Table of Contents
Advertisement
Service Information
7957 A/7958A
4-2.
4-3.
4-4.
4-5.
4-6.
Service Tools
The following tools and materials are required to service the disc drive:
• Torx* TIO Driver
• Torx* TI5 Driver
• Torx* T25 Driver
• Nut Driver, 9/32"
• Pozi Driver, No. I
• Anti-Static Workstation, part no. 9300-0794
PCA Locations
The locations of the three field replaceable assemblies (FRA's) identified by the
self-test diagnostics are shown in Figure 4-1, Field Replaceable Assembly (FRA)
Locations. Refer to chapter V for removal and replacement instructions and to
chapter VI for identification and ordering information.
Cable Connectors
Figures 4-2 through 4-5 show the locations of the cable connectors on the three
FRA's in the disc drive and the cables coupled to these connectors. Figure 6-1,
Disc Drive, Exploded View, shows how the cables are connected between the
FRA's. An overall cabling diagram of the disc drive is provided in Figure 4-5,
Cabling Diagram.
Signal Distribution
Cable connections between the FRA's in the disc drive are shown in figure 4-5.
The distribution of signals via these cables is shown in Figure 4-7, Signal
Distribution. The mnemonics appearing in figure 4-5 are defined in Table 3-2,
Mnemonics Table.
Power Distribution
Details of ac input wiring and dc power distribution are shown in Figure 3-5,
Disc Drive, Functional Block Diagram, and in Figure 4-5, Cabling Diagram.
*TORX is a registered trademark of the Camcar Division of Textron, Inc.
4-2
Advertisement
Table of Contents
