Product data

MAP 2340: 2104 SCSI Bus
You are here because the using system cannot get access to any SCSI device (disk
drive module or enclosure services).
Attention: Unless the using system needs to be switched off for some other reason, do
not switch off the using system when servicing the 2104 or any of its SCSI devices.
Power cables and external SCSI cables that connect the 2104 to the using system can
be disconnected while that system is running.
Step 1. (from step 14 in MAP 2010: 2104 START)
Observe the SCSI Bus Split switch on the switch card assembly (see Switch
Card Assembly Switcheson page 9).
Is the SCSI Bus Split switch set to Off?
NO Go to step 12.
YES The 2104 is configured in single SCSI bus mode. Go to step 2.
Step 2. (from step 1)
Is the 2104 attached to a second SCSI attachment?
NO
a. Ensure that the SCSI address of the SCSI attachment is set to 7.
b. Go to step 3.
YES
a. Ensure that the SCSI address of one SCSI attachment is set to 7.
b. Ensure that the SCSI address of the second SCSI attachment is
set to 6.
c. Go to step 3.
Step 3. (from step 2)
Does the 2104 have two SCSI interface card assemblies?
NO Go to step 4.
YES
a. Remove one of the SCSI interface card assemblies (see SCSI
Interface Card Assemblyon page 97).
b. Go to step 4.
Step 4. (from step 3)
a. Note the positions of all the disk drive modules and dummy disk drive
modules so that you can reinstall the modules into their correct slots later.
b. Go to step 5.
Step 5. (from step 4)
a. Remove all the disk drive modules, except for one (see Disk Drive
Modules and Dummy Disk Drive Moduleson page 75).
b. Go to step 6 on page 60.
Chapter 2. Problem Determination Procedures 59