Service manual

10 PDP 40” - SERVICING
SERVICING
ADJUSTMENT INSTRUCTIONS
PRECAUTIONS
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 instruments.
Adjustments must be done in the correct order. They
must be performed in the at a temperature of 25±5°C
and 65±10% of relative humidity. The input voltage of
the receiver must keep 220/230V, 50/60Hz in adjusting.
and the receiver must be operated for about 15 minutes
prior to the adjustment.
After receiving 100% white pattern, the receiver must
be operated prior to adjustment (Or white condition in
HEATRUN mode). Then enter into HEAT-RUN mode and
select the HEAT-RUN OFF by pressing ADJ 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). 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 - A still screen for more than 20 minutes may cause
an aftter image in the black level part of the screen.
VOLTAGE ADJUSTMENT
Test Equipment: D.M.M 1EA
Va Adjusment(Address Voltage Adjusment)
1. Connect pin 1 of P806 or P811 to (+) jack of D.M.M.
2. After turning the VR803(Va Adj), voltage of D.M.M
adjustment as same as Va voltage which on label of
panel right/bottom.(Deviation : ±0.5V)
Vs Adjustment
1. Connect pin 9 of P803 to (+) jack of D.M.M.
2. After turning the VR804(Vs Adj), voltage of D.M.M
adjust as same as Vs voltage which indicated on
label of panel right/bottom.(Deviation : ±0.5V)
VSC Adjustment
1. Connect pin 4 of P802 to (+) jack of D.M.M.
2. After turning the VR806(VSC Adj), voltage of D.M.M
adjust as same as Vs voltage which indicated on
label of panel right/bottom.(Deviation : ±0.5V)
VSETUP Adjustment
1. Connect pin 1 of P802 to (+) jack of D.M.M.
2. After turning the VR805(VSETUP Adj),voltage of
D.M.M adjust as same as Vs voltage which indicated
on label.
ADJUSTMENT OF RGB CUT OFF
1. Select A/C SRT (cut-off automatic adjustment ) by
pressing SVC button on Remote Control for
adjustment.
2. Press the VOL + or VOL - button.
3. It displayed all of the black on the screen and then
adjustment is started.
4. If adjustment is finished, exit from adjustment mode
by pressing A/V button.
White Balance should be done after RGB cut-off become
adjustment. Operate the Zero-calibration of the CA-100,
then stick sensor to PDP module surface when you adjust.
1. Select WHITE PATTERN of HEAT RUN mode by press-
ing SVC button on Remote Control for adjustment
then operate HEAT RUN more than 15 minute.
2. Supply window Signal in pattern generater. [ When
adjustment is operated manually, operate process
(3) or (6) regular sequence, when adjustment is
operated automatically operate process (1)~(2).
3. To adjust Low Light, stick sensor to pattern(Dark),
select the R cut/B cuby pressing SVC button on
Remote Control for adjustment and adjust it until
color coordination becomes X=0.280±0.003,
Y=0.310±0.003 and color temperature becomes
8.800cK ± 500cK by pressing VOL+, - button. (G-
cut fixation) (4) To adjust High Light, stick sensor
to pattern(White). Select the R Gain/G
Gain(adjustment 6) by pressing SVC button on Re-
mote Control for adjustment and adjust R Gain/G
Gain until color coordination becomes
X=0.280±0.003, Y=0.310±0.003 and color tempera-
ture becomes 8.800cK ± 500cK.(B-Gain fixation)
5. Confirm the result of the High Light adjustment. If
the deviation of High Light occur, operate the ad-
justment of Low Light and High Light again.
6. Exit adjustment mode using AV button.
COLOR TEMPERATURE ADJUSTMENT
Required Equipment: Color Analyzer(CA-110, CA-100 or
same production).
Connection diagram of equipment for measuring
1. To adjust the deviation of the STB signal output.
2. Use regular PDP Monitor(JIG).
Adjustment Method
1. Connect the STB to regular PDP Monitor. Operate
the zero-calibration of the CA-100, then stick sen-
sor to surface of PDP module when you adjust.
2. Select ITE PATTERN of HEAT RUN mode by pressing
SVC button on Remote Control for adjustment, then
operate HEAT RUN more than 15 minute. (Operate
the HEAT RUN to adjust the STB at first, then if OFF
hour don’t keep more than 3 minutes, operate next
adjustment of the STB without HEAT RUN.)