3-30 Installation and Service Guide
CPU Card
Note: Refer to “Handling Static-Sensitive Devices” on page 3-2 before removing or
installing the CPU card in this system. For Model 39H, refer to the “CPU Card for
Model 39H” removal procedure on page 3-31.
Removal
1. Set the power switches of the attached devices to Off.
2. Set the power switch of the system unit to Off.
3. If the system unit has a rear cover, do the rear cover removal procedure on page 3-3.
4. Do the Top Cover removal procedure on page 3-4.
5. On Models 340 and 350, remove the CPU shield.
6. Make a note of its position and remove the CPU card.
Note: For specific system planar connector locations refer to pages1-5 and 1-6.
J15
J13
J12
J11
J10
J9 J19
J21
J22
J23
J20
J2
J27
J25
J14
J8
J6
J5
J1
J7
J18
J17
1
2
3
4
A
B
C
J24
J16
CPU Card
Connector
Figure 2. System Planar Connector locations illustration.
Replacement
Reminder to Service Representative: After you exchange the CPU card, notify the
customer that the unique identification number of the system unit has changed. The
customer needs to update the authorization number for any program that uses the
identification number for access.
1. Align the CPU card with the front and rear card guides and the connector, and then press
the CPU card down into the connector.
2. Replace the CPU shield on Models 340 and 350.
3. Do the Top Cover replacement procedure on page 3-4.
4. If the system unit has a rear cover, do the rear cover replacement procedure on page
3-3.
5. Set the power switches of the attached devices to On.
6. Set the power switch of the system unit to On.
