208 Upgrade and Maintenance Manual CX2550/60/70 M4
8.2.2 Removing CPU heat sinks
8.2.2.1 Removing the CPU heat sinks
Figure 95: Removing the CPU heat sink
Ê Loosen the captive screws (circles) following the sequence described
below:
V CAUTION!
Please don’t use an electric screwdriver.
1. Loosen the four captive screws one by one (in the sequence 4 to 1)
rotating them a half-turn each.
2. Loosen the captive screws 4 and then 3 rotating them two or three turns
each.
3. Repeat the step 2 until the screws 4 and 3 are completely loosened.
4. Loosen the captive screws 2 and then 1 rotating them two or three turns
each.
5. Repeat the step 4 until the screws 2 and 1 are completely loosened.
Ê Lift the heat sink out of the chassis.