Is The Up Light On7; Defective F2 (Base I/O) Card; Defective Tape Control Card (Refer To 202); Check/Replace The Tape Drive Cable (Refer To 202) - IBM 5100 Maintenance Analysis Procedures

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TAPE READ MAP
PAGE 18 OF 45
159
There might be foreign material in the
select magnet gaps (refer to 202).
Service check/adjust the jacks haft housing
(refer to 223).
Service check/ adjust the magnet gaps
(refer to 222).
Defective spindle-select arm assembly
(refer to 202).
160
Defective tape control card (refer to 202).
161
(Entry Point H)
-If you do not remember the answer to the next
question, press R and then C to try the test
again.
Did the tape reels move counterclockwise
(forward) rather than clockwise (reverse)?
Y N
162
-If you do not remember the answer to the
next question, press R and then C to try the
test again.
Did the tape reels move very slowly or
slow down after starting?
Y N
1 1
8 8
o
0
A B
163
You have indicated by your answers that
the tape reels moved clockwise for about 2
seconds. That is what should happen for
this test. You might not have an error.
-Retry the test (press R on the keyboard).
Go to Page 1, Step 001, Entry Point A.
o
0
A B
1 1
8 8
164
There might be foreign material in the select
magnet gaps (refer to 202).
165
(refer to the appendix, the general logic probe).
-Probe tape control card pin U04 (-forward) (refer
to 227).
-Leave the probe on the pin.
Is the DOWN light on 7
Y N
166
Defective tape control card (refer to 202).
167
-Remove the F2 (base I/O) card from the board.
Is the DOWN light on7
Y N
168
Is the UP light on7
Y N
169
Defective tape control card (refer to 202).
170
Defective F2 (base I/O) card.
171
Defective tape control card (refer to 202).
Check/replace the tape drive cable (refer to 202).
28SEP76 PN 1608386
EC 829670 PEC 828851
MAP 0300-18
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