3651 Print Quality - IBM 4975 02L Maintenance Information

3651 Print Quality
o
Correct printing
H H H H H H H H H H
H H H H H H H H H H
H H H H H H H H H H
" Character printed correctly
• •
H H H H H H H H H H
• •
• •
H H H H H H H H H H
••••
• •
• •
• •
e
Incorrect line spacing H H H H H H H H H H
H H H H H H H H H H
H H H H H H H H H H
e
Missing horizontal row of dots
• •
H H H H H H H H H H
• •
~ ~ ~ ~ ~ ~ ~ ~ ~ ~
• •
••••
• •
• •
o
Incorrect character
H
HH HH HH HH HH
spacing
H
HH HH HH HH HH
H
HH HH HH HH HH
e
Random missing dots
• •
H
HH HH HH HH HH
• • •
H
HH HH HH HH HH
••
•
• •
• •
• •
G
Printing misaligned
H H H H H H H H H H
vertically
H H H H H H H H H
H H H H H H H H H H
• Extra dots
• •
H H H H H H H H H H
• •
• •
H H H H H H H H H H
••••
••••
• •
• •
G
Printing misregistered H
H H
H H H H H H H
vertically
H H H H H H H H H H
H H H H H H H H H H
• Dots within a character are
•
H H H H H H H H H
•
H
•
•
not al igned vertically
•
•
H H H H H H H H H H
••••
• •
• •
•
•
o
Printing misregistered H H H H H H H H H H
horizontally H H H H H H H H H H
HHHHHHHHHH
o
Unintelligible printing
•
•
HHHHHHHHHH
•••
•
•
•
H H H H H H H H H H
• •
•• ••
•
•
o
Defective ribbon
H H H H H H H H H H
Oil spot on ribbon
H H H H H H H H H H
Defective platen
H H H H H H H
I~
H H
CD
Wrong character width
• •
H H
I~
H H H :-~
H H H
•
•
• •
H H H H H H H H H H
••••
•
•
• •
• •
e
Printing not aligned H H H H
H H H H
with the forms H
H H
H H
H H H H
(crooked printing)
H
H H H
H H H H H
H H H H
H H H H
H H H H
H H H
H H
H H H H H
H H
Maintenance Procedures 3-111