IBM 5100 Maintenance Analysis Procedures page 78

N P R
333
028
PROCESS CHECK MAP
PAGE 4 OF 17
Defective A2 (I/O cable driver) card and
cable assembly.
Defective I/O cable terminator in the
auxiliary tape.
Check/replace I/O cables
(refer to 208 and 580).
029
Defective A2 (I/O cable driver) card and cable
assembly.
Defective 5103 B1A2 (adapter) card.
Check/replace I/O cables.
030
(Entry Point J)
-Remove the 82 (expansion feature) card if there
is one.
-Probe F2-G06.
Is the DOWN light on?
V N
031
-Reinstall A2 .
Defective 82 (expansion feature) card.
032
-Probe F2-G06 and remove the following cards
one at at time until the DOWN light goes off.
E2 (ROS Adapter) card.
F2 (base I/O) card.
G2 (controlrer) card.
H2 (I/O And diag) card.
The last card removed is defective.
-Reinstall the other cards that were removed.
-Switch the RUN switch under the covers to run,
K l
2 2
033
MAP 0420-4
-Remove the H2 (I/O and diag) card.
-Probe H2-B10.
Is theOOWN light on?
V N
034
Defective HZ
(I/O
and diag) card.
035
Defective RESTART switch.
Check/replace display and control panel cable
(refer to 210, 241).
036
(Entry Point F)
-Probe the bus out lines below. Record the
results.
F2-G05
F2-G09
F2-Gl0
F2-G12
F2-J05
F2-J09
F2-Jl0
F2-M04
F2-M07.
Are both lights off for any of the probe
points?
V N
037
For the next several steps all of the bus out
lines above are the probe points.
Are an odd number of the probe points
DOWN?
V N
555
STU
28SEP76 PN 1608388
EC 829670 PEe 829523
MAP 0420-4
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