Set Assembly Adjustment Method; Edid; Power Pcb Assembly Voltage Adjustment; Va Adjustment - LG 42PM4700 Service Manual

3.4. EDID

(The Extended Display Identification Data)
■ RGB [C/S: 58] : For HD Models
EDID Block 0, Bytes 0-127 [00H-7FH]
Block Type: EDID 1.3
■ HDMI [C/S: 3F A6] : For HD Models
Block Type: EDID 1.3
EDID Block 1, Bytes 128-255 [80H-FFH]
Block Type: CEA EDID Timing Extension Version 3
* CheckSum & Physical Address Table.
- Each HDMI Input has their own physical address(on
Address:9E). So, each HDMI Input has different C/S
value.
■ HDMI INPUT Physical Address Table
Address HDMI1
9E 10
■ HDMI INPUT C/S Table.
- HD
HDMI1
CheckSum 3FA6
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
HDMI2 HDMI3 HDMI4
20 30
HDMI2 HDMI3 HDMI4
3F96 3F86 3F76

4. SET assembly adjustment method

* Caution: Each PCB assembly must be checked by check
JIG set. (Because power PCB Assembly damages
to PDP Module, especially be careful)

4.1. POWER PCB Assembly Voltage adjustment

(Va, Vs voltage adjustment)
Test equipment : D.M.M 1EA
Connection Diagram for Measuring : refer to fig.4
Adjustment method

4.1.1. Va adjustment

(1) Connect + terminal of D. M.M. to Va pin of P811, connect
-terminal to GND pin of P811.
(2) After turning VR502,voltage of D.M.M adjustment as same
as Va voltage which on label of panel right/top (deviation;
±0.5V)
4.1.2. Vs adjustment
(1) Connect + terminal of D. M..M. to Vs pin of P811, connect
-terminal to GND pin of P811.
(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)
4.2. Adjustment of White Balance
- Required Equipment
● Remote controller for adjustment
● Color Analyzer ( CS-1000, CA-210 or same product
: CH 10 (PDP)
* Please adjust CA-210 by CS-1000 before measuring
● Auto W/B adjustment instrument(only for Auto
adjustment)
● 9 Pin D-Sub Jack(RS232C) is connected to the AUTO
W/B EQUIPMENT
Before Adjust of White Balance, Please press
POWER ONLY key
- Adjust Process will start by execute RS232C Command.
● Color temperature standards according to CSM and Module
● CS-1000/CA-100+/CA-210(CH 10) White balance adjust-
ment coordinates and color temperature.
40
CSM Color Coordination
COOL 0.276
MEDIUM 0.285
WARM 0.313
- 7 -
CSM PLASMA
Cool 11000K
Medium 9300K
Warm 6500K
Temp
x y
0.283 11000K
0.293 9300K
0.329 6500K
LGE Internal Use Only
± Color
Coordination
0.002
0.002
0.002