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IBM 3420 Tape Drive (cant'd)
Tape Thraads Successfully But Fails to Load in Columns
Check for missing BOT marker, or incorrect leader le.ngth (distance from tape end to
BOT marker). Tapes with more than 3O-foot (9m) leaders may not load reliably. If
neither condition is present, notify CEo .
Window Fails to Open After Unload Operation
1.
Open
access
door and manually wind remaining tape onto file reel.
2.
Close front door and press RESET and UNLOAD.
3.
Notify CEo
Channel Fails to Select Tape Unit (Device Switching or Two-Channel Switch Feature
Installed)
Check that toggle switches on the appropriate 3803 operator's panel are set to enable
selection of the desired tape control and tape unit. (Refer to Subsystem Description-
IBM 380313420 Magnetic rape Subsystems, order number GA32-{)()21, for a descrip-
tion of switch functions.)
Page
5-38
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