IBM 1403 Reference Manual
Form
`7"1J-6443
-1
tamer Engineering
Reference
an«i
International
Business Machines Corp ration
Data Processing Division
112
East Post Road,
White Prins, N
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Printer
Printer
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Customer Engineering
Reference Manual
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Issued to•
Branch Office-
Department:
Address•
If this manual is mislaid, please
return it to the above address
Contents
PREVENTIVE MAINTENANCE
APPROACH TO PREVENTIVE MAINTENANCE
PREVENTIVE MAINTENANCE PROCEDURES
5
5
Chain to Type Array Reassembly
Lower Plate to Type Array Assembly
Adjust Magnetic Read Head
Magnetize Timing Disk
18
19
21
21
INSTALLATION PROCEDURE
HAMMER UNIT
21
Hammer Unit Removal
21
Base Installation
6
Position the Hammer Unit (Factory and Field) ....
21
Three-Phase Motor Rotation
6
Remove Hammer Magnet Assembly
22
Systems Check-Out
6
Individual Hammer Magnet Coil Replacement
22
Hammer Removal
22
REMOVALS AND ADJUSTMENTS
RIBBON UNIT
22
COVER REMOVAL
7
Remove Ribbon Drive Unit
22
Top Forms Guide
7
Position Ribbon Drive Unit
22
Front Cover
7
Adjust Ribbon Skew
24
Top Cover
7
Adjust Ribbon Shield and Print Line Indicator ....
24
Inner Front Cover
7
Remove Lower Ribbon and Brake Assembly
24
MANUAL CONTROLS — ADJUSTMENTS
7
Remove Upper Ribbon Drive and Brake Assembly ..
24
Horizontal Print Alignment Lever
Horizontal Print Alignment Vernier
Vertical Print Alignment Knob
7
7
7
Disassemble Ribbon Drive and Brake Assembly ...
Ribbon Clutch Adjustment — Out of Machine
Ribbon Drive Motor Positioning
25
25
25
Print Control Dial
7
HYDRAULIC UNIT
27
Forms Width Vernier
9
Hydraulic Unit Removal
27
Manual Clutch and Line-Selection Lever
10
Hydraulic Unit Replacement
28
FORMS POSITIONING
10
Hydraulic Unit Reservoir Removal
28
Tractor Shafts and Tractor Guide Bars
10
Remove Control Valve Assembly
28
Removal of Individual Pin Feed
12
Hydraulic Unit Reassembly
28
Forms Tractor Adjustments
12
Hydraulic Pump Drive Belt Tension
29
Position Upper and Lower Tractor Drive Shafts
Install Tractors
12
12
CARRIAGE CONTROLS
Space Control Magnets Adjustments
29
29
Replace Tractor Shafts and Guide Bars
Tractor Jam-Detection Device Adjustments
Forms Stacker Assembly Adjustment
13
13
13
Space Control Valves Adjustments
Skip Control Magnets Adjustments
Skip Control Valves Adjustments
30
31
31
BASE ADJUSTMENTS
13
Hydraulic Detent Stop Adjustments
31
Grounding of Forms Carts
13
Space Needle Valve Adjustments
31
Level Left Shock Mount
13
Skip Needle Valve Adjustment
Remove Translator Frame
13
(2-Speed Carriage Machines)
31
Position Translator Frame
14
Bypass Needle Valve Adjustments
32
Remove Movable Base
14
Single-Space Single-Shot Adjustments
32
Remove Movable Base Eccentric Shaft
14
Emitter Brush Adjustments
33
Adjust Movable Base
14
Carriage Tape Brushes ( Statically) Adjustments ....
