Sony HCD-N455KW / LBT-N455KRW Service Manual ▷ View online
— 3 —
TABLE OF CONTENTS
1. SERVICING NOTE
............................................................ 4
2. GENERAL
........................................................................... 4
3. DISASSEMBLY
3-1. Front Panel Assembly and Main Board ................................. 6
3-2. TC Mechanism Deck ............................................................. 6
3-3. CD Mechanism Deck ............................................................. 7
3-4. BU Bracket Assembly ............................................................ 7
3-5. Disc Table .............................................................................. 8
3-2. TC Mechanism Deck ............................................................. 6
3-3. CD Mechanism Deck ............................................................. 7
3-4. BU Bracket Assembly ............................................................ 7
3-5. Disc Table .............................................................................. 8
4. MECHANICAL ADJUSTMENTS
................................. 9
5. ELECTRICAL ADJUSTMENTS
DECK Section ............................................................................... 9
TUNER Section ........................................................................... 12
CD Section ................................................................................... 13
TUNER Section ........................................................................... 12
CD Section ................................................................................... 13
6. DIAGRAMS
6-1. Block Diagrams
• Tuner Section ..................................................................... 15
• CD Section ......................................................................... 17
• Deck Section ...................................................................... 19
• Main Section ...................................................................... 21
• CD Section ......................................................................... 17
• Deck Section ...................................................................... 19
• Main Section ...................................................................... 21
6-2. Circuit Boards Location ....................................................... 23
6-3. Printed Wiring Board — Tuner Section — .......................... 24
6-4. Schematic Diagram — Tuner Section — ............................. 25
6-5. Printed Wiring Board — BD Section — .............................. 27
6-6. Schematic Diagram — BD Section — ................................ 29
6-7. Printed Wiring Board — Main Section — .......................... 33
6-8. Schematic Diagram — Main Section — ............................. 37
6-9. Schematic Diagram — Deck Section — ............................. 41
6-10. Printed Wiring Board — Deck Section — ......................... 45
6-11. Printed Wiring Board — Key Con Section — ................... 47
6-12. Schematic Diagram — Key Control Section — ................ 47
6-13. Printed Wiring Board — CD Motor Section — ................. 49
6-14. Schematic Diagram — CD Motor Section — .................... 50
6-15. Printed Wiring Board — CD Panel Section — .................. 52
6-16. Schematic Diagram — CD Panel Section — ..................... 53
6-17. Schematic Diagram — ST SW Section — ........................ 55
6-18. Printed Wiring Board — ST SW Panel Section — ............ 57
6-19. Schematic Diagram — Panel Section — ........................... 59
6-20. Printed Wiring Board — Panel Section — ........................ 63
6-21. IC Block Diagrams ............................................................. 67
6-22. IC Pin Functions
6-3. Printed Wiring Board — Tuner Section — .......................... 24
6-4. Schematic Diagram — Tuner Section — ............................. 25
6-5. Printed Wiring Board — BD Section — .............................. 27
6-6. Schematic Diagram — BD Section — ................................ 29
6-7. Printed Wiring Board — Main Section — .......................... 33
6-8. Schematic Diagram — Main Section — ............................. 37
6-9. Schematic Diagram — Deck Section — ............................. 41
6-10. Printed Wiring Board — Deck Section — ......................... 45
6-11. Printed Wiring Board — Key Con Section — ................... 47
6-12. Schematic Diagram — Key Control Section — ................ 47
6-13. Printed Wiring Board — CD Motor Section — ................. 49
6-14. Schematic Diagram — CD Motor Section — .................... 50
6-15. Printed Wiring Board — CD Panel Section — .................. 52
6-16. Schematic Diagram — CD Panel Section — ..................... 53
6-17. Schematic Diagram — ST SW Section — ........................ 55
6-18. Printed Wiring Board — ST SW Panel Section — ............ 57
6-19. Schematic Diagram — Panel Section — ........................... 59
6-20. Printed Wiring Board — Panel Section — ........................ 63
6-21. IC Block Diagrams ............................................................. 67
6-22. IC Pin Functions
• IC501 Display Control (ASD0204GF-012-3BA)/
Panel board ...................................................................... 72
• IC701 Master Control (TMP87CS64YF-6521) ............... 73
7. EXPLODED VIEWS
7-1. Cabinet and Back Panel Section .......................................... 76
7-2. Panel Board Section ............................................................. 77
7-3. Front Panel Section .............................................................. 78
7-4. Chassis Section .................................................................... 79
7-5. TC Mechanism Section 1 (TCM-220WR2E) ...................... 80
7-6. TC Mechanism Section 2 (TCM-220WR2E) ...................... 81
7-7. TC Mechanism Section 3 (TCM-220WR2E) ...................... 82
7-8. CD Mechanism Section (CDM37-5BD19) .......................... 83
7-9. Base Unit Section (BU-5BD19) ........................................... 84
7-2. Panel Board Section ............................................................. 77
7-3. Front Panel Section .............................................................. 78
7-4. Chassis Section .................................................................... 79
7-5. TC Mechanism Section 1 (TCM-220WR2E) ...................... 80
7-6. TC Mechanism Section 2 (TCM-220WR2E) ...................... 81
7-7. TC Mechanism Section 3 (TCM-220WR2E) ...................... 82
7-8. CD Mechanism Section (CDM37-5BD19) .......................... 83
7-9. Base Unit Section (BU-5BD19) ........................................... 84
8. ELECTRICAL PARTS LIST
......................................... 85
— 4 —
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use
the procedure in the printed matter which is included in the repain
parts.
