Sharp LCD TV LC30HV4U - Service adjustments and troubleshooting
Preparation for adjustment1. The product has been adjusted and optimized in the factory. If the product needs to be readjusted for some reason, e.g., after parts replacement, follow the instructions shown below.
2. Control parameter values set in the in-process adjustment mode has been stored in the corresponding registers. When the product is readjusted, the contents of the registers are changed. Before readjustment, factory settings should be noted in case the contents of registers require to be restored.
3. Use a stabilized AC power supply.
4. To rewrite a program, you should note the items ("OSD MENU" and "Adjustment Values") you want to change and initialize EEPROM, and then rewrite the changes into EEPROM.
How to enter the in-process adjustment mode
Exercise great care to hide the procedure in
entering the in-process adjustment mode from the customer. Inadvertent setting
changes in this mode may cause a fatal error resulting in a program being
unrecoverable.
Entering the in-process adjustment mode:
1. Connect the system cable between the display and AVC system.
Turn off the "MAIN POWER" button of the display once.
Turn on the main power while holding down the "INPUT" button and the "VOL (-)" button of the Display simultaneously.
The system will be activated.
If you see multiple lines of blue characters on the display, you are in the in-process adjustment mode. If not (the normal activation screen opens), retry.
2. Accessing the inspection process mode:
After activation of the system, make adjustments according to the instructions indicated on the process adjustment OSD menu screen.
Move to the General Process Adjustment (AVC System Section Process).
3. Restoring factory settings: (At the time of "INDUSTRY INIT" execution, please wait for about 30 seconds until /// disappears.)
Turn off the "MAIN POWER" button of the display once.
Turn on the main power while holding down the "INPUT" button and the "VOL (-)" button of the Display simultaneously.
The system will be activated.
If you see multiple lines of blue characters on the display, you are in the in-process adjustment mode. If not (the normal activation screen opens), retry.
2. Accessing the inspection process mode:
After activation of the system, make adjustments according to the instructions indicated on the process adjustment OSD menu screen.
Move to the General Process Adjustment (AVC System Section Process).
3. Restoring factory settings: (At the time of "INDUSTRY INIT" execution, please wait for about 30 seconds until /// disappears.)
When the "INDUSTRY INIT" button is
selected after activation of the system, factory channel setting remains
unchanged.
After the system exits from the in-process adjustment mode.
Changes made by the user will default to factory settings. Note that channel setting is also initialized.
4. Exiting from the in-process adjustment mode:
Unplug the power cable while the system is in the in-process adjustment mode to exit from the mode.
Take care not to press the "POWER" button on the remote controller or the AVC system after using factory settings to run the system.
5. OSD menu screen and menu items during manual adjustment:
The layout and menu items of the OSD menu screen may somewhat vary depending on the program versions.
Just rewriting a program does not cause settings to be "initial values". (Preparation for adjustment).
After the system exits from the in-process adjustment mode.
Changes made by the user will default to factory settings. Note that channel setting is also initialized.
4. Exiting from the in-process adjustment mode:
Unplug the power cable while the system is in the in-process adjustment mode to exit from the mode.
Take care not to press the "POWER" button on the remote controller or the AVC system after using factory settings to run the system.
5. OSD menu screen and menu items during manual adjustment:
The layout and menu items of the OSD menu screen may somewhat vary depending on the program versions.
Just rewriting a program does not cause settings to be "initial values". (Preparation for adjustment).
Button operation in the in-process adjustment mode
Cursor Up Move to the next page
Cursor Down Back to the previous page
Volume (+) Increase the setting by 1
Volume (-) Decrease the setting by 1
SET/ENTER Execute the function
Cursor Left Increase the setting by 10
Cursor Right Decrease the setting by 10
Channel (Up) Move the cursor up
Channel (Down) Move the cursor down
INPUT Change input (Tuner -> Input 1 -> Input 2 ->Input 3 -> Input 4 -> PC ->)
Cursor Up Move to the next page
Cursor Down Back to the previous page
Volume (+) Increase the setting by 1
Volume (-) Decrease the setting by 1
SET/ENTER Execute the function
Cursor Left Increase the setting by 10
Cursor Right Decrease the setting by 10
Channel (Up) Move the cursor up
Channel (Down) Move the cursor down
INPUT Change input (Tuner -> Input 1 -> Input 2 ->Input 3 -> Input 4 -> PC ->)
In-process adjustment screen layout
6. Loading the backup data and setting HDCP when the PC I/F unit is replaced
Nearly all data including factory settings, user settings, and channel setting is stored in the PC I/F unit. The product comes with EEPROM (IC1506) on the Main Unit in case the PC I/F unit is replaced; original data backed up on the EEPROM can be loaded to the new PC I/F unit.
How to load the backup data
Select EEPROM RECOVER in the OSD menu (page 7/15) and turn the "Volume" key ON; then press "SET/ ENTER".
How to set HDCP
After completion of adjustments, select KEY WRITE "ON" in the OSD menu (page 1/15) for manual adjustment and turn the "Volume" key ON; then press "SET/ENTER".
TROUBLE SHOOTING Table
