IBM 29 Card Punch Field Engineering Maintenance Manual page 8

Section 1. Reference Data
Figure 1-1 shows machine characteristics for the IBM 29
Card Punch.
1.1 OPERATIONS
The 29 Card Punch operations maybe divided, as shown in
Figure 1-2, for troubleshooting. These operationsare:
1. Start and Run: Establishment of power (electrical and
mechanical) necessary for machine operations. This
includes the operation of the card feed and the
pick-and-hold of the card lever relay.
2. Interposer Selection: Engagement of an interposer or
interposers with the punch bail in preparation for
punching.
3. Escapement: Advancement of the program drum and of
the escapement-driven feed wheels.
Characteristics Description
Speed: Without Print With Print
Manual punching 20 col/sec 18 col/sec
Manual duplication 10 col/sec 9 col/sec
Automatic duplication 20 col/sec 18 col/sec
Skipping 80 col/sec
Releasing 80 col/sec
Feed from pre-register to detail 0.250 sec
station
Hopper 500 cards
Stacker 500 cards
Figure 1-1. Characteristics
A
Start and Run
Card Lever Relay
a] EI 5
Interposer Escapement Punch Drive
Selection Unit Cycles
4]
Card Transport
Figure 1-2. Operations
Chapter 1. Reference Data and Service Aids
4. Card Transport: Mechanical control of the movement of
the card through the machine.
5. Punch Drive Cycle: Controlled rotation of the punch
drive unit index shaft. According to the function,this is
required to puncha hole in the card at the punchstation
or to read a hole in the card at the pin-sense station.
1.2 SEQUENCE OF OPERATIONS
It is essential that the customer engineer be aware of the
correct sequence of operations as they are used in any
machine function.
1.2.1 Functions
When the function is to punch a character from the
keyboard, the sequence of operationsis:
Start and run
Interposer selection
Escapement
Card transport
Punch drive cycle
Using the numbersonly, the sequenceis:
1
2
3-4
5
Showing escapementand card transport (3-4) side by side
indicates that while 3 causes 4, they occur at the same time.
Using this notation, the sequence of these operationsforall
of the functions of the 29 Card Punch is shown in Figure
1-3.
The functions shown in Figure 1-3 are the responses of
the machine to the inputs shown here:
Key Punch Press any character.
Multiple Punch Press the multiple punch key and any
numeric key.
Key Skip Press the skip key in numeric or alpha-
betic shift.
Press the duplicate key for one or more
columns with no programming.
Manual Duplicate
Blank Column Manual
Duplicate
Press the duplicate key for one or more
blank columns with no programming
and with the machinein alphabetic shift.
Pressing the duplicate key or the reading
of a "0" in the program card in a
column followed by "12's" in the
program card.
Auto Duplicate
Blank Column Auto
Duplicate
Sameas "Auto Duplicate" but for blank
columns with the machinein alpha-
betic shift.
Skip: Release, Auto, Press release key if starwheels are up or
Drum if they are down in a columnpro-
grammed "12". An "11" in a program
card. Card-to-card skip.
Release, Auto Space Press release key in a nonprogrammed
field but with the starwheels down.
29FEMM (4/69) 1-1