33
Remove T-Casting
15
Carriage Tape Brushes (Dynamically) Adjustments 34
Replace T-Casting
15
Position T-Casting (Factory)
15
LOCATIONS AND VOLTAGE SPECIFICATIONS
Position T-Casting Horizontally (Field)
Position T-Casting Vertically (Field)
Adjust T-Casting Latch
16
16
16
Voltage
Voltage Variation
Serial Plate
36
36
36
TYPE ARRAY (Cartridge Assembly)
17
Ground
36
Type Array Removal
17
Connectors
36
Type Array Disassembly — Out of Machine
17
Resistors
36
Center and Upper Plate Reassembly —
Main-Line Switch
36
Flat Idler Spring
18
Convenience Outlets
36
Center and Upper Plate Reassembly —
Terminal Blocks
36
Coil Idler Spring
18
Thermistors
36
© 1960, 1961 by International Business Machines Corporation
~.
(
Preventive Maintenance
Approach to Preventive Maintenance
The prime objective of any maintenance activity is to provide maximum machine availability to the customer. Unless
a preventive maintenance operation reduces machine downtime, it is unnecessary.
Do not adjust or disassemble a unit that is working prop-
erly, even if tolerances vary from specifications.
Be visually alert for trouble indications any time you
service the machine. Look for corrosion, wear, cracks,
burned contacts, and loose connections. Watch for filters
clogged with dirt.
Preventive Maintenance Procedures
The three basic steps of preventive maintenance are clean,
lubricate, and inspect. Do not do more than scheduled preventive maintenance on equipment which is operating satisfactorily. Refer to Figure 1.
Apply lubrication only in the quantity necessary to
supply that immediate area involved.
Wipe off excess.
On
the 1403, special care must be taken to keep lubricants
away from:
Ribbon
Cover seals
Paper path
Rubber dampers
Electrical wiring
Grommets
Magnetic clutch disk
P M ROUTINE
CODE
UNIT
FREQ
(Weeks)
LUBRICATE
CLEAN
OBSERVE
5
DRIVE
Type Array
Type Array
Drive
4
Fill right oil reservoir in Tcasting 06.
Clean type array with vacuum
cleaner as required.
Check that reservoir never
runs dry. Check that oil is
being used (reaches chain).
Fill plastic oil reservoir at
rear of T-casting
0
9.
Check that reservoir never
runs dry. Check that oil is
being used.
2
PRINT
Ribbon
Toggle plate pivot
0
6.
Reverse toggle spring anchor
0
24. Skew roller pivot 06.
Sense finger pivot
0
6,
Excessive oil and grease must
be wiped from all areas to
prevent any contamination of
ribbon.
Check for wear.
5
DRIVE
Ribbon
Drive Unit
-
13
All gears
0
70 (light film), All
bearings, pivots, and clutch
shafts
0
6.
Friction disk interposer stud and ball 06.
Pinion spline 06.
Keep friction drag surfaces oil
free. Excessive oil and grease
must be wiped from all surfaces to prevent any containination of ribbon.
Check for wear and binds.
Check for correct operation.
Lube only when
surface appears dry.
0
BLOWERS
Hammer Unit
Replace blower air filter as
necessary.
1
FEED
Tractor
Stacker
Light film of lubriplate
0
70
on tractor drive gears,
tractor ramps, and tractor
shafts.
Check tractor adjustments as
required.
Bevel drive gears 070. (Use
light film of grease only).
Friction drive shaft 06. Lift
shaft '06.
Clean as necessary.
Check for broken friction
springs as required.
Check for wear on friction
drive roll.
2
PRINT
Hammer Unit
Strip residual
and strip residual fastening bands
Type Array
Drum
Hammer magnet armature
pivots
0
6. Hammer surfaces
that contact armatures (light
film
0
6.)Armature backstops
(light film
0
6.)
Check for loose hammers.
Check for loose magnet coils.
Check for worn residuals on
hammer magnet face (core).
Replace every 26 weeks
Clean type array with vacuum
cleaner as required.
Check for proper tension in
chain (316" sag of slugs at
front of type array when type
array is held with front side
down).
Wipe off surface of timing
disk with clean cloth.
Check and clean as necessary.
3
EMITTER
Emitter
Contact Rolls
26
Emitter surface #6 (light
film)
Check for worn brushes.
