368 Upgrade and Maintenance Manual CX2550/60/70 M4
Figure 250: Removing LC heat sinks from SXM2 modules 3 (A) and 4 (B)
Ê Loosen the captive screws of SXM2 module 4 (B) (see circles) following the
sequence described below and using a #2 screwdriver:
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 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 1 rotating them two or three turns each.
5. Repeat the step 2 until the screws 2 and 1 are completely loosened.
Ê Repeat the procedure for SXM2 module 3 (A).
Ê Remove the LC heat sinks.
I If the LC heat sinks of SXM2 modules 1 and 2 are not to be replaced, the
steps described in the next section are not necessary.
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