Philips FPF42C128135UA-52 Service Manual page 18

EN 18 5. FHP PDP
"Vertical line/Vertical bar" problem analysis procedure
Vertical line / Vertical bar
LOGIC board
board signal cable has
abnormal appearance?
ADM flexible cable has
abnormal appearance?
Give the "PDP-go" signal (*1)
One vertical line?
Left half of the
Right half of the
Service Modes, Error Codes, and Fault Finding
–
ABUS-R/L
N
N
Y
N
Y
panel does
not light?
N
Y
panel does
not light?
Va (63V) exists on
N RL41(resistor) on
ABUS-L board?
(1)
Figure 5-9 Vertical line / vertical bar problem analysis procedure (1/3)
Y
Y
* 1 When turning "ON" the PDP with PDP-go, refer to following procedure:
1. Connect the special LVDS cable (see paragraph "Repair Tools")
between CN01 and CN06
2. Supply power to the PSU
Tap lightly heat seal portion on
ADM flexible cable
Y
Any
Heat-melted junction is defective
changes?
N
Panel address has open circuit or
or ABUS-R board is defective,
or Signal cable is defective,
CN02 (LOGIC) or CN41(ABUS-R)
Logic board is defective,
or ABUS-L board is defective,
Y
or Signal cable is defective,
CN03 (LOGIC) or CN51 (ABUS-L)
N
Power cable (CN52 to CN47) is defective
or loose contact of CN47 (ABUS-R)
Signal cable is
defective
ADM is defective
(PDP is defective)
(PDP is defective)
ADM IC chip is defective
(PDP is defective)
Logic board is defective,
or loose contact of
or loose contact of
Replace defective parts
G_16400_030.eps
310706