Toshiba D-VR4SU Service Manual page 64
Hi-fi vcr & dvd video recorder
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Also See for D-VR4SU:
- Owner's manual (88 pages) ,
- Service manual (9 pages) ,
- Owner's manual (92 pages)
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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 and 2.
NOTE:
After the DATA change, if the ENTER button is not pressed at the DATA selection mode and the power is turned off,
the DATA change does not performed.
After the DATA change, press the ENTER button by all means and set to the ADDRESS selection mode, then turn off
the power.
VCR side EEPROM (IC3099) initial setting
NOTE: No need setting for after INI 35.
INIT +0
00
2E
10
B2
20
3A
30
41
1.
Connect the set to TV Monitor.
2.
Turn on the POWER, and set to the VCR mode.
3.
Press both CH UP button on the set and the FF button on the set for more than 2 seconds.
ADDRESS and DATA will appear on TV Monitor as Fig 1.
4.
ADDRESS is now selected and should "blink". Using the Tracking + or - button on the remote, step through the ADDRESS
until required ADDRESS to be changed is reached.
5.
Press ENTER to select DATA. When DATA is selected, it will "blink".
6.
Again, step through the DATA using Tracking + or - button until required DATA value has been selected.
7.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
8.
Repeat steps 4 to 7 until all data has been checked.
9.
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.
10.
Turn on the POWER, and set to the DVD mode.
11.
Press both CH UP button on the set and the PLAY button on the set for more than 2 seconds.
12.
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.
WHEN REPLACING EEPROM (MEMORY) IC
+1
+2
+3
+4
+5
67
92
82
64
64
9A
97
8C
A1
20
11
22
70
61
2A
FF
D7
70
7A
F0
+6
+7
+8
+9
+A
4A
86
0B
2A
86
31
04
88
A5
9F
3A
00
0B
00
00
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Table 1
ADDRESS DATA
OEC0154A 108B
INIT 00 2E
DATA 121B
ROM EAA0
PLAY/REC 0000
Fig. 1
C4-1
+B
+C
+D
+E
+F
35
8A
08
0A
01
3A
00
10
BF
00
00
9A
B2
00
29
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D-VR4SU/D-VR4SC
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