When Replacing Eeprom (Memory) Ic - Toshiba SD-V280 Service Manual

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.
NOTE: INI 33 and INI 34 cannot be set. Because, the total time for the PLAY/REC of the main unit is recorded.
INIT +0
00
0E
10 AF
20 29
1. Connect the set to TV Monitor.
2. Turn on the POWER.
3. Press both CH UP button on the set and the FF button on the set for more than 2 seconds.
ADDRESS and DATA will appear on TV Monitor as Fig 1.
4. ADDRESS is now selected and should "blink". Using the SET + or - button on the remote, step through the ADDRESS until
required ADDRESS to be changed is reached.
5. Press ENTER to select DATA. When DATA is selected, it will "blink".
6. Again, step through the DATA using SET + or - button until required DATA value has been selected.
7. Pressing ENTER will take you back to ADDRESS for further selection if necessary.
8. Repeat steps 4 to 7 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.
The unit will now have the correct DATA for the new MEMORY IC.

WHEN REPLACING EEPROM (MEMORY) IC

+1 +2 +3 +4 +5
C2 DA 10 64 64
97 95 8A B0 55
01 15 77 61 31
+6 +7 +8 +9 +A
4A E6 0B 2B 86
31 04 88 A5 9F
29 04 00 00 00
Table 1
ADDRESS DATA
INIT 00 0E
PLAY/REC 0010
Fig. 1
C4-2
+B +C +D +E +F
2F 8A 08 0A 0F
3A 00 10 BF 00
00 A2 B0 02 ---