HCD-VX222, MHC-VX222 - Sony Audio Service Manual (repair manual)

Model
HCD-VX222 MHC-VX222
Pages
69
Size
7.01 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-vx222-mhc-vx222.pdf
Date

View Sony HCD-VX222 / MHC-VX222 Service Manual online

HCD-VX222
E Model
SERVICE MANUAL
MINI HI-FI COMPONENT SYSTEM
— Continued on next page —
SPECIFICATIONS
• HCD-VX222 is the tuner, deck, CD
and amplifier section in MHC-
VX222.
Ver 1.3  2003.12
9-873-210-04
2003L02-1
© 2003.12
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
Model Name Using Similar Mechanism
NEW
CD
CD Mechanism Type
CDM58B-K6BD37A
Section
Base Unit Name
BU-K6BD37A
Optical Pick-up Name
KSM-213DAP
Tape deck
Model Name Using Similar Mechanism
HCD-DX20/RG30
Section
Amplifier section
The following measured at AC 120, 220, 240 V
50/60 Hz
DIN power output (rated) 50 + 50 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
60 + 60 watts (6 ohms at
1 kHz, 10% THD)
Inputs
MD/VIDEO (AUDIO) IN (phono jacks):
voltage 450/250 mV,
impedance 47 kilohms
GAME (AUDIO) IN (phono jack):
voltage 450 mV,
impedance 47 kilohms
MIC 1/2 (mini jack):
sensitivity 1 mV,
impedance 10 kilohms
Outputs
MD/VIDEO (AUDIO) OUT (phono jacks):
voltage 250 mV
impedance 1 kilohms
VIDEO OUT (phono jack):
max. output level
1Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
S-VIDEO OUT (4-pin/mini-DIN jack):
Y: 1Vp-p, unbalanced,
Sync negative,
C: 0.286Vp-p,
load impedance 75 ohms
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
SPEAKER:
accepts impedance of 6 to
16 ohms
2
HCD-VX222
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.
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
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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 
0 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.
General
Power requirements
Thai model:
220 V AC, 50/60 Hz
Other models:
120 V, 220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption
120 watts
Dimensions (w/h/d)
Approx. 280 x   325  x  421 mm
Mass
Approx. 9.0 kg
Design and specifications are subject to change
without notice.
CD/VIDEO CD player section
System
Compact disc and digital
audio and video system
Laser
Semiconductor laser
( =780 nm)
Emission duration:
continuous
Wavelength
780 – 790 nm
Frequency response
2 Hz – 20 kHz (
±0.5 dB)
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
660 nm
Output Level
–18 dBm
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
40 – 13,000 Hz (
±3 dB),
using Sony TYPE I
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tourist model:
76.0 – 108.0 MHz
Other models:
87.5 – 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Middle Eastern and Philippine models:
531 – 1,602 kHz (with the
interval set at 9 kHz)
Other models:
531 – 1,602 kHz (with the
interval set at 9 kHz)
530 – 1,710 kHz (with the
interval set at 10 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
3
HCD-VX222
TABLE OF CONTENTS
1. SERVICE NOTE
.............................................................. 4
2. GENERAL
......................................................................... 5
3. DISASSEMBY
................................................................. 7
4. TEST MODE
................................................................... 13
5. ELECTRICAL ADJUSTMENTS
.............................. 17
6. DIAGRAMS
6-1.Circuit Board Location .................................................. 21
6-2.Block Diagrams  –Tuner Section– ................................. 22
   Block Diagrams  –Main Section– ................................. 23
       Block Diagrams  –Video Section– ................................ 24
6-3.Printed Wiring Board  –Driver Section– ........................ 25
6-4.Schematic Diagram  –Driver Section– .......................... 25
6-5.Printed Wiring Board  –BD Section– ............................ 26
6-6.Schematic Diagram  –BD Section – .............................. 27
6-7.Printed Wiring Board  –Main Section– .......................... 28
6-8.Schematic Diagram  –Main Section (1/5) – ................... 29
6-9.Schematic Diagram  –Main Section (2/5) – ................... 30
6-10. Schematic Diagram  –Main Section (3/5) – ................ 31
6-11. Schematic Diagram  –Main Section (4/5) – ................ 32
6-12. Schematic Diagram  –Main Section (5/5) – ................ 33
6-13. Printed Wiring Board  –Power AMP Section– ........... 34
6-14. Schematic Diagram  –Power AMP Section– .............. 35
6-15. Printed Wiring Board  –Panel Section– ...................... 36
6-16. Schematic Diagram  –Panel Section– ......................... 37
6-17. Printed Wiring Board  –Trans Section– ...................... 38
6-18. Schematic Diagram  –Trans Section– ......................... 39
6-19. Printed Wiring Board  –Video CD Section– ............... 40
6-20. Schematic Diagram  –Video CD Section (1/2) – ........ 41
6-21. Schematic Diagram  –Video CD Section (2/2) – ........ 42
6-22. IC Pin Function Description ....................................... 43
6-23. IC Block Diagrams ..................................................... 48
7. EXPLODED VIEWS
7-1.Main Section .................................................................. 52
7-2.Front Panel Section ........................................................ 53
7-3.Chassis Section .............................................................. 54
7-4.CD Mechanism Deck Section ........................................ 55
8. ELECTRICAL PARTS LIST
...................................... 56
4
HCD-VX222
SECTION 1
SERVICE NOTE
1
Connector 
      13p (CN712)
2
Cut the seven melted-connection points
     with a cutting plier.
4
Cut the six melted-connection points
     with a cutting plier.
3
Panel board
5
Key board
Panel board
(ten screw holes)
Key board
(eight screw holes)
Screw hole
In order to re-install the panel board and the key board,
fix them by using the screws (+BVTP 2.6
 
