CFD-44 - Sony Audio Service Manual (repair manual). Page 2

– 2 –

Power requirements

120 V AC, 60Hz : US, Canadian model
220 - 230 V AC, 50Hz : AEP, Italian model
230 - 240 V AC, 50Hz : UK model
12 V DC, 8 size D (R20) batteries

Power consumption

AC 25 W

Battery Life

FM recording
Sony R20P : approx. 9 h
Sony alkaline LR20 : approx. 18 h
Tape playback
Sony R20P : approx. 5 h
Sony alkaline LR20 : approx. 9 h
CD playback
Sony R20P : approx. 3.5 h
Sony alkaline LR20 : approx. 7 h

Dimensions

Approx. 400 x 173 x 244 mm (w/h/d)
(15

3

/

4

 X 6

7

/

8

 X 9

5

/

8

 inches) (incl. projecting parts)

Mass

Approx. 4kg (8 lb. 13 oz) (incl. batteries)

Supplied accessory

AC power cord (1)

Design and specifications are subject to change without notice.

Specification ..................................................................................... 1

1. SERVICING NOTES .................................................... 3

Location and Function of Controls ............................................ 5

3-1. Cabinet (Front) Removal .................................................... 6
3-2. Cabinet (Upper) Removal ................................................... 6
3-3. CD Section Removal ........................................................... 7
3-4. Main BoardRemoval ........................................................... 7
3-5. Power Board and Transformer Board Removal .................. 8

4-1. Mechanical Adjustment ...................................................... 9
4-2. Electrical Adjustment .......................................................... 9

5. EXPLAMNATION OF IC TERMINALS ................... 15

6-1. Block Diagram (Main Section) ......................................... 17
6-2. Block Diagram (CD Section) ............................................ 19
6-3. Circuit Boards Location .................................................... 21
6-4. Printed Wiring Boards ...................................................... 22
6-5. Schematic Diagram (Main (1/2) Section) ......................... 25
6-6. Schematic Diagram (Main (2/2) Section) ......................... 29
6-7. Printed Wiring Boards (CD Section) ................................ 32
6-8. Schematic Diagram (CD Section) ..................................... 33
6-9. IC Block Diagram ............................................................. 36

7-1. Cabinet (Front) Section ..................................................... 39
7-2. Cabinet (Rear) Section ...................................................... 40
7-3. Cabinet (Upper) Section ................................................... 42
7-4. Mechanism Deck Section -1 ............................................. 43
7-5. Mechanism Deck Section -2 ............................................. 44
7-6. CD Chassis Section ........................................................... 45
7-7. Optical Pick-up  Section ................................................... 46

8. ELECTRICAL PARTS LIST ................................................ 47

AC 120V

⁄

60Hz

: US, Canadian model

AC 220V–230V

⁄

50Hz : AEP, Italian model

AC 230V

⁄

50Hz

: UK model

MODEL NO.

– Model Number Label –

CAUTION
Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation expo-
sure.

Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.

This Compact Disc player is
classified as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT label is located on
the rear exterior.