IBM 5100 User Manual

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222 FORWARD AND REVERSE SELECT MAGNETS
(Page 3 of 3)
Run the following test to checkout the tape unit
adjustments:
Insert a known good scratch tape cartridge in
the 5100
and mark 140.1 K files starting at file one using the
following table. (This destroys the contents
of the
tape.)
If an ALREADY MARKED (APL) or ERROR 150
(BASIC) message appears, press tl1e ATTN !.<ey, scroll
up one line, enter
Go., and press the EXECUTE key.
·'.nternal Tape Unit
To mark a tape using APL, enter:
)MARK 1 140 1 Press the EXECUTE key
After the tape is marked, enter:
) Lo.AD 1 M
Press the EXECUTE key
To mark a tape using BASIC, enter:
MARK 1 1401 Press the EXECUTE key
After the tape is marked, enter:
Lo.AD 1
Press the EXECUTE key
Watch the tape motion and listen
to the drive. The tape
should stop momentarily at
each header. A correctly
adjusted drive will result in a rhythmic operation.
Read
failures will cause retries and result in a broken rhythm
or halt.
If this occurs, the select magnet service ~heck
should be done again. If the service check is o.K, run
the tape read/write diagnostics.
2-24
An INVALID FilE ERRo.R(APl) or an ERROR 121
(BASIC) might occur as file 1 . (all the tape on tl1e right
spool) tries to load. This is O.K. Continue with the
checkout using the tape diagnostics.
5106 Auxiliary Tape
Unit
To mark a tape using APL, enter:
)MARK 1
1401 2 Press the EXECUTE key
After the tape
is marked, enter:
)Lo.AD
2001 M Press the EXECUTE key
To mark a tape using BASIC, enter:
MARK 1 140 1 E40 Press the EXECUTE key
After the tape is marked, enter:
Lo.AD, E40
Press the EXECUTE key
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IBM 5100 Specifications

General

Release Year	1975
RAM	16 KB - 64 KB
Storage	204 KB tape drive
Display	5-inch CRT
Operating System	APL/BASIC
Processor	IBM PALM (1.9 MHz)