IBM 5100 Manual

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IBM 5100
Maintenance Analysis Procedures
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Second Edition (March 1976)
Changes are continually made to the specifications herein. This manual is under EC
control and will be updated with each engineering change applied to the machine this
manual accompanies.
Do
not USI;l this manual to service other machines as they can have features nqt included
in
this manual, or they can be at a different EC Il;lve!.
©Copyright International Business Machines Corporation 19J5, 1976
PN 1608314
EC 829670
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Logic Card Part Numbers
USING
THE IBM 5100 PORTABLE COMPUTeR
MAINTENANCE LIBRARY.
MAPs.
MAP Organization
Start MAP
Bring
Up and Process Check MAPs
IBM
5100 Portable Computer Device MAPs.
C IBM 5103 Printer Device MAPs
IBM 5106
Auxiliary Tape Unit Device MAPs
MOl MAPs
Machine Checkout
Using
the MAPs
MAP Examples
Start MAP
Tape
Read MAP.
Bring Up MAP
Process Check MAP .
Display
MAP
TV Monitor MAP
Keyboard
MAP
Power MAP
5103 Printer MAP
Communications/Serial
I/O MAP
(
Auxiliary Tape MAP
Machine Checkout MAP
RPO Features Reference
(
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' 050·0
100·1
100·1
100·1
100·1
100·1
100·1
100·1
100·1
100·1
100·1
100·2
100·3
0200·1
0300·1
0400·1
0420·1
0500·1
0510·1
0600·1
0700·1
0810·1
0830·1
0850·1
0900.'
.1 0950 •1
PN 24511a4
EC 829670
Contents
iii
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Logic Card Part Numbers
Part
Name Location PN
I/O cable driver assembly
A2 1608491
Expansion feature B2 16069961
16070042
APL ROS3 C2 1607114
BASIC
ROS C4
1606960
APL ROS 1
02 1606990
APL ROS 2 04
1606986
ROS adapter E2 1607132
16069644
Base I/O
F2 16070004
16069984
16071224
Controller G2 6569905
16071185
I/O and diagnostic H2 16071126
16071266
APL supervisor H4 1607110
Display J2
656942.
1607120
R/W
storage K2·N4 82355493
82383273
Board, A1
-1608552
Tape control -8527645
Auxiliary tape adapter -16069884
16071344
5103 printer adapter -1607002
5103 printer adapter -1607124
1Part 1606996 has Communications Adapter and Serial I/O Adapter LQgic.
2Part 1607004 has Communications Adapter Logic only.
Card EC
Date
829518
829487
829506
829537
828835
828934
828883
829623
828846
829489
829488
829558
828800
829547
829535
829571
829531
~
825550
829554
553353
553802
829494
825629
828912
829653
829492
829560
3Part 8235549 and Part 8238327 are logically the same and can be intermixed on the same 5100 system.
4These logic cards are interchangeable, within the given location.
S For replacement purposes, use Part 1607118.
6
Use
1607126 when a '20 cps 5103 printer is attached.
PN 2451194
EC 829670
28
SEP 76
Description
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Relocated parts on the cC!rd
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Relocated parts on the card
-
-
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80 cps 5103
120
cps 5103
...
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The IBM 5100 Portable Computer Maintenance Library
consists
of MAPs (maintenance analysis procedures). a
maintenance information manual, and parts catalog.
The MAPs and the maintenance information manual are
unique maintenance documents and are, therefore, covered
in this description.
The MAPs are EC controlled and will be updated as necessary
to provide you with the latest information possible to diag-
nose 5100 Portable
Computer problems. The maintenance
information manual will be updated simultaneously with
the MAPs using TN Ls and revisions. It is important that the
MAPs and maintenance information be at compatible levels.
MAPs
The MAPs guide you through the service call using step-by-
step procedures that require you to follow trace lines when
responding to questions or when leaving or entering a page.
The MAPs use a logical approach for isolating the possible
causes
of machine problems and point you to that part of
the 5100 Portable Computer that requires adjustment or re-
placement.
Two types of MAPs are used in the IBM 5100 Portable Com-
puter Maintenance Library. First, there are the hard copy
(printed) MAPs within the MLM binder. These MAPs are
contained in a separate removable binder.
