HCD-M40D/M60D/M80D
29
MOTHERBOARD Mount
Ampli
fi
er Diagnosis Flow (1/3)
1. “PROTECT3” is displayed after turning the power on
Check that IC3503 pin 27, 32, 35 and 39 is short to GND/PVDD (M60D/M80D).
“P
ROT
ECT
3”
is di
splayed on t
he
s
creen di
splay panel
aft
er t
urning
the
pow
er on.
“P
ROT
ECT
3”
is not dis
played,
w
hen rem
oving
the
speak
er
and t
urni
ng
the pow
er on.
Check that IC2002 pin 27, 32, 35 and 39 is short to GND/PVDD.
Check and replace the speaker.
Exchange IC2002.
Exchange IC3501.
Exchange IC3502.
Exchange IC3503.
MOTHERBOARD board
da
m
aged.
E
xc
hange t
he
c
om
pl
et
e MOTHERBOARD
board.
Check that IC3501 pin 27, 32, 35 and 39 is short to GND/PVDD (M80D).
Check that IC3502 pin 27, 32, 35 and 39 is short to GND/PVDD (M60D/M80D).
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
