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Service Modes, Error Codes, and Fault Finding
EN 18 FHP PDP5.
Figure 5-9 Vertical line / vertical bar problem analysis procedure (1/3)
"Vertical line/Vertical bar" problem analysis procedure
One vertical line?
Any
changes?
ADM flexible cable has
abnormal appearance?
ADM is defective
(PDP is defective)
Signal cable is
defective
Y
Heat-melted junction is defective
(PDP is defective)
Y
N
N
Panel address has open circuit or
ADM IC chip is defective
(PDP is defective)
Replace defective parts
Y
Y
N
N
Vertical line / Vertical bar
Tap lightly heat seal portion on
ADM flexible cable
–
LOGIC board ABUS-R/L
board signal cable has
abnormal appearance?
(1)
Logic board is defective,
or ABUS-R board is defective,
or Signal cable is defective,
or loose contact of
CN02 (LOGIC) or CN41(ABUS-R)
Left half of the
panel does
not light?
Y
N
Va (63V) exists on
RL41(resistor) on
ABUS-L board?
Y
N
N
Y
Logic board is defective,
or ABUS-L board is defective,
or Signal cable is defective,
or loose contact of
CN03 (LOGIC) or CN51 (ABUS-L)
Right half of the
panel does
not light?
Power cable (CN52 to CN47) is defective
or loose contact of CN47 (ABUS-R)
G_16400_030.eps
310706
*
1
When turning “ON” the PDP with PDP-go, refer to following procedure:
1. Connect the special LVDS cable (see paragraph “Repair Tools”)
2. Supply power to the PSU
between CN01 and CN06
Give the “PDP-go” signal (*1)