Memorex MVT2137, Service Manual

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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 5 seconds before Power On or alternatively, discharge backup capacitor.
3.
4.
5.
6.
7.
8.
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 FF or REW 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 FF or REW 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.
Fig. 1
INIT 00 03
POWER ON 0010
PLAY/REC 0003
ADDRESS DATA
88 0A 62 63 43 14 34 09 51 38
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9
+A
+B +C +D +E +F INI
B2 92 93 00 00 30 05 08 00
06 29 01 17 10 60 32 3A DA D7
28 29 2A 2C 2E 30 32 34 36 38
43 45 46 47 48 49 4A 4B 4C
30 66 00 40 00 10 00
10 9A A9 0F 94 3E 06 04
10 15 20 25 26 27
30 3A 3C 3E 40 41 42
40 44
20
53 55 56 57 58 59 5A 5B 5C
63 64 66 69 6D 74 79 7C 7E 7F
50 54 5D 5E 5F 60 61 62
4D 4E 4F 50 51 52
60
C4-1