Escapement Failures - IBM 29 CARD PUNCH Maintenance Manual

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A . Alphabetic Duplicate
switch off. kev duo
.
,
,
(
olphobetic and blank
)
Extra column or ot wrong time
Check 12 program contact
and circuit
Check dup reloy retup
Check P I cam contact
Check escape circuit
to interposer selection
flowchart (Figure 1-7)
0. Numeric
Duplicate
and Skip
Yer
auto dup 011 I 2 digits,
Perform B ond C
Check dup relays
a
Check dup circuits
-
N o trouble found, go
( - 1
to interposer selection
flowchart (Figure 1-7)
Too far
N o
Yer (nicked
or
torn holer)
Check retup of IBC
-
Yes
I
Check ercope circuit
I
N o
to interpmer selection
flowchort (Figure 1-7)
Perform A and C
C
Check escapement
interlock relay
Check P I cam contact
Check that punch
interposer is
engaging bail
I
Figure 1-8. Escapement Failures (Part 1 of 2)
Check
0
pragrom cantoct
Check auto rkip/dup
switch
Check dup reloy
I
I
Check PI timing and
duration
Check 12 program contoct
Check punch clutch
Check escape interlock
relay
Check dup relor
Check dup circuit

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