Sony HTC-V5550 / MHC-V5550 / MHC-V7770AV Service Manual ▷ View online
HTC-V5550
E Model
Chinese Model
SERVICE MANUAL
COMPACT DISC DECK
MICROFILM
This stereo system is equipped with the Dolby B-
type noise reduction system.
* Manufactured under license from Dolby
Laboratories Licensing Corporation.
DOLBY, the double-D symbol
type noise reduction system.
* Manufactured under license from Dolby
Laboratories Licensing Corporation.
DOLBY, the double-D symbol
a
and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing
Corporation.
Corporation.
Model Name Using Similar Mechanism
HCD-V717
CD
CD Mechanism Type
CDM38-5BD24
Section
Base Unit Type
BU-5BD24
Optical Pick-up Name
KSS-213BA/F-NP
Tape deck
Model Name Using Similar Mechanism
HTC-W555
Section
Tape Transport Mechanism Type
TCM-230AWR2
TCM-230PWR2
• This set is the deck and Video CD
section in MHC-V5550/V7770.
SPECIFICATIONS
Video section
Inputs
AV INPUT VIDEO (phono jack):
1Vp-p, 75
1Vp-p, 75
Ω
VIDEO IN (phono jack)
1Vp-p, 75
1Vp-p, 75
Ω
Outputs
MONITOR OUT (phono jack):
1Vp-p, 75
1Vp-p, 75
Ω
VIDEO OUT (phono jack)
1Vp-p, 75
1Vp-p, 75
Ω
S-VIDEO (4-pin/mini-DIN jack):
Y: 1Vp-p, unbalanced, sync negative
C: 0.286Vp-p, load impedance 75
Y: 1Vp-p, unbalanced, sync negative
C: 0.286Vp-p, load impedance 75
Ω
VIDEO CD/CD player section
System
Compact disc, digital audio video system
Laser
Semiconductor laser (
λ
=780nm)
Emission duradon: continuous
Laser output
Max. 44.6µW*
*This output is the value measured at a
diatance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
*This output is the value measured at a
diatance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
Frequency response
20 Hz – 20 kHz (±1 dB)
Wavelength
780 – 790 nm
Signal to noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Video Color System format
NTSC, PAL
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength
(Square optical connector jack, rear panel)
Wavelength
600 nm
Output Level
–18 dBm
Tape player section
Recording system
4-track 2-channel stereo
Frequency response
40 – 13,000 Hz (±3 dB),
(DOLBY NR OFF)
using Sony TYPE
cassette
40 – 14,000 Hz (±3 dB),
using Sony TYPE
cassette
cassette
40 – 14,000 Hz (±3 dB),
using Sony TYPE
cassette
Design and specifications are subject to change without notice.
— 2 —
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
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
• 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 PRODUCT MARKING is located on the
rear exterior.
The CLASS 1 LASER PRODUCT MARKING is located on the
rear exterior.
The following caution label is located inside of the unit.
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,
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
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.
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.
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
.......................................................................... 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 ................................................ 16
6-2. Block Diagrams
6-2. Block Diagrams
• Servo Section ................................................................... 17
• Audio/Video CD Section ................................................. 19
• Tape Deck Section ........................................................... 21
• Power Section .................................................................. 23
• Audio/Video CD Section ................................................. 19
• Tape Deck Section ........................................................... 21
• Power Section .................................................................. 23
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. Printed Wiring Board – Video Section – ..................... 49
6-17. Schematic Diagram – Video (1/2) Section – ............... 51
6-18. Schematic Diagram – Video (2/2) Section – ............... 53
6-19. IC Block Diagrams ..................................................... 58
6-20. IC Pin Functions Description ...................................... 60
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. Printed Wiring Board – Video Section – ..................... 49
6-17. Schematic Diagram – Video (1/2) Section – ............... 51
6-18. Schematic Diagram – Video (2/2) Section – ............... 53
6-19. IC Block Diagrams ..................................................... 58
6-20. IC Pin Functions Description ...................................... 60
7. EXPLODED VIEWS
7-1. Case and Back Panel Section ........................................ 67
7-2. Front Panel Section ....................................................... 68
7-3. CD Mechanism Section 1 (CDM38-5BD24) ................ 69
7-4. CD Mechanism Section 2 (CDM38-5BD24) ................ 70
7-5. Base Unit Section (BU-5BD24) ................................... 71
7-6. TC Mechanism Section 1 (TCM-230AWR2) ............... 72
7-8. TC Mechanism Section 2 (TCM-230AWR2) .............. 73
7-2. Front Panel Section ....................................................... 68
7-3. CD Mechanism Section 1 (CDM38-5BD24) ................ 69
7-4. CD Mechanism Section 2 (CDM38-5BD24) ................ 70
7-5. Base Unit Section (BU-5BD24) ................................... 71
7-6. TC Mechanism Section 1 (TCM-230AWR2) ............... 72
7-8. TC Mechanism Section 2 (TCM-230AWR2) .............. 73
8. ELECTRICAL PARTS LIST
........................................ 74
— 4 —
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.
