27
MHC-V21/V21D
Ver. 1.1
MOTHERBOARD Board Mount
Ampli
fi
er Diagnosis Flow (1/3)
1. “PROTECT3” is displayed after turning the power on
“P
ROT
ECT
3”
is di
splayed on t
he
s
creen di
splay panel
aft
er t
urning
the
pow
er on.
“PR
O
TE
C
T3
” is
n
ot
d
isp
la
ye
d, w
he
n r
em
ov
in
g th
e
sp
ea
ke
r connector (CN2021) a
nd
turni
ng t
he pow
er
on.
Check that IC2002 pin 27, 32, 35 and 39 is short to GND.
Check and replace the speaker.
Exchange IC2002.
MOTHERBOARD board
da
m
aged.
E
xc
hange t
he
c
om
pl
et
e MOTHERBOARD
board.
Yes
No
No
Yes
Yes
SYS SET
2018/08/28 21:56:45 (GMT+09:00)