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SERVICE MANUAL
Sony Corporation
Personal Audio Division
Published by Sony Engineering Corporation
US Model
Canadian Model
E Model
Australian Model
CFD-G500
AEP Model
CFD-G500/G500L
UK Model
CFD-G500L
CD RADIO CASSETTE-CORDER
9-877-730-05
2005J16-1
© 2005.10
Ver. 1.4 2005.10
SPECIFICATIONS
CFD-G500/G500L
Model Name Using Similar Mechanism
CFD-S250L
CD
CD Mechanism Type
KSM-213RDP/KSM-213CDP
Section
Optical Pick-up Type
KSS-213R/KSS-213C
TAPE
Model Name Using Similar Mechanism
CFD-S250L
Section
Tape Transport Mechanism Type
MF-G500
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
CFD-G500
FM
87.5 - 108 MHz
AM
531 - 1 611 kHz
CFD-G500L
FM
87.5 - 108 MHz
MW
531 - 1 611 kHz (9 kHz step)
530 - 1 610 kHz (10 kHz step)
LW
153 - 279 kHz
IF
FM: 10.7 MHz
AM/MW/LW: 450 kHz
Aerials
FM: Telescopic aerial
AM/MW/LW: Built-in ferrite bar aerial
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal): 70 - 13 000 Hz
General
Speaker
Full range: 10 cm dia., 3.2
, cone type (2)
Woofer: 10 cm dia., 4
, cone type (1)
Input
LINE IN jack (stereo minijack):
Minimum input level 330 mV
Output
Headphones jack (stereo minijack)
For 16 - 68
impedance headphones
Maximum power output
Full range: 8 W
Woofer: 12 W
Power requirements
For CD radio cassette-corder:
230V AC, 50 Hz
12 V DC, 8 R20 (size D) batteries
For remote control:
3 V DC, 2 R03 (size AAA) batteries
Power consumption
AC 30 W
Battery life
For CD radio cassette-corder:
FM recording
Sony R20P: approx. 6 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
× 327 × 241 mm (w/h/d)
(incl. projecting parts)
Mass
Approx. 8 kg (incl. batteries)
Supplied accessory
Mains lead (1)
Remote control (1)
Design and specifications are subject to change
without notice.
Photo : CFD-G500


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2
CFD-G500/G500L
Notes on chip component replacement
·Never reuse a disconnected chip component.
·
Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
·Keep the temperature of 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.
TABLE OF CONTENTS
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
1.
SERVICING NOTES ............................................... 3
2.
GENERAL ................................................................... 4
3.
DISASSEMBLY
3-1.
Cabinet (Upper) Section-1 ...............................................
5
3-2.
Cabinet (Upper) Section-2 ...............................................
6
3-3.
Cabinet (Front) Section ...................................................
6
3-4.
CONTROL 2 Board, CONTROL 3 Board ......................
7
3-5.
LCD Board ......................................................................
7
3-6.
POWER Board, TRANS Board .......................................
8
3-7.
CONTROL 1 Board ........................................................
8
3-8.
H/P Board, TUNER Board ..............................................
9
3-9.
MAIN Board ....................................................................
9
3-10. CD Block Section ............................................................ 10
3-11. Tape Mechanism Deck .................................................... 10
3-12. TC Board ......................................................................... 11
3-13. MAIN Belt, Sub Belt ....................................................... 11
4.
MECHANICAL ADJUSTMENTS ......................... 12
5.
ELECTRICAL ADJUSTMENTS .......................... 12
6.
DIAGRAMS
6-1.
Block Diagrams ­ MAIN Section ­ ................................ 16
­ TUNER/CD Section ­ .................................................. 17
6-2.
Printed Wiring Board ­ CD Section ­ ............................. 18
6-3.
Schematic Diagram ­ CD Section ­ ................................ 19
6-4.
Printed Wiring Board
­ TUNER Section (AEP, UK, CET Model) ­ ................ 20
6-5.
Schematic Diagram
­ TUNER Section (AEP, UK, CET Model) ­ ................ 21
6-6.
Printed Wiring Board
­ TUNER Section (US, CND, E, SP, AUS Model) ­ ..... 22
6-7.
Schematic Diagram
­ TUNER Section (US, CND, E, SP, AUS Model) ­ ..... 23
6-8.
Printed Wiring Board ­ TC Section ­ .............................. 24
6-9.
Schematic Diagram ­ TC Section ­ ................................ 25
6-10. Printed Wiring Board ­ MAIN Section ­ ........................ 26
6-11. Schematic Diagram ­ MAIN Section (1/2) ­ .................. 27
6-12. Schematic Diagram ­ MAIN Section (2/2) ­ .................. 28
6-13. Printed Wiring Board ­ LCD Section ­ ........................... 29
6-14. Printed Wiring Board ­ POWER Section ­ ..................... 30
6-15. Schematic Diagram ­ POWER Section ­ ....................... 31
7.
EXPLODED VIEWS
7-1.
Overall Section ................................................................ 36
7-2.
Cabinet (Front) Section ................................................... 37
7-3.
Cabinet (Rear) Section .................................................... 38
7-4.
Cabinet (Upper) Section-1 ............................................... 39
7-5.
Cabinet (Upper) Section-2 ............................................... 40
7-6.
Tape Mechanism Deck Section ....................................... 41
8.
ELECTRICAL PARTS LIST .................................. 42


