CFD-G70L - Sony Audio Service Manual (repair manual)

Model
CFD-G70L
Pages
52
Size
4.72 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cfd-g70l.pdf
Date

View Sony CFD-G70L Service Manual online

CFD-G70L
SERVICE MANUAL
CD RADIO CASSETTE-CORDER
SPECIFICATIONS
AEP Model
UK Model
E Model
Model Name Using
CD Section
CFD-S40CP
Similar Mechanism
Tape Section
CFD-S40CP
CD Mechanism Type
KSM-213CDP
Optical Pick-up Type
KSS-213C
Tape Transport Mechanism Type
MF-V5-117
Ver. 1.3  2005.07
With SUPPLEMENT-1
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 
µW
(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
87.5 - 108 MHz
MW
531 - 1 602 kHz (9 kHz step)
530 - 1 610 kHz (10 kHz step)
LW
153 - 279 kHz
IF
FM: 10.7 MHz
MW/LW: 450 kHz
Aerials
FM: Telescopic aerial
MW/LW: Built-in ferrite bar aerial
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 sec. with Sony cassette C-60
Frequency response
TYPE I (normal): 70 - 13 000 Hz
General
Speakers
Main speaker: 10 cm (4
 
 in.) dia., 3.2  , cone type (2)
Subwoofer: 8 cm (3 
1
 in.) dia., 4  , cone type (1)
GAME Xpand: 5 cm (2
 
in.) dia., 12  , cone type (2)
Inputs
GAME/LINE IN jack (stereo minijack): sensitivity
436 mV
Outputs
Headphones jack (stereo minijack): for 16 - 68 
impedance headphones
– Continued on page 2 –
9-873-147-04
2005G02-1
© 2005.07
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
2
CFD-G70L
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 
0 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.
TABLE OF CONTENTS
Specifications ............................................................................... 1
1. SERVICING NOTES
...................................................... 3
2. GENERAL
Location and Function of Controls ....................................... 5
3. DISASSEMBLY
3-1.   Cabinet (Front) ASSY, Cabinet (Rear) ASSY ............. 6
3-2.   Control-1 Board, Control-2 Board .............................. 7
3-3.   Headphone Board ........................................................ 7
3-4.   Cabinet Top ASSY ....................................................... 8
3-5.   LCD Board .................................................................. 8
3-6.   AC Inlet Board, Power Board ...................................... 9
3-7.   Tuner Board ................................................................. 9
3-8.   BATT Board, BATT COM Board .............................. 10
3-9.   Main Board ................................................................ 10
3-10. CD Board, TC Board, Optical Pick-up Block,
Mechanism Deck ....................................................... 11
3-11. M321 (Capstan/Reel Motor), Belt,
“HRP301 Head, Magnetic (Record/Playback)”
HE301 Head (Erase) .................................................. 11
3-12. Optical pick-up (KSS-213C) ..................................... 12
4. ADJUSTMENTS
4-1.   Mechanical Adjustments ............................................ 13
4-2.   Electrical Adjustments ............................................... 13
5. DIAGRAMS
5-1. Explanation of IC Terminals ...................................... 17
5-2. Block Diagram – Tuner/TC Section – ....................... 19
5-3. Block Diagram – Main Section – .............................. 20
5-4. Block Diagram – CD Section – ................................. 21
5-5. Printed Wiring Board – Tuner Section – ................... 22
5-6. Schematic Diagram – Tuner Section – ...................... 23
5-7. Printed Wiring Board – CD Section – ....................... 24
5-8. Schematic Diagram – CD Section – .......................... 25
5-9. Printed Wiring Board – TC Section – ........................ 26
5-10. Schematic Diagram – TC Section – .......................... 26
5-11. Printed Wiring Board – Main Section – .................... 27
5-12. Schematic Diagram – Main Section (1/2) – .............. 28
5-13. Schematic Diagram – Main Section (2/2) – .............. 29
5-14. Printed Wiring Board – Control Section – ................ 30
5-15. Schematic Diagram – Control Section – ................... 31
5-16. Printed Wiring Board – Power Supply Section – ...... 32
5-17. Schematic Diagram – Power Supply Section – ......... 33
6. EXPLODED VIEWS
6-1.   Cabinet (Front) Assy .................................................. 38
6-2.   Cabinet (Rear) Assy ................................................... 39
6-3.   Cabinet Top Assy ....................................................... 40
6-4.   Mechanism Deck Section (1) (MF-V5-117) .............. 41
6-5.   Mechanism Deck Section (2) (MF-V5-117) .............. 42
6-6.   Optical Pick-up Block Section (KSM-213CDP) ....... 43
7. ELECTRICAL PARTS LIST
...................................... 44
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.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Maximum power output
Main speaker: 8 W
Subwoofer: 12 W
GAME Xpand: 2.4 W
Power requirements
For CD radio cassette-corder:
Argentine model: 220 - 230 V AC, 50 Hz
Other models: 230 V AC, 50 Hz
12 V DC, 8 R20 (size D) batteries
For remote control:
3 V DC, 2 R6 (size AA) batteries
Power consumption
 AC 35 W
Battery life
For CD radio cassette-corder:
FM recording
Sony R20P: approx. 6.5 h
Sony alkaline LR20: approx. 18 h
Tape playback
Sony R20P: approx. 1.5 h
Sony alkaline LR20: approx. 6 h
CD playback
Sony R20P: approx. 1 h
Sony alkaline LR20: approx. 4 h
Dimensions
Approx. 530   195   342  mm  (w/h/d)
(20 
7
8
 7 
x
x
3
4
  
