Service position
Paper path nomenclature
Base tractor (
rear tractor when a second tractor is installed)
This tractor is installed at the factory on all machines. In a single tractor machine the base tractor is called the
front tractor. The base tractor becomes the (
rear tractor when a second (optional) tractor is installed.
Second tractor (optional, becomes
front tractor)
This tractor can be installed in front of the base tractor as an option. In a two tractor machine the second
(optional) tractor is called the
front tractor and the base tractor becomes the rear tractor.
Place the printer in the service position.
v
Remove the Rear cover.
v
Remove the Top cover asm..
Service checks and adjustments
Automatic forms thickness adjustment (AFTA)
The automatic forms thickness adjustment (AFTA) allows the printer to maintain a consistent distance between the
printhead and the face of the forms. Maintaining this distance (or gap) allows the printer to produce correct print
darkness, properly feed forms, and sustain printhead-drive operation. There are two service check and adjustment
procedures one may use with AFTA. There is a procedure that is relatively short and simple to perform: the Quick
AFTA service check and adjustment, and then there is the Standard AFTA service check and adjustment. It is
recommended that one perform the “Quick” procedure first; if the results are not favorable, proceed then to the
“Standard” procedure.
Attention: Do not attempt any adjustments, loosen any screws, or perform any steps until instructed to do so.
Note: To view the AFTA wheel as described in the following procedure, open the top cover and place a magnet
on the upper right corner of the operator panel to disable the cover interlock.
Chapter 5. Removals, service checks and adjustments
149
Summary of Contents for 4247-V03
Page 24: ...Reference table 8 ribbon lift and 26 pin cable connectors 93 Chapter 1 Diagnosing problems 24 ...
Page 138: ...Operator panel cable wiring Chapter 3 Wiring diagrams 138 ...
Page 144: ...Tractor assembly cable wiring Chapter 3 Wiring diagrams 144 ...
Page 164: ...Chapter 5 Removals service checks and adjustments 164 ...
Page 173: ...Table 24 Print quality sample 1 2 3 Chapter 5 Removals service checks and adjustments 173 ...
Page 246: ...Assemblies Chapter 6 Parts catalog 246 ...
Page 307: ...Taiwanese EMC Notices 307 ...
Page 310: ...Index Copyright IBM Corp 2002 310 ...
Page 311: ...IBMR Part Number 75P1301 Printed in U S A G544 5873 00 1P P N 75P1301 ...