LG 50PC1RR Service Manual page 15

9. POWER PCB Assy Voltage
Adjustments
(Va, Vs Voltage adjustments)
9-1. Test Equipment :
9-2. Connection Diagram for Measuring
: refer to Fig.14
9-3. 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
-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)
(Fig. 14) Connection Diagram of power adjustment for measuring.
10. EDID (The Extended Display
Identification Data)/ DDC (Display
Data Channel) download
10-1. 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
15Pin cable, DVI to HDMI cable.
10-2. Setting of device
(Fig. 15) Connection Diagram of DDC download
All manuals and user guides at all-guides.com
D.M.M. 1EA
AC INPUT
10-3. Preparation for Adjustment
1) As above Fig. 6, 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 S/W option.
Repeat Number : 5
Device Address : A0
PageByte : 8
4) Power on the Set.
10-4. Sequence of Adjustment
(1) DDC data of Analog-RGB
1) Init the data.
2) Load the EDID data.(Open File).
[Analog(RGB) :
50PC1RR_RGB(3D)0307.ana] (VGA,XGA)
[Digital(HDMI):
50PC1RR_HDMI(6537)_0307.div] (XGA)
Open File
3) Set the S/W as below.
4) Push the "Write Data & Verify"button. And confirm "Yes".
5) If the writing is finished, you will see the "OK" message.
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