The second type is MOl (maintenance and diagnostics
integrated)
and is located on the diagnostic tape cartridge.
These MAPs are
shown on the display screen. Paging through
these MAPs is accomplished automatically when you respond
to the questions on the display.
MAP
ORGANIZATION
Start MAP
This
is the starting point for each service call. From here you
will be guided to the failing FRU (field replaceable unit) in
the 5100 Portable Computer or to other MAPs that further
identify the problem.
Using the IBM 5100 Portable Computer
Maintenance Library
Bring Up and Process Check MAPs
The start MAP sends you to the bring up or process check
MAPs
when the 5100 Portable Computer fails to become
REAOY or when the PROCESS CHECK light is on. Control
unit failures are generally found by these MAPs.
IBM
5100 Portable Computer Device MAPs
These MAPs find failures in
the 5100 Portable Computer
basic devices. When a failure occurs in the keyboard, dis-
play,
tape, or power supply, the start MAP sends you
directly to that device MAP to find the failing FRU.
When multiple symptoms are present and the PROCESS
CHECK light
is one of them, always give priority to the
PROCESS CHECK light.
IBM 5103 Printer Device MAPs
These MAPs provide
instructions on how to load the MOl for
the printer. The start MAP directs you to this MAP.
IBM 5106 Auxiliary Tape Unit Device MAPs
These MAPs provide
instructions on how to load the MOl for
the auxiliary tape unit. The start MAP directs you here.
MOl MAPs
MOl MAPs are read from the display screen. These MAPs
can be used
only when the 5100 Portable Computer basic
functions are operational. The 5100 features (printer,
communications adapter/serial I/O adapter, and auxiliary
tape) and the tape write function use this MAP technique.
A description of MOl and how to use it is found in the
Diagnostic Aids section._
Machine
Checkout
The start MAP directs you to the machine checkout MAP to
further define 5100 Portable Computer failures. Once the
failure is isolated, you are directed to other MAPs to locate
the failing FRU.
PN 1608314
EC 829670
Using the IBM 5100 Maintenance Library 100-1

USING THE MAPS
When using
the MAPs, you must:
READ CAREFULLY.
The MAPs can help you find the
problem only if you follow instructions and an!iwer
questions accurately.
FOI,.LQWTHE
SE~UENCE. Proceed step-by-step at all
times.
At times, the MAP instructipns might seem irrelevant.
However,
they can be important in determining the correct
error indications.
FOLLOW INSTRUCTIONS. Instru<,ltions must be carried
out exactly in the order given. Ouestions are based on in-
structions immediately preceding the questions, Do not
change the conditions established by the instructions before
answering
the questions.
100.2
PN 1608314
EC 829670
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MAP EXAMPLES
KEYBOARD MAP 0600
PAGE 10F 8
ENTRY POINTS
FROM I ENTER THIS MAP
-------+----------------------
MAP I ENTRY
NUMBER I POINT
PAGE
NUMBER
STEP
NUMBER
-------+----------------------
0200
0300
0845
0900
A
A
A
A
001
001
001
001
MAP name and numb"r-referenced from start MAP,
Entry and exit points-shows all entry and exit points to and
from this
MAP.
EXIT THIS MAP I TO
---------------+--------------
PAGE STEP I MAP ENTRY
NUMBER NUMBER I NUMBER POINT
---------------+--------------
8
2
081 I
006 I 0420 0700
A
A
001-------------------------------------
Step number
(Entry Point A)
Can you make the machine fail?
Y N
002
V-yes N-no
(Entry Point B) ------------------------- Entry point-indicates a possible starting point in this MAP.
Keyboard intermittent failures procedure
Perform the following actions. one on each
call
until the problem IS corrected
1 Clean the keyboard PC board
(refer to 2511
Reseat the keyboard cable at both ends
Date / / ------------------------- Date-indicates the last date you performed this step.
2 Replace the keyboard PC board
(refer to 2511
Date / /
3 Replace
the all keys assembly
(refer to 2511
Date / /
4. Replace
the F2 (base 1/01 card
Date / /
003
Is the PROCESS CHECK light on?
