Sony MHC-V44D Service Manual page 5

Note
• JIG
When disassembling the set, use the following jig (for front
panel removal).
Part No.: J-2501-238-A JIG FOR SPEAKER REMOVAL
NOTE OF REPLACEMENT OF THE MS-476 BOARD
When the MS-476 board is defective, exchange the entire CDM90
ASSY.
TEST DISCS
Use following TEST DISC when this unit confi rms the operation
and checks it.
• For CD
Part No. Description
3-702-101-01 DISC (YEDS-18), TEST
4-225-203-01 DISC (PATD-012), TEST
J-2501-307-A DISC (HLX-A1), TEST
• For DVD SL (Single Layer)
Part No. Description
J-6090-069-A DISC (HLX-503), TEST (NTSC)
J-6090-088-A DISC (HLX-504), TEST (NTSC)
J-2501-305-A DISC (HLX-513), TEST (NTSC)
J-6090-077-A DISC (HLX-506), TEST (PAL)
• For DVD DL (Double Layer)
Part No. Description
J-6090-071-A DISC (HLX-501), TEST (NTSC)
J-6090-089-A DISC (HLX-505), TEST (NTSC)
J-2501-306-A DISC (HLX-514), TEST (NTSC)
J-6090-078-A DISC (HLX-507), TEST (PAL)
IF "PROTECTX" (X IS A NUMBER)
APPEARS IN THE DISPLAY PANEL
Immediately unplug the AC
power cord (mains lead), and
check the following items.
• Is anything blocking the
ventilation holes of the unit?
• Is the USB port short-circuited?
After checking the above items and
fi xing any problems, plug in the AC
power cord (mains lead) again and
turn on the system.
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure:
1. Press [ 1 ] button to turn the power on.
2. Press the [FUNCTION] button until the message "DVD/CD"
is displayed.
3. Press the [ENTER] button and [VOCAL FADER] button
simultaneously and hold down for around 3 seconds.
4. The message "UNLOCKED" is displayed and the disc tray is
unlocked.
" "
Note: When
LOCKED is displayed, the slot lock is not released by
turning power on/off with the
NOTE OF REPLACING THE IC2002 AND IC2003 ON
THE DAMP BOARD AND THE COMPLETE DAMP
BOARD
When IC2002 and IC2003 on the DAMP board and the complete
DAMP board are replaced, it is necessary to spread the compound
between parts and heat sink.
Part No. Description
7-300-009-67 THERMAL COMPOUND (TIG2000)
Spread the compound referring to the fi gure below.
– DAMP Board (Component Side) –
thermal compound (TIG2000)
thermal compound (TIG2000)
MHC-V44D
[ ]
1 button.
IC2003
IC2002
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