When Replacing Eeprom (Memory) Ic - Toshiba 19DV550P Service Manual

CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS AND MICON VERSION
Initial total of MEMORY IC, POWER ON total hours and MICON VERSIONcan 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 each check sum, turn off the power.
NOTE: The each item value might be different according to each set.
Initial setting data check sum.
SCALER data check sum.
EEPROM version.
Main Micon check sum.
Sub Micon check sum.
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.
NOTE: No need to set data other position than 0D00~0E3F and 1000~1003, 1322~1413, 152E~158B, 1704~1825,
1828~18FF, 1900~7FFF.
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.
8. Repeat steps 4 to 6 until all data has been checked.
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.
12. Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
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.
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WHEN REPLACING EEPROM (MEMORY) IC

INIT : 5633 DVP-fHD : 00FD
VCT-P : 3901 LCD ON : @@@@
EEPROM : W51K02CM00
ANALOG M : DB1E0_80820A
ANALOG S : DB120_80225A
ADDRESS
INIT 0000
LCD ON @@@@
ANALOG M : DB1E0_80820A
ANALOG S : DB120_80225A
FIG. 2
FIG. 1
DATA
00
C-3
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)
19DV550P/19DV551P