Sony HTC-W555 / MHC-W555 Service Manual ▷ View online
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HTC-W555
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Tourist Model
SPECIFICATIONS
SERVICE MANUAL
COMPACT DISC DECK
Model Name Using Similar Mechanism
HCD-H991AV
CD Mechanism Type
CDM38-5BD29A
Base Unit Type
BU-5BD29AL
Optical Pick-up Type
KSS-213B/S-N
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
TCM-230AWR1
CD
SECTION
TAPE
DECK
SECTION
HTC-W555 is the deck and CD
section in MHC-W555/W777.
section in MHC-W555/W777.
MICROFILM
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CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• 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.
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
The following
caution label is
located inside of
the unit.
caution label is
located inside of
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.
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
repair 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
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, ob-
serve 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, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
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.
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TABLE OF CONTENTS
1. SERVICING NOTE
.......................................................... 4
2. GENERAL
.......................................................................... 7
3. DISASSEMBLY
3-1. Loading Panel ........................................................................ 8
3-2. Back Panel and CD Mechanism Deck .................................. 8
3-3. Front Panel ........................................................................... 9
3-4. TC Mechanism Deck and Cassette Holder ........................... 9
3-5. Disc Tray ........................................................................... 10
3-2. Back Panel and CD Mechanism Deck .................................. 8
3-3. Front Panel ........................................................................... 9
3-4. TC Mechanism Deck and Cassette Holder ........................... 9
3-5. Disc Tray ........................................................................... 10
4. MECHANICAL ADJUSTMENTS
..........................
11
5. ELECTRICAL ADJUSTMENTS
............................... 11
6. DIAGRAMS
6-1. Circuit Boards Location ...................................................... 15
6-2. Block Diagrams
6-2. Block Diagrams
• CD Section ....................................................................... 17
• Deck Section .................................................................... 19
• Main Section .................................................................... 21
• Deck Section .................................................................... 19
• Main Section .................................................................... 21
6-3. Printed Wiring Board – CD Section – ................................. 25
6-4. Schematic Diagram – CD Section – .................................... 27
6-5. Schematic Diagram – Deck Section – ................................. 29
6-6. Printed Wiring Board – Deck Section – .............................. 31
6-7. Printed Wiring Board – Main Section – .............................. 33
6-8. Schematic Diagram – Main (1/2) Section – ........................ 35
6-9. Schematic Diagram – Main (2/2) Section – ........................ 37
6-10. Printed Wiring Board – Leaf SW Section – ...................... 39
6-11. Schematic Diagram – Leaf SW Section – ......................... 39
6-12. Printed Wiring Board – Panel Section – ............................ 41
6-13. Schematic Diagram – Panel Section – .............................. 43
6-14. Schematic Diagram – CD Motor Section – ....................... 45
6-15. Printed Wiring Board – CD Motor Section – .................... 47
6-16. IC Block Diagrams ............................................................ 49
6-17. IC Pin Functions ................................................................ 52
6-4. Schematic Diagram – CD Section – .................................... 27
6-5. Schematic Diagram – Deck Section – ................................. 29
6-6. Printed Wiring Board – Deck Section – .............................. 31
6-7. Printed Wiring Board – Main Section – .............................. 33
6-8. Schematic Diagram – Main (1/2) Section – ........................ 35
6-9. Schematic Diagram – Main (2/2) Section – ........................ 37
6-10. Printed Wiring Board – Leaf SW Section – ...................... 39
6-11. Schematic Diagram – Leaf SW Section – ......................... 39
6-12. Printed Wiring Board – Panel Section – ............................ 41
6-13. Schematic Diagram – Panel Section – .............................. 43
6-14. Schematic Diagram – CD Motor Section – ....................... 45
6-15. Printed Wiring Board – CD Motor Section – .................... 47
6-16. IC Block Diagrams ............................................................ 49
6-17. IC Pin Functions ................................................................ 52
7. EXPLODED VIEWS
7-1. Case and Back Panel Section .............................................. 59
7-2. Front Panel Section ............................................................. 60
7-3. CD Mechanism Section 1 (CDM38-5BD29A) ................... 61
7-4. CD Mechanism Section 2 (CDM38-5BD29A) ................... 62
7-5. Base Unit Section (BU-5BD29A) ....................................... 63
7-6. TC Mechanism Section 1 (TCM230AWR1) ....................... 64
7-8. TC Mechanism Section 2 (TCM230AWR1) ...................... 65
7-2. Front Panel Section ............................................................. 60
7-3. CD Mechanism Section 1 (CDM38-5BD29A) ................... 61
7-4. CD Mechanism Section 2 (CDM38-5BD29A) ................... 62
7-5. Base Unit Section (BU-5BD29A) ....................................... 63
7-6. TC Mechanism Section 1 (TCM230AWR1) ....................... 64
7-8. TC Mechanism Section 2 (TCM230AWR1) ...................... 65
8. ELECTRICAL PARTS LIST
........................................ 66
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SECTION 1
SERVICING NOTE
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH
TURNS OFF
TURNS OFF
1
Remove the Case.
Note for Installation (ROTARY ENCODER)
3
Pull-out the disc tray.
2
Turn the cam to the
direction of arrow.
BU cam
Groove
Section A
Note:When attaching the Base unit, Insert the
section A into the groove of BU cam.
section A into the groove of BU cam.
Note:When attaching the BU cam,
engage the Rotary encoder
switch as shown in the figure.
engage the Rotary encoder
switch as shown in the figure.
