General Component Replacement

Checking for Proper SIMM Seating in a MAP/40P or MAP/100P

 

Damage from electrostatic discharge is possible. See Protecting Against ESD Damage for more information.

To check for proper SIMM seating:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. If the system is in service, perform the following Steps a and b:
1. Stop the voice system.
2. Shut down the voice system.
3. Remove the incoming power. See CPU Circuit Card.
4. Access the circuit card cage.
5. Remove the CPU circuit card.
6. Verify that all SIMMs are properly seated in their slots.
    
   

   Note: A properly seated SIMM will be snapped into the socket with the small plastic tab through the hole in each end of the SIMM strip.

If one or more of the SIMMs are not properly seated.

1. Reseat the SIMM properly.
2. Replace the CPU circuit card.
3. Reboot the system.

If the amount of memory shown by the system equals the amount installed on the CPU circuit card, the problem has been corrected.

Checking for Defective SIMMs in a MAP/40P or MAP/100P

 

Damage from electrostatic discharge is possible. See Protecting Against ESD Damage for more information.

To check for defective SIMMs:

1. Remove one pair of the SIMMs. See Removing SIMMs from a MAP/40P or MAP/100P.
2. Reinstall the CPU circuit card.
3. Apply power to the system.
4. Reboot the system.
5. Verify that the amount of memory shown, as the system conducts the POST, is 64 MB. See the CPU Circuit Card.

Not 64 MB. If the amount of memory shown by the system is not 64 MB, one of the remaining SIMMS is defective. Complete Steps a through c. Then, if the amount of memory shown is still not correct continue with 64 MB below.

1. Remove power from the MAP/100P.
2. Replace the SIMMs that you removed in Step 1. See Installing SIMMs in a MAP/40P or MAP/100P for the procedure.
3. Return to Step 1 and continue, removing the second pair of SIMMs.

64 MB. If the amount of memory shown by the system is 64 MB, one of the SIMMs you removed is defective. Replace the pair with a new pair of SIMMs. See Installing SIMMs in a MAP/40P or MAP/100P for the procedure.

6. Reinstall the CPU circuit card.
7. Replace the side dress cover.
8. Apply power to the system.

Removing SIMMs from a MAP/40P or MAP/100P

 

Damage from electrostatic discharge is possible. See Protecting Against ESD Damage for more information.

To remove a SIMM:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Shut down the voice system.
3. Remove the incoming power.
4. Access the circuit card cage. See CPU Circuit Card.
5. Remove the CPU circuit card.
6. Lay the CPU circuit card on a flat, clean, ESD-protected surface.
7. Release the metal snap locks gently at the edge of the SIMM connectors.
8. Rotate the SIMM back and downward to approximately a 60-degree angle.
9. Remove the SIMM.

Installing SIMMs in a MAP/40P or MAP/100P

 

Damage from electrostatic discharge is possible. See Protecting Against ESD Damage for more information.

To install a SIMM:

1. Shut down the voice system.
2. Remove the incoming power.
3. Access the circuit card cage.
4. Remove the CPU circuit card.
    
   

   Note: Install a new SIMM in the slot adjacent to the last SIMM installed. Do not leave any empty sockets between SIMMS.

5. Position the new SIMM at approximately a 60-degree angle with respect to the CPU circuit card. See CPU Circuit Card.

All SIMMs are keyed to prevent you from inserting them incorrectly.

6. Push down at that angle until the SIMM is reset into the SIMM carrier.
7. Snap the SIMM into place by rotating it to an upright position.

The metal snap locks on the ends of the connectors for the SIMM will be forced open and then lock when in the upright position.

8. Ensure that the connector guide pins are seated into the clearance holes provided at each end of the SIMM.

When properly seated, the guides should be fully extended into the circuit card clearance holes.

9. Reinstall the CPU circuit card.
10. Replace the side dress cover.
11. Apply power to the system.
12. Reboot the system.
13. Verify the amount of memory as the system conducts the POST.

Replacing a Terminator SIP

 

Damage from electrostatic discharge is possible. See Protecting Against ESD Damage for more information.

If the circuit card is the last circuit card connected to either end of the TDM bus, you must ensure that the TDM bus terminator single in-line packages (SIPs) are in place on the circuit card. If the circuit card is not the last circuit card on the bus, you must remove the SIPs.

 

Note: "Last circuit card connected" means that there are no other cards between the circuit card and the end of the bus. There may, however, be empty connectors.

To replace a terminator SIP:

1. Align the terminator SIP with the SIP socket on the circuit card. See Replacing Terminator SIPs on the TDM Bus.

There are markings on both the terminator SIP and the circuit card which should be used to align the terminator SIP.

2. Insert the terminator SIP.

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