Toshiba 14N21NS service manual When Replacing Eeprom Memory IC, Ini

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 setting for the position of the mark @ due to the adjustment value.

INI	+0	+1	+2	+3	+4	+5	+6	+7	+8	+9	+A	+B	+C	+D	+E	+F
00	---	00	00	00	00	41	80	48	00	23	27	01	03	30	06	14
10	10	00	80	80	80	3C	40	@	@	9F	@	80	00	44	@	@
20	@	@	@	@	C0	00	@	20	@	00	18	@	00	@	@	0F
30	00	@	@	@	07	00	00	00	00	00	00	00	00	00	00	00
40	7F	6F	5F	4F	3F	39	34	2F	2D	2B	29	27	25	23	21	20
50	1F	1E	1D	1C	1B	1A	19	18	17	16	15	14	13	13	12	12
60	11	11	10	10	0F	0F	0E	0E	0D	0D	0C	0C	0B	0B	0A	0A
70	09	09	08	08	07	07	06	05	04	04	03	03	03	02	02	02
80	22	23	CD	CF	D2	D6	D9	96	98	9C	9D	55	56	58	5A	5C
90	5D	5E	---	---	---	---	---	---	---	---	---	---	---	---	---	---

Table 1

1.Enter DATA SET mode by setting VOLUME to minimum.

2.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.

ADDRESS DATA

INIT 01 00

CRT ON 0010

Fig. 1

3.ADDRESS is now selected and should "blink". Using the VOL. +/- button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached.

4.Press OK to select DATA. When DATA is selected, it will "blink".

5.Again, step through the DATA using VOL. +/- button until required DATA value has been selected.

6.Pressing OK 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.

The unit will now have the correct DATA for the new MEMORY IC.

C-2