Processor Settings - NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 09-1997 Service Manual

4-2 Processor Speed Settings
1. Power off and unplug the system and any peripherals.
2. Remove the system unit cover (see "Removing the System Unit Cover" in
Section 3 of the PowerMate Professional Series Service and Reference Manual).
Locate the jumpers on the system board (see "System Board Jumper Locations"
3.
in Section 3 of the PowerMate Professional Series Service and Reference
Manual).
You may have to remove any installed expansion boards to access the jumpers
(see "Removing Expansion Boards" in Section 3 of the PowerMate Professional
Series Service and Reference Manual).
Check the processor/bus speed jumper setting against the following figure. If
4.
necessary, change the jumper setting by lifting the plastic block and placing it on
the appropriate pins.
NECCSD recommends using needle-nose pliers to move a jumper.
Reinstall any removed expansion boards (see "Removing Expansion Boards" in
5.
Section 3 of the PowerMate Professional Series Service and Reference Manual).
Replace the system unit cover (see "Replacing the System Unit Cover" in
6.
Section 3 of the PowerMate Professional Series Service and Reference Manual).
Power on the system.
7.
WARNING: The system power must be off
before changing a jumper setting.
Processor Speed
233 MHz
J9C1
Jumpers
4
1
5
A 2 A
6
3
4
1
5
B 2 B
6
3
4
1
5
C 2 C
6
3
Figure 4-1 Processor Settings
266 MHz 300 MHz
J9C1 J9C1
Jumpers Jumpers
4 4
1 1
5 5
2 A 2
6 6
3 3
4 4
1 1
5 5
2 B 2
6 6
3 3
4 4
1 1
5 5
2 C 2
6 6
3 3