13 
1
 inches)
 
(incl. projecting parts)
Mass
Approx. 7.4 kg (16 lb. 5 oz) (incl. batteries)
Supplied accessories
Mains lead (1)
Remote control (1)
AV connecting cord (1)
Audio connecting cord (1)
Design and specifications are subject to change without
notice.
Infomation
For customers in Europe
This Compact Disc player is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT label is located at the bottom
of the player.
3
CFD-G70L
 NOTES ON HANDLING THE OPTICAL PICK-UP
 BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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.
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.
 CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
• Code number of Chuck Plate Jig : X-4918-255-1
SECTION 1
SERVICING NOTES
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Press CD open knob.
2. Open the lid for CD.
3. Push on SWITCH (S801) as following figure.
4. Confirm the laser diode emission while observing the
objecting lens. When there is no emission, Auto Power
Control circuit or Optical Pick-up is broken.
Objective lens moves up and down once for the focus
search.
Insert a precision 
screw driver and push  
SWITCH (S801)
4
CFD-G70L
• Service Position
Note: For removal, a screwdriver with the long shaft 25cm or more is required.
Repair without removing Headphone board.
Cabinet (front) ASSY
Tuner board
Cabinet top ASSY
Main board
Cabinet (rear) ASSY
5
CFD-G70L
SECTION 2
GENERAL
LOCATION AND FUNCTION OF CONTROLS
This section is extracted from
instruction manual.
1 Tape operation buttons
REC  z
PLAY N
REW m
FF M
STOP/EJECT x/Z
PAUSE X
2 PRESET – button
3 PRESET + button
4 CD u  button
5 CD x button
6 VOLUME –/+ button
7 Z PUSH  OPEN/CLOSE
8 GAME/LINE button
9 GAME Xpand button
0 MODE button
qa SOUND button
qs RADIO BAND/AUTO PRESET button
qd POWER DRIVE WOOFER button
qf CD: AMS > button
Radio: TUNE + button
qg CD: AMS . button
Radio: TUNE – button
qh Remote sensor
qj Display window
qk GAME/LINE IN jack
ql i jack
w; OPR/BATT indicator
wa DISPLAY ENT/MEMORY button
ws OPERATE button
wd SLEEP button
0
8
9
qa
qh
qd
qj
qk
ql
qs
qf
qg
wd
w;
wa
ws
1
6
23 45
7
6
CFD-G70L
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (FRONT) ASSY, CABINET (REAR) ASSY
z
 
