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CHAPTER 6.
LC-46LE925E
ADJUSTMENT
[1] ADJUSTMENT PROCEDURE
1. Adjustment method after PWB and/or IC replacement due to repair
The unit is set to the optimum at the time of shipment from the factory.
If any value should become improper or any adjustment is necessary due to the part replacement, make an adjustment according to the following pro-
cedure.
1. Procure the following units in order to replace the main unit
MAIN UNIT: DKEYDF655FM01
NOTE: [Caution when replacing ICs in the main unit (IC509, IC2002)]
The above ICs are EEPROMs storing the EDID data of PC, and Monitor microcomputer.
Before replacing the relevant part, procure the following parts in which the data have been rewritten.
IC509
IC2002
NOTE: [Caution when replacing ICs in the main unit (IC8401, IC3302)]
When replacing either IC8401 or IC3302, exchange MAIN units for DKEYDF655FM01
Each part should not be individually exchanged.
IC8401
IC3302
NOTE: HDMI ROM Writing
After replacing IC1504, execute "HDMI EDID WRITE" on the page 5/23
Please execute it after checking MODEL NAME & INCH SIZE. are correct.
IF MODEL NAME & INCH SIZE. are not correct, set them previously. (Refer to 2)
The ROM data based on information of MODEL NAME & INCH SIZE
1) Enter the process adjustment mode in TV.
2) Use the cursor keys ( / ) and CH keys (
2. After replacing the LCD panel or LCD control/MAIN UNIT, check MODEL NAME in the following procedure.
1) Enter the process adjustment mode in TV.
2) Use the cursor keys ( / ) and CH keys (
3) Verify that the Model name is displayed.
4) If the Model name doesn't match, select the values of the Model nmae with the VOL keys (+/-).
5) After selection in Step 4), press the OK key, and it is completed with OK displayed.
6) Use the cursor keys ( / ) and CH keys (
7) Verify that the panel size is displayed.
8) If the size doesn't match, select the values of the panel size with the VOL keys (+/-).
9) After selection in Step 8), press the OK key, and it is completed with OK displayed.
3. After replacing the LCD panel or LCD control PWB, adjust the VCOM in the following procedure.
1) Enter the process adjustment mode.
2) Use the cursor keys ( / ) and CH keys (
3) Press the OK key to verify that the adjustment pattern is displayed.
4) Use VOL keys (+/-) of R/C to adjust the flicker in the center of the screen to minimum.
5) When the optimal state is achieved in Step 4, press the OK key to turn the pattern to OFF.
RH-iXD212WJQZS
PC EDID
RH-iXC786WJNYQ
Monitor microcomputer
RH-iXD047WJQZQ
Flash
RH-iXC951WJN1Q
Main CPU
/
) of R/C to select the item [HDMI EDID WRITE] on the page 5/23.
/
) of R/C to select the item [MODEL NAME] on the page 23/23.
/
) of R/C to select the item [PANEL SIZE] on the page 23/23.
/
) of R/C to select the item [VCOM ADJ ] on the page 10/23.
Service Manual
6 – 1
LC-46/60LE925E
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