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CFD-G30/G50
US Model
Canadian Model
E Model
SERVICE MANUAL
CD RADIO CASSETTE-CORDER
SPECIFICATIONS
Model Name Using Similar Mechanism
CFD-G35
CD
CD Mechanism Type
KSM-213CDR
Section
Optical Pick-up Name
KSS-213C
Tape deck
Model Name Using Similar Mechanism
CFD-V17
Section
Tape Transport Mechanism Type
MF-V10-117
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
9-927-676-14
2005I16-1
© 2005.09
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 3.2
loads, both channels driven from 150 ­ 10,000 Hz; rated 2.5 W
per channel-minimum RMS power, with no more than 10 % total harmonic
distortion in AC operation.
Woofer with 4-ohm loads, driven at 50 -150 Hz; rated 9.5 W minimum RMS
power, with no more 10 % total harmonic distortion in AC operation.
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 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
:
87.6 ­ 108 MHz
AM
:
530 ­ 1,710 kHz
Aerials
FM
:
Telescopic antenna
AM
:
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
Speakers
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
Power output (excluding US model)
Full range :
4 W + 4 W (at 3.2
, 10 % harmonic
distortion in DC operation)
Woofer :
12W (at 3.2
, 10 % harmonic distortion in
DC operation)
Power requirements
For CD radio cassette-corder :
120V AC, 60 Hz
12V DC, 8 size D (R 20) batteries
For remote contorol (CFD-G50 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
AC power cord (1)
Remote control (1) (CFD-G50 only)
Design and specifications are subject to change without notice.
PHOTO : CFD-G50
Ver. 1.3 2005.09


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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, Head Phone 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
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 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
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-V10-117) ·················· 52
6-5.
Mechanism Deck Section (2) (MF-V10-117) ·················· 53
6-6.
Optica Pick-up Section (KSM-213CDP) ························· 54
7. ELECTRICAL PARTS LIST ··································· 55
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS 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 PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
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
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)
SAFETY CHECK-OUT
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.


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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 (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.
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(S801)


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-- 4 --
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 jack
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
AUTO PRESET
- button
ql
RADIO BAND AUTO PRESET button
w;
AUTO 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
Control-1, Head phone board
Cabinet (upper) assy
Front cabinet assy
Set
Power, Batt, Tuner, batt com board
!º Connector
!¡ Front cabinet 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 Screws
+BVTP 3
× 12
4 Screw
+BVTP 3
× 16
5 Screw
+BVTP 3
× 16
6 Remove the Handle
in the direction of the arrow.