Toshiba VTV2056, Service Manual

Page: 26 / 76

WHEN REPLACING EEPROM (MEMORY) IC
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: Initial Data setting will not be possible if clock has been set. To reset clock, either unplug AC cord and allow
at least 30 minutes before Power On or alternatively, discharge backup capacitor.
No need setting for after INI 11F due to the adjustment value.
C4-1
3.
4.
5.
6.
7.
8.
9.
10.
11.
The unit will now have the correct DATA for the new MEMORY IC.
Table 1
1.
2. Enter DATA SET mode by setting VOLUME to minimum.
While holding down VOLUME button on front cabinet, press key 6 on remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 1.
ADDRESS is now selected and should "blink". Using the PLAY or STOP button on the remote, step through the
ADDRESS until required ADDRESS to be changed is reached.
Press ENTER to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using PLAY or STOP button until required DATA value has been selected.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
Repeat steps 3 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.
After the data input, set to the initializing of shipping.
Turn POWER on.
While holding down VOLUME button on front cabinet, press key 1 on remote control for more than 2 seconds.
After the finishing of the initializing of shipping, the unit will turn off automatically.
Fig. 1
INIT 0B4 00
POWER ON 0010
PLAY/REC 0010
ADDRESS DATA
--- --- --- --- 00 06 00 80 C0 4D
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9
+A
+B +C +D +E +F INI
00 98 B3 00 05 63 65 66 0C
3A 0F 4B 20 44 63 64 65 64 EA
0F 31 00 F0 5F 0F F0 65 F0 60
A0 20 08 BF 10 00 00 00 00
01 E7 C4 C1 0A 21 0B0
0C0 7F 1F 3B 32 17 1D 1B
0D0 00 F5 56 A0 68 5F
0E0 99 B2 9A 92 8C B2
0F0 C4 00 00 00 00 00 00
27 07 15 00 00 00 00 00 00
00 03 04 00 40 20 20 00 00 40
100
03
00 00 09 00 82 10
110 00 00 00 00 00 00