LG 50PZ950-ZA (CHASSIS:PD12A) Service Manual ▷ View online
ⓒ LG Electronics. Inc.2010
Making
전자 - 6-2
Revision
PDP TV
Input
Block
Digital TV Video Problem
Check RF Cable
Y
Check TU1500 #3 for 5V, #13 for
1.25V, #14 for 3.3V and #16 for
2.5V
Check Voltage
5V : IC506 Output
3.3V : IC505 Output
2.5V : IC507 Output
1.25V:IC503 Output
2.5V : IC507 Output
1.25V:IC503 Output
Y
N
Check Video color
Check Monitor Out Video
(Scart out)
Check other input / OSD
Check IIC Line
Check SCL/SDA1 Line
N
Maybe Tuner has problems
: Replace Tuner
N
Y
Check TP Clock, Data, Sync
Replace Tuner
N
Y
N
Y
Check Module
N
Y
Change BCM(IC101)
ⓐ
Y
Go to ⓐ
A6-1
Repair Process-Reference data
A6
2010. 12 . 24
ⓒ LG Electronics. Inc.2010
< CVBS waveform – sample >
- Defend on the input signal.
Making
전자 - 6-2
Revision
PDP TV
Input
Block
Analog TV Video Problem
Check RF Cable
Check CVBS signal
TU1500 #11 Pin
Replace Tuner(TU1500)
Y
N
Check IC506 Output Voltage
Y
N
Y
Replace BCM(IC101)
Check 5V voltage
on TU1500(Pin3)
A6-2
Repair Process-Reference data
A6
2010. 12 . 24
ⓒ LG Electronics. Inc.2010
Making
전자 - 6-2
Revision
PDP TV
Input
Block
Component Video Problem
Check input signal format
Is it supported?
Check signal
on L800, 801, 802
Y
Check the damage of JK800
And Replace Connector
N
Y
Replace BCM(IC101)
Y
Check Component Cable
※ Measured signals depend on the input signal.
A6-3
Repair Process-Reference data
A6
2010. 12 . 24
ⓒ LG Electronics. Inc.2010
Making
전자 - 6-2
Revision
PDP TV
Input
Block
RGB(D-Sub) Video Problem
Check input signal format
Is it supported?
Check signal, Hsync, Vsync
R812, R813
Check IC801 Input/Output
Check signal
C320, C322, C327
Y
N
Check P801
Replace connector (P801).
Y
N
Y
Replace C320, C322, C327
N
Replace BCM(IC101)
Y
Check RGB Cable
conductors for damage
Y
※ Measured signals depend on the input signal.
A6-4
Repair Process-Reference data
A6
2010. 12 . 24
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