Sony tc 42 service manual

Page 1

Power Requirements:

. Track System:
Ta pa:
Tape Speed:

Recording Time:
(with (2-120 (ape cassette)

Frequency Response:
\ Wow and Flutter:
Power Output:

Award Bias Fraquencv:

E Model
USA Model
Canada Model
AEP Model

CASSETTE-CDRDER

SPECIFICATiONS

DC 6 V with four penlighr batteries,
house hoid current with an ac adapter
[AC-9 (USA and Canada).

AC-4SGC (E and AEPH , rechargeabie
barterv pack (BF-23) or 12 V do with
SONY car battery curd (DOC-126)
Two'track mono
SONY rape cassette or equivalent

17/3 in: (4.8 cm/s)

2.0 hrs total

50 ~ 10,000 Hz
0.38 % (RMS) weighted
500 mW maximum

Approx. 41 kH:

Input: MIC input

impedance : low impeuance
Maximum sensitivity : 0.2 mV (-72 dB!

011mm: MONITOR output
Impedance : 80 or 10 k9 load
Outputlevel : 0_775V (0 dB]
with 10 k9 load
Speaker: 2 3% (70 mm)

Dynamic speaker
Voice coil impedance: 8 Q

Semiconductors: 1 FET, 13 xransistors and 8 diodes

Dimensions: 2(W) x 75mm) x 45/340)
(51 x 184 x 111 mm)
Weight: 2 lb 3 01 (0.98 kg) with four

penl ight batteries

,1 j"
SERVICE MANUAL}

Page 2

Section

TABLE OF CONTENTS

Title Page

Specifications ............................. 1
OUTLINE
1-1V Servo Control Circuit Operation .................... 3
1-24 Auto Shut-off Mechanism Operation .................. 4
1-3. Block Diagram ............................. 5
1-4. External View ............................. 6
1-5. Internal View .............................. 6
DISASSEMBLY
2-1. Case (A) and (B) Removal ....................... 8
2-1 Case (C) Removal ...........................
2~3. Complete Circuit Board Removall
2-41 Motor Removal .......
26. Belt Removal ........

2-61 Midway Pulley Removal . , , .
2-7. Rewind Idler Slide Removal . 1
2-8. Fast Forward Plate Removal ,

2-9. Take-up Drum Removal ........................ 10
ADJUSTMENTS

3-1. Mechanical Adjustments ........................ 11
3-2, Electrical Adjustments/Measurements ................. 13
DIAGRAMS

4-1, Schematic Diagram ........................... 17
4A2. Mounting Diagrams ........................... 19
4-31Levchiagramslu.,....l.,l..l1..: ......... 21

EXPLODED VIEWS

5-1. Exploded View (1) ........................... 23
52. Exploded View (2) ........................... 25
5-3. Exploded View (3) ........................... 27
5-4, Packing ................................. 28
ELECTRICAL PARTS LIST ........................ 29