SHARP LC-30HV6U SERVICE MODE LED BLINKING CODE AND ADJUSTMENTS

SHARP LC-30HV6U SERVICE MODE LED BLINKING CODE AND ADJUSTMENTS

SHARP LC-30HV6U 

ADJUSTMENT PROCEDURES
The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.
Preparation
Note that the unit should be replaced when the receiver IC (IC2206), CONFIG ROM (IC2202) or microprocessor (IC2004) is replaced.
Applicable unit: DKEYHC094FE51
 Adjusting procedure
# VLS BIAS (15V) voltage adjustment
# Entering the adjustment process mode > COM BIAS adjustment > Background adjustment
How to enter the adjustment process mode
When the AVC center is not connected
# Turn OFF the monitor main power. Turning ON the monitor main power while pressing the "INPUT" key and "VOL (–)" key on the top face of the monitor main body together will establish the "Monitor Process" mode.
When the AVC center is connected
# Turn OFF the monitor main power. Turning ON the monitor main power while pressing the "CH (down)" key and "VOL (+)" key on the top face of the monitor main body together will establish "Monitor Process" mode.
In each case of (1) and (2), "<K>" is displayed in the upper left portion of the screen. Then, pressing any key will bring you to the first page of the "Monitor Adjustment" mode.
> To exit the adjustment process mode, turn OFF the main power.

Adjustment process mode key operation table

Key	Function 1 (when on the left side of a page)	Function 2 (when changing a numeric value)
Cursor UP	Moving up by one item or moving to the previous page (when at the top)	Incrementing the adjustment value by one or executing the item (in the case of W or R items)
Cursor DOWN	Moving down by one item or moving to the next page (when at the bottom)	Decrementing the adjustment value by one or executing the item (in the case of W or R items)
Cursor RIGHT	Moving to the right by one item or moving to another page (in the case of the initial page)	Moving to the right by one item
Cursor LEFT	Moving to the left by one item or moving to another page (in the case of the initial page)	Moving to the left by one item
ENTER	Test pattern off	Executing the item (in the case of W or R items)
INPUT	Moving to the next page	Moving to the next page
CH (UP)	Moving down by one item or moving to the next page (when at the bottom)	Incrementing the adjustment value by one or executing the item (in the case of W or R items)
CH (Down)	Moving down by one item or moving to the next page (when at the bottom)	Decrementing the adjustment value by one or executing the item (in the case of W or R items)
VOL (+)	Moving to the right by one item or moving to another page (in the case of the initial page)	Moving to the right by one item
VOL (–)	Moving to the left by one item or moving to another page (in the case of the initial page)	Moving to the left by one item

Adjustment
VLS BIAS (13V) voltage adjustment (R4231)
Connect a digital volt meter to TL4122 (or C4180+) on the LCD Control PWB and make a adjustment with the R4231 so that the voltage becomes 13.00V±0.05V.
COM BIAS adjustment
Shift to the "COM BIAS" item with the cursor UP/DOWN key and select a numeric value with the cursor RIGHT/LEFT key. Changing the numeric value with the cursor UP/DOWN key will make appear the test pattern. Make an adjustment so that the flicker near the center of the screen is minimized.
Background adjustment
Start up the set with the AVC System connected and adjust the background of the monitor.
# Procedure
1) Display the adjustment screen (200-level gray scale on High side, 48-level gray scale on Low side).
2) Adjust "R OFFSET", "G OFFSET" and "B OFFSET" so that the 200-level gray scale pattern becomes normative.
Adjust the chromaticity of the High pattern (in the left portion of the screen) so that x = 0.290 and y = 0.299.
3) Adjust "R GAMMA", "G GAMMA" and "B GAMMA" so that the 48-level gray scale pattern becomes normative.
Adjust the chromaticity of the Low pattern (in the right portion of the screen) so that x = 0.276 and y = 0.278.
The above-mentioned adjustments can be made according to the following procedure.

Adjusting method using RS-232C
# Get a personal computer with a COM port (RS-232C) equipped with WINDOWS 95/98/me/2000/xp and a RS-232C crossing cable
# Start up the set with the RS-232C cable connected.
# Start up the terminal software. (Freeware products available on the Internet can be used.)
# Make setting as shown below.
Baud rate : 9600
Data : 8 bits
Parity : None
Stop : 1 bit
Flow control : None
# If the above setting is made correctly, pressing the "SET/ENTER" key on the PC will make "ERR" appear
on the terminal software.
# In this state, entering a command shown in the table bellow and pressing the "SET/ENTER" key will allow you to make an adjustment.
If "OK" is displayed on the terminal software after the "SET/ENTER" key is pressed, the command has been entered successfully. If "ERR" is displayed, enter the command again.

Power LED blinking timing at the time of error occurrence

Cable error - AVC-side power error Blinking once: Slow
Lamp error - Blinking once:

Fast AVC temperature error - Blinking three times
AVC fan error - Blinking four times
Monitor temperature error - Blinking five times
Monitor fan error - Blinking six times
Monitor 1-bit error - Blinking seven times
Monitor power error - Blinking twice