- 7 -
4-3. Confirmation
(1) We confirm whether “0xBF(480i)/0xC8(1080i)” address of
EEPROM “0xA2” is “0xAA” or not.
(2) If “0xBF(480i)/0xC8(1080i)” address of EEPROM “0xA2”
isn’t “0xAA”, we adjust once more
(3) We can confirm the ADC values from “0xB9 ~ 0xBE(480i) /
0xC2 ~ (1080i)” addresses in a page “0xA2”
[
Manual ADC Confirmation using Service Remocon. After enter
Service Mode by pushing “INSTART” key.
Caution: Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP
Module, especially be careful)
Caution: Set up “RF mode(noise)” before voltage adjustment.
5. POWER PCB Ass’y Voltage
Adjustment
(Va, Vs voltage Adjustment)
5-1. Test Equipment:
D.M.M 1EA
5-2. Connection Diagram for Measuring
Refer to Fig.1, Fig 2, Fig 3
5-3. Adjustment Method
(1) 50” Va Adjustment (refer fig.1)
1) After receiving 100% Full White Pattern, HEAT RUN.
2) C terminal of D.M.M. to Va pin of P802,
connect-terminal to GND pin of P802.
3) After turning VR902,voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top
(deviation; ±0.5V)
(2) 50” Vs Adjustment (refer fig.1)
1) C terminal of D.M.M. to Vs pin of P802, connect
-terminal to GND pin of P802.
2) After turning VR901, voltage of D.M.M adjustment as
same as Vs voltage which on label of panel right/top
(deviation ; ±0.5V)
(3) 42” Va Adjustment (refer fig.2)
1) After receiving 100% Full White Pattern, HEAT RUN.
2) C terminal of D.M.M. to Va pin of P811, connect
-terminal to GND pin of P811.
3) After turning VR901,voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top
(deviation; ±0.5V)
(4) 42” Vs Adjustment (refer fig.2)
1) C terminal of D. M..M. to Vs pin of P811,
connect -terminal to GND pin of P811.
2) After turning VR951, voltage of D.M.M adjustment as
same as Vs voltage which on label of panel right/top
(deviation ; ±0.5V)
Copyright©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ADJUSTMENT INSTRUCTIONS
(Fig. 1) 50inch Power PCB Assy Voltage Adjustment
(Fig. 2) 42inch Power PCB Assy Voltage Adjustment
