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20 V7865 Hardware Reference Manual
1.5 Jumper Settings
CMOS Password
To clear the CMOS password:
1. Turn off power to the unit.
2. Momentarily short the pins of E11 for approximately five seconds.
3. Power up the unit.
When power is reapplied to the unit, the CMOS password will be cleared.
Figure 1-2 COM1 Configuration for RS232/RS422 Select
Table 1-2 CMOS Clear - Header E11
Select
Jumper Position
Clear CMOS
In
Normal Operation
Out
Table 1-3 Boot Continuation - Header E12
Select
Jumper Position
Load Default settings and continue booting on CMOS error
In
Stop booting on CMOS error
Out
Table 1-4 COM Port (RS232/422 Select) - Header E13, E14, E15, E17
Select
E13 Position
E14 Position
E15 Position
E17 Position
RS232 In
3-5,
4-6
In
Both
Out
RS422 w/Termination
Out
1-3, 2-4
In
1-3, 2-4
RS422 w/o Termination
Out
1-3, 2-4
In
Both Out
E14
E13
E17
E15
1 3 5 1 3
E14
E13
E17
E15
1 3 5 1 3
E14
E13
E17
E15
1 3 5 1 3
RS232
RS422 w/Termination
RS422 w/o Termination
Table 1-5 Battery Enable (
User Configurable
) - Header E27
Select
Jumper Position
Normal Use
In
Disable Battery
Out
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