× 
8 ) respectively.
Screw in to the respective screw holes.
Do not tighten the screws excessively.
* The panel board and the key board only are connected to the front panel
  by means of hot-melting the plastics.
Note for installing the panel board and the key board
REMOVING THE PANEL BOARD AND THE KEY BOARD
Hot melt
5
HCD-VX222
This section is extracted from
instruction manual.
SECTION 2
GENERAL
6
HCD-VX222
Setting the time
1
 Turn on the system.
2
Press CLOCK/TIMER SET on the
remote.
Proceed to step 5 when “CLOCK” appears
in the display.
3
Press v or V
v
V
V
 repeatedly to select “SET
CLOCK”.
4
Press ENTER.
5
Press  
or 
v
 repeatedly to set the hour.
6
Press .
The minute indication flashes.
7
Press   or   repeatedly to set the
minute.
8
Press ENTER.
Tip
If you made a mistake or want to change the time,
start over from step 2.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
B
7
HCD-VX222
SECTION 3
DISASSEMBLY
3-1. CASE (SIDE-R, SIDE-L, TOP)
Note : Disassemble the unit in the order as shown below.
Note : Follow the disassembly procedure in the numerical order given.
Driver board, Moter board, Address sensor board
Chassis section
Case (Side-R, Side-L, Top)
CD door
Front panel section
CD mechanism deck
(CDM58B)
Key board
Panel board
Tape mechanism deck
Sub trans board, Video out board, Back panel, Power transformer
                                                                                   (Trans board)
Main board, Power amp board
Video board, Base unit, BD board
Set
Case (Side-R)
Case (Side-L)
5
qd
qs
qs
q;
Case (Top)
6
Two screws (Case 3 TP2)
8
Screw
     (+BVTP 3
 
×
 10)
3
Screw
     (+BVTP 3
 
×
 10)
9
Screw
     (+BVTT 3
 
×
 8)
4
Screw
     (+BVTT 3
 
×
 8)
1
Two screws
     (Case 3 TP2)
qa
Two screws (+BVTP 3
 
×
 12)
7
Screw (Case 3 TP2)
2
Screw (Case 3 TP2)
8
HCD-VX222
3-2. CD DDOR
3-3. CD MECHANISM DECK (CDM58B), FRONT PANEL SECTION, CHASSIS SECTION
2
 Pull-out the disc tray.
1
 Turn the pulley to the direction of arrow.
pulley
CD door
Front panel side
CD mechanism deck (CDM58B)
3
qg
qf
7
CD mechanism deck (CDM58B)
Front panel section
qs
Connector (B Deck)
qa
Connector (A Deck)
9
Connector
      (CN714) 
4
Screw
         (+BVTP3X10)
8
Wire (flat type)(CN2)
1
Wire (flat type)
      (CN102)
2
Connector 
      (CN701)
3
Connector
      (CN301) 
qd
Three screws (+BVTP 3
 
× 
6)
q;
Screw 
     (+BVTP 3
 
× 
10)
5
Screw
      (+BVTP 3
 
×
 10)
6
Screw (+BVTP 3
 
×
 10)
Chassis section
9
HCD-VX222
3-4. TAPE MECHANISM DECK
3-5. PANEL BOARD
1
Six screws
     (+BVTP 2.6
 
×
 8)
2
Tape mechanism deck
1
Volume knob
2
Vol knob ring
4
Connector 
      (CN712)
Note: When attching the panel board,
          refer to "Service Note" on page 4. 
6
Panel board
3
5
Cut the seven melted-connection points with a cutting plier.
10
HCD-VX222
3-6. KEY BOARD
3-7. SUB TRANS BOARD, VIDEO OUT BOARD, BACK PANEL, POWER TRANSFORMER (TRANS BOARD)
Note: When attching the Key board,
          refer to "Service Note" on page 4. 
2
Key board
1
Cut the six melted-connection points with a cutting plier.
qf
Two screws
     (+BVTT 4
 
×
 6)
qa
Five screws
     (+BVTP 3
 
×
 10)
q;
Two screws
     (+BVTT 3
 
×
 6)
qs
1
Two screws
     (+BVTP 3
 
×
 10)
8
Screw (+BVTP 3
 
×
 10)
Back panel
qg
Two screws
     (+BVTT 4
 
×
 6)
qh
Power transformer
     (T911)
qd
Connector (CN915)
3
Connector (CN2) 
5
Connector
     (CN903)
4
Connector
     (CN901)
2
Cover (Duct)
9
Video out board
7
Sub trans
      board
Trans board
6
Two screws
     (+BVTP 3
 
×
 10)

Download Sony HCD-VX222 / MHC-VX222 Service Manual (Repair Manual)

Here you can view online and download Sony HCD-VX222 / MHC-VX222 Service Manual in PDF. HCD-VX222 / MHC-VX222 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HCD-VX222 / MHC-VX222 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.