AT&T PC 6300 - Page 381

MAINTENANCE
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REPLACING FAULTY
MODULES 5-148
Removing Upper System Module Cover 5-149
Removing Lower System Module Cover 5-150
Replacing Power Supply Unit 5-151
Replacing Fan 5-156
^ Replacing Motherboard 5-157
) i Replacing Bus Converter 5-161
Replacing Display Controller 5-162
Replacing Lower Mini-Floppy Disk Unit 5-168
Replacing Upper Mini-Floppy Disk Unit 5-175
Replacing Slim HDU 5-180
Replacing Memory Expansion Board 5-186
r. Replacing HDU Controller 5-187
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i ) Replacing Small Expansion Box (External
HDU) 5-189
Replacing Memory Chips ' 5-193
1 Mouse Care and Cleaning 5-198
Cleaning Keyboard Contacts 5-201
5-3