CFD-44 - Sony Audio Service Manual (repair manual)

cfd-44 service manual
Model
CFD-44
Pages
34
Size
629.1 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / S/M CFD-44 96 US,CAN,AEP,UK
File
cfd-44.pdf
Date

Read Sony CFD-44 Service Manual online

US Model
Canadian Model
AEP Model
UK Model
CFD-44
SERVICE MANUAL
CD RADIO CASSETTE-CORDER
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
With 6-ohm loads, both channel driven from 150-10,000 Hz, rated 4 W
per channel-minimum RMS power, with no more then 10% total harmonic
distortion in AC operation. (US model)
CD player section
System
Compact disc digital audio system
Laser diode properties
Material : GaAlAs
Wave Length : 780nm
Emission duration : Continuous
Laser output : Less than 44.6mW
(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 +1 / –2 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM : 87.6 - 107 MHz (AEP, UK model)
87.6 - 108 MHz (US, Canadian model)
87.5 - 108 MHz (Italian model)
AM : 530 - 1,710kHz (US, Canadian model)
531 - 1,602kHz (AEP, UK, Italian model)
IF
FM : 10.7MHz
AM : 450kHz
Aerials
FM : Telescopic aerial
AM : Built-in ferrite bar aerial
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 115s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal) : 70-10,000Hz
General
Speaker
Full range : 10 cm dia., 3.2 ohms, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones
Power output (excluding US model)
4.5W + 4.5W (at 10% harmonic distortion in DC operation)
– Continued on page 2 –
SPECIFICATIONS
MICROFILM
Model Name Using 
sumilar Mechanism
CD Section
New
Tape section
CFD-9
Optical Pick-up Type
KSM-213BGN/S-N
Tape Transport Mechanism Type
MF-CFD28
– 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
2. GENERAL
Location and Function of Controls ............................................ 5
3. DISASSEMBLY
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. ADJUSTMENTS
4-1. Mechanical Adjustment ...................................................... 9
4-2. Electrical Adjustment .......................................................... 9
5. EXPLAMNATION OF IC TERMINALS ................... 15
6. DIAGRAMS
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. EXPLODED VIEWS
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
Section
Title
Page
______
____
____
TABLE OF CONTENTS
AC 120V
60Hz
: US, Canadian model
AC 220V–230V
50Hz : AEP, Italian model
AC 230V
50Hz
: UK model
MODEL NO.
CFD-44
MODEL IDENTIFICATION
– 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.
For customers in Europe
– 3 –
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 cir-
cuit 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.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SECTION 1
SERVICING NOTES
 NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
 OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 
! OR DOTTED LINE
WITH MARK 
! 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.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-up
block. Therefore, when checking the laser diode emission, observe
more than 30 cm away from the  objective lens.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 
! SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
– 4 –
1
 GEAR (C)
1
 Turn the gear (C) in the direction of the arrow.
2
 When the gear (P) reaches the position shown in the
     fiqure, rotate towards the arrow (A) position.
3
 Pull out the disk table once it comes out a little.
GEAR (C)
2
 GEAR (P)
3
A
r
 Tray (slide) getting out procedure on the power supply is OFF.
Page of 34
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Here you can read online and download Sony CFD-44 Service Manual in PDF. CFD-44 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CFD-44 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.