Chapter 2. Adjustment; Adjustment Procedure - Sharp LC-32LE705E/S Service Manual

CHAPTER 2.
LC-32LE705E 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, IC3302 and IC8401.
MAIN UNIT for service: DKEYDF306FM10
NOTE: [Caution when replacing ICs in the main unit (IC501,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.
IC501 RH-iXC697WJQZS
IC2002 RH-IXC786WJNAQ
NOTE: [Caution when replacing ICs in the main unit (IC8401,IC3302)]
When replacing either IC8401 or IC3302, exchange MAIN units for DKEYDF306FM10
Each part should not be individually exchanged.
IC8401 RH-IXC147WJQZQ
IC3302 RH-IXC951WJQZQ
NOTE: HDMI ROM Writing
After replacing IC1504, execute "HDMI EDID WRITE" on the page 5/17
Please execute it after checking MODEL NAME & INCH SIZE. are correct.
The ROM data based on information of MODEL NAME & INCH SIZE
1) Enter the process adjustment mode in AVC.
2) Use the cursor 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 AVC.
2) Use the cursor 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.
3. After replacing the LCD panel or LCD control UNIT, check PANEL_SIZE in the following procedure.
1) Enter the process adjustment mode in AVC.
2) Use the cursor keys (
3) Verify that the panel size is displayed.
4) If the size doesn't match, select the values of the panel size with the VOL(+/-) keys.
5) After selection in Step 4), press the OK key, and it is completed with OK displayed.
4. 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 (
3) Press the OK key to verify that the adjustment pattern is displayed.
4) Use the +/- keys of VOL 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.
PC
Monitor microcomputer
Flash
Main CPU
/ ) and P keys ( /
/ ) and P keys ( /
/ ) and P keys ( /
/ ) and P ( / ) of R/C to select the item [VCOM ADJ] on the page 10/17.
LC-32/40/46LE705E/S, LU705E/S, LX705E, LC-52LE705E/S
Service Manual
) of R/C to select the item [HDMI EDID WRITE] on the page 5/17.
) of R/C to select the item [MODEL NAME] on the page 17/17.
) of R/C to select the item [PANEL_SIZE] on the page 17/17.
2 – 1