Table of Contents
Advertisement
22 Troubleshooting and Fault Clearing Procedures
Table 3-A Continued
Summary of Fault Symptoms and Potential Solutions
SYMPTOMS
CARTRIDGE TAPE UNIT FAULTS
With the power on, the liquid
crystal display on a Primary
Processor SRU displays the
message: "Could Not Reset
Tape."
With the power on, the liquid
crystal display on a Primary
Processor SRU displays the
message "Could Not Read
Tape".
Practice 450-1011-501
PROBABLE CAUSES
There is a cabling fault
between the Primary
Processor SRU and the SRU
providing the cartridge tape
drive used for loading system.
programs and data. (This may
be an 80-megabyte Mass
Storage SRU or a Cartridge
Tape SRU.)
The SRU used for loading
system programs and data is
defective.
The read/write heads of the
tape unit are dirty.
The tape cartridge has no
header/IPL file.
Here is a cabling fault
between the Primary
Processor SRU and the SRU
with the cartridge tape drive
used to load system programs connected.
and data.
There is a power fault.
The Primary Processor SRU
or SRU equipped with the
cartridge tape unit used for
loading system programs and
data is improperly seated.
CORRECTIVE ACTIONS
Power the system down.
Check that the cable is free of
shorts, open or broken wires, and
bent pins. Ensure that it is securely
connected
Power the system down and
replace the defective SRU.
Clean the read/write heads.
Install a tape with the header/IPL
file.
Power the system down.
Check that the cable is free of
shorts, open or broken wires, and
bent pins. Ensure that it is securely
Clear the power fault as described
under Power Faults (above) and
restart the load from tape.
Power the system down, remove
the suspected SRUs, and check
each one for bent pins or other
visible faults. When reinserting the
SRUs, ensure that they are securely
seated. Reattach the cables linking
them, and restart the data load from
tape
Advertisement
Table of Contents
