Sony CFD-S20CP Service Manual ▷ View online
3
TABLE OF CONTENTS
1. SERVICING NOTES
......................................................... 4
2. GENERAL
............................................................................ 5
3. DISASSEMBLY
3-1. Cabinet Top Assy ................................................................ 7
3-2. Cabinet Front Assy, Cabinet Rear Assy .............................. 7
3-3. Wires ................................................................................... 8
3-4. MD Block ............................................................................ 8
3-5. Cassette Door Assy ............................................................. 9
3-6. LCD Board, Control (4) Board ........................................... 9
3-7. Main Board ....................................................................... 10
3-8. Tuner Board ....................................................................... 10
3-9. Power Board ...................................................................... 11
3-10. CD Lid ............................................................................... 11
3-11. CD Block Assy .................................................................. 12
3-12. Optical Pick-up ................................................................. 12
3-13. R/P Head (HRP301), TC Board ........................................ 13
3-14. Motor Assy (M801), Main Belt (B), Sub Belt (B) ............ 13
3-2. Cabinet Front Assy, Cabinet Rear Assy .............................. 7
3-3. Wires ................................................................................... 8
3-4. MD Block ............................................................................ 8
3-5. Cassette Door Assy ............................................................. 9
3-6. LCD Board, Control (4) Board ........................................... 9
3-7. Main Board ....................................................................... 10
3-8. Tuner Board ....................................................................... 10
3-9. Power Board ...................................................................... 11
3-10. CD Lid ............................................................................... 11
3-11. CD Block Assy .................................................................. 12
3-12. Optical Pick-up ................................................................. 12
3-13. R/P Head (HRP301), TC Board ........................................ 13
3-14. 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
Tuner Section ......................................................................... 15
CD Section ............................................................................ 16
6. DIAGRAMS
6-1. IC Pin Descriptions ........................................................... 17
6-2. Circuit Boards Location .................................................... 19
6-3. Block Diagram – CD Section – ......................................... 20
6-4. Block Diagram – Main Section – ...................................... 21
6-5. Printed Wiring Board – CD Section – ............................... 22
6-6. Schematic Diagram – CD Section – .................................. 24
6-7. Printed Wiring Board – Tuner Section – ........................... 25
6-8. Schematic Diagram – Tuner Section – .............................. 26
6-9. Printed Wiring Boards – Main Section – .......................... 27
6-10. Schematic Diagram – Main Section (1/2) – ...................... 28
6-11. Schematic Diagram – Main Section (2/2) – ...................... 29
6-12. Printed Wiring Board – TC Section – ............................... 30
6-13. Schematic Diagram – TC Section – .................................. 31
6-14. Printed Wiring Boards – Control Section – ....................... 32
6-15. Schematic Diagram – Control Section – ........................... 33
6-16. Printed Wiring Boards – Display Section – ...................... 34
6-17. Schematic Diagram – Display Section – ........................... 35
6-18. Printed Wiring Boards – Power Supply Section – ............ 36
6-19. Schematic Diagram – Power Supply Section – ................. 37
6-20. IC Block Diagrams ............................................................ 38
6-2. Circuit Boards Location .................................................... 19
6-3. Block Diagram – CD Section – ......................................... 20
6-4. Block Diagram – Main Section – ...................................... 21
6-5. Printed Wiring Board – CD Section – ............................... 22
