IBM H4S, Setup, Operator, And Service Manual

Page: 39 / 141

Chapter 3. Operating the Drive
Operating the drive involves using the following front panel items:
v Single-character Display (SCD)
v
SCD Dot
v Ready and Fault Status Lights
v Unload Button
Operating modes
The drive functions in the following modes:
v Operation mode - functions include reading and writing data, cartridge
manipulation, error reporting, and firmware updating using an FMR cartridge. For
more information, see “Status Lights” on page 3-2.
v
Maintenance mode - functions include drive diagnostic, creation/unmake FMR
cartridge, and drive dump manipulation (force to RAM, copy to tape, copy to flash
memory, and erase flash). For more information, see “Diagnostic and
Maintenance Functions” on page 3-7.
The Unload button is used to switch between modes. For more information, see
“Unload Button” on page 3-4.
Single-character Display (SCD)
The SCD (
4
in “Front panel of the drive” on page 1-2) presents a single-character
code for:
v Error conditions and informational messages
v
Diagnostic or maintenance functions (while in maintenance mode only)
Appendix A, “Error Codes and Messages,” on page A-1 lists the codes for error
conditions and informational messages. If multiple errors occur, the code with the
highest priority (represented by the lowest number) displays first. When the error is
corrected, the code with the next highest priority displays, and so on until no errors
remain.
“Diagnostic and Maintenance Functions” on page 3-7 lists the single-character
codes that represent diagnostic or maintenance functions. To initiate a function the
unit must be in maintenance mode.
The SCD is blank during normal operation.
SCD Dot
If a drive dump is present while the drive is in maintenance mode, a single red dot
illuminates in the lower right corner of the SCD (
8
). To copy the dump, see
“Function Code 5: Copy Drive Dump” on page 3-12.
The SCD Dot is on solid if the dump is in RAM memory. The SCD Dot flashes if the
dump is in FLASH memory.
The SCD Dot turns off when you obtain a dump (by using ITDT or a SCSI
command) or update the drive firmware.
© Copyright IBM Corp. 2007
3-1