Sony CFD-S26 Service Manual ▷ View online
3
TABLE OF CONTENTS
1. SERVICING NOTES
......................................................... 4
2. GENERAL
............................................................................ 7
3. DISASSEMBLY
3-1. Cabinet (Front) Sub Assy .................................................... 8
3-2. Wires ................................................................................... 9
3-3. Power (1) Board, Power (2) Board ...................................... 9
3-4. Voltage Select Board ......................................................... 10
3-5. Cabinet (Upper) Assy ........................................................ 10
3-6. Main Board ....................................................................... 11
3-7. CD Mechanism Block ....................................................... 11
3-8. Tape Mechanism Block ..................................................... 12
3-9. Holder Assy, Cassette ........................................................ 12
3-10. PRE Board ......................................................................... 13
3-11. Belt, M801 (Capstan/Reel Motor),
3-2. Wires ................................................................................... 9
3-3. Power (1) Board, Power (2) Board ...................................... 9
3-4. Voltage Select Board ......................................................... 10
3-5. Cabinet (Upper) Assy ........................................................ 10
3-6. Main Board ....................................................................... 11
3-7. CD Mechanism Block ....................................................... 11
3-8. Tape Mechanism Block ..................................................... 12
3-9. Holder Assy, Cassette ........................................................ 12
3-10. PRE Board ......................................................................... 13
3-11. Belt, M801 (Capstan/Reel Motor),
HRP301 (Head, Magnetic) ................................................ 13
3-12. Optical Pick-up ................................................................. 14
4. MECHANICAL ADJUSTMENTS
............................... 15
5. ELECTRICAL ADJUSTMENTS
Tape Section .......................................................................... 15
Tuner Section ......................................................................... 16
CD Section ............................................................................ 17
Tuner Section ......................................................................... 16
CD Section ............................................................................ 17
6. DIAGRAMS
6-1. IC Pin Description ............................................................. 18
6-2. Circuit Boards Location .................................................... 19
6-3. Block Diagram – CD Section (Former Type) – ................ 20
6-4. Block Diagram – Main Section (Former Type) – .............. 21
6-5. Printed Wiring Board – CD Section (Former Type) – ....... 22
6-6. Schematic Diagram – CD Section (Former Type) – ......... 23
6-7. Printed Wiring Boards – Main Section (Former Type) – .. 24
6-8. Schematic Diagram – Main Section (1/4) (Former Type) – .. 25
6-9. Schematic Diagram – Main Section (2/4) (Former Type) – .. 26
6-10. Schematic Diagram – Main Section (3/4) (Former Type) – .. 27
6-11. Schematic Diagram – Main Section (4/4) (Former Type) – .. 28
6-12. Printed Wiring Boards – Control Section (Former Type) – ... 29
6-13. Schematic Diagrams – Control Section (Former Type) – ...... 30
6-14. Printed Wiring Boards – Power Supply Section (Former Type) – .. 31
6-15. Schematic Diagrams – Power Supply Section (Former Type) – .... 32
6-16. Block Diagram – CD Section (New Type) – ..................... 33
6-17. Block Diagram – Main Section (New Type) – .................. 34
6-18. Printed Wiring Board – CD Section (New Type) – ........... 35
6-19. Schematic Diagram – CD Section (New Type) – .............. 36
6-20. Printed Wiring Boards – Main Section (New Type) – ...... 37
6-21. Schematic Diagram – Main Section (1/4) (New Type) – .. 38
6-22. Schematic Diagram – Main Section (2/4) (New Type) – .. 39
6-23. Schematic Diagram – Main Section (3/4) (New Type) – .. 40
6-24. Schematic Diagram – Main Section (4/4) (New Type) – .. 41
6-25. Printed Wiring Boards – Control Section (New Type) – ... 42
6-26. Schematic Diagrams – Control Section (New Type) – ..... 43
6-27. Printed Wiring Boards – Power Supply Section (New Type) – .. 44
6-28. Schematic Diagrams – Power Supply Section (New Type) – .... 45
6-2. Circuit Boards Location .................................................... 19
6-3. Block Diagram – CD Section (Former Type) – ................ 20
6-4. Block Diagram – Main Section (Former Type) – .............. 21
6-5. Printed Wiring Board – CD Section (Former Type) – ....... 22
6-6. Schematic Diagram – CD Section (Former Type) – ......... 23
6-7. Printed Wiring Boards – Main Section (Former Type) – .. 24
6-8. Schematic Diagram – Main Section (1/4) (Former Type) – .. 25
6-9. Schematic Diagram – Main Section (2/4) (Former Type) – .. 26
6-10. Schematic Diagram – Main Section (3/4) (Former Type) – .. 27
6-11. Schematic Diagram – Main Section (4/4) (Former Type) – .. 28
