Digital Equipment Prioris HX590 DP, Service Maintenance Manual

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Service Procedures Digital PRIORIS HX590 & HX590 DP Server
42 MCS Logistics Engineering - Nijmegen
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CPU Module Jumper Settings
Feature Description Setting
CPU core/bus frequency ratio 2/1 speed bus
3/2 speed bus
J4, jumpered
J4, open
(1)
Reserved Factory use only
J8, jumpered
(1)
J8, open
(1)
Factory default setting
Set the CPU voltage to 3.3V
1) Remove the 5V Jumper Module form the 5V connector J100 on the CPU Module.
2) Push the 3.3 V Jumper Module on the pins of 3.3V connector J101 on the CPU Module. Make sure pin’s
1 of both connector J101 and the jumper module are aligned.
NOTE Digital recommends to NOT change the factory default jumper settings.
Earlier versions of the CPU Module did not have voltage regulator sockets as shown in
B of figure 3 - 11.
A
J4
J8
B
J100
J7
J101
Figure 3 - 11 Set the CPU Voltage to 3.3 Volt