3-26 Troubleshooting
HP 3000 Core I/O Configuration switches and Jumpers:
SW1 = SE SCSI Address = 7. This is set at the factory and sets the host adaptor address to 7 which is the
highest priority on the SCSI bus.
U78 F/W SCSI Configuration Switch = This is the address, bus parity, and factory selftest configuration
switch. Refer to Figure 3-5 for switch setting descriptions.
Figure 3-5. U78 Switch Settings
SCSI Address = 7 This is the default setting for positions 1 to 4.
par = SCSI bus parity checking enabled (1) or disabled (0). The default setting for switch 5 is a 1.
Reserved = Switches 6 to 8 are set to 0 and affect selftest operation if changed (manufacturing use
only).
LAN Option Switch = Three rows of pins with a jumper block placed to capture all center pins plus left set
of pins, or center pins plus right sets of pins, as described:
External Modem Connect = This is the connection point for the new external modem card.
Jumper Block LEFT AUI (Thick LAN) enabled. This is the default setting.
Jumper Block RIGHT Thin LAN enabled.
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