Philips S42SD-YD09 Service Manual page 37

Service Modes, Error Codes, and Fault Finding
[Logic Main]
LED 2000 Blinks
(Motion of Vsync)
Regular
Abnormal
Replace
board
Figure 5-28 Fault symptom: "Abnormal Display" 42" SD v5 2/2
Check
F5001 for Vdd (5V)
F5004 for Vcc (15V)
F5003 for Vs(200V)
Check
Q5009 ~ Q5021
Check
F4004 for Vdd (5V)
F4001 for Vcc (15V)
F4002 for Vs(200V)
Check
Q4002,3
Q4011 ~ Q4016
Logic main
Normal State
G_16380_135.eps
Y-main
OPEN
Fuse
Replace Y-Board
SHORT
SHORT
FET,IGBT
Replace Y-Board
OPEN
X-main
OPEN
Fuse
Replace X-Board
SHORT
SHORT
FET,IGBT
Replace X-Board
OPEN
SHORT
Y-BUFFER
Replace Y-BUFFER
OPEN
SDI PDP 5.
190606
G_16380_133.eps
190606
EN 37