Polaroid series, Руководство по обслуживанию

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8.2 Troubleshooting Flow Chart
3~5V
Is the Voltage at
I029#8= 5V
？
No
No
Replace I029
Yes
No
No picture
No picture
Erase
EEPROM
Picture
appears
Replace I012(MCU)
Fix at
factory
No picture
Yes
Restart and check
sources are
connected
Re-plug white connector,
then measure voltage
again
Check if inverter is
connected correctly.
Yes
No
Panel wire (P005) is
connected correctly?
Re-
plug
No
否
否
Yes
Yes
Yes
Does the LED
light up
？
Is LED display
Amber
？
Restart signal to
ensure H. V.
sync are not
absent
End
Is
it entering into
power saving on PC
mode?
No
Picture
appears
Picture
appears
Replace Main Board
PWB-0812
No
No
No
Yes
Re-
plug
No picture
No picture
No picture
No picture
Re-
plug
No
Yes Yes
Picture
appears
No
Yes
No picture
No picture
Picture
appear
No picture
Replace Inverter,
test again.
Measure white connectors
of 2 sides pin voltage that
are at 3V and 24V
White connector of
power Module (8p
or 12p) is connected
correctly?
Check if panel
light works?
Re-
plug
No picture Appear
Measure of
I029#4 =? volt
0~0.5V
Picture
appears
Picture
appears
Picture
appears
Picture
appears
Replace Power
Module, test
again.
Erase
EEPROM
Picture
appears
（
1
）
Power Start NG
24