IBM 3590 - Manual (Page 109)

v The tape (see item 4 ) was wound completely out of the cartridge (see
item
1 ) onto the machine reel (not shown). It was then reattached to the
cartridge reel (not shown) by the service representative. This repair is
temporary and permits the cartridge to be loaded one time. This allows the
data to be copied to a replacement cartridge.
v The file-protect selector (see item 5 ) is damaged.
v The braking mechanism (not shown) is jammed or broken.
v The cartridge has other obvious damage.
Cartridge Quality and Library Maintenance
The IBM tape cartridge provides high performance and reliability with IBM
magnetic tape cartridge drives when the cartridge is properly handled and
stored. As discussed previously, repeated handling or inadvertent mishandling
can damage the physical parts of the cartridge and make it unusable.
The magnetic tape inside the cartridge is made of highly durable materials.
However, the tape wears after repeated cycles in the tape subsystem.
Eventually, such wear can cause an increase in tape errors.
Track the error data available by monitoring both the cartridge and cartridge
library performance. By monitoring error data, you can identify and replace
cartridges that are no longer acceptable for continued use.
Proper maintenance of your cartridge library helps to keep IBM magnetic tape
cartridge systems operating in a reliable and efficient manner.
Tape Supplies
We recommend that you keep the supplies listed in Table 31, or their
equivalents, to maintain your cartridges.
Table 31. Cartridge Maintenance
Part Number Description
05H4868
Leader Block Replacement Kit. This kit contains the necessary
tools to reattach the leader block to the tape. It does not
include leaderblocks.
05H3869
Quantity of 10 Leader Blocks for the 3590 High Performance
Cartridge Tape.
34L2666
Quantity of 10 Leader Blocks for the 3590 Extended High
Performance Cartridge Tape.
2108930 Lint-free cloth
13F5647 IBM Tape Unit Cleaner
Chapter 8. Cartridge Care and Handling 89