HCD-N455KW, LBT-N455KRW — Sony Audio Service Manual (repair manual)

Model
HCD-N455KW LBT-N455KRW
Pages
53
Size
861 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-n455kw-lbt-n455krw.pdf
Date

View Sony HCD-N455KW / LBT-N455KRW Service Manual online

— 1 —
SERVICE MANUAL
Model Name Using Similar Mechanism
HCD-D570/N355/N355K
CD Mechanism Type
CDM37-5BD19
Base Unit Type
BU-5BD19
Optical Pick-up Type
KSS-213BA/S-N
Model Name Using Similar Mechanism
HCD-V4500
Tape Transport Mechanism Type
TCM-220WR2E
MICROFILM
CD
SECTION
SPECIFICATIONS
HCD-N455KW is the tuner, deck, CD
and amplifier section in LBT-N455KW.
TAPE
DECK
SECTION
HCD-N455KW
Thailand Model
COMPACT Hi-Fi
STEREO SYSTEM
— Continue on next page —
— 2 —
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of 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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
This caution
label is located
inside the unit.
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.
— 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
4. MECHANICAL ADJUSTMENTS
................................. 9
5. ELECTRICAL ADJUSTMENTS
DECK Section ............................................................................... 9
TUNER Section ........................................................................... 12
CD Section ................................................................................... 13
6. DIAGRAMS
6-1. Block Diagrams
• Tuner Section ..................................................................... 15
• 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
• 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
8. ELECTRICAL PARTS LIST
......................................... 85
— 4 —
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
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.
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.
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.
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 
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 
n V2 n V3.
When rotated in the – direction, it decreases in the following order.
V0 
n V9 n V8.
When the AMS dial is rotated in the clockwise direction, the count
increases in the following order.
J1 
n J2 n J3.
When rotated in the counterclockwise direction, it decreases in the
following order.
J0 
n J9 n J8.
To exit form the test mode, press the  TUNER/BAND  , DISPLAY/
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.
All Reset
When TUNER/BAND , DISPLAY/DEMO , and FILE3 buttons
are pressed simultaneously, the contents of a preset are restored to
those at shipping.
SECTION 2
GENERAL
This section is extracted from
instruction manual.
Page of 53
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Here you can view online or download Sony HCD-N455KW / LBT-N455KRW Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony HCD-N455KW / LBT-N455KRW Audio. Information contained in Sony HCD-N455KW / LBT-N455KRW service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).