Read LG 32PC50-ZB (CHASSIS:PP78C) Service Manual online
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* Refer to the below case to know what value is fixed.
* CASE
- First adjust the coordinate much away from the target
value(x, y).
1) x, y > target
(1) Decrease the R, G.
2) x, y < target
(1) First decrease the B gain.
(2) Decrease the one of the others.
(2) Decrease the one of the others.
- In case of decreasing the x, decreasing the R : fix G
- In case of decreasing the y , decreasing the G : fix R
- In case of decreasing the y , decreasing the G : fix R
3) x > target , y < target
(1) First decrease B, so make y a little more than the
target.
(2) Adjust x value by decreasing the R.
4) x < target , y > target
(1) First decrease B, so make x a little more than the
target.
(2) Adjust x value by decreasing the G.
(7) When adjustment is completed, Exit adjustment mode
using EXIT key on R/C.
10. Default Value in Adjustment mode
(Default values maybe modified the module condition)
10-1. White Balance
12. Sound spec.
13. POWER PCB Assy Voltage
Adjustments
(Va, Vs Voltage adjustments)
13-1. Profile
: To supply the Va, Vs voltage that the module want.
13-2. Required Test Equipment
(1) Stick for adjustment.
(2) DMM.
(2) DMM.
13-3. Connection Diagram for Measuring
: refer to (Fig. 1)
13-4. Adjustment Method
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D. M..M. to Va pin of P812, connect
2) Connect + terminal of D. M..M. to Va pin of P812, connect
-terminal to GND pin of P812.
3) After turning VR901,voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(deviation;
(deviation;
±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D. M..M. to Vs pin of P812, connect
-terminal to GND pin of P812.
2) After turning VR851, voltage of D.M.M adjustment as
same as Vs voltage which on label of panel right/top.
(deviation ;
(deviation ;
±0.5V)
14. Input the Shipping Option Data
(1) Push the ADJ key in a Adjust Remote control.
(2) Input the Option Number that was specified in the BOM,
(2) Input the Option Number that was specified in the BOM,
into the Shipping area.
(3) The work is finished, Push
A
Key.
Item
Dielectric Voltage (AC <-> FG)
Dielectric Voltage (Without FG)
Value
1.5
1.5
3
3
Unit
kV
kV
Remark
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
Item
Min
Typ
Max
Unit
Remark
Audio Practical Max Output, L(Mono)/R
9
10
12
W
<Default Value on OSD>
Color Coordinate
x
y
0.283±0.003
0.295±0.003
0.329±0.003
11,000K
9,300K
6,500K
0.000
0.000
0.003
0.276±0.003
0.283±0.003
0.313±0.003
COOL
MEDIUM
WARM
Mode
Temp
uv
(Fig. 1) Connection Diagram of power adjustment for measuring.
Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module,
especially be careful)
(Because power PCB Assembly damages to PDP Module,
especially be careful)
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