Sanyo P50842-00 Troubleshooting Manual page 4

Repair Flow Chart:Trouble Condition
Green Power LED does not turn on. The TV is dead.
(TABLE *1.0)Analog board:5VSTB Test Points
50" Models
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
(TABLE *2.0) Power board:5VSTB Test Points
50" Models
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
(TABLE *3.0)Digital board:5V_STBY
50" Models
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Green Power LED:
Does not turn ON.
The TV is dead.
For analog signal board:
No:0v
Is the "5VSTB" working normally?
(see TABLE*1.0)
Yes:5v
Is the "5VSTB" working normally?
Unplug(K1005) and(K5A) connector
between digital unit and analog unit
Is the "5V_STBY" working normally?
For digital signal board:
No:0v
Is the "5V_STBY" voltage on
"K5A Pin8"?
Yes:5v
While pushing the "power"key No voltage(0v)at K5A Pin18 or 2.9v always present.
is the 2.9V from "key circuit"
supplied to "K5A Pin18"?
Yes
Digital board can not work.
Replace "digital board".
5VSTB on analog board
Analog K8B Pin3
5VSTB on power board
Power CN2 Pin3
5V_STBY on analog board
Analog board K1005 Pin8
Unplug(CN2) connector on No:0v
Power board can not work.
Power board. On Power board:
Replace "Power board".
(see TABLE*2.0)
Yes:5v
No:0v
Analog board can not work.
Replace "analog board".
(see TABLE*3.0)
Yes:5v
Replace "digital board".
Analog board can not work.
Replace "analog board".
Analog board was broken.
Replace "analog board".
Confirmation Voltage
5V
Confirmation Voltage
5V
Confirmation Voltage
5V
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