Philips S37SD-YD02 Service Manual page 36

EN 36 5. SDI PDP
1
Logic-Main
Observation of
abnormal Display
Regular abnormal
pattern
Yes
Replace the Logic-
main board
Service Modes, Error Codes, and Fault Finding
Abnormal Display
Exept for Horizontal or Vertical Lines
Check FFC
(Flat Foil Cables) between
Logic-main, X-main and Y-main
2
Y-Main Check
Check Fuses and FET
No
Logic main
waveform on Y-board
normal state
Replace PDP
Not
correct
Check voltages.
Adjust Y waveform
Go to X-Main board
Not
correct
Check supply voltages or
replace X-Main board.
Figure 5-14 Fault symptom: "Abnormal Display"
Check Ramp
(buffer)
Waveform?
No
waveform
Waveform is
OK
Check voltages.
Replace Y-Main
board
Check
Waveform is
OK
X main board seems to be OK.
Replace PDP
3
X-Main Check
Check Fuses and FET
Check X
Waveform
Waveform?
Waveform not
OK
Replace X-Main
board