Check for pitted surface.
Contact roll bearings
0
6.
Clean contact rolls as necessary.
Check tape brushes for loose
strands.
5
DRIVE
Ribbon
Drive Unit
Hydraulic
Unit
6-8 Line
Drive
Ribbon
drive motor (2 all
cups)
0
6.
Blower motor (2 oil cups) 06.
Check timing belt for tension.
Only when leakage is apparent, check proper hydraulic
fluid level. (Approx. to
bottom of coils).
Light film 070 on active surfaces of all gears, shift fork,
summing plate, and detent
wheels.
Detent arm pivots and rollers
0
6.
Check for correct operation.
9
MISC
Frame
T-Casting
Ph eonolic
Support
Chock
Use light film of
0
24
on active surfaces of gears, slides,
guides, and levers as required. Use 06 on bearings,
bushings, and pivots as required.
Check for and binds.
Check adjustments as required.
1403
Figure 1. IBM 1403 PM Routine
PREVENTIVE MAINTENANCE
5
Timing Disk Housing
Cylindrical Nut
Stop Collar
T Casting
Read Head
—
Timing
Disk
Oil Reservoir
Timing Disk Drive Gear
Movable Base
Mount Block
Mechanical Latch Interlock
Print Control Dial
< / \
> \\ \ Connecting
Bolt
Hollow Shaft
Type Array
Drive Motor
Interlock Switch
Limit Stud
Print Timing Slide
Oiler
Knurled Bushing
T -
Casting Lock Lever
~
e
~
Figure 3.
Left End of T-Casting
2. Set up the system.
a.
Program to print continuous lines of H's.
b.
Press the start key.
3. Position the read head for correct horizontal print
alignment.
a.
Hold the print control dial at the correct setting.
b.
Position the cylindrical bolt. Turn the bolt with a
screwdriver and determine the left and right limit of
character cut off.
c.
Turn the bolt to the position midway between the
limits found.
4. Press the carriage stop key.
5. Examine the printing for alignment. Individual position misalignment can be corrected by adjusting individual
hammer magnets for armature to core clearance.
Forms Width Vernier
1. Prepare to adjust vernier.
a.
Remove knobs.
b.
Remove the inner front cover.
c.
Remove the gear guard.
d.
Replace the knobs.
e.
Locate the left forms tractors in corresponding
slots in the tractor guide bars.
f.
Locate the right forms tractors in corresponding
holes in face of the removable slides.
g.
Locate the forms tractors apart at the extremes of
the guide bars.
2. Adjust the left tractor pin feeds horizontally (in a
vertical line) .
l
Figure 2. Translator Frame
8
REMOVALS AND ADJUSTMENTS
9
Figure 4. 6-8 Line Drive
~
6
a.
Place a straight edge along the pin feeds to check
for alignment.
b.
Shift the tractor guide bars to align the pin feeds
within 0.005". There are two screws in each end of the
bar.
c.
Keep the left horizontal surface of guide bar
against the corresponding horizontal lip of the printer
casting.
3. Adjust the right tractor pin feeds.
a.
Orient the horizontal adjusting screws and vertical
drive collar to align the right pin feeds within 0.005"
horizontally (in a vertical line) .
b.
Place a straight edge along the pin feeds to check
for alignment.
c.
It may be necessary to reposition the horizontal
adjusting screws in relation to the collars and gears to
obtain adjustment.
d.
Position the friction nuts and collars for a maximum end play of 0.002".
4. The forms width vernier must operate with light
finger force.
5. After this adjustment has been made, adjust the vertical position of the right ends of the upper and lower tractor
guide bars for free movement of tractor assemblies.
Manual Clutch and Line-Selection Lever (Figure 4)
1. Prepare for adjustment.
a.
Move the translator frame to the left.
b.
Remove the front inner cover.
c.
Remove the manual clutch knob.
d.
Remove the manual advance knob.
e.
Remove the rear 1403 cover.
