – 0.06 oz•inch)

2.74 – 6.86 mN•m

Reverse CQ-102RC (30 – 69 g•cm)

(0.42 – 0.90 oz•inch)

Reverse 0.1 – 0.59 mN•m

CQ-102RC (1.1 – 6.0 g•cm)

Back Tension (0.01 – 0.06 oz•inch)

6.86 – 15.68 mN•m

FF, REW CQ-201B (70 – 159 g•cm)

(0.83 – 2.78 oz•inch)

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