Confirmation Of Check Sum; When Replacing Eeprom (Memory) Ic - Toshiba 17HLV85 Service Manual

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

CONFIRMATION OF CHECK SUM

MICON Version

WHEN REPLACING EEPROM (MEMORY) IC

INIT
LCD ON 0010
OEC7133A_060
INIT : 71E3
ROM : 0000
VOLUME: 189E
ADC : A05B
DVP : DF31
LCD ON 0000
OEC7133A_060
FIG. 1
ADDRESS DATA
000 FF
FIG. 1
C-3
Initialsetting data check sum.
Rom correction data check sum.
AUDIO External terminal Volune.
AD CONVERTER data check sum.
SCALER data check sum.
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)