Correctable Tape

SYMPTOM

POSSIBLE CAUSE

REMEDY

REMARKS

Character is not

completely

removed.

1. Wrong ribbon on machine

Replace with correct ribbon:

There are two kinds of correction

supplies.

The two different supplies for the

correctable ribbon should not be

mixed.

1. The Solvent ribbon, which has

a blue core, uses the blue core

correcting tape. This is a

cover up technique.

2. The correctable ribbon, which

has a yellow core, uses a

yellow core correctable tape

supply spooL This combination

picks the ink up and off the

paper.

2. Correcting tape installed

wrong.

Check and reinstall ribbon

correctly.

3. Binds in carrier

Check adjustments in "Carrier

will not escape section".

Carrier must rest against escape

ment pawl completely.

4. Paper bail arm weak

(78-10)

Clean paper bail rollers (78-10)

inside and out. Remove binds so

they roll freely.

The paper is not being held tightly

against platen. There is a strong

er paper bail available.

5. Card holder binding on

platen.

Adjust card holder for clearance

with platen.

6. Backspace not working

correctly.

""Go to backspace section"

After operating the correction

mechanism, the carrier must

rest on the escapement pawl

completely.

7. Correctable tape sticks

to card holder.

Non sticking coating on card

holder destroyed.

Replace card holder

8. Correctable tape being

lifted too high or too low.

1. Check and correct binds in tape

lift assembly (117-45).

2. Tape lift binding on card

holder (117-45)

Adjust card holder to eliminate

binds.

3. Lift arm latch (121-5) slips off

tape lift cam follower (121-6)-

not enough bite.

A. Check for binds in torque

bar (118-46) and tape lift

1. Adjust lift latch (121-5) back

and forth with adjusting screw

(121-7), so it clears lift cam

follower (121-6) at rest position

2. Adjust lift latch (121-5) up and

down for clearance with lift

cam follower (121-6), so latch

will move over lift cam follower

(121-6) when mechanism is

operated.

4. Binds in lift arm latch (121-5)

Remove binds in latch, and lube.

5. Lift actuating arm damaged or

bent (121-8).

Correct binds in arm (121-8) and

lubricate.

Correctable tape

will not feed.

FIRST:

Check adjustment

in correcting

tape does not lift,

but machine back

spaces.

1. Binds in tape feed

inhibitor.

Adjust minimum clearance

between feed cam follower (114-41)

and tape feed inhibitor (114-40)

with machine in the rest position.

Clearance is adjusted by forming

feed cam follower.

2. Feed bellcrank broken or

damaged.

3. Feed link broken or

damaged

4. Tape feed pawl or spiked

driver broken or damaged

5. Tape cradle supply spool

binding (117-46).

NOTE: Have experienced correct

able ribbon supply spool

not staying on supply

cradle due to non IBM

supplies.

6. Tape binding on lift

assembly.

Correctable tape

feeds continuous

or intermittently.

FIRST:

Check causes under "Correcting tape does not lift when trying to remove character, but machine backspaces"

1. Warped or damaged

torque bar.

Replace torque bar (118-46).

2. Binds in tape feed inhibitor.

1. Remove bind in inhibitor

(114-40) at pivot point.

2. Adjust minimum clearance

between feed cam follower

(114-41) and tape feed inhibitor

(114-40) with machine in the

rest position

Clearance is adjusted by forming

feed cam follower.

3. Tape feed cam follower

is not being held in latch

position.

1. Torque bar (118-46) is not

allowing tape feed inhibitor to

restore (114-40).

3. Adjust minimum clearance

between feed cam follower

(114-41) and tape feed inhibitor

(114-40) with machine in the

rest position.

2. Remove bind in inhibitor

(114-40) at pivot point.

4. Mode latch (119-1) not

holding mode actuating

bellcrank (119-2).

Form lug (119-3) on mode actu-

ating bellcrank (119-2) so it will

overthrow mode latch (119-1)

approximately  .005"

The overthrow is to ensure latch

up.

Correcting

keybutton will

not backspace

machine.

Correcting keybutton binding

on cover. (120-4)

Correct keybutton for binds by

controlling side play, forming or

repositioning machine within cover

Correcting keylever binding

at pivot point. (122-9)

Remove bind at pivot point and

check side play (122-9)

Backspace

mechanism must

be operating

properly before

repairing

Correcting

backspace.

Correcting keylever

(120-11) broken or off of

backspace keylever .

Check and replace keylever if

broken. Form keylevers for

adjustment if correctable keylever

slot is off of backspace keylever.

Carrier escapes

when trying to

remove

character.

No clearance between

escapement trigger (22-11)

and escapement torque bar

(22-13)

Trigger link broken, damaged or

maladjusted (22-4)

Adjustment:

1. Turn machine off. Depress

correcting keybutton.

2. Adjust trigger link (22-4) so

trigger (22-11) will just miss

escapement torque bar (22-13).

Correctable

ribbon mechanism

activates itself

Weak correcting keybutton

a restoring spring.

1. Replace restoring spring \vith

one that is stronger.

Machine has high profile

keybutton (120-4).

2. Replace keybutton with one of

lower profile.

Correcting tape

does not lift when

trying to remove

character, but

machine back

spaces.

1. Correcting keylever link

broken or maladjusted.

(122-12)

Replace link (122-12) or adjust

keylever link so mode actuating

bellcrank (119-2) is released

slightly before machine backspaces

2. Mode latch binding or

damaged.

Remove binds in mode latch or

replace (119-1).

3. Mode actuating bellcrank

binding or damaged.

(119-2)

Remove binds in mode actuating

bellcrank or replace (119-2)

4. Correcting torque bar

link (118-13) broken or

out of slot in correcting

torque bar (118-46)

1. Replace link (118-13) if broken.

If correcting torque link (118-13)

is out of slot in torque bar (118-46:

replace link in slot and control

side play with collar or clip on

left side of torque bar (118-14).

2. Normally, link is out of slot in

torque bar.

5. Correcting torque bar

has too much flexing,

causing lost motion.

1. Be sure torque bar (118-46) is

on proper side of back-up tab

on velocity control bracket.

(43-29)

The velocity control bracket is on

the bottom of the carrier (43-29)

2. Adjust torque bar stop bracket

(118-14) at right end of torque

bar (118-46).

Adjust stop bracket (118-14) for

minimum clearance without

flexing or contacting torque bar.

(118-46)

6. Torque bar (118-46) not

moving lift arm latch

(121-5) over lift cam

follower (121-6)

1. Tape lift actuating arm bent

(121-8)

Correct bend or bind in lift

actuating arm (121-8)

2. Check cause #7 in "Character

is not completely removed1f

section.

7. Tape feed inhibitor not

releasing tape feed cam

follower.

1. Remove binds in tape feed

inhibitor (114-40).

The clearance between tape feed

inhibitor (114-40) and tape feed

cam follower (114-41) allows the

inhibitor to move freely in and out

from under cam follower.

2. Adjust tape feed cam follower

(114-41) by forming for clear-

ance between tape feed inhibitor

(114-40) and tape feed cam

follower (114-41).

8. Correcting tape binding

on card holder or separator wire. (13)

1. Adjust card holder to rear to

release binds.

2. Adjust separator wire so:

  1. It clears the typehead at the

  half cycle point.

  2. It just contacts the card

  holder.

  3. It moves away from the card

  holder when the ribbon load

  lever is activated for the

  correctable ribbon.