IBM 5100 User Manual

Routine
Number Description
E"or Code
Meaning
TR47 Checks the read data line to determine if it will go both 0947 All 1's or O's read from tape
-active and inactive. The program generates 10 read clocks control card.
on the tape cOhtrol card
and reads the data associated with
th~se read clocks .. There must be at least one 0 bit and one
t bit read for this test to pass. A stuck bit causes all1's or.
all O's to be 'read.
TR051
1
Moves tape forward for two seconds. 0970 BOT or EaT was found; use
TR051 or TR052 routines to
reposition the tape.
TR052
1
Moves tape backward for two seconds.
TR06P,
Checks the beginning (BOT) and end (EOn of tape status
0954 Neither BOT nor
EaT status
indicators. The tape is moved past the single BOT holes and is active.
the double
BOT/EaT holes.
If the test fails, the tape stops immediately.
0957
EaT status is not active.
0958 EaT status cannot be
cleared.
0960 BOT status is
not active.
0963
The load point hole (BOT
status) cannot be found (refer
to 229 for load point hole).
0966
BOT status cannot be
CAUTION
cleared.
If an error occurs and the test is retried, the tape might 'go
off the end of the reel.
TR73
2
Tests the tape speed to determine if the motor speed is 0973 Tape speed not close to 40
correct. The program rewinds the tape to the first set of inches per second.
double holes and counts the time. When the load point hold
is found, the time is compared.
TR95 Remove the tape cartridge from the tape unit and attach a
0995 The data returned was
jumper between tape control card pin U06
(-write enable) incorrect.
and pin U08 (gnd). Wraps data through the base I/O card
and tape control card.
0996
Indicates
that TR95 ran and
can be rerun by pressing
EXECUTE.
'If a 970 error results from the EOT hole t?eing in front of the tape mirror, manually move the tape to reposition the EOT hole.
2Looping on this test can cause a process check.
3-44
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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)

Summary

Preface

CE Safety Practices

General Considerations

Safety precautions for working with IBM equipment, general guidelines.

Rescue Breathing for Adults

Step-by-step instructions for administering rescue breathing to adults.

Using the IBM 5100 Portable Computer Maintenance Library

5100 Maintenance Library Overview

Description of the 5100 maintenance library components including MAPs, MIMs, logics, catalogs, and tools.

MAPs

MAP Organization

Flowchart and explanation of how MAPs are structured and used for troubleshooting.

Using the MAPs

Instructions on how to read and follow MAPs, including sequences and probing.

MAP Example

Illustration and explanation of a sample MAP process, including entry/exit points and references.

Maintenance Information Manual

Maintenance

Details on location drawings and procedures for repairing or replacing FRUs.

Diagnostic Aids

Information on diagnostic programs, halt codes, and error conditions.

Theory

Descriptions of functional units and features, including a system overview.

Circuits

Information on card plug charts, signal cable charts, and logic diagrams.

Language Support

Reference material for determining causes of programming problems.

Appendix

Installation procedures and additional maintenance information.

Abbreviations and Glossary

Definitions of terms and abbreviations used in the manual and MAPs.

Index

A detailed listing of all topics within the maintenance information manual.