Half-Printing

SYMPTOM

POSSIBLE CAUSE

REMEDY

REMARKS

Half printing

(Machine not

printing a full

character)

1. Broken or cracked type

head (36).

Replace or repair

1. Typehead could cause problems

if the silver coating wears off.

Replace

2. Latch springs on element

broken.

3. Cap loose or broken.

2. Broken bias spring in

tilt ring. (44-31)

Replace

Bias spring is in current level

tilt ring - remove upper ball

socket (44-25) to check bias spring

3. No lubrication on type

head (36)

Lubricate inner circumference of

typehead with grease.

Grease is for bias tilt rings

(39-23).

4. Skirt clearance

See alignment section

5. Worn or loose roller on

shift arm (69-37)

Replace shift arm if roller is

worn.

Causes rotate detenting to change.

6. Gear train (47)

Adjust for maximum mesh - no

binds.

See alignment section

7. No lubrication in cycle

clutch.

Lubricate cycle clutch with recom-

mended grease (50-45)

Lubricate machine completely.

8. Cycle clutch spring worn

or damaged (70).

Replace

9. Cycle clutch sleeve (63-25

See alignment section

10. Cycle clutch collar

(63-26)

See alignment section

11. Cycle clutch overthrow

stop (63-25).

See alignment section

12. Tilt arm motion

See alignment section

13. Tilt homing

See alignment section

14. Tilt ring spacers (41-26)

Adjust tilt ring spacers for no

binds.

Maybe binding against upper ball

socket (41-25) or inside of element

15. Tilt ring pivot pins worn

or maladjusted. (39-21)

Remove and check for wear.

Pins are adjusted to center the

tilt ring (39-23) between yoke

extensions (39-22).

16. Tilt pulley link damaged

or broken. (46-46)

Replace

17. Tilt bellcrank worn

loose. (40-24).

Replace

Causes variation in tilt detenting.

18. Binds in tilt or rotate

detents

Adjust tilt screws (38-46) and

rotate detent screw (38-20)

Adjust for minimum clearance -

no binds.

19. Typehead homing

See alignment section

20. Balance arm

See alignment section

21. Rotate arm motion

See alignment section

22. Rotate link

See alignment section

23. Shift motion

See alignment section

24. Fine timing

See alignment section

25. Filter shaft timing (55)

See alignment section

26. Rotate spring tension

(46-33)

See alignment section

Spring may be broken - flush out

spring cage.

27. Too much headplay due

to worn dog bone (42-28)

upper ball socket (41-25)

or lower ball socket

(42-27).

Replace

This wear can be checked by

observing headplay. (See excessiveheadplay section. )

28. Binds in rotate or tilt

pulleys.

Remove binds and lubricate.

29. Character interrupter

(49-40)

See "Random malselection section,cause 27."

30. Shift interlock (69-38)

Adjust shift interlock (69-38) to

just touch the shift ratchet (4-3)

at the half cycle point.

31. Selector latch links

(51-46)

See alignment section

32. Latch stop pads (40-25)

See alignment section

33. No clearance between

detent cam follower

(71-40) and detent actu

ating lever (71-39).

See alignment section

34. Rotate shaft set screw

loose (43-30).

Tighten screw and check rotate

link adjustment.

See alignment section

35. Shift cam backup roller

worn or loose (48-39)

Replace if worn - older style

backup rollers are adjustable -

current levels are not.

Causes detenting to change.

36. Spring broken or missing

on velocity cam follower

(43-32).

Replace cam follower spring

(43-31).

Symptom would show periods,

comma's and low velocity charac

ters heavily embossing paper.

37. Negative 5 latch (72-41)

and bail stop screw

(72-42).

See alignment section

38. Broken rotate bellcrank

pivot stud. (40-32).

Replace