When Replacing Eeprom (Memory) Ic; Confirmation Of Initial Data - Sharp LC-20AD5E-BK Service Manual

CONFIRMATION OF CHECK SUM, MICON VERSION AND DIGITAL TV MICON FIRMWARE
AND POWER ON TOTAL HOURS
Initial total of MEMORY IC, MICON VERSION, Digital TV MICON Firmware and POWER ON TOTAL HOURS can be
checked on the screen. Total hours are displayed in 16 system of notation.
NOTE:
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. Turn on the POWER, and set to the TV mode.
2. Set the VOLUME to minimum.
3. Press both VOL. DOWN button on the set and Channel button (2) on the remote control for more than 2 seconds.
4. After the confirmation of MICON VERSION and Digital TV MICON Firmware, turn off the power.
ADDRESS and DATA should appear as FIG 1.
NOTE: The each item value might be
different according to each set.
Initial setting data check sum.
AD CONVERTER data check sum.
Main Micon Fimware Version
Sub Micon Fimware Version

CONFIRMATION OF INITIAL DATA

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. Turn on the POWER, and set to the TV mode.
2. Set the VOLUME to minimum.
3. 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.
ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS
4.
until required ADDRESS to be changed is reached.
5. Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".
6. Again, step through the DATA using UP/DOWN button until required DATA value has been selected.
7. Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.
8. 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.
9.
After the data input, set to the initializing of shipping.
10. Turn POWER on.
11. Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
12. After the finishing of the initializing of shipping, the unit will turn off automatically.
The unit will now have the correct DATA for the new MEMORY IC.

WHEN REPLACING EEPROM (MEMORY) IC

Version
Hardware version
Software version
ADDRESS DATA
INIT 0000 00
LDC ON 0000
ANALOG M: DB060-70328
ANALOG S: DB050-70330
A.0
CB00C74021
OK
END
INIT: 2ED0
VCT-P: 3451 LCD ON: 0000
ANALOG M: DB060-70328A
ANALOG S: DB050-70330A
FIG. 1
FIG. 2
C-2
Firmware Version
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)