2. Check the adjustment of the manual clutch and the
line-selection lever assembly.
a. Check for clearance:
(1)
For a minimum end play of the detent arms
on the shaft.
(2)
For a minimum of 0.025" between the detent
and the detent wheel when the detent is inoperative.
(3)
Between the tines of the shift fork and the
slide gear hub.
b. Check for alignment:
(1)
of the detent arms to the slots in the camming
plate.
(2)
of the detent wheels to the detent arms.
c. Check for correct operation that:
(1)
the clutch shifts from 6- to 8-line drive and
vice versa.
(2)
the spring causes correct operation of the detent arms and wheels (there should be a force of
41/
z
to 61/
2
pounds on the detent arm).
(3)
the detent arm roller seats fully in the detent
wheel when the detent is operative.
3. If the conditions in step 2 are met, no further adjust-
ment is necessary. Proceed to step 12.
4. Further prepare to adjust the manual clutch and line-
selection lever assembly.
a.
Unhook the detent arm springs.
b.
Loosen both the detent wheels.
c.
Slide the right detent wheel to the right.
d.
Loosen the detent arm collars.
e.
Slide the detent arms to the left.
f.
Loosen the camming plate on the shift fork so that
the plate is just free to slide.
g.
Loosen the set screw that holds the camming plate
stop rod.
h. Wedge the paper between the shift fork tines and
hub of shift gear to center around shift gear hub.
5. Position the shift fork on the shift rack for gear mesh
and clearance.
a.
Detent the shift rack in 6-line drive at the right.
b.
Position the shift fork on the shift rack so that the
slide gear meshes with the 6-line driving and driven
gears and has clearance to the casting.
c.
Rotate the shift fork around the shift rack to center
the shift fork around the shift gear hub.
d.
Clamp the shift fork to the shift rack.
6. Align the detent arms to the camming plate.
a.
Set the slide gear to 6-line drive position.
b.
Align the detent arms with the left two slots in the
camming plate.
c.
Tighten the collars to hold the detent arms in
position.
7. Adjust for a clearance between the detent wheels and
the detent arms of 0.025" with the manual clutch in either
6- or 8-line drive.
a.
Turn the 6- and 8-line gear idler to a position
where it does not move when the slide gear is shifted
from the 6-line drive to the 8-line drive or, vice versa.
b.
Set the slide gear to the 8-line neutral position.
c.
Slide the right detent wheel opposite the right detent arm.
d.
Use the rubber band to hold the right arm against
detent.
e.
Adjust the camming plate roller stop to provide a
0.025" clearance between the detent arm and tooth of
the right detent wheel.
f.
Tighten the set screw to hold the camming plate
roller stop rod.
g.
Rehook the springs on the detent arms.
h.
Clamp the camming plate to the shift fork.
8. Align the detent wheels to the detent arms.
a.
Set the manual clutch to 8-line neutral.
b.
Align the left detent wheel to the left detent arm.
c.
Clamp the left detent wheel to the tractor shaft.
d.
Set the manual clutch to 6-line neutral.
e.
Align the right detent wheel to the right detent
arm.
f.
Clamp the right detent wheel to the tractor shaft.
g.
Check the operation of the manual clutch for four
manually operated spaces.
h.
Re-adjust as necessary.
9. Set the spring tension to provide 41/2 to 61/z pounds
force on the detent arm when it is engaged in the detent
wheel.
10. Remove the paper from between the shift fork tines
and the shift gear hub.
11. Position clutch interlock switch.
a.
Switch to make when the plunger is within 3/2 of
bottoming in the grooves of the shift rod.
b.
Position the switch to obtain this adjustment.
12. Replace the remaining parts in reverse order.
Forms Positioning
Tractor Shafts and Tractor Guide Bars
This procedure is given for the removal of the upper and
lower tractors, the tractor guide bars, and the drive shafts.
If only one set is to be removed, do only so much of each
step that will allow the desired set to be removed.
10
REMOVALS AND ADJUSTMENTS
11
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