Using The Remote Power-On Pins - HP E8402A User And Service Manual

Using the Remote
Power-On Pins
Front
Panel
Switch
Chapter 1
The remote power-on pins (pins 5 and 18) of the Diagnostic Connector allow
you to turn the mainframe on and off without using the front panel On/Stdby
switch. With the On/Stdby switch in the Stdby (off) position, connecting pin
5 to pin 18 on the diagnostic connector turns the mainframe on.
Disconnecting pin 5 from pin 18 turns the mainframe off.
HP E840X
Power
Supply
BACKPLANE
Figure 1-5. Remote Standby Switch Wiring.
Note
Pin 18 is ground in the HP E8402 and E8404 mainframes. Therefore,
you only need to ground pin 5 to turn the mainframe on.
SUB D
CONNECTOR
13 5
25 18
5
18
Getting Started 25
1
14