IBM 5100 - Page 96

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DISPLAY MAP
PAGE 4 OF 10
030
-Remove the J2 card.
-Probe
J2-J05 and J2-P04 again.
Are both lights on for all probe point!i?
Y N
031
-Remove the A2 card.
-Probe
J2-J05 and J2-P04 again.
Are both lights on for all probe points?
Y N
032
Defective F2 (base I/O) card.
Defective
G2 (controller) card.
033
Defective A2 (I/O cable driver) card ano
cable assembly.
034
Defective J2 (display) card.
035
-Remove the A2 (I/O cable driver) card.
Within 10 seconds after RESTART is pressed,
the following events should occur:
1. ABCDEFGH Appears on the top line of the 5
inch display.
2. ABCDEFGHI Appears on the top line.
3. The top line is blanked and either LOAD 0 or
CLEAR WS appears on the display.
Do all three events listed above OCCllr in
sequence after RESTART is pressed?
Y N
4 4
P Q
K L P 0
3 344
MAP 0500-4
036
-Reinstall A2.
Defective
F2 (base I/O) card.
Defective G2 (controller) card,
Defective
J2 (display) card.
Defective display assembly.
Check/ replace display and control panel
cable (refer
to 210, 241).
037
Defective A2 (I/O cable driver) card and
cable assembly.
038
Defective J2 (display) card.
Defective
F2 (base I/O) card.
Defective G2 (controller) card.
039
-Switch the RUN switch under the covers to not
run.
-Observe the 5 inch display.
-Switch the DISPLAY REGISTERS switch
to
NORMAL then back to DISPLAY REGISTERS.
Is
the video different in DISPLAY REGISTER$
than in NORMAL?
Y N
040
-Switch the RUN switch under the covers to
run.
-Probe
J2-B06 (-hex)
With the switch in DISPLAY REGISTERS,
the DOWN light should be on.
In NORMAL,
the UP light should be on.
Are the probe indications correct?
Y N
555
R S T
28SEP76 PN 1608389
EC 829670 PEC 828851
MAP 0500·.,4
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