IBM 5100 Maintenance Analysis Procedures

D E
1 1
POWER MAP
PAGE 2 OF
011
Defective power slAPply.
•••••••••••
* CAUTION·
•••••••••••
Refer to 271, power supply removal ~nd
replacement.
012
-Disconnect the ac power plug J 1 at the ac
power box
(refer
to 273).
Does fuse F1 blow now?
Y N
013
Defective tape motor assembly (refer to 202).
014
-Disconnect the fan ac plug J2 at the ae power
box
(refer
to 273).
Does
fuse F1 blow now?
Y N
015
Defective fan assembly.
016
-Check for a short or loose .connection in the ac
power box
(refer
to 273).
A
1
017
MAP 07()()...2
-Calibrate the CE meter (refer to 270).
.... , "I.
-Measure the following loaded voltages at the A1
board:
-Record the pin location
of any voltages that are
out
of tolerance
(refer
to 272).
+5 vdc A1-D13 .
+8.5 vdc C1-C11 .
+ 12 vdc C1-D13.
-12 vdc C1-E13 .
Are all voltages within tolefance?
Y N
018
-Power down.
-Disconnect any auxiliary I/O cables
(refer to 281).
-Disconnect the dc power cable at
Y1
(refer to 209.)
-Power up.
-Measure the unloaded voltages at the dc
power cable
(refer
to 272).
Are all voltages within tolerance?
Y N
019
Is there any voltage present?
Y N
020
-Power down.
-Exchange the power supply connector
J1 with the fan connector, J2
(refer to 273).
-Power up.
Wait 30 seconds.
Is the fan running now?
Y N
5 3 3 3.3
F G H J K
12DEC75
PN 1608392.
EC 829523 PEC 828851
MAP 0700-2
c

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)