When Replacing Eeprom (Memory) Ic - Akai CFTD2052 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: No need to set data for between position INI 10 and INI 4F due to the adjustment value.
+0
INI
00
25
50 00
1. Turn on the POWER, and set to the TV mode.
2. Enter DATA SET mode by setting VOLUME to minimum.
3. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second.
ADDRESS and DATA should appear as FIG 1.
4. ADDRESS is now selected and should "blink". Using the VOL. UP/DOWN 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 VOL. UP/DOWN 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.
After the data input, set to the initializing of shipping.
10.
Turn POWER on.
11.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 1 second.
12.
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

+1 +2 +3 +4 +5
15 73 61 00 10
01 20 00 00 00
+6 +7 +8 +9 +A
45
02 69 80 40
17 00 00 00 05
Table 1
ADDRESS DATA
INIT 00 25
CRT ON 0010
FIG. 1
C-2
+B +C +D +E +F
F3 01 00 19 1B
00 00 00 --- ---