Memorex MVDT2002, Service Manual

Page: 143 / 202

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: No need to set data for the position of the mark "@" due to the adjustment value.
C4-1
2F 40 F1 82 03 5D 45 20 06 08
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9
+A
+B +C +D +E +F INI
40 E3 52 03 02 00 4F 00 F4
99 96 8B 9F B7 AB 91 B6 1A 0B
45 31 33 FF 00
D0 88 A6 01 86 65 00
10 0F 15 4B 1A 54 83 B1
3D 18 37 16 27 30
30
20
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.
Fig. 1
ADDRESS is now selected and should "blink". Using the UP or DOWN 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 UP or DOWN 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.
Press both VOL. DOWN button on the set and the 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.
Enter DATA SET mode by setting VOLUME to minimum.
Press both VOL. DOWN button on the set and the Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 1.
INIT 00 2F
POWER ON 0010
PLAY/REC 0003
ADDRESS DATA
88 89 88 FF FF 40
00 00 23 FF FF FF 80 88 83
@@ @@
18 1C 21 25 29 2C 30 34 3B
0F 15
3E 42 45 47 48 50
4B 4C 4D 4E 4F 50 51 51 52 49
4A
53 54 55 55 56 60 59 5A 5A 5B 5C 5D 5E 60 61
57
58
63
64
65
67
68 70 6E
70
72 77 7B 80 84 86 87 6A 6C
80 ---
87 88 89 8A 8B
--- ---
---
--- --- --- --- ---
--- ---