Appendix C: Field-Replaceable Units
Key
3
Table 99: Replacing a CPM-a Features (Continued)
Description
Threaded receptacle
Required tools:
• #2 Phillips or flat blade torque driver
To replace a CPM-a:
Step 1.
Remove the new CPM-a from the packaging. Do not touch the printed circuit board or connector pins. Hold the CPM-a by the edges.
Step 2.
Locate the appropriate CPM-a chassis slot.
Step 3.
Align the card with the chassis slot guides (Key 1 on Figure 71 ) and the captive screw with the threaded receptacle (Key 3 on Figure 71 ).
Step 4.
Insert the CPM-a into the CPM-a slot. Press the CPM-a firmly into the slot. Make sure that the connectors are fully seated in the chassis. The faceplate of the CPM-a should be flush with the chassis.
Step 5.
Tighten the captive screws (Key 2 on
Figure 71
) to secure the CPM-a. The recommended torque is 4 to 5 lbf-in (0.45 to 0.56 N .
m). Do not over-tighten.
Step 6.
If the system is powered, check the Power LED on the CPM-a faceplate.
Step 7.
Attach cables to the CPM-a ports.
Replacing the Internal Compact Flash Card on the CPM-a
Note:
•
The internal compact flash (CF) card is on the CPM-a; see Figure 72 . To replace the
compact flash card, you must first remove the CPM-a from the chassis.
The CF card is user-replaceable. It must be replaced by a supported CF card that has the following files:
• bof.cfg – boot option file
• boot.ldr – bootstrap software
• config.cfg – default configuration file
• TiMOS-m.n.Yz
7750 SR-a4 and SR-a8 Installation Guide 195
Removing and Replacing a CPM-a
→ m – major release number
→ n – minor release number
→ Y – A (alpha release), B (beta release), M (maintenance release), or R (released software)
→ z – version number
• iom.tim
• cpm.tim
These files can be transferred to the new compact flash as follows:
• copy the files from another compact flash to a PC, then transfer the files to the new compact flash card
• access a 7750 SR-a node using FTP, then transfer the files from the node to the new
CF card
Figure 72
shows the location of the internal CF card on the CPM-a.
Table 100
describes the features.
Figure 72: Location of Internal CF Card on CPM-a
196
S tat
Con s ole
2
Alarm s
2
ACO
1PP
S
1PP Compact Fla s h
Compact Fla s h
1
1
Key
1
2
Table 100: Replacing a CPM-a Internal CF Card Features
Description
CF card retainer bail
CF card (shown installed in the slot)
Required tools:
• small set of pliers or tweezers
To replace a compact flash card:
24558
7750 SR-a4 and SR-a8 Installation Guide
Appendix C: Field-Replaceable Units
Step 1.
If the system has a single CPM-a and you have a spare CPM-a with the appropriate
CF card, install the spare CPM-a in the empty CPM-a slot; see Replacing a CPM-a on page 194 .
Step 2.
Remove the CPM-a that has the compact flash that you need to replace and place it on a flat antistatic work surface; see
Removing a CPM-a on page 193
.
Step 3.
Remove the new CF card from the packaging and place it on a flat anti-static work surface.
Step 4.
Remove the CF card that is being replaced by doing the following; see Figure 72
for its location on the CPM-a.
i.
Lift the card retainer bail that covers the CF card slot (Key 1 on Figure 72 ).
ii. Use a pair of pliers or tweezers to pull the CF card out of the slot (Key 2 on
Figure 72 ). (The card is intentionally difficult to remove.)
iii. Place the extracted CF card on a flat antistatic work surface.
Step 5.
Insert the new CF card into the slot until it is fully seated.
Step 6.
Close the card retainer bail to hold the CF card in the slot.
Step 7.
If you installed a spare CPM-a in Step 1 , remove it; see
Removing a CPM-a on page
193
.
Step 8.
Reinstall the CPM-a that has the new CF card; see Replacing a CPM-a on page 194 .
7750 SR-a4 and SR-a8 Installation Guide 197
