IBM 2142 manual Removals and Replacements-Machine Type 2140

Removals and Replacements—Machine Type 2140, 2142

	See Safety Notice 1: Translation on page	xi
Before removing any FRU, power-off			the computer, unplug all power
cords from electrical outlets,		then	disconnect any interconnecting cables.

Attention: The system board, processors, adapter cards, DIMMs, and

upgrade processors can be damaged by electrostatic discharge. Use an

electrostatic			discharge	(ESD) strap to establish personal		grounding.	If you
don’t	have	an	ESD strap,	establish personal	grounding by	touching a	ground
point	with	one	hand before touching the		static-sensitive	FRUs.

Note: Machine Type 2140, 2142 might contain drives and devices not illustrated in this book. Follow replacement instructions for the same size device if in doubt. See Appendix B, “Model/Monitor Configurations and FRU Part Numbers” on page B-1 for exact model configurations.

The	arrows	in	the removals and replacements procedures show the		direction
of	movement	to	remove a	field-replaceable unit (FRU), to turn a	screw, or to
press a tab			to release	the FRU.

Begin all removals by removing the cover (and rear cover, if applicable).

When other FRUs must be removed	prior to	removing	the	failing	FRU,	they
are listed at the top of the page. Go		to the removal		procedure		for each FRU
listed, remove the FRU, and then	continue	with the	removal of		the	failing
FRU.

To replace a FRU, reverse the removal procedure and follow any notes that pertain to replacement. See “Parts/Test Point Locations” on page 5-1 for internal cable connection and arrangement information.

Before disconnecting any cables, note their locations. Reinstall any new FRUs with cables in the same locations.

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