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3
CFD-G500/G500L
SECTION 1
SERVICING NOTES
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, "metallized" knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The "limit" indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
0.15
µF
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
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 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 (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.
S801


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CFD-G500/G500L
SECTION 2
GENERAL
This section is extracted
from instruction manual.
Remote Control
Location of controls
FUNCTION
BAND
VOL +*, ­
x
.,>
Z PUSH
OPEN/CLOSE
VOL +*, ­
TUNE ­, +
DISPLAY
ENTER
MEMORY
MODE
i
Number buttons
x
u*
LINE
OPR/BATT
Loading a CD
With the labeled side up
Inserting a cassette
With the side you want to
play facing upward
RADIO BAND
AUTO PRESET
SOUND
Display
Remote sensor
Total track number
Programmed track
Playing order
DE
Total playing time
Display
*The button has a tactile dot.
., >
PRESET ­, +
N
X
SLEEP
MODE
TUNE+, ­
WOOFER
SOUND
SLEEP
LINE IN
POWER DRIVE WOOFER
OPERATE
(POWER)
OPERATE
(POWER)
*


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5
CFD-G500/G500L
SECTION 3
DISASSEMBLY
·This set can be disassembled in the order shown below.
Note: Follow the disassembly procedure in the numerical order given.
3-1. CABINET (UPPER) SECTION-1
3-3. CABINET (FRONT) SECTION
(Page 6)
3-4. CONTROL 2 BOARD,
CONTROL 3 BOARD
(Page 7)
3-5. LCD BOARD
(Page 7)
3-6. POWER BOARD
TRANS BOARD
(Page 8)
3-7. CONTROL 1 BOARD
(Page 8)
3-8. H/P BOARD
TUNER BOARD
(Page 9)
3-2. CABINET (UPPER) SECTION-2
(Page 6)
3-1. CABINET (UPPER) SECTION-1
(Page 5)
3-9. MAIN BOARD
(Page 9)
3-10. CD BLOCK SECTION
(Page 10)
3-12. TC BOARD
(Page 11)
3-13. MAIN Belt, Sub Belt
(Page 11)
3-11. TAPE MECHANISM
DECK (Page 10)
SET
2
seven screws
(BVTP 3
× 14)
4
two screws
(BVTP 3
× 14)
6
two screws
(BVTP 3
× 14)
1
Open the handle in the
direction of the arrow.
3
Open the cassette lid.
5
Open the CD lid.