Y N
(\ 8 2
/ Co--------------------
Off page referenc;;ing-identifies the page and trace where
this
MAP leg continues.
PN 1608314
EC 829670 Using the IBM 5100 Maintenance
Library 100-3

PAGE
2 OF 8
Q04
-Calibrate the CE meter (refer to 270). - ....... ~----------
-For the probe pOints
(refer
to 204).
-MeasurEl .8.5 vdc and +5.0 vdc at the keyboard
PC board with referencEl to gnd on the A1 board.
Are pot., volt;lges in tolerance (+7.8 vdc to ________ _
+9.~ vdc) and (+~.6 vdc to +5.5 vdc;)?
Y N
005
-Me/lswe +8.5 vdc and +5.0 vdc at the A1
board.
(r~fer to 255)
Are both voltages in tolerance (+7.8 vdc to
t9.3 vdc) and 1+4.6 vdc to +5.5 vdc)?
Y N
006
G(l to MAP 0700, Entry Point A. -------_----
007
Go to Pa~ 5, Step 037, Entry Point C, --_---------
008
-Press the a key then the P key.
Did anything (P, Q, *, ?, invalid key, etc)
apPfl;lr on the display?
Y N
009
-Probe F2-S05 (-keyboard lockout). ____ ........ --------
(refer !o the appendix, the general /oglc
probe)
Is the l) P light on?
Y N
t10
Defective keyboard pc board (refer to 251).
Check/replace keyboard cable (refer to 255).
On page refenmcing-in(:Jicates the trace and Palle where
this MAP
leg came from.
Reference number-refers to a location graphicr
maintenance procedure, chart, and other pertinent information
in the maintenance section.
Question-answer either yes or no. Continue from yOIJr
answer to the next question or instruction.
External exit point-indicates the MAP and el1try point to aot/""
,~~
Internal exit point-indicates the page, step, and entry
point
to go to within this MAP.
Instruction-establishes conditions for answering the
next question.
Action-possible fixes for the failure, Replace, rl'lpair,
or adjust
in the order given.
Date-date of MAP release
Part number-MAP part number
Engineering change number-previous level
07JUL75 PN 160839;--- ~
~ __ Engineering change (lUmber-current level
EC 82B851 .......... ~PE~C:....:::.:.:.:.;..:=-...-- __ .-,...-
4 3
E F
100-4
MAP 0600-2 -----.-.---- MAP page number
PN1608314
EC829670

START MAP 0200
(
PAGE 1 OF 4
ENTRY POINTS
(
FROM
ENTER THIS MAP
MAP
ENTRY PAGE
STEP
NUMBER POINT NUMBER NUMBER
0300 A 001
(
0900 A
001
(
001
MAP 0200, Entry point A is on page 2.
(
"' .
./
(CONTINUED, NEXT COL)
COPYRIGHT IBM CORP 1975
MAP 0200-1
EXIT POINTS
EXIT THIS MAP
TO
PAGE
STEP MAP
ENTRY
NUMBER NUMBER NUMBER POINT
3
018
0300
B
3
014 0400 A
3 013 0400 D
3 016
0400
D
4 024
0420 A
4
019 0420 A
4
021 0420 A
4 022
0500 A
3 011 0500
A
4
020
0500 A
3
018 0500 A
3
018 0510 A
3
018 0600 A
3
018 0810 A
3
018 0830 A
3
018 0850 A
3
018 0900 A
28SEP76 PN 1608385
EC 829670 PEC a29523
MAP 0200-1
I

START MAP
PAGE 2 OF
4
(CONTINUED )
(Entry Point A)
-Record customer supplied information including
error codes,
if any.
Note: when the map l€lads to a defective card,
measure the voltages at the location before
replacing the card.
If any voltages are found to
be out of tolerance go tp map 0700 , entry
point A (refer
to 271).
-Place the 5100 in its service position (refer ,to
212).
-Set the BRIGHTNESS control
to the center 9f its
rang€l.
-Switch the L32-64-R32 switch to 64.
-Press the bottom
of the REVERSE DISPLAY
switch.
