IBM 4247, Maintenance Information

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Removals/Replacements
Overview
This section describes the removal and installation of the printer parts, and contains two levels of safety notices.
Danger calls attention to a situation that is potentially lethal or extremely hazardous to people.
Caution calls attention to a situation that is potentially hazardous to people.
The electronic parts of this printer can be damaged by electrostatic discharge (ESD). Use ESD protection devices
and procedures, including a static discharge wrist strap, while working on the printer.
There are different logic boards for every model of the 4247 printer. Ensure that you follow the correct procedure
for the model you are working with when removing or replacing:
v
Logic board: For Model A00, see “Logic Board - Model A00” on page 370. For Models 001 and 002, check
“Logic Board - Models 001 and 002” on page 378. For Model 003, consult “Logic Board - Model 003” on
page 366.
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Microcode: See “Locations and Orientations” on page 266, for the Model A00, 001, and 002 procedures.
Consult “Appendix C. Flashing the Memory of the Model 003” on page 549, for the Model 003 procedure.
v
Attachment cards: For Model 003, see “Model 003 Attachment Cards: Serial, Twinax, LAN, Coax” on page 359.
For all other models check the appropriate section in this chapter.
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Cables on cards and boards
Chapter 5. Removals and Adjustments
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