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28
MHC-V21/V21D
Ver. 1.1
MOTHERBOARD Board Mount
Ampli
fi
er Diagnosis Flow (2/3)
2. The sound is not outputted
Check that the signal is input to IC2001 pin 24 and 25.
Check that the PWM signal is outputted from IC2001 pin 38, 39, 40 and 41.
Check that the signal is outputted from IC2002 pin 35 (Right Channel Speaker),
pin 39 (Left Channel Speaker), and pin 27 and 32 (Subwoofer Speaker).
The s
ound
is not out
putt
ed.
MOTHERBOARD
board damaged. Exchange the complete MOTHERBOARD board.
MOTHERBOARD
board damaged. Exchange the complete MOTHERBOARD board.
Exchange IC2001.
Exchange IC2002.
Yes
Yes
Yes
Yes
No
No
No
SYS SET
2018/08/28 21:56:45 (GMT+09:00)