-Switch the DISPLAY REGISTERS switch
to
NORMAL.
-Check that the
RUN switch under the covers is
on
(refer to 200).
Is the problem associated with an installed
RPQ feature?
Y N
002
Is the PROCESS CHECK light on?
Y N
003
Do you think, the problem is too
intermittent for effective use of the
MAPs?
Y N
004
-Power up. Wait 30 seconds.
Or press RESTART.
Is the 5 inch display dark for all
positions of the BRIGHTNESS
control?
Y N
4 4 4 4 2
ABC 0 E
E
2
MAP 0200-2
005
To test the indicator lights:
-Press and hold the RESTART switch.
Are both the PROCESS CHECK light and the
IN PROCESS light on?
Y N
006
Defective H2 (I/O and diag) card.
Defective PROCESS CHECK light.
Defective IN PROCESS light.
Defective RESTART switch,
Check/ replace display and control panel cabl,e
(refer to 210, 241).
007
-Release the RESTART switch. Wait 10 seconds.
Is the PROCESS CHECK light «)I'l?
Y N
008
The 5 inch display raster is grossly distorted if
it is absent. is rolling, has a black rather
thl'lM
a white background, is greatly reduced i,n
size, is tilted, not centered, or departs
significantly from a rectangular shape
(as
viewed in the DISPLAY REGISTERS switch
position),
Is the 5 inch displl;ly raster grossly
distorted?
Y N
009
-Press RESTART. wait 10 seconds.
Did either LOAD 0 or CLEAR WS (with
no misspelling) appear on one arid only
one line of the 5 inch display?
Y N
4 4 3 3
F GHJ
28SI=P76 PN 1608385
EC 829670 PEe az9523
MAP 0200-2
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2
010
START MAP
PAGE 3
OF
4
-Switch the RUN switch under the covers to not
run.
(refer
to 200).
-Switch the DISPLAY REGISTERS switch to
DISPLAY REGISTERS.
Refer
to 248, hex registers display.
Do all 1024 positions contain legible,
well-formed, non-blank characters?
Y N
011
-Switch the DISPLAY REGISTERS switch to
NORMAL.
-Switch the RUN switch under the covers to
run.
Go to MAP 0500, Entry Point A.
012
Are all of the characters displayed hex
characters? (that is 0, 1, 2, 3, 4,5,6, 7, 8, 9, A,
B, C, 0, E or F.)
Y N
013
-Switch the RUN switch under the covers to
run.
Go to MAP 0400, Entry Point D.
014
-Switch the DISPLAY REGISTERS switch to
NORMAL.
-Switch the RUN switch under the covers to run.
Go to MAP 0400, Entry Point A.
H
2
MAP 0200~3
015
Are the top 13 lines of the display entirely
blank?
Y N
016
Go to MAP 0400, Entry Point D.
017
Is the PROCESS CHECK light on?
Y N
4
018
-Use the customer information recorded
earlier and the customer error chart
to
determine the probable failure area.
Exit
to the appropriate MAP:
-Internal Tape Unit
Go to MAP 0300, 'Entry Point B.
-Display
Go
to MAP 0500, Entry Point A.
-TV
Monitor
Go to MAP 0510, Entry Point A.
-Keyboard
Go to MAP 0600, Entry Point A.
-5103 Printer
Go
to MAP 0810, Entry Point A,
-Communications/Serial
I/O
Go to MAP 0830, Entry Point A.
-5106 Auxiliary Tape Unit
(CONTINUED, NEXT COL)
28SEP76 PN 1608385
EC 829670 PEC 829523
K MAP 0200-3

C 0 FG K START MAP
2 2 223
PAGE 4 OF 4
(CONTINUED)
Go to MAP 0850, Entry Point A.
~Otherwise go to the machine
check out MAP
Go to MAP 0900, Entry Point A.
019
Go to MAP 0420, Entry Point A.
020
Go
to MAP 0500, Entry Point A.
021
Go to MAP 0420. Entry Point A.
022
Go
to MAP 0500, Entry Point A.
023
Refer to the Intermittent Troubleshooting Guide
in the Diagnostic Aids section
of the 5100 MIM,
AB
2 2
024
MAP 02004
Go to MAP 0420. Entry PointA.
