When Replacing Eeprom (Memory) Ic; Confirmation Of Initial Data - Sharp LC-20SD5E Service Manual

CONFIRMATION OF CHECK SUM, MICON VERSION, DIGITAL FIRMWARE AND POWER
ON TOTAL HOURS
Initial total of MICON VERSION, Digital 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 Firmware, turn off the power.
NOTE: The each item value might be different according to each set.
Digital
Hardware
Digital ware
Soft
Initial setting data check sum.
SCALER data check sum.
Main Micon Firmware Version
Sub Micon Firmware 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.
Set the VOLUME to minimum.
2.
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.
NOTE: No need to set data other position than 0D00~0E3F and 2000~7FFF.
4. 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.
5. Press LEFT/RIGHT 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 LEFT/RIGHT button will take you back to ADDRESS for further selection if necessary.
Repeat steps 4 to 6 until all data has been checked.
8.
9. 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.
10. Turn on the Power.
11. Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
12.
13. 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
OK
INIT : 2CE4
VCT-P : D92D
ANALOG M : DB090_70605A
ANALOG S : DB0A0_70508A
INIT
LCD ON 0000
ANALOG M : DB090_70605A
ANALOG S : DB0A0_70508A
A.0
CB00C76021
END
LCD ON : 0000
FIG. 1
DATA
ADDRESS
0000 00
FIG. 2
C-2
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)