IBM 5100 Maintenance Analysis Procedures page 115
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- Maintenance information manual (389 pages) ,
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H J K
222
021
POWER MAP
PAGE
3 OF
5
Check/ replace the cables in the ac power
box.
(refer to 273).
022
Are the voltages present now?
Y N
023
Defective powei' supply.
***********
*
CAUTION
*
***********
Refer to 271, power supply removal and
replacement.
024
A cable was unseated or had an open
connection. Inspect for loose connections.
025
Defective power supply.
***********
*
CAUTION
*
***********
Refer
to
271,
power
supply
removal
and
replacement.
G
2
MAP 0700-3
026
(Entry Point B)
-Power down.
-Connect the dc cable back into socket Y1 .
-Disconnect a" the cables to the A 1 board except
the dc power cable.
-Power up.
-Measure one of the out of tolerance voltages
recorded above for the next several steps.
Does fuse F1 blow or does power drop?
Y N
027
Is the measured voltage out of tolerance
now?
Y N
028
-Connect the Z4 (keyboard) cable.
Is the measured voltage out of tolerance
now?
Y N
029
-Connect the Z2 (tape) cable.
Is the
measured
voltage
out of
tolerance now?
Y N
030
-Connect the Z3 (display and control
panel) cable.
Is the measured voltage out of
tolerance now?
Y N
12DEC75
PN 1608392
EC 829523
PEC 828851
5 5 5 444
L M N P Q R
MAP 0700-3
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