Product data
MAP 2022: 2104 – Power-On
This MAP helps you to isolate FRUs that are causing a power problem on a 2104.
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 1 in MAP 2010: 2104 – START)
a. Remove both fan-and-power-supply assemblies, if two are present. If your
2104 has only one fan-and-power supply assembly, remove also the fan
assembly (see “Fan-and-Power-Supply Assemblies” on page 89 and “Fan
Assembly” on page 94).
b. Remove the SCSI interface card assemblies (see “SCSI Interface Card
Assembly” on page 97). If your 2104 has only one SCSI interface card
assembly, you do not need to remove the dummy assembly.
c. Remove the switch card assembly (see “Switch Card Assembly” on
page 102).
d. Disconnect all the disk drive modules from the backplane. To do this
action, open the handle on each module (see “Disk Drive Modules and
Dummy Disk Drive Modules” on page 75). You do not need to completely
remove the disk drive modules.
e. Go to step 2 on page 53.
52 2104 Service Guide