LG MT-42PZ10, Service Manual

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1. Application Object
These instructions are applied to all of the PDP monitor, MP-
00MC.
2. Notes
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
20±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver must keep 220/230V,
50/60Hz in adjusting.
(5) The receiver must be operated for about 15 minutes prior
to the adjustment.
1) After receiving 100% white pattern, the receiver must be
operate prior to adjustment.(Or white condition in HEAT-
RUN mode)
2) Enter into HEAT-RUN mode
- Select the HEAT-RUN OFF by pressing SVC button
on Remote Control for adjustment.
- Press the VOL + button in HEAT-RUN OFF.
(OSD display HEAT-RUN WHITE and screen display
100% full WHITE PATTERN)
3) Set is activated HEAT-RUN without SET TOP BOX or
signal generator in this mode.
[
Single color pattern of HEAT-RUN mode uses to check
PANEL.(RED/BLUE/GREEN)
[Caution] If you turn on a still screen more than 20 minutes, a
afterinage may be occur in the black level part of the
screen.
3. POWER PCB Assy Voltage Adjustment
[
Replace PDP Module or Power Board, adjust certainly Power
PCB Assy Voltage.
3-1. Test Equipment
D.M.M 1EA
3-2. Connection Diagram for Measuring
Refer to Fig 1.
3-3. Adjustment Method
(1) Va Adjusment(Address Voltage Adjusment)
1) Connect pin 1 of P806 or P811 to (+) jack of D.M.M.
2) After turning the VR351(Va Adj), voltage of D.M.M
adjustment as same as Va voltage which on label of
panel right/bottom.(Deviation : ±0.5V)
(2) Vs Adjustment
1) Connect pin 9 of P803 to (+) jack of D.M.M.
2) After turning the VR551(Vs Adj), voltage of D.M.M adjust
as same as Vs voltage which indicated on label of panel
right/bottom.(Deviation : ±0.5V)
(3) VSC Adjustment
1) Connect pin 4 of P802 to (+) jack of D.M.M.
2) After turning the VR751(VSC Adj), voltage of D.M.M
adjust as same as Vs voltage which indicated on label
of panel right/bottom.(Deviation : ±0.5V)
(4) VSETUP Adjustment
1) Connect pin 1 of P802 to (+) jack of D.M.M.
2) After turning the VR651(VSETUP Adj),voltage of D.M.M
adjust as same as Vs voltage which indicated on label
of panel right/bottom.(Deviation : ±0.5V)
4. Adjustment of RGB Cut-off and
White Balance
4-1. Required Equipment
Color analyzer(CA-100 or same production)
4-2. Connection Diagram of Equipment for
Measuring
ADJUSTMENT INSTRUCTIONS
V
y
VR551
VR651
VR751
DMM
V
SET UP
V
A
V
A
V
S
CTL
V
A
CTL
VR351
GND
V
SETUP
CTL
V
y
CTL
V
S
<Fig 1> Connection Diagram of Power Adjustment for Measuring
Refer to Typical Voltage
Va
Vs
Vy
Vsetup
55 ~ 75V
170 ~ 195V
-70 ~ -100V
240 ~ 290V
COLOR
ANALYZER
TYPE; CA-100
Window Pattern
CVBS Signal Input
High Light
90
±
5cd/m2
Low Light
6
±
1cd/m2
PDP MONITOR
MSPG-2100 or
MSTG-5200
<Fig 2> Connection Diagram of Automatic Adjustment