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Selectric Resources

 

 

Film Ribbon

SYMPTOM

POSSIBLE CAUSE

REMEDY

REMARKS

Print on paper

too light.

1. Check quality of ribbon

Some ribbons have varied amounts

of ink content. Check for variatior

or bad spots on ribbon.


2. Ribbon folding

1. Dirty or binding ribbon guides

(128-20).

 

2. Dirty or binding shock wire

sleeve (128-21).

3. Adjust right guide on ribbon

plate - form for proper tracking.

 

4. Ribbon lift binding (128-20) or

hitting card holder.

3. Characters typing over

same area on ribbon.

See "Ribbon will not feed section".


Ribbon will not

feed.

1. Ribbon feed pawl spring

broken or missing.

Replace feed pawl spring (129-24)


2. Ribbon feed pawl binding

on ribbon plate (129-25).

Adjust ribbon plate (129-26) left

or right to prevent feed pawl from

binding (129-25).


3. No lubrication

Clean and lubricate ribbon mecha

nism completely.


4. Ribbon drive spring

broken, weak or dirty.

Replace drive spring; or clean and

check spring (128-24).


5. Ribbon feed & lift wheel

(111-30) not being held by

detent after feed operation

Adjust ribbon feed cam follower

stud (129-27) so ribbon feed and

lift wheel (111-30) will not rotate

beyond detent position on ribbon

lift wheel.


6. Ribbon feed pawl eccentric (129-27) loose,

broken or maladjusted.

Adjust pawl eccentric (129-27)

until feed pawl (129-25) drives

ribbon feed & lift wheel to next

detent position (111-30).

The ribbon feed & lift wheel has

windows in it. The detent uses the

windows to prevent the ribbon feed

& lift wheel from rotating back

wards. Each time the machine

cycles the ribbon moves one detent

position. This method is used on

early level machines.

7. Ribbon corner guide bind

ing on ribbon spool.

Form corner guide (128-22) to

prevent binding on ribbon spool.


Machine will not

print full character.

1. Ribbon lift binding on

card holder.

Adjust card holder to rear to

prevent binding on ribbon lift

(128-20).


2. Ribbon lift guides binding

rivets, causing ribbon to

fold.

Clean and free guides of binds.

(128-20).


3. Ribbon folding

Clean shock wire and sleeve.

(128-21).

Adjust shock wire for slight angle.

4. Ribbon flat links broken

or damaged (105-14)

Replace ribbon lift guides (105-13)


5. Ribbon not feeding properly.

See "Ribbon will not feed section".


6. Spring off ribbon lift

control link.

Replace spring (105-15)