SHARP LCD TV - LC-32DH65E - LC-37DH65E – Software update procedure – Service mode Access – White balance adjustment – Public mode access - LCD Television repair and service

Category: LCD Television Repair and Service 

Contents of this article 

• Factory reset procedure
• software updating procedure
• Entering to service mode 
• Hotel mode setting 

SHARP LC-32DH65E - LC-37DH65E

Entering and exiting the Service mode (Adjustment process mode)
1. Unplug the AC power cord of running TV set to force off the power.
2. While holding down the “VOL (-)” and “INPUT” keys on the set at once, plug in the AC power cord to turn on the power.
The letter “K” appears on the screen.
3. Next, hold down the “VOL (-)” and “P (DOWN )” keys on the set at once.
Multiple lines of blue characters appearing on the screen indicate that the set is now in the adjustment Process mode.
If you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.
4. To exit the adjustment process mode after the adjustment is done, unplug the AC power cord to force off the power. (When the power is turned off with the remote controller, once unplug the AC power cord and plug it in again. In this case, wait 10 seconds or so before plugging.) of R/C to select the item [VCOM ADJ] on the page 10/16.
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.

Initialization to factory settings

Procedure
# Enter the adjustment process mode.
# Move the cursor to [INDUSTRY INIT] on page 2/16.
# Use the R/C key to select a region from [EUROPE/ RUSSIA/ SWEDEN] and press the [OK] key.
# “EXECUTING” display appears.
# After a while, “INDUSTRY INIT SUCCESS” display appears, the setting is completed.
When succeeding: Background color (green)
When failing: Background color (red)

ADJUSTMENT PROCEDURE

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 procedure.
1. Procure the following units in order to replace the main unit, IC8101, IC5001, or IC5003.

AIN UNIT: DUNTKE685FM02 (LC-32DH65E/S)
DUNTKE685FM04 (LC-37DH65E/S)

NOTE: [Caution when replacing ICs in the main unit (IC1504)]
The above ICs are EEPROMs storing the EDID data of HDMI. Before replacing the relevant part, procure the following parts in which the data
have been rewritten.

IC1504 RH-IXC442WJN1S EDID (HDMI)
IC1503 RH-IXC697WJQZS EDID (PC)

2. After replacing the LCD panel or LCD control PWB, check PANEL_SIZE in the following procedure.
1) Enter the process adjustment mode.
2) Use the cursor keys UP/DPWN and P UP/DPWN of R/C to select the item [PANEL_SIZE] on the page 16/16.
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.
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 UP/DPWN and P UP/DPWN

Lamp error detection
Function
This LCD color TV set incorporates a lamp error detection feature that automatically turns off the power for safety under abnormal lamp or lamp
circuit conditions. If by any chance anything is wrong with the lamp or lamp circuit or if the lamp error detection feature is activated for some reason, the following will result.
1) The power is interrupted in about 6 seconds after it is turned on.
(The power LED on the front of the TV set turns red from green and keeps blinking in red: ON for 300ms and OFF for 1500ms.).
2) If the above phenomenon 1) occurs 5 times consecutively, it becomes impossible to turn on the power. (The power LED remained red).
Measures
1) Checking with lamp error detection OFF
Enter the adjustment process mode, referring to 2. Entering and exiting the adjustment process mode.
If there is a problem with the lamp or lamp circuit, the lamp will go out. (The power LED is green.)
Then, you can check the operation to see if the lamp and lamp circuit are in trouble.
Resetting the lamp error count
After the lamp and lamp circuit are found out of trouble, reset the lamp error count. If a lamp error is detected five consecutive times, the power
cannot be turned on. Using the cursor ( UP/DOWN ) key, move to the cursor to [LAMP ERROR RESET], Line 8 on adjustment process mode service page 2/16. With the cursor (LEFT/RIGHT) keys, select the [LAMP ERROR RESET] value. Finally press the cursor (OK) eys to reset the value to “0”.

HOTEL MODE (PUBLIC MODE)
1. Starting the Public Mode
# There are two following ways to display the PUBLIC Mode setting screen.
1) On the process adjustment mode screen (2/16), set the “HOTEL MODE” Flag to ON.
Turn off the power, and turn it on again, pressing the CHNNEL UP and VOLUME UP keys of the main unit at the same time.
2) Enter the Pass Word, and start the unit.
a) Turn on the power, pressing the INPUT and VOLUME UP keys of the main unit at the same time.
b) Display the Pass Word input screen.

