LC-20S5E - Sharp TV Service Manual (repair manual). Page 15

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C-2
CONFIRMATION OF CHECK SUM, MICON VERSION AND POWER ON TOTAL HOURS.
Initial total of MEMORY IC and REGISTER DATA, MICON VERSION and POWER ON total hours can be checked on the
screen. Total hours are displayed in 16 system of notation.
NOTE:
Initial setting data check sum.
MICON Version
WHEN REPLACING EEPROM (MEMORY) IC
If you set a factory initialization, the total hours is reset to "0".
Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
1.
2.
3.
4.
Turn on the POWER.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (2) on the remote control for more than 2 seconds.
After the confirmation of CHECK SUM, MICON VERSION and POWER ON TOTAL HOURS, turn off the power.
INIT :   28B9
VCT-P :   7C74
LCD ON :  0000
DB010_70129A
FIG. 1
POWER ON total hours.
 = (16 x 16 x 16 x thousands digit value)
 + (16 x 16 x hundreds digit value)
 + (16 x tens digit value)
 + (ones digit value)
Register data check sum.
4.
5.
6.
7.
8.
9.
10.
11.
12.
The unit will now have the correct DATA for the new MEMORY IC.
ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS
until required ADDRESS to be changed is reached.
Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using UP/DOWN button until required DATA value has been selected.
Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.
Repeat steps 4 to 6 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After the data input, set to the initializing of shipping.
Turn POWER on.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
After the finishing of the initializing of shipping, the unit will turn off automatically.
ADDRESS
DATA
FIG. 2
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to INITIAL SETTING TABLE (Attached "INITIAL DATA").
1.
2.
3.
Turn on the POWER, and set to the TV mode.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 2.
CONFIRMATION OF INITIAL DATA
INIT   0000   00
LDC ON   0000
DB010_70129A
NOTE: The each item value might be different according to each set.
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