Zenith Z-100 PC series Service Manual page 113

Chapter 6
Parts List
This chapter contains a component view of the CPU/memory card (part
numbers HE-181-5445, HE-181-5857, and HE-181-5601) and the related
parts list. Refer to Figure 6-1 for the locations of the parts described in
this chapter. Table 6-1 lists all of these parts.
These cards are identical except in the arrangement of their RAM
devices. Card HE-181-5445 contains two banks (0 and I) of 64-kilobit
RAM devices. Card HE-181-5857 contains one bank (bank 0) of
256-kilobit RAM devices. Card HE-181-5601 contains I bank (bank 0) of
256-kilobit RAM devices, and 1 bank (bank I) of 64-kilobit RAM
devices. Other RAM arrangements are also possible on these cards, as
explained in Chapter 2, "Configuration."
CAUTION: Many ICs are electrostatic-sensitive and can be damaged by
static electricity if they are handled improperly. When you remove an IC
or card from its mounting or from its protective packing, do not lay it
down or let go of it until it is installed in the computer. Also, when you
need to bend the leads of an IC, hold the device in one hand and place
your other hand on the work surface before touching the IC to the work
surface. This will equalize the static charges between you, the IC, and the
work surface.
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Figure 6-1: CPU/Memory Card Component Layout