1
SERVICE MANUAL
CFD-S300
CD RADIO CASSETTE-CORDER
Other Specifications
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
SPECIFICATIONS
Radio section
Frequency range
FM: 87.5 - 108 MHz
US, CND, E92, MX model:
AM: 530 - 1,710 kHz
AUS, KR, SP, TW model:
AM: 531 - 1,611 kHz (9 kHz step)
530 - 1,610 kHz (10 kHz step)
Antennas
FM: Telescopic antenna
AM: Built-in ferrite bar antenna
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): 80 - 10,000 Hz
Ver. 1.3 2005.12
9-877-647-04
2005L04-1
© 2005.12
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
With 3.2-ohm loads, both channels driven from
150 - 6,300 Hz; rated 1.8 W per channel-
minimum RMS power, with no more than 10%
total harmonic distortion in AC operation.
US Model
Canadian Model
E Model
Australian Model
CD
Model Name Using Similar Mechanism CFD-S250
Section
CD Mechanism Type
KSM-213RDP
Optical Pick-up Name
KSS-213R
TC
Model Name Using Similar Mechanism CFD-S250
Section Tape Transport Mechanism Type
MF-S200
Continued on next page
Sony Corporation
Personal Audio Division
Published by Sony Engineering Corporation
2
General
Speaker
Full range: 10 cm dia.,
3.2
, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 68
impedance headphones
Power output
2.3 W + 2.3 W (at 3.2
, 10%
harmonic distortion)
Power requirements
For CD radio cassette-corder:
US, CND, E92, MX, TW model:
120 V AC, 60 Hz
AUS, SP model:
230 V AC, 50 Hz
KR model:
220 V AC, 60 Hz
9 V DC, 6 size D (R20) batteries
For remote control:
3 V DC, 2 size AAA (R03) batteries
Power consumption
AC 14 W
Battery life
For CD radio cassette-corder:
FM recording
Sony R20P: approx. 13.5 h
Sony alkaline LR20: approx. 20 h
Tape playback
Sony R20P: approx. 7.5 h
Sony alkaline LR20: approx. 15 h
CD playback
Sony R20P: approx. 2.5 h
Sony alkaline LR20: approx. 7 h
Dimensions
Approx. 414
× 164 × 257 mm (w/h/d)
(16 3/8
× 6 1/2 × 10 1/8 inches) (incl. projecting parts)
Mass
Approx. 3.6 kg (7 lb. 15 oz.) (incl. batteries)
Supplied accessories
AC power cord (1)
Remote control (RMT-CS200A) (1)
Design and specifications are subject to change without
notice.
CFD-S300
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.
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
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.
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS 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 PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
·Abbreviation
CND
: Canadian model
E92
: AC 120V area in E model
AUS: Australian model
KR
: Korean model
MX
: Mexican model
SP
: Singapore model
TW
: Taiwan model
Ver 1.1
3
CFD-S300
· UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
· Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
· Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
· Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
TABLE OF CONTENTS
1. SERVICING NOTES ......................................................... 4
2. GENERAL ............................................................................ 5
3. DISASSEMBLY
3-1. Cabinet Top Assy ................................................................ 7
3-2. Cabinet Front Assy, Cabinet Bottom Assy .......................... 7
3-3. Wires ................................................................................... 8
3-4. MD Block ............................................................................ 8
3-5. Cassette Holder ................................................................... 9
3-6. Main Board ......................................................................... 9
3-7. Tuner Board ....................................................................... 10
3-8. Power Board ...................................................................... 10
3-9. CD Lid ............................................................................... 11
3-10. CD Block Assy .................................................................. 11
3-11. Optical Pick-up ................................................................. 12
3-12. R/P Head (HRP301), TC Board ........................................ 12
3-13. Motor Assy (M801), Main Belt (B), Sub Belt (B) ............ 13
4. MECHANICAL ADJUSTMENTS ............................... 14
5. ELECTRICAL ADJUSTMENTS
Tape Section .......................................................................... 14
Tuner Section ......................................................................... 15
CD Section ............................................................................ 16
6. DIAGRAMS
6-1. IC Pin Description ............................................................. 17
6-2. Circuit Boards Location .................................................... 17
6-3. Block Diagram CD Section ......................................... 18
6-4. Block Diagram Main Section ...................................... 19
6-5. Printed Wiring Board CD Section ............................... 20
6-6. Schematic Diagram CD Section .................................. 21
6-7. Printed Wiring Board Tuner Section ........................... 22
6-8. Schematic Diagram Tuner Section .............................. 23
6-9. Printed Wiring Boards Main Section .......................... 24
6-10. Schematic Diagram Main Section (1/2) ...................... 25
6-11. Schematic Diagram Main Section (2/2) ...................... 26
6-12. Printed Wiring Board TC Section ............................... 27
6-13. Schematic Diagram TC Section .................................. 28
6-14. Printed Wiring Boards Control Section ....................... 29
6-15. Schematic Diagram Control Section ........................... 30
6-16. Printed Wiring Boards Power Supply Section ............ 31
6-17. Schematic Diagram Power Supply Section ................. 32
6-18. IC Block Diagrams ............................................................ 33
7. EXPLODED VIEWS
7-1. Cabinet Section ................................................................. 36
7-2. Cabinet (Front) Section ..................................................... 37
7-3. Cabinet (Top) (1) Section .................................................. 38
7-4. Cabinet (Top) (2) Section .................................................. 39
7-5. Cabinet (Bottom) Section .................................................. 40
7-6. Tape Mechanism Section .................................................. 41
7-7. CD Mechanism Section .................................................... 42
8. ELECTRICAL PARTS LIST ......................................... 43
4
CFD-S300
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the lid (CD), 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. Turn ON the [OPERATE] button and press [CD] button to CD
position.
2. Open the CD lid.
3. Turn on S801 with screwdriver, etc. as following figure.
4. Press the N X (CD) button.
5. 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 three times for focus search.
S801
5
CFD-S300
SECTION 2
GENERAL
This section is extracted
from instruction manual.
Remote Control
Location of controls
FUNCTION
BAND
u
POWER
VOL , +*
x
.,>
PRESET , +
MEGA BASS
VOLUME , +*
., >
TUNE , +
DISPLAY
ENT
MEMORY
MODE
i
Number buttons
x
u*
POWER
SLEEP
OPR/BATT
Loading a CD
With the labeled side up
Inserting a cassette
With the side you want
to play facing you
CD
RADIO BAND
AUTO PRESET
TAPE
Display
Remote sensor
Total track number
Programmed track
Playing order
DE
Total playing time
Display
*The button has a tactile dot.
Z PUSH
OPEN/CLOSE
*