Operation procedure
# The initial input position is the digit at the left end.
# For the numeric keys 0 to 9 of R/C, key input is accepted. Input of the other keys is prohibited.
# Change “–” to “*” by inputting the numeric key at the input position, and shift the input position rightward one digit.
# When three digits are completely input, the Pass Word is judged.
c) Check the Pass Word by inputting three digits.
If the Pass Word is 0,2,7  it shifts to the PUBLIC Mode setting screen.
In another case, the screen is erased, and it operates in the ordinary mode.

Exiting the Public Mode screen
# There are two following ways to exit the Public Mode setting screen.
1) Turn off the power.
2) Select “Execution” in the PUBLIC_Mode to execute it.
Activate the restart under the set content. Here, the START input SOURCE setting is excluded since this item is referred to only when the power is turned on.

Set value of the Public Mode
# When the shipment setting is done, a set each value in Public Mode is initialized.
(PUBLIC MODE in the process mode Setting of a flag is also initialized)
# Separately, the shipment beginnings when all except for each set value in Public Mode is initialized are provided for a process mode. (INDUSTRY INIT (-HOTEL))
# Only when turning on the HOTELE MODE item, each setting is effective.
# After it decides it with EXECUTE, it AC OFF/ON it to reflect a set value.

White Balance Adjustment
For white balance adjustment, adjust the offset values on pages 12/16.

[Condition of the unit for inspection] : PC mode, Modulated light (+16), Color temperature (High).
[Input signal condition] : HDMI 1080i 15IRE (LO), 78IRE (HI)
[Adjustment reference device] : Minolta CA-210
Adjustment procedure

1) Display the current adjustment status at R/G/B_GAIN(HI). (Page 12/16 of process adjustment) The signal of 78IRE is input.
2) Read the value of the luminance meter. x=0.272, y =0.277
3) Change R_GAIN (HI)/ B_GAIN (HI) (Adjustment offset value) on page 12/16 of process adjustment so that the values of the luminance meter approach x=0.272 and y =0.277.
(Basically, G is not changed. If adjustment fails with R and B, change G. When G is lowered, the weaker of R or B must be fixed.)
4) Display the adjustment status of the current R/G/B_GAIN(LO).
The signal of 15IRE is input.
Change R_GAIN (LO)/ B_GAIN (LO) (adjustment offset value) on page 12/16 of process adjustment so that the values of the luminance meter approach x =0.272 and y = 0.277.
5) Both HI and LO are repeating the step from 1 to 4 until becoming an aim value.
Adjustment reference standard value
Adjustment spec ± 0.002 Inspection spec ± 0.004 (point LO)
Adjustment spec ± 0.001 Inspection spec ± 0.002 (point HI)
6) EEP SAVE (16/16) of the process menu is turned on after the adjustment is completed and the white balance adjustment value is saved.

Upgrading the software
1. Turn off the AC power (Unplug the AC power cord).
2. Insert the upgrading USB flash memory for upgrade into the service slot.
3. While holding down the power button, plug in the AC power cord of the main unit to turn on the power.
4. Upgrade begins automatically.
After the set starts, the upgrade screen is displayed.

5. If any of the procedures fails, upgrade failure screen shows up. For the failing procedure, the “NG” marking turns red.
NOTE: In such case, try to upgrade the software again. If it still fails, the hardware may be in trouble.

6. When all the procedures are complete, upgrade success screen shows up. The new software version can be confirmed on screen.
The version number appears when each item has been successfully upgraded. Finally the main version number appears on screen.

7. Turn off the AC power (Unplug the AC power cord). Take out the upgrading USB flash memory.
It waits for about 20 seconds until the AC power supply is turned off.
8. Now the software has been upgraded.

NOTE: Then get the set started and call the process adjustment screen 1/16 to check the main software version.
CAUTION: 1) Do not take out and put in the USB flash memory during formatting.
2) It takes about one minute to the rewriting completion.
Please confirm the upgrade status on the screen becomes 100%.
3) The AC power supply of the set is waited for about 20 seconds until off (The AC outlet is pulled out) after the upgrade is completed.