Sony cfd g 70 service manual

Page 1

CFD-G70

SERVICE MANUAL

Ver 1.0 2001.05

US Model
Canadian Model
E Model

Model Name Using CD Section CFD-S40CP

Similar Mechanism Tape Section CFD-S40CP

CD Mechanism Type KSM-21SCDP
Optical Pick-up Type KSS-213C
Tape Transport Mechanism Type MF-V5-1 17

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS (US Model)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION
Main speaker with 3.2-ohm loads, both channels driven from
1,000 - 10,000 Hz; rated 3 W per channel-minimum RMS power,
with no more than 10 % total harmonic distortion in AC operation.
Subwoofer with 4-ohm loads, driven at 50 - 150 Hz; rated 6 W
minimum RMS power, with no more than 10 % total harmonic
distortion in AC operation.

GAME Xpand with lZ-ohm loads, driven at 3,000 - 10,000 Hz;
rated 1 W per channel minimum RMS power, with no more than
10 % total harmonic distortion in AC operation.

Other Specifications
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAIAs
Wave length: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 11W
(This output is the value measured at a distance of about
200 mm from the objective lens surface on the optical
pick-up block with 7 mm aperture.)
Spindle speed
200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels
2
Frequency response
20 - 20,000 Hz +l/-2 dB
Wow and flutter
Below measurable limit

Radio section
Frequency range
FM: 87.6 - 108 MHz
AM: 530 - 1,710 kHz
Antennas
FM: Telescopic antenna
AM: Built-in ferrite bar antenna

Cassette-comer section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 sec. with Sony cassette C-6O
Frequency response
TYPE I (normal): 70 - 13,000 Hz

General
Speakers
Main speaker: 10 cm (4 in.) dia., 3.2 Q, cone type (2)
Subwoofer: 8 cm (3 1/4 in.) dia., 4 Q, cone type (1)
GAME Xpand: 5 cm (2 in.) dia, 12 Q, cone type (2)
Inputs
LINE IN jack (stereo minijack): sensitivity 436 mV
Outputs
Headphones jack (stereo minijack): for 16 - 68 Q
impedance headphones

- Continued on page 2 -

cn RADIO CASSETTE-CORDER
S O NY®

9-873-132-11 Sony Corporation
2001E0200-1 Personal Audio Company
© 2001.5 Shinagawa TEC Service Manual Production Group

Page 2

CFD-G70

Power output
Main speaker: 4 W + 4W (at 3.2 Q, 10 70 harmonic
distortion in DC operation)
Subwoofer: 12 W (at 4 Q, 10 % harmonic distortion in
DC operation)
GAME Xpand: 1.2 W + 1.2 W (at 12 S2, 10 % harmonic
distortion in DC operation)
Power requirements
For CD radio cassette-corder:
120 V AC, 60 Hz
12 V DC, 8 size D (R20) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries
Power consumption
AC 35 W
Battery life
For CD radio cassette-corder:
FM recording
Sony RZOP: approx. 8 h
Sony alkaline LR20: approx. 18 h
Tape playback
Sony RZOP: approx. 1.5 h
Sony alkaline LR20: approx. 6 h
CD playback
Sony RZOP: approx. 1 h
Sony alkaline LR20: approx. 4 h

Dimensions

Approx. 530 X 193 X 345 mm (w/h/d)

(20 7/8 X 7 5/8 X 13 5/8 inches) (incl. projecting parts)
Mass

Approx. 7 kg (15 lb. 5 oz) (incl. batteries)
Supplied accessories

AC power cord (1)

Remote control (1)

AV connecting cord (1)

Audio connecting cord (1)

Design and specifications are subject to change without
notice.

Flexible Circuit Board Repairing

- Keep the temperature of the soldering iron around 270°C during
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.

0 Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINEWITH
MARK A ON 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 PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!!

LES COMPOSANTS IDENTIFIES PAR UNE MARQUE A sun
LES DIAGRAMMES SCHEMATIQUES ET LA LISTE DES
PIECES SONT CRITIQUES POUR LA SECURITE DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIECES SONY DONT LES NUMEROS SONT
DONNES DANS CE MANUEL ou DANS LES SUPPLEMENTS
PUBLIES PAR SONY.

2

TABLE OF CONTENTS

Specifications ............................................................................... 1

1.

2.

SERVICING NOTES 3

GENERAL

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

DISASSEMBLY

3-1.
3-2.
3-3.
3-4.
3-5.
3-6.
3-7.
3-8.
3-9.
3-10.

3-11.

3-12,

Cabinet (Front) ASSY, Cabinet (Rear) ASSY
Control-1 Board, Control-2 Board
Headphone Board .......................
Cabinet (Top) ASSY
LCD Board .............
AC Inlet Board, Power Board, VOL SEL Board
Tuner Board ......................
BATT Board, BATT COM Board
Main Board .............................
CD Board, TC Board, Optical Pick-up Block,
Mechanism Deck .......................................................
M321 (Capstan/Reel Motor), Belt,

HRP301 Head, Magnetic (Record/Playback),
HE301 Head (Erase)i........
Optical pick»up (KSS-213C)

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._.._.

.-

ADJUSTMENTS

4-1.
4-2.

Mechanical Adjustments
Electrical Adjustments ..

DIAGRAMS

5-1.
5-2.
5-3.
5-4.
5-5.
5-6.
5-7.
5-8.
5-9.
5-10.
5-11.
5-12.
5-13,
5-14.
5-15.
5-16.
5-17,

Explanation of 1C Terminals
Block Diagram ~ Tuner/TC Section A
Block Diagram ~ Main Section _
Block Diagram ~ CD Section - ..
Printed Wiring Board ~ Tuner Section A .
Schematic Diagram - Tuner Section
Printed Wiring Board - CD Section P ..
Schematic Diagram ~ CD Section S ..
Printed Wiring Board ~ TC Section 4
Schematic Diagram - TC Section - ..
Printed Wiring Board - Main Section ~
Schematic Diagram ~ Main Section (1/2) 7
Schematic Diagram ~ Main Section (2/2) S
Printed Wiring Board - Control Section - ..
Schematic Diagram ~ Control Section A .
Printed Wiring Board ~ Power Supply Section -

. 32
Schematic Diagram ~ Power Supply Section 4 33

EXPLODED VIEWS

6-1.
6-2.
6-3.
6-4.
6-5.
6-6.

.38
.39
.40
.41
.42
.43

Cabinet (Front) Assy ..
Cabinet (Rear) Assy
Cabinet Top Assy
Mechanism Deck Section (1)
Mechanism Deck Section (2) .
Optical Pick-up Block Section

ELECTRICAL PARTS LIST ...................................... 44