ATEC-PANDA 2188 - 6.5 CPU non-operating

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6.5 CPU non-operating
6.6 Cannot save channels
Y
Y
Y
N
N
N
N
Check voltage at N101/PIN(42)
(
STANDBY
)
=5V
Check voltage at
N101/PIN(16) (X-RAY)
=0 V
Check V604
When restart TV,
check voltage on
negative pole
VD2002=9.4 V
Check
C511
C512
Check
protection
circuit of
V605 and
VD2001
Check voltage at
N101/PIN(12)
=5V
Check voltage at
N101/PIN(17 )(RESET)
=5V
Check 15V~CPU
5V Supply
Check V102
RESET circuit
Check oscillating
waveform at
N101/PIN(10)/PIN(11)
Check functional
inching key of the TV
whether pressed
Manual RESET
Check crystal oscillator
and external elements
Check N101
Y
Y
Y
Y
Y
Y
N
N
>10V
Y
N
N
N
N
N
When searching automatically channels,
observe whether can dis
p
la
y
p
icture
Check BT voltage of
TUNER=30 V
Check SD voltage
variation at
CPU/PIN(33)
Check AFT voltage
variation at
CPU/PIN(15)
Check voltage
variation at
N201/PIN(22)
Check TUNER
Check 33 V of
voltage
Check R104 and VD101