Toshiba 20HL85 Service Manual page 14

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.
1. Turn on the POWER, and set to the TV mode.
2. Set the VOLUME to minimum.
3. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 1.
4. ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS until
Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using UP/DOWN button until required DATA value has been selected.
5.
6. Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.
7. Repeat steps 3 to 6 until all data has been checked.
8. 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.
9. Turn POWER on.
10. Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
11. 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.
INIT +0
000 3F
010 05
020 40
030 72
040 46
050 00
060 E6
070 02
080 1E
090 88
WHEN REPLACING EEPROM (MEMORY) IC
INIT
LCD ON 0000
OEC7133A_060
+1 +2 +3 +4 +5
3F 01 99 6F 08
12 1F 24 40 45
08 3E 00 00 00
99 59 68 99 59
63 68 49 53 65
00 00 D0 73 14
E6 EB F2 15 F5
12 22 00 0D F0
0F 04 18 91 40
00 3C 20 3C 20
ADDRESS DATA
000 3F
FIG. 1
+6 +7 +8 +9
23 F9 00 30
5D 62 45 4A
00 00 00 00
59 99 59 40
6A 30 00 5C
1C 2C 24 16
08 0D 07 07
F0 F0 F0 F0
87 00 88 00
3C 20 3C 20
Table 1-1
C-2
+A +B +C +D +E
80 55 B3 36 03
19 00 13 57 00
00 00 00 00 00
20 88 0D 45 80
62 00 00 00 00
00 00 00 00 00
73 00 00 00 06
26 03 26 03 1E
00 00 00 00 87
00 23 27 2B 2F
0F
60
00
00
40
00
EC
F4
0F
00
32