Multiple Punches; Damaged Cards Or Jams In Feed; Stacker; Faulty Stacking - IBM 1402 Reference Manual

HOPPER CLC (R-21)
NOT THROAT CLC (NOT R-22)
PUNCH CYCLE (PL-7)
DIE CL DELAY (R-26)
PUNCH CYCLE (PL-7)
THROAT CL DELAY (R-25)
NOT DIE CL
PUNCH CYCLE (PL-7)
NOT STACKER INH
NOT STACKER CL
Figure 6-5. Punch-Stop Data Flow
2. Incorrect clearance between lower side of punch
magnet armature and its latch. Clearance should
be .005" to .010".
3. Incorrect punch magnet armature pivot rod clear-
ance. Clearance should be .001" to .008".
4. Bent or loose punch magnet armature leaf springs.
5. Dislocated miniature punch magnet connector
terminals.
6. PACB's 1 and 2, 3 and 4, and 5 through 8.
6-6
Multiple Punches
CAUSES
1. Clearance between lower side of punch magnet
armature and latch. Check for at least .005".
2. Broken latch springs or latch spring hooks.
s.
PACB 3 and 4, and 11 and 12.
Damaged Cards or Jams in Feed
1. Loose or damaged timing belts.
2. Incorrect timing of first stepped feed roll. This
causes card to be nicked on leading edge of
punched hole.
s.
Incorrect punch unit timing. This causes torn or
long holes.
Stacker
Faulty Stacking
CAUSES
1. Radial guides and pocket separator plates with
rough finish that restrict cards from dropping cor-
rectly. The finish, if rough, should be smoothed
in the direction of card movement. Use crocus
cloth 450319.
2. Deformed radial guides. Remove and shape
guide to correct profile. See Figure 3-41.
Card Jamming, Transport Area
CAUSES
1. Worn or hardened black neoprene rolls.
2. Uneven pressure roll tension. Tensions must be
equal on both ends of transport roll, or cards will
skew.