6-6. Schematic Diagram – CD Section – .................................. 24
6-7. Printed Wiring Board – Tuner Section – ........................... 25
6-8. Schematic Diagram – Tuner Section – .............................. 26
6-9. Printed Wiring Boards – Main Section – .......................... 27
6-10. Schematic Diagram – Main Section (1/2) – ...................... 28
6-11. Schematic Diagram – Main Section (2/2) – ...................... 29
6-12. Printed Wiring Board – TC Section – ............................... 30
6-13. Schematic Diagram – TC Section – .................................. 31
6-14. Printed Wiring Boards – Control Section – ....................... 32
6-15. Schematic Diagram – Control Section – ........................... 33
6-16. Printed Wiring Boards – Display Section – ...................... 34
6-17. Schematic Diagram – Display Section – ........................... 35
6-18. Printed Wiring Boards – Power Supply Section – ............ 36
6-19. Schematic Diagram – Power Supply Section – ................. 37
6-20. IC Block Diagrams ............................................................ 38
7. EXPLODED VIEWS
7-1. Main Section ..................................................................... 40
7-2. Cabinet Front Section ........................................................ 41
7-3. Cabinet Top Section .......................................................... 42
7-4. Cabinet Rear Section ......................................................... 43
7-5. Tape Mechanism Section .................................................. 44
7-6. CD Mechanism Section .................................................... 45
7-2. Cabinet Front Section ........................................................ 41
7-3. Cabinet Top Section .......................................................... 42
7-4. Cabinet Rear Section ......................................................... 43
7-5. Tape Mechanism Section .................................................. 44
7-6. CD Mechanism Section .................................................... 45
8. ELECTRICAL PARTS LIST
......................................... 46
CFD-S20CP
Ver 1.5
SAFETY CHECK-OUT (US MODEL)
After correcting the original service problem, perform the following
safety check 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.
After correcting the original service problem, perform the following
safety check 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 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
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 microampers.).
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.
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” indica-
tion 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 2 V AC range are
suitable. (See Fig. A)
tion 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 2 V AC range are
suitable. (See Fig. A)
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
4
CFD-S20CP
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
Chuck Plate Jig.
• Code number of Chuck Plate Jig: X-4918-255-1
SECTION 1
SERVICING NOTES
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
1. Turn ON the [POWER] 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
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.
Optical Pick-up is broken.
Objective lens moves up and down three times for focus search.
S801
5
CFD-S20CP
SECTION 2
GENERAL
Location of controls
Loading a CD
With the labeled side up
Inserting a cassette
With the side you want
to play facing you
to play facing you
Total track number
Programmed track
Playing order
Total playing time
Display
CD
MEGA BASS
Z
PUSH
OPEN/CLOSE
VOL +*, –
.
,
>
TUNE –, +
DISPLAY
ENT
MEMORY
ENT
MEMORY
MODE
REPEAT
i
Number buttons
x
u
*
POWER
SLEEP
OPR/BATT
RADIO BAND
AUTO PRESET
AUTO PRESET
TAPE
Display
Remote sensor
MP3
FOLDER –
FOLDER +
SOUND
*The button has a tactile dot.
*
6
CFD-S20CP
• The equipment can be removed using the following procedure.
SECTION 3
DISASSEMBLY
3-1.
CABINET TOP ASSY
(Page 7)
(Page 7)
3-2.
CABINET FRONT ASSY,
CABINET REAR ASSY
(Page 7)
CABINET REAR ASSY
(Page 7)
3-11. CD BLOCK ASSY
(Page 12)
SET
3-3.
WIRES
(Page 8)
(Page 8)
3-4.
MD BLOCK
(Page 8)
(Page 8)
3-7.
MAIN BOARD
(Page 10)
(Page 10)
3-5.
CASSETTE DOOR ASSY
(Page 9)
(Page 9)
3-6.
LCD BOARD,
CONTROL (4) BOARD
(Page 9)
CONTROL (4) BOARD
(Page 9)
3-10. CD LID
(Page 11)
3-8.
TUNER BOARD
(Page 10)
(Page 10)
3-13. R/P HEAD (HRP301),
TC BOARD
(Page 13)
(Page 13)
3-14. MOTOR ASSY (M801),
MAIN BELT (B),
SUB BELT (B)
(Page 13)
SUB BELT (B)
(Page 13)
3-9.
POWER BOARD
(Page 11)
(Page 11)
3-12. OPTICAL PICK-UP
(Page 12)
