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CFD-G30L/G50L
AEP Model
UK Model
Singapore Model
CFD-G30L/G50L
Australian Model
CFD-G30L
Argentina Model
CFD-G50L
SERVICE MANUAL
CD RADIO CASSETTE-CORDER
SPECIFICATIONS
Model Name Using Similar Mechanism
CFD-V27L
CD
CD Mechanism Type
KSM-213CDP
Section
Optical Pick-up Name
KSS-213C
Tape deck
Model Name Using Similar Mechanism
CFD-V27L
Section
Tape Transport Mechanism Type
MF-V5-117
Sony Corporation
Personal Audio Company
Shinagawa Tec Service Manual Production Group
9-927-696-12
2001D1600-1
© 2001.4
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: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 + 0.5/-1.5 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM
:
87.5 ­ 108 MHz
MW
:
531 ­ 1,602 kHz
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. 110 sec. with Sony cassette C-60
Frequency response
TYPE I (normal) : 70 ­ 13,000 Hz
General
Speaker
Full range : 10 cm (4 in.) dia., 3.2
, cone type (2)
Woofer : 8 cm (3 1/4 in.) dia., 4
, cone type (1)
Inputs
LINE IN (stereo minijack) : Sensetivity 436 mV
Outputs
Headphones jack (stereo minijack)
For 16 ­ 68
impedance headphones
Maximum power output
Full range : 4 W + 4 W
Woofer : 12W
Power requirements
For CD radio cassette-corder :
230V AC, 50 Hz
12V DC, 8 size D (R 20) batteries
For remote contorol (CFD-G50L only):
3V DC, 2 size AA (R6) batteries
Power consumption
AC 30W
Battery life
For CD radio cassette-corder:
FM recording
Sony R20P : approx. 8 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. 500
× 206 × 328 mm (w/h/d)
(19 3/4
× 8 1/
8
× 13 inches) (incl. projecting
parts)
Mass
Approx. 7 kg (15 lb. 7 oz) (incl. batteries)
Supplied accessories
Mains lead (1)
Remote control (1) (CFD-G50L only)
Design and specifications are subject to change without notice.
PHOTO : CFD-G50L
Ver 1.1 2001.04


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-- 2 --
TABLE OF CONTENTS
1. SERVICE NOTES ···························································· 3
2. GENERAL ·········································································· 4
3. DISASSEMBLY
3-1.
Front Cabinet Assy ····························································· 5
3-2.
Control-1, Headphone Board ············································· 6
3-3.
Cabinet (Upper) Assy ························································· 6
3-4.
Power, Batt, Tuner, Batt Com Board ·································· 7
3-5.
Main, Line In, LCD Board ················································· 7
3-6.
CD Board, Optical Pick-up Section,
Mechanism Deck ································································ 8
3-7.
Belt ····················································································· 8
4. ADJUSTMENT
4-1.
Mechanical Adjustment ······················································ 9
4-2.
Electrical Adjustment ························································· 9
5. DIAGRAM
5-1.
Circuit Boards Location ··················································· 12
5-2.
Block Diagrams ­ Tuner/CD Section ­ ···························· 13
­ Main Section ­ ······························································· 15
5-3.
Schematic Diagram ­ CD Section ­ ································· 18
5-4.
Printed Wiring Board ­ CD Section ­ ······························ 21
5-5.
Schematic Diagram ­ Cassette Deck Section ­ ················ 23
5-6.
Printed Wiring Board ­ Cassette Deck Section ­ ············· 25
5-7.
Schematic Diagram ­ Tuner Section ­ ····························· 27
5-8.
Printed Wiring Board ­ Tuner Section ­ ·························· 29
5-9.
Printed Wiring Board ­ Main Section ­ ··························· 31
5-10. Schematic Diagram ­ Main Section (1/2) ­ ····················· 33
5-11. Schematic Diagram ­ Main Section (2/2) ­ ····················· 35
5-12. Printed Wiring Board and Schematic Diagram
­ Control Section ­ ·························································· 37
5-13. Schematic Diagram ­ Power Section ­ ···························· 39
5-14. Printed Wiring Board ­ Power Section ­ ························· 41
5-15. IC Pin Function Description ············································· 43
5-16. IC Block Diagrams ··························································· 45
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.
1.
Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
and bridges.
2.
Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3.
Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4.
Look for parts which, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
5.
Check the B+ voltage to see it is at the values specified.
6.
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.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
6. EXPLODED VIEWS
6-1.
Front Cabinet Section ······················································· 49
6-2.
Rear Cabinet Section ························································ 50
6-3.
Upper Cabinet Section ······················································ 51
6-4.
Mechanism Deck Section (1) (MF-V5-117) ···················· 52
6-5.
Mechanism Deck Section (2) (MF-V5-117) ···················· 53
6-6.
Optical Pick-up Section (KSM-213CDP) ························ 54
7. ELECTRICAL PARTS LIST ··································· 55


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SECTION 1
SERVICE 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.
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 from 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
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Press CD open knob.
2. Open the lid for CD.
3. Push on SWITCH (S701) 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.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
The following caution label is located inside the unit.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Insert a precision screw driver
and push SWITCH (S701)


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SECTION 2
GENERAL
1
CD Z PUSH OPEN/CLOSE button
2
CD LID
3
CD u button
4
VOLUME + button
5
VOLUME
- button
6
CD x button
7
Speaker
8
LINE button
9
SOUND button
0
POWER DRIVE WOOFER button
qa
PLAY MODE (MONO/ST) button
qs
i
Phone jack
qd
DISPLAY ENT MEMORY button
qf
SLEEP button
qg
POWER button
qh
Tape operation buttons
z
button
N
button
m button
M button
x, Z button
X
button
qj
CASSETTE LID
qk
PRESET
- button
ql
RADIO BAND AUTO PRESET button
w;
PRESET + button
wa
TUNE ., > buttons
ws
Information display OPR/BATT indicator
wd
AC IN jack
wf
FM rod antenna
wg
Battery compartment
wh
LINE IN jack
1,2
,wf,wg,wh
3
ws
wd
wa
ql
qk
qj
w;
8
qs
0 9
qa
qh
qg
qd
qf
4
7
5
6
LOCATION AND FUNCTION OF CONTROLS


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SECTION 3
DISASSEMBLY
Note :
Follow the disassembly procedure in the numerical order given.
· The equipment can be removed using the following procedure.
3-1.
FRONT CABINET ASSY
Main, LIine in, Lcd board
CD board,
Optical pick-up section,
Mechanism deck, belt
Control-1, Headphone board
Cabinet (upper) assy
Cabinet (front) sub assy
Set
Power, Batt, Tuner, batt com board
0
Connector
qa
Cabinet (front) sub assy
1
Lid, battery case
9
Flexible
7
Open the Lid (CD) in
the direction of the arrow.
3
Three screws
+BVTP 3
× 12
8
Screw
+BVTP 3
× 10
2
Five screws
+BVTP 3
× 12
4
Screw
+BVTP 3
× 16
5
Screw
+BVTP 3
× 16
6
Remove the Handle
in the direction of the arrow.