025
Go to the RPQ F~~turEl$ fleferf!I'lCe~ection (MAP
09EiO).
~8SEP76
PN 1608386
EC 829670 PEe 82~52~
MAP 020~4
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TAPE READ MAP
PAGE 1 OF 45
ENTRY POINTS
FROM
ENTER TH IS MAP
MAP
ENTRY PAGE STEP
NUMBER POINT
NUMBER NUMBER
0200
B 2 007
0860
A 1 001
0861
A 1 001
0900
A 1 001
001
(Entry Point AI
Is the PROCESS CHECK light on?
Y N
002
The tape read diagnostic program displays an
error on the display if an error is found. An
error
is displayed in the following format near
the
top of the display:
ERROR XXX E80 GOTO MAP 0300.
Is an error displayed?
Y N
4
542
ABC
COPYRIGHT IBM CORP 1975
MAP 0300-1
EXIT POINTS
EX IT THIS MAP
TO
PAGE
NUMBER
3
2
3
45
45
42
37
38
38
28
12
2
3
3
9
44
STEP
MAP ENTRY
NUMBER
NUMBER
POINT
022 0200 A
010 0420 A
014 0420 A
509
0420 A
507 0600 A
477 0700 A
413 0700 A
423 0700
A
429
0700 A
280 0700 A
111
0700
A
009
0900 A
013
0900 A
016
0900 A
082 0900 A
505 0900 A
28SEP76 PN 1608386
EC 829670 PEC 828851
MAP 0300-1

C
1 TAPE READ
MAP
PAGE 2 OF 45
003
The characters
DCP2 are displayed when the
tape read diagnostic is done.
Are the characters DCP2 displayed?
Y N
004
The instruction PRESS EXECUTE,R,OR L
might
be displayed near the bottom of the
display. Ignore this instruction if it is
displayed.
Are instructions (other than PRESS
EXECUTE,R,OR L) or questions displayed?
Y N
005
Please observe again for:
1. PROCESS CHECK Light on.
2. Error displayed.
3. Instructions or questions displayed.
Do
you have any of the above
conditions?
Y N
006
Have
you passed this step before?
Y N
3 333 2
DE F G H
H
2 MAP 0300-2
007
(Entry
Point B)
-If there is a cartridge in the tape drive, remove i~.
-Press RESTART and wait 10 seconds.
Use the keys
in the numeric key section of the
keybol;lrd (refer to 250 for the location of the
numeric key section).
-Hold CMO and press HOLD.
-Hold CMD and pres!! -(minus)
You have now loaded
DCP1 (diagnostic cOntrol
program
1. Refer to section 3,diagnostic aids).
If the DCP1 program load is ok, the char;:lcters
DCP1 are displayed.
Are the characters OCP1 displayed?
Y N
3
J
008
Is
the PROCESS CHECK light on?
Y N
009
Go to MAP 0900, Entry Point A.
010
Go to MAP 0420, Entry Point A.
28SEP76 PN 1608386
EC 829670 PEC 828851
MAP 0300-2
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2
011
TAPE READ MAP
PAGE 3 OF
45
Use the keys in the numeric key section.
-Hold CMD and press * (BASIC multiply key).
OR
-Hold CMD and press x (APL mUltiply key).
You have now put the DCP1 program In
diagnostic mode.
If the diagnostic mode load IS ok, the characters
DIAG DCP1 are displayed (refer to section 3,
diagnostic aids).
Are the characters DIAG DCP1 displayed?
V N
012
Is the PROCESS CHECK light on?
V N
013
Go to MAP 0900, Entry Point A.
014
Go to MAP 0420, Entry Point A.
015
Use the keys In the numeric key section.
-Press C
-Hold CMD and press 1
-Press EXECUTE
You have loaded and are
running the tape read
diagnostic (refer to section 3, diagnostic aids).
-Follow the instructions displayed to run the
diagnostic. If the PROCESS CHECK light comes
on or the characters DCP2 are displayed:
Go to Page 1, Step 001, Entry Point A.
o E F G
2 222
MAP 0300-3
016
Go to MAP 0900, Entry Point A,
017
Go to Page 1, Step 001, Entry Point A.
