DOWNLOAD Sony HCD-VX222 / MHC-VX222 Service Manual ↓ Size: 7.01 MB | Pages: 69 in PDF or view online for FREE

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

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

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)
11
HCD-VX222
3-8. MAIN BOARD, POWER AMP BOARD
3-9. VIDEO BOARD, BASE UNIT, BD BOARD
4
Three screws (+BVTT 3
 
×
 6)
6
Two screws (+BVTT 3
 
×
 6)
7
Heat sink
3
Two screws (+BVTP 3
 
×
 16)
1
Two screws (+BVTT 3
 
×
 6)
2
Main board
5
Power amp board
Main board
Base unit
qg
qd
Two screws (+PTPWH M2.6)
5
Screw (+PTPWH M2.6)
qf
Screw (DIA. 12)
qa
Two screws (+BVTP 2.6
 
×
 8)
q;
BD board
qh
Two insulators
6
Holder (BU) assy
qh
Two insulators
qs
Two stoppers (BU)
7
Wire (flat type)(CN101)
8
Wire (flat type)(CN102)
9
Screw (+BVTP 2.6
 
×
 8)
2
wire (flat type)
       (CN502)
1
wire (flat type)
       (CN502)
3
Screws
     (+BVTP 2.6
 
×
 8)
4
VIDEO board
12
HCD-VX222
3-10. DRIVER BOARD, MOTOR BOARD AND ADDRESS SENSOR BOARD
9
 Pull-out the disc tray.
4
Two
 screws (+BVTP 2.6 
×
 8)
q;
Screw (+PTPWH 2.6
 
×
 8)
qa
Tray
1
Screw (+BVTP 2.6
 
×
 8)
qs
Screw (+BVTP 2.6
 
×
 8)
6
Wire (flat type)(CN721)
3
Wire (flat type)
      (CN702)
8
Motor board
qd
Address sensor board
2
Driver board
5
Remove the two solderings of motor.
7
Connector (CN722)
13
HCD-VX222
SECTION 4
TEST MODE
[MC Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons x  ,  ENTER , and ?/1 simultaneously.
2. The fluorescent indicator tube displays “COLD RESET” and
the set is reset.
[CD Ship Mode]
• This mode moves the pickup to the position durable to vibra-
tion. Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press
1/u  button to turn the set ON.
2. Press  CD  button and
1/u button simultaneously  until
“STANDBY” appears.
3. When you releaset he buttons, a message “LOCK” is displayed
on the fluorescent indicator tube, and the CD ship mode is set.
[MC Hot Reset]
• This mode resets the set with the preset data kept stored in the
memory.  The hot reset mode functions same as if the power
cord is plugged in and out.
Procedure:
1. Press three buttons x ,  ENTER , and  DISPLAY simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[CD Service Mode]
• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons x ,  ENTER , and  OPEN/CLOSE  simul-
taneously.
4. The CD service mode is selected.
5. With the CD in stop status, continue to press  >  to move the
pickup to outside track, continue to press  .   to inside track.
6. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Press three buttons in the same manner as step 2.
Note: • Always move the pickup to most inside track when exiting from
this mode.  Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can be
chipped.
[Change-over of AM Tuner Step between 9 kHz and
10 kHz]
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “TUNER”, and press  TUNER/BAND
button to select the BAND “AM”.
3. Press ?/1 button to turn the set OFF.
4. Press  ENTER  and ?/1 buttons simultaneously, and the display
of  fluorescent indicator tube changes to “AM 9 k STEP” or
“AM 10 k STEP”, and thus the channel step is changed over.
[GC Test  Mode]
• This mode is used to check the software version, FL tube, LED,
keyboard, headphone and volume.
Procedure:
1. Press three buttons x ,  ENTER  and  DISC 2  simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When  ENTER  and  DISC2  are pressed at the same time, the
key number check mode starts up. In this mode, the key numbers
of each key series are displayed.
4. In the key check mode, the fluorescent indicator tube displays
“KEY 
000”.  Each time a button is pressed.
5. When  ENTER  and  DISC2  are pressed at the same time, the
key count check mode starts up. In this mode, the message “KEY
CNT @@” is displayed on the FL display tube. When each
button is pressed, the key row number is incremented first. Then
the key value is then incremented. However, one the button is
pressed, the key value cannot be counted.
6. When  ENTER  and  DISC2  are pressed at the same time, the
headphones check mode starts up. In this mode, the message
“H_P ON” is displayed when the headphones are inserted. When
the headphones are not inserted. the message “H_P OFF” is
displayed.
7. When  ENTER  and  DISC2  are pressed at the same time, the
volume check mode starts up. In this mode, the message
“VOLUME FLAT” is displayed on the FL display tube. When
the volume control knob is rotated in the positive (+) direction,
the message “VOLUME UP” is displayed. When the volume
control knob is rotated in the negative (-) direction, the message
“VOLUME DOWN” is displayed.
8. In order to quit the mode, either press  ENTER  and  DISC2  at
the same time or press the three buttons at the same time as in
step 1.
9. To exit from this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
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