6-12. Printed Wiring Boards – Control Section (Former Type) – ... 29
6-13. Schematic Diagrams – Control Section (Former Type) – ...... 30
6-14. Printed Wiring Boards – Power Supply Section (Former Type) – .. 31
6-15. Schematic Diagrams – Power Supply Section (Former Type) – .... 32
6-16. Block Diagram – CD Section (New Type) – ..................... 33
6-17. Block Diagram – Main Section (New Type) – .................. 34
6-18. Printed Wiring Board – CD Section (New Type) – ........... 35
6-19. Schematic Diagram – CD Section (New Type) – .............. 36
6-20. Printed Wiring Boards – Main Section (New Type) – ...... 37
6-21. Schematic Diagram – Main Section (1/4) (New Type) – .. 38
6-22. Schematic Diagram – Main Section (2/4) (New Type) – .. 39
6-23. Schematic Diagram – Main Section (3/4) (New Type) – .. 40
6-24. Schematic Diagram – Main Section (4/4) (New Type) – .. 41
6-25. Printed Wiring Boards – Control Section (New Type) – ... 42
6-26. Schematic Diagrams – Control Section (New Type) – ..... 43
6-27. Printed Wiring Boards – Power Supply Section (New Type) – .. 44
6-28. Schematic Diagrams – Power Supply Section (New Type) – .... 45
7. EXPLODED VIEWS
7-1. Cabinet (Front) Section ..................................................... 48
7-2. Cabinet (Rear) Section ...................................................... 49
7-3. Cabinet (Upper) Section .................................................... 50
7-4. Tape Mechanism Section-1 ............................................... 52
7-5. Tape Mechanism Section-2 ............................................... 53
7-6. Optical Pick-up Section .................................................... 54
7-2. Cabinet (Rear) Section ...................................................... 49
7-3. Cabinet (Upper) Section .................................................... 50
7-4. Tape Mechanism Section-1 ............................................... 52
7-5. Tape Mechanism Section-2 ............................................... 53
7-6. Optical Pick-up Section .................................................... 54
8. ELECTRICAL PARTS LIST
......................................... 55
CFD-S26
To Exposed Metal
Parts on Set
Parts on Set
0.15µF
1.5k
Ω
AC
voltmeter
(0.75V)
voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
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.
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 microamperes).
Leakage current can be measured by any one of three methods.
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.
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)
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)
4
CFD-S26
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
1. Turn ON the POWER button and press FUNCTION button to
CHECK
1. Turn ON the POWER button and press FUNCTION button to
CD position.
2. Open the lid (CD).
3. Turn on S801 with screwdriver, etc. as following figure.
4. Press the CD N X button.
5. Confirm the laser diode emission while observing the objecting
3. Turn on S801 with screwdriver, etc. as following figure.
4. Press the CD N X 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
– MAIN BOARD (component side) –
MAIN Board Part No.
Former type : 1-679-963-12
New type : 1-679-963-14
Former type : 1-679-963-12
New type : 1-679-963-14
NOTE ON PERFORMING SERVICE AND INSPECTION
The main, CD, control (1), control (2), control (3), battery terminal (1), battery terminal (2), power (1) and power (2) board have two types,
former type and new type.
When performing service and inspection, check the part number on the main, CD, control (1), control (2), control (3), battery terminal (1),
battery terminal (2), power (1) and power (2) board.
former type and new type.
When performing service and inspection, check the part number on the main, CD, control (1), control (2), control (3), battery terminal (1),
battery terminal (2), power (1) and power (2) board.
5
CFD-S26
CONTROL (1) Board Part No.
Former type : 1-679-966-12
New type : 1-679-966-14
Former type : 1-679-966-12
New type : 1-679-966-14
– CONTROL (1) BOARD (component side) –
– CD BOARD (component side) –
CD Board Part No.
Former type : 1-680-943-11
New type : 1-680-943-13
Former type : 1-680-943-11
New type : 1-680-943-13
– CONTROL (2) BOARD (component side) –
CONTROL (2) Board Part No.
Former type : 1-679-967-12
New type : 1-679-967-14
Former type : 1-679-967-12
New type : 1-679-967-14
– CONTROL (3) BOARD (component side) –
CONTROL (3) Board Part No.
Former type : 1-679-968-12
New type : 1-679-968-14
Former type : 1-679-968-12
New type : 1-679-968-14
6
CFD-S26
– BATTERY TERMINAL (1) BOARD (component side) –
BATTERY TERMINAL (1) Board Part No.
Former type : 1-679-964-12
New type : 1-679-964-14
Former type : 1-679-964-12
New type : 1-679-964-14
– BATTERY TERMINAL (2) BOARD (component side) –
BATTERY TERMINAL (2) Board Part No.
Former type : 1-679-965-12
New type : 1-679-965-14
Former type : 1-679-965-12
New type : 1-679-965-14
– POWER (1) BOARD (component side) –
POWER (1) Board Part No.
Former type : 1-679-969-12
New type : 1-679-969-14
Former type : 1-679-969-12
New type : 1-679-969-14
– POWER (2) BOARD (component side) –
POWER (2) Board Part No.
Former type : 1-679-970-12
New type : 1-679-970-14
Former type : 1-679-970-12
New type : 1-679-970-14
