Read LG 42PC5D-DB (CHASSIS:PT-73A) Service Manual online
- 5 -
4. POWER PCB Assy Voltage
Adjustment
(Va, Vs voltage adjustment)
4-1. Test equipment:
D.M.M 1EA
4-2. Connection Diagram for Measuring
Refer to fig. 4
4-3. 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 P807, connect -
2) Connect + terminal of D. M..M. to Va pin of P807, connect -
terminal to GND pin of P807.
3) After turning RV501,voltage of D.M.M adjustment as same as
Va voltage which on label of panel right/top (deviation; ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D. M..M. to Vs pin of P807, connect -
terminal to GND pin of P807.
2) After turning RV 401, voltage of D.M.M adjustment as same as
Vs voltage which on label of panel right/top (deviation; ±0.5V)
5. EDID(The Extended Display
Identification Data) / DDC(Display
Data Channel) Download
Data Channel) Download
5-1. Required Test Equipment
(1) Adjusting PC with S/W for writing EDID Data(S/W: EDID
TESTER Ver.2.5)
(2) A Jig for EDID Download
(3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
(3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
15Pin cable, DVI to HDMI cable.
5-2. Setting of Device
5-3. Preparation for Adjustment
(1) As above <Fig. 5>, Connect the Set, EDID Download Jig,,
PC & Cable
(2) Turn on the PC & EDID Download Jig. And Execute the
S/W : EDID TESTER Ver.2.5
(3) Set up the S/W option
Repeat Number : 5
Device Address : A0
Device Address : A0
PageByte : 8
(4) Power on the Set
<Fig. 5> Connection Diagram of DDC Download
<Fig. 4-1> 42 inch: 6709900019A
<Fig. 4-2> 42 inch: EAY32808901
<Fig. 4-3> 50 inch: 6709900020A
Connection Diagram of Power Adjustment for Measuring
Caution: Each PCB assembly must be checked by check JIG
set. (Because power PCB Assembly damages to PDP Module,
especially be careful)
set. (Because power PCB Assembly damages to PDP Module,
especially be careful)
Click on the first or last page to see other 42PC5D-DB (CHASSIS:PT-73A) service manuals if exist.