Sony cfd 770 service manual

Page 1

US Model
Canadian Model

SPECIFICATIONS

Model Name Using
Similar Mechanism

CD Section CFD-750/760

Tape Section NEW

AUDIO POWER SPECIFICATIONS _ . 1

POWER OUTPUT AND TOTAL HARMONIC DISTDRTION
With Mhm toads, both Channels driven lmm 150-10900 HZ: rated 9 W per channel-minimum
HMS power, with no more than 10% total harmonic distortion in AC operatlon.

. Other Specifications

CD player section
System Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength 780 nm
Emission duration: Continuous
Laser output: Less than 446»W*
*This output is the value measured at a
distance of about 200 mm from the
objective lens surface on the optical pick-up

block.
Spindle speed 200 rpm to 500 rpm. (CLV)
Error correction Sony Super Strategy Cross Interleave Read

Solomon Code
Number of channels 2
Frequency response 20-20000 H215 dB
Wow and flutter Below measurable limit

Radio section
Frequency range FM: 876-108 MHz
AM: 530-1710 kHz
Antennas FM: Telescopic antenna
AM: Built-in ferrite bar antenna

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
DOLBY" and the double-D symbol DC] are trademarks of
Dolby Laboratories Licensing Corporation.

Tape Transport
Mechanism Type

Optical Device Name KSM-21OBAN

DECK A: MF-770PB-65
DECK B: MF-770RP-65

Tape recorder secti
Recording system
Fast winding time
Frequency response
Speaker

Power output

Inputs

Outputs

Power requirements

on and general
4-track 2-channel stereo
Approx, 140 sec with Sony cassette 0-60
- TYPE I (NORMAL) cassette: ISO-13,000 Hz
0 TYPE ll (CrOz) cassette: 60-16000 Hz
Two-way speakers: Woofer: 10 cm dia, cone
type, Tweeter: 5 cm
Model for Canada
Twoway speakers: 10 W + 10 W (at 4
ohms, 315 Hz, 10% harmonic distortion)
Mixing microphone input jack (minijack)
Sensitivity 2.5 mV
For low impedance microphone
Headphones lack (stereo minijack)
For 16-68 ohms impedance headphones
Two CD output jacks (phone jack)
Load impedance 10 kilohms or higher
Rated output 098 V rms at load
impedance 47 kilohms
120 V AC, 60 Hz
DC 12 V, 8 size D (R20) batteries for CD
radio cassette-corder
DC 6 V, 4 size AA (R6) batteries for
clock/timer/memory

_ Continued on next page -

CD RADIU CASSETTE-BBRDER

ONY;

Page 2

CFD-77O

Power consumption

Model for USA AC 40 W

Model Ior Canada Ac 56 w Dimensmns 23;; E593; nglmflcggld)
r , . . B 8 4
Battery life Batteries for radio cassette corder incl. projecting pans and controls
Recording Playback CD playing Weight Approx. 11 kg, incl. batteries
Sony SUM<1 (NS) approx. 2 H approx 05 H approx. 20 M (Approx 24 'b 4 02)
i Supplied accessories AC power cord (1)
Sony Alkaline AM1 (N) approx 5.5 H approx 1.5 H approx. 1 H Remote commander (1)
For clock/timer/memory: Approx 1 year Design and specifications subject to change without notice.
TABLE OF CONTENTS SAFETY-RELATED COMPONENT WARNING
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
Section Title Page LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
S if. r .......... OPERATION. REPLACE THESE cOMPONENTs WITH
Peel mums """"""""""" 1 SONY PARTs WHOSE PART NUMBERS APPEAR As
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
1. SERVICING NOTES LISHED BY soNv.

5.

S-lr
5-2.
5-3
5-4.

5-6.
5-7.
5-8,

Safety Check-Out ......................... 3
Notes on Handling the Optical Pick-up

Block or Base Unit
Notes on Laser Diode Emission Check
Chuck Plate Jig on Repairing ~~~~~~~~~~~~~~~ 4

Notes on Repairing ~~~~~~~~~~~~~~~~~~~~~~ 4
Laser Diode and Focus Search

Operation Check ......................... 4
GENERAL ............................. 5
DISASSEMBLY ......................... 12
ADJUSTMENTS

Mechanical Adjustment ~~~~~~~~~~~~~~~~~~~ 16
Tape Recorder Section -------------------- 15
Electrical Adjustment ~~~~~ 17
Tape Recorder Section . . 17
Tuner Section ~~~~~ . 20
CD Section

DIAG RAMS

Main Block Printed Wiring Boards
Main Block Schematic Diagram ~ ~
TC Block Schematic Diagram

TC Block Printed Wiring Boards -----
CD Control Printed Wiring Boards .
CD Control Schematic Diagram ~~~~~~~~~~~~~ 43

Power Block Schematic Diagram 48
Power Block Printed Wiring Boards --------- 53
EXPLODED VIEWS ------------------- 55
ELECTRICAL PARTS LIST ------------ 61

ATTENTION AU COMPOSANT AVANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A
SUR LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.