Service Modes, Error Codes, and Fault Finding
EN 16
LGE PDP 2K6
5.
Line Open or Short with the Same Distance
This is an MCM of Control board defect. The MCM cannot be
replaced separately. So replace the Control board.
Figure 5-15 Evenly repeated lines
5.1.4
Bar Defect (Horizontal)
Most horizontal defects can be repaired. In case of adherence
between a part of the film and the rear panel electrode, or a
panel electrode open/short, replace the PDP panel.
Connector
If the connectors on the Y board and Z board are not plugged
in well, it can result in a horizontal bar, because the sustain
voltage cannot be supplied to the panel. So check the FPC
connectors and YSUS<->YDRV first.
.
Figure 5-16 Check FPC connectors
Figure 5-17 Check drive connectors
Scan IC Check
Check the diode value of the right side part of the output pin.
Figure 5-18 Scan IC output diode check
5.1.5
Line Defect (Horizontal)
FPC Check
In case of one or more horizontal lines, this is probably due to
FPC or panel inside the Control board. Y board is just normal.
Figure 5-19 Open FPC electrode / Panel electrode breakdown
G_16
3
90_064.ep
s
1
8
0
8
06
MCM of CTRL
b
o
a
rd defect.
MCM c
a
n not
b
e repl
a
ced
s
ep
a
r
a
tely.
S
o repl
a
ce the CTRL
b
o
a
rd.
MCM (M
u
lti Chip Mod
u
le)
Horizontal bar
Disconnected
F_15590_085.eps
060705
Disconnected
Screen off
F_15590_086.eps
060705
Normal diode value= 0.6 (forward)
F_15590_087.eps
060705
Normal diode value= OL (reverse)
Horizontal 1 line.
FPC electrode open
F_15590_089.eps
070705
Panel electrode
Insulation break down
