System-Board Jumpers - IBM 88371RU Maintenance And Troubleshooting Manual

System-board jumpers

Figure 57 shows the location of the jumper blocks on the system board.
Password reset
(J22)
Figure 57. System-board jumpers
Note: Jumpers not illustrated or described are reserved.
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xSeries 336 Type 1879 and Type 8837: Hardware Maintenance Manual and Troubleshooting Guide
BIOS boot backup (J21)
3
2
1
3 2 1
Reserved (J43)
Force update BMC (J48)
Table 4. System board jumpers
Jumper
J21 (BIOS boot page)
J22 (password override)
J27 (disable video)
J40 (force power-on)
J48 (force-update BMC)
Reserved (J24)
Default position
Pins 1 and 2
Pins 1 and 2
No jumper
No jumper
No jumper
Force power-on (J40)
Reserved (J34)
Disable video (J27)