The equipment can be removed using the following procedure.
Set
Cabinet (front) ASSY
Cabinet (rear) ASSY
Cabinet top ASSY
LCD board
AC inlet board, Power board
BATT board, 
BATT COM board
Main board
Tuner board
CD board, TC board, 
Optical pick-up block, 
Mechanism deck
M321 (Capstan/Reel motor), 
Belt, HRP301 Head, magnetic, 
HE301 Head (Erase)
Optical pick-up (KSS-213C)
Control-1 board, Control-2 board
Headphone board
1
8
4
2
 Screw 
(+BVTP 3 
×
 20)
2
 Screw 
(+BVTP 3 
×
 20)
5
 Screw 
(+BVTP 3 
×
 10)
6
 Flexible cable
(from Main board CNP805)
7
 Connectors
(from Headphone board CN391, 394, 396)
3
 Screws 
(+BVTP 3 
×
 14)
3
 Screws 
(+BVTP 3 
×
 14)
3
 Screws 
(+BVTP 3 
×
 14)
Cabinet (rear) ASSY
Cabinet (front) ASSY
Lid, battery case
7
CFD-G70L
3-2. CONTROL-1 BOARD, CONTROL-2 BOARD
3-3. HEADPHONE BOARD
1
 Screws 
(+BVTP 2.6 
×
 8)
4
 Screws 
(+BVTP 2.6 
×
 8)
4
 Screws (+BVTP 2.6 
×
 8)
3
 Control-1 board
8
 Control-2 board
6
 Button (operate)
6
 Button (volume)
7
 Button (top) sub ASSY
Button (front)
5
2
2
 Screw 
(+PWH 2 
×
 6)
1
 Connector
(from Headphone board CNP395)
1
 Connector
(from Headphone board CNP392)
1
 Connector
(from Headphone board CNP393)
3
 Jack hold board
Headphone board 
4
8
CFD-G70L
3-5. LCD BOARD
3-4. CABINET TOP ASSY
2
 Screws (+BVTP 3 
×
 10)
1
 Connector
(from Tuner board CNP1)
1
 Connector
(from Power board CNP903)
4
3
Cabinet top ASSY
1
 Screws 
(+BVTP 3 
×
 10)
LCD board
2
 Flexible cable
    (from Main board CNP803)
3
9
CFD-G70L
3-6. AC INLET BOARD, POWER BOARD,
3-7. TUNER  BOARD
2
 Screws 
(+BVTP 3 
×
 10)
3
 Screws 
(+BVTP 3 
×
 10)
5
 Screw
(+BVTP 3 
×
 10)
5
 Screw
(+BVTP 3 
×
 10)
1
 Connector
(from Power board 
CNP902)
Chassis (trans)
Power board
AC inlet board
4
6
3
 Screws 
(+BVTP 3 
×
 10)
1
 Screw 
(+BVTP 3 
×
 10)
4
2
Tuner board
Chassis (TU)
10
CFD-G70L
3-8. BATT BOARD, BATT COM BOARD
3-9. MAIN BOARD
1
 Screw 
(+WH 3 
×
 8)
3
 Claw
BATT COM board
BATT board
4
2
1
 Screws 
(+BVTP 3 
×
 10)
4
 Flexible cable
(from Main board CNP802)
2
 Flexible cable
(from Main board CNP801)
3
 Connector
(from Main board CNP322)
1
 Screw
(+BVTP 3 
×
 10)
Main board
5

Download Sony CFD-G70L Service Manual (Repair Manual)

Here you can view online and download Sony CFD-G70L Service Manual in PDF. CFD-G70L service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CFD-G70L 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.