226 Upgrade and Maintenance Manual CX2550/60/70 M4
Ê For CPU 1 and CPU 2 LC heat sinks, 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.
I There are different procedures of removing the flexible tubes for
CX2550 M4 / CX2560 M4 and CX2570 M4.
8.3.2.1 CPU / RAM loop type 1: Removing the flexible tubes (CX2550 M4
/ CX2560 M4) Type 1
Figure 116: Removing the LC metal plate
Ê Remove the three screws (see circles).
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