Motorola MVME166IG/D2 - Manual (Page 41)

Hardware Preparation
MVME166IG/D2 2-5
2
SRAM Backup Power Source Select Header J7
Header J7 is used to select the power source used to backup the SRAM on the
MVME166.
C
aution
Do not remove all jumpers from J7. This may disable the
SRAM.
If the battery is removed, jumpers must be installed on J7,
between pins 1 to 3 and pins 2 to 4, as shown in the Factory
Configuration drawing above.
J7
1
5
2
6
Primary Source OnboardBattery
Secondary Source Onboard Battery
J7
1
5
2
6
Primary Source VMEbus +5V STBY
Secondary Source VMEbus +5V STBY
(Factory Configuration)
J7
1
5
2
6
Primary Source VMEbus +5V STBY
Secondary Source Onboard Battery
J7
1
5
2
6
Primary Source Onboard Battery
Secondary Source VMEbus +5V STBY