Sony MHC-V21D Service Manual page 6

MHC-V21/V21D
Ver. 1.1
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
LOADING COMPLETE ASSY (T).
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)
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
It can release the lock function in the following procedure.
Releasing Procedure:
1. Press [ ] button to turn the power on.
1
2. Press [FUNCTION] button until the message "DVD/CD" is
displayed.
3. Press [ TUNING - .] and [B] buttons 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 disc tray lock is not released by
turning power on/off with the
6
[ ]
button.
1
If "PROTECTX" (X is a number)
and "CHECK MANUAL" fl ashes
on the display
Immediately unplug the AC
power cord (mains lead), and
check if anything is blocking the
ventilation openings of the unit.
After you have checked and
found no problems, reconnect
the AC power cord (mains lead),
and turn on the system. If the
issue persists, contact your
nearest Sony dealer.
Protect Type Description:
X (Error Code)
2 Defect of thermistor IC or charging circuit
used by SPM (Sound Pressure Management)
system.
3 There is possibility of over current happen at
speaker output.
or
Unusual heat up of AMP IC by improper as-
sembly of heat sink.
DC appears in SP terminal by defect of AMP
4
IC.
Description
SYS SET