Read Sharp LC-90LE757E Service Manual online
LC-70LE747E/RU,80LE657E/RU,90LE757E/K/RU
5 – 1
LC-70LE747E
Service Manual
CHAPTER 5.
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.
cedure.
1. Procure the following units in order to replace the main unit.
MAIN UNIT: DKEYDG216FM54 (LC-90LE757E/K/RU)
MAIN UNIT: DKEYDG216FM55 (LC-80LE657E/RU)
MAIN UNIT: DKEYDG216FM56 (LC-70LE747E/RU)
NOTE: [Caution when replacing IC (IC2004) in the main unit]
The above IC are Monitor microprocessor.
Before replacing the relevant part, procure the following parts in which the data have been rewritten.
NOTE: [Caution when replacing ICs (IC3301, IC3103) in the main unit]
When replacing either IC3301 or IC3103, exchange MAIN units for
MAIN UNIT: DKEYDG216FM54 (LC-90LE757E/K/RU)
MAIN UNIT: DKEYDG216FM55 (LC-80LE657E/RU)
MAIN UNIT: DKEYDG216FM56 (LC-70LE747E/RU)
Each part should not be individually exchanged.
NOTE: HDMI ROM Writing
After replacing IC2601, execute “HDMI EDID WRITE” on the page 5/21.
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 (
/
) of R/C to select the item [HDMI EDID WRITE] on the page 5/21.
3) It is completed with OK displayed.
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 (
/
) of R/C to select the item [MODEL NAME] on the page 21/21.
3) Verify that the Model name is displayed.
4) If the Model name doesn’t match, select the values of the Model name 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 (
/
) of R/C to select the item [PANEL_SIZE] on the page 21/21.
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.
10)After setting [MODEL NAME] [PANEL_SIZE], unplug the AC power cord and plug it back in.
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 (
/
) of R/C to select the item [VCOM ADJ] on the page 10/21.
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.
IC2004
RH-iXD515WJN8Q
Monitor microprocessor
Click on the first or last page to see other LC-90LE757E service manuals if exist.