The flexible board is easily damaged and should be handled with
care.
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use
the procedure in the printed matter which is included in the repain
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.
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.
LASER DIODE AND FOCUS SEARCH OPERATION CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output three times.
that the S curve waveform is output three times.
SECTION 1
SERVICING NOTE
FL Display Tube, LED All Lit and Key Check mode
When the TUNER/BAND , DISPLAY/DEMO , and FILE 2 but-
tons are pressed simultaneously, the FL display tube and LEDs will
all light up. Press any button to enter the key check mode.
When the key check mode is entered, the FL display tube displays
“K 1 J0 V0”. Each time a button is pressed, the counter increases in
the following order, K 2
tons are pressed simultaneously, the FL display tube and LEDs will
all light up. Press any button to enter the key check mode.
When the key check mode is entered, the FL display tube displays
“K 1 J0 V0”. Each time a button is pressed, the counter increases in
the following order, K 2
n K 3 n K 4.
If buttons already pressed once are pressed again, the counter will
not increase. When the VOLUME knob is rotated in the + direction,
the count increases in the following order.
V1
not increase. When the VOLUME knob is rotated in the + direction,
the count increases in the following order.
V1
n V2 n V3.
When rotated in the – direction, it decreases in the following order.
V0
V0
n V9 n V8.
When the AMS dial is rotated in the clockwise direction, the count
increases in the following order.
J1
increases in the following order.
J1
n J2 n J3.
When rotated in the counterclockwise direction, it decreases in the
following order.
J0
following order.
J0
n J9 n J8.
To exit form the test mode, press the TUNER/BAND , DISPLAY/
DEMO , FILE 2 buttons simultaneously again.
DEMO , FILE 2 buttons simultaneously again.
Switching the channel step 9 kHz/10 kHz
Press ENTER/NEXT button and SYSTEM POWER button simul-
taneously to switch the AM channel step 9 kHz and 10 kHz. Be sure
not to change with carelessness.
taneously to switch the AM channel step 9 kHz and 10 kHz. Be sure
not to change with carelessness.
All Reset
When TUNER/BAND , DISPLAY/DEMO , and FILE3 buttons
are pressed simultaneously, the contents of a preset are restored to
those at shipping.
are pressed simultaneously, the contents of a preset are restored to
those at shipping.
SECTION 2
GENERAL
This section is extracted from
instruction manual.
instruction manual.
— 5 —
— 6 —
SECTION 3
DISASSEMBLY
Note :
Follow the disassembly procedure in the numerical order given.
3-1. FRONT PANEL ASSEMBLY AND MAIN BOARD
3-2. TC MECHANISM DECK
1
Push the eject button. (two positions)
1
Remove the connectors.
• Main board (Six connectors)
• ST SW board (Four connectors)
• AMPLIFIER board (One connector)
• TRANS board (One connector)
• Main board (Six connectors)
• ST SW board (Four connectors)
• AMPLIFIER board (One connector)
• TRANS board (One connector)
3
Wire
2
Screw (BVTT 3x6)
6
Screw (BVTP 3x8)
7
Two screws (BVTP 3x8)
9
Main board
4
Three screws
(BVTP 3x8)
(BVTP 3x8)
5
Front panel
assembly
assembly
CN201
CN703
CN3103, CN3107,
CN3108
CN3108
CN1604
CN3101
CN1204
8
Two screws
(BVTP 3x8)
(BVTP 3x8)
CN203
CN402
CN702
CN401
2
Two cassette lids
Eject button
Eject button
5
Mechanism deck
3
Three screws
(BVTP 2.6x8)
(BVTP 2.6x8)
4
Four screws
(BVTP 2.6x8)
(BVTP 2.6x8)
