Sylvania 6842PE M, Service Manual, Page: 76 / 82

2-2-1
PDMTR
TROUBLESHOOTING
CN8002 5pin +125V~+155V
CN8002 8,9pin +160V~+185V
CN8003 9,10pin +160V~+185V
CN8003 4pin -55V~-80V
CN8005 1,2pin +65V~+80V
CN8006 1,2pin +65V~+80V
CN9001 1,2pin +3V~+5V
CN9003 1,2pin +6V~+7V
CN9003 5pin +33V
CN9003 8,9pin +18V~+24V
Below are charts for troubleshooting, even under the condition that both the Digital CBA and
the Analog CBA are normal, when there is a malfunction in the plasma display module.
The power cannot be turned on. (SMPS unit)
The power cannot be turned on. (Video SMPS unit)
FLOW CHART NO.1
FLOW CHART NO.2
Is AC120V voltage supplied to Pin(1,3) of CN8001?
Check CN8001, cables and fuses on Filter CBA.
Repair them if any malfunction are found.
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Is the fuse (F8001~F8005) normal?
Is the fuse (F9001, F9002) normal?
Replace the SMPS unit.
Replace the SMPS unit.
Replace the SMPS unit.
Replace the Video SMPS unit.
Replace the Video SMPS unit.
Does the Relay (RLY8001, RLY8002) operate normally?
And do LED8001 and LED8002 light up when operating?
Does LED8002 go out?
Once turn the power off, then turn on again after
LED8004 goes out.
Check that 9 Pin of CN8008 is in level "H".
Refer to "FLOW CHART NO.3 " No picture
on the screen or is not displayed normally.
(SMPS unit is normal)"
Refer to "FLOW CHART NO.3 " No picture on the screen
or is not displayed normally. (SMPS unit is normal)"
Refer to "FLOW CHART NO.3 " No picture on the screen
or is not displayed normally. (SMPS unit is normal)"
Once turn the power off, then remove CN8002, CN8003,
CN8005 and CN8006.
Turn the power on. Check that the specific voltage is
output to the following terminals.
Remove CN8002, CN8003, CN8005 and CN8006,
then turn the power on. Check that the specific
voltage is output to the following terminals.