Interposer Selection Failures - IBM 29 CARD PUNCH Maintenance Manual

and olphobatic
character keys
Check interposer relotch
a
Check keyboard restore
N o
selected
Check interposer relotch
Check interpan magnet
Check pin-sere contoch
v
Check cornmar bar
=?
Check throot plates and
Check inkrpoler
Check k e y b o d shift ckt
w
Check for mopat impulse.
I f no ~ u l r e , proceed
to
Check k y b o r d contoch
1
Check m t o r e circuit
a
Check pin-tare contoch
+
Check r m i n g pin
=7
Check c o d regirtrotion
Figure 1-7. Interposer Selection Failures
29 FEMM (4169) 1-5