IBM 4247 Maintenance Information page 102

Table 15. MAP 0190: Forms Feed Problems
Step Questions/Actions
Forms feed problems can have multiple causes. While
1.
following this MAP, do not stop your search after
resolving the first cause. This is especially true when
you are investigating environmental and usage
problems. Search for additional causes.
The error messages '02 FORMS JAM,' '002 FORMS
JAMMED,' '020 FORMS JAMMED,' and '099 FORMS
JAMMED' display when forms jam in the printer or if the
sensor circuit senses an incorrect situation or fails.
Either the printer sensed that the forms have stopped
processing through the printer, or the printer sensed
forms are present when no forms were expected.
For Models 001, 002, or 003, the messages 002 and
020 are sensed by the tractor sensors. These messages
indicate that forms have stopped. Message 099 is
sensed by the paper presence sensor (located near the
platen), and indicates unexpected forms are present.
For Model A00, the sense mechanism uses message 02
for either condition. Open and close the top cover while
you observe the (printhead) carriage assembly.
v If the carriage assembly moves, the paper presence
sensor indicates unexpected forms are present. This
is equivalent to a 099 message.
v If the carriage assembly does not move, the tractor
sensors indicate the forms have stopped. This is
equivalent to a 002 or a 020 message.
Power off (O) the printer.
Is this a 002 or a 020 jam message or the A00
equivalent?
Yes
Go to step 2 on page 103.
No
Go to step 28 on page 120.
Chapter 1. Diagnosing Problems
102