HP dc73 Service Reference Guide - HP Compaq dc7800 Business PC - Page 167

Backwall, Unlocking the, Smart Cover Lock, on Preparation for Disassembly, Computer Access Panel

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CAUTION: Before reinstalling the heatsink you must clean the top of the processor and the bottom of the heatsink with an alcohol pad supplied in the spares kit. After the alcohol has evaporated, apply thermal grease to the top of the processor from the syringe supplied in the spares kit. CAUTION: When reconnecting the cables it is important that they be positioned so they do not interfere with the rotation of the drive cage or power supply. Backwall 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Unlocking the Smart Cover Lock on page 108) 2. Prepare the computer for disassembly (Preparation for Disassembly on page 107). 3. Remove the access panel (Computer Access Panel on page 113). 4. Rotate the drive cage to its upright position. 5. Remove the power supply (Power Supply on page 152). 6. If necessary, remove the SmartCover lock from the backwall of the chassis using the special security wrench and disconnect its cable from the system board (Unlocking the Smart Cover Lock on page 108). 7. Remove the system board (System Board on page 153). Backwall 155

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CAUTION:
Before reinstalling the heatsink you must clean the top of the processor and the bottom of
the heatsink with an alcohol pad supplied in the spares kit. After the alcohol has evaporated, apply
thermal grease to the top of the processor from the syringe supplied in the spares kit.
CAUTION:
When reconnecting the cables it is important that they be positioned so they do not interfere
with the rotation of the drive cage or power supply.
Backwall
1.
If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (
Unlocking the
Smart Cover Lock
on page
108
)
2.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
107
).
3.
Remove the access panel (
Computer Access Panel
on page
113
).
4.
Rotate the drive cage to its upright position.
5.
Remove the power supply (
Power Supply
on page
152
).
6.
If necessary, remove the SmartCover lock from the backwall of the chassis using the special
security wrench and disconnect its cable from the system board (
Unlocking the Smart Cover
Lock
on page
108
).
7.
Remove the system board (
System Board
on page
153
).
Backwall
155