18
MHC-V02
MOTHERBOARD Mount
Ampli
fi
er Diagnosis Flow
“PROTECTX” is displayed after turning the power on
“PROTECT 1, 3, 4 & 8” is displayed
on the screen display panel after
turning the power on.
Replace the MOTHERBOARD
mounted pc board.
“PROTECT 2 & 7” is
displayed.
“PROTECT 2 & 7” is not
displayed, when removing
the speaker and turning
the power on.
Check and replace the
speaker.
“PROTECT 5 & 6” is
displayed.
Replace the MOTHERBOARD
mounted pc board.
“PROTECT 5 & 6” is displayed, when:
1. Ventilation hole is blocked
2. Thermal sheet is broken
3. Heat sink (MB) is missing
Check and perform below:
1. Remove any obstacle from
ventilation
hole
2. Replace thermal sheet
3. Reinstall heat sink (MB)
Replace the MOTHERBOARD
mounted pc board.
Replace the MOTHERBOARD
mounted pc board.
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
SYS SET
2019/02/28 22:48:45 (GMT+09:00)
