IBM 4247, Maintenance Information

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Some procedures related to this section are found in this manual:
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“MAP 0200: 55 AFTA Errors” on page 127
v
“T&D12 - AFTA Calibrate Test” on page 171 (Model A00)
v
“T&D12 - AFTA Calibrate Test” on page 210 (Models 001, 002, and 003)
v
“T&D14 - Fanfold Form Printout Test” on page 174 (Model A00)
v
“T&D14 - Fanfold Form Printout Test” on page 214 (Models 001, 002, and 003)
v
“Print Quality Checks” on page 338
You can locate Print Test information in one of the 4247 User’s Guides.
Power Off Check: Perform this check if the AFTA indicator wheel (wheel), AFTA motor, gears, carriage shaft, or
platen have been removed at any time for service.
This check verifies the position of the wheel, and the manual operation of the AFTA mechanism. Use the wheel as
an indicator as you adjust the distance between the print needles and the platen. Each numeral change on the
wheel represents 0.1 mm (0.004 in.) change of AFTA gap. Thus each mark on the wheel represents a movement
half that amount or 0.05 mm (0.002 in.). The numbers ’0’ through ’6’ are printed on the wheel, but the numbers
can be considered to go beyond the ’6’ to an implied number of ’13’.
Chapter 5. Removals and Adjustments
286