JVC AV-20FD22, Service Manual

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12
AV-20FD22
NOTE FOR THE REPLACING OF 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.
F9 43 05 01 F1 23 27 F7 81 CD
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A
+B +C +D +E +F INI
64 67 69 2A 6B 6C 6D 6E 6F
54 74 55 75 75 56 56 76 76 57
78 59 59 79 79 5A 5A 7A 7A 5B
7C 5D 7D 7D 5E 5E 7E 7E 5F
D9 3F 3F 40 61 63 00
10
26
70 71 52 72 53 73
20 57 77 77 58 58 78
30 5B 7B 7B 5C 5C 7C
40 5D 5F 5F 7F 7F BF B7
B9 A1 C5 00 C7 00 00 00 97
D9 B0 84 88 9A 9F 2A 5A 00 00
50 AC AF 7F A8 B8 B4 7A
60 00 10 --- --- --- ---
INIT 00 83
0010 CRT ON
ADDRESS DATA
3.
4.
5.
6.
7.
8.
The unit will now have the correct DATA for the new MEMORY IC.
Table 1
1.
2.
Fig. 1
Enter DATA SET mode by setting VOLUME to minimum.
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.
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.
Press ENTER to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using VOL. UP/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.