Sanyo PLC-XF30 - Page 25

-33-
10us/Div
Waveforms
NTSC
0.5V/Div
TP_32H1
H_sync 2V/Div
TP_5101
C 0.5V/Div
TP_5102
Y 0.5V/Div
TP_3141
C 0.5V/Div
TP_3142
Y 0.5V/Div
TP_5181
Red 0.5V/Div
TP_5182
Green 0.5V/Div
TP_5183
Blue 0.5V/Div
TP_201
0.5V/Div
TP_211
0.5V/Div
TP_221
0.5V/Div
TP_2301R
0.5V/p_p
TP_2301G
0.5V/p_p
TP_2301B
0.5V/p_p
TP_820R
0.5V/Div
TP_820G
0.5V/Div
TP_820B
0.5V/Div
Timing chart
Terminal board-AV Video-in
-32-
Check the fan control circuit
FAN DRIVE
OUTPUT
VOLTAGE
CONTROL
SIGNAL
BUFFER
●
●
●
VOLTA GE CONTROL OUT
TEMPERATURE ABNORMALITY -2
Troubleshooting
FAN
ON/OFF
SIGNAL
From pin4 of IC6611
H : ON L : OFF
From IC6611
CHECK !
CHECK !
CHECK !
CHECK !