Wednesday, December 31, 2014

SHARP LC26GA3E POWER SUPPLY AND SERVICE MODE


                      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.

After replacement of any PWB unit and/or IC for repair, please note the following.
When replacing the PWB and IC, pay attention to the following precautions.
When replacing units below, order those where the software has been written.
DVI unit : DUNTKC595FE50
CPU unit : DUNTKC427FE20
LCD CONTROLLER unit : DUNTKC268FE86
Upgrading of each microprocessor software
Caution: Never "POWER OFF" the unit when software upgrade is ongoing.
Otherwise the system may be damaged beyond recovery.
Software version upgrade
This unit has main and monitor microcomputer softwares.
These can be rewritten via a general-purpose SD memory card.
The procedures to rewrite the main and monitor microcomputer softwares are described below.
Main software version upgrade
SD memory card of 16MB or higher capacity
 PC running on Windows 98/98SE/ME/2000/XP operating system
 SD memory card reader/writer with USB connectivity and PC card adapter
SD memory card formatting software

Entering and exiting the adjustment process mode (SERVICE)

1. Before entering the adjustment process mode, press the "TV RESET" button or execute the AV position RESET in the video adjustment menu.

2. Pull out the AC cord to turn off the TV.

3. While holding down the "VOL (–)" and "INPUT" keys at a time, press the POWER switch of the main unit to turn on the power.
The letter " K " appears on the screen.

4 Press the "VOL (–)" and CH (V) keys at the same time. When multiple lines of blue letters are displayed on the screen, the unit has entered the process adjustment mode. If the unit does not enter the process adjustment mode (if the same display as the normal start appears), try again.

5. To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)