018
An error instruction is displayed In the
following format:
GOTO MAP 0300 ERROR XXX.
Is your answer to the displayed question
an error instruction?
V N
019
Do not press EXECUTE ,R ,or L unless
asked to.
Follow the instructions displayed
on this display.
NOTE:
After you follow the instructions on
this display another display might appear,
Ignore this next display.
Go to Page 1, Step 001, Entry Point A.
020
Go to Page 4, Step 024, Entry Point G.
021
Are you diagnosing an internal tape drive
problem?
V N
022
Go to MAP 0200, Entry Point A.
023
Run the tape write diagnostic program by
following the instructions displayed.
28SEP76
PN 1608386
EC 829670 PEC 828851
MAP 0300-3
•

B
1
024
(Entry Point G)
TAPE READ MAP
PAGe 4 OF 4p
These errors are valid only for the tape read
diagnostic program. Scan through the errprs
until you find the error that is displayed on the
display. Then take the Y leg to find the correct
page number.
Error 0017
Y N
025
Error 0027
Y N
026
Error 0037
Y N
027
Error 004?
Y N
028
Error 005?
Y N
44444
544 4 3 4
KL MNP Q
029
Error006?
YN
030
Error 007?
Y N
031
Error 0087
Y N
032
Error 0097
Y N
033
Error 0107
Y N
2aSEP76
4 4 4 4 4 EC 8~9Q70
3 3 3 3 3 5
R STU VW
MAP P~O()"4
PN 1608386
PI=C 828S~1
MAP 0300-4
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IN
4 TAPE READ
MAP
PAGE 5 OF 45
A
C
5
MAP 0300-5
034 039
Error 0117
Y N
035
Error 0127
Y N
036
Error 0137
Y N
037
Error 0147
Y N
038
Error 9017
Y N
4 4
4 4 4 3 2 5
3 3 3 AAA
XYZ ABC
Error 9037
Y N
040
Error 9067
Y N
041
Error 9077
Y N
042
Error 9097
Y N
043
Error 9127
Y N
28SEP76
44444
PN 1608386
2 2 1 1 0 6 EC 829670 PEC 828851
AAAAAA
o E F G H J MAP 0300-5

A
J
5
Error 9157
Y N
045
Error 9187
Y N
046
Error 9217
Y N
047
TAPE READ MAP
PAGE 6 OF 45
Error 924?
Y N
048
Error 9277
Y N
33333
9 6 5 546
AAAAAA
KL MNP Q
A
~
I
049
Error 9307
Y N
050
Error 9337
Y N
051
Error 9367
Y N
052
Error931?
Y N
053
Error 938?
Y N
3 3 3 3 2 28SEP76
.
MAP 0300-6
PI'! 1608386
3 2 1 a 9 7 EC 829670 PEe 828851
AAAAAA
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A
W
6
054
Error 9397
V N
055
Error 9407
V N
056
Error 9437
V N
057
TAPE READ MAP
PAGE 7 OF 45
Error 9467
V N
058
Error 9477
V N
22222
9 5 544 7
A A A B B B
XYZ ABC
B
C
7
059
Error 9487
V N
060
Error 9497
V N
061
Error 9507
V N
062
Error 951 7
V N
063
Error 9527
V N
28SEP76
2 2 2 1 1
PN 1608386
3 2 2 9 7 8 EC 829670 PEC 828851
B B B B B B
o E F G H J MAP 0300-7

B
J
7
064
Error 9537
V N
065
Error 9547
V N
066
Error 9577
V N
067
TAPE READ MAP
PAGE 8 OF 45
Error 9587
V N
068
Error 9607
V N
1 1 1 1 1
6 6 5 448
B B B B BB
KL MNP Q
B
~
I
069
Error 9637
V N
070
Error 9667
V N
071
Error 9707
V N
072
Error 9737
V N
073
Error 9827
V N
1 1 1 1 1 28SEP76
MAP 0300-8
PN 1608386
4 3 3 2 2 9 EC 829670 PEe 828851
B B BB B B
R STU VW MAP 0300-8
o
G