Disk Drive Power Supply Input Connector (P2 Or P3) - HP 400 Series Servicing Manual

Procedure 4-6. Winchester Disk Power Checkout for the Model 400t and 400dl
You need a voltmeter to perform this procedure.
Start this procedure with the system power off and the power cord unplugged.
Remove the system cover.
1. Ensure that the power connector (P2 or P3) is securely attached to the
2. Plug in the system unit's power cord and power on the system.
3. Use the voltmeter to test the voltages at the power supply input connector to the
Figure 4-19. Disk Drive Power Supply Input Connector (P2 or P3)
4. If the voltages are not within specifications, see Table 4-17 and perform the
5. If the power supply checks out within specifications and the problem persists,
4-68 Fault Isolation
Winchester disk drive.
A. If the fan does not start to spin, go to Procedure 4-5.
B. If the fan starts spinning, and the system unit's green Power LED is on, go
to Step 3 in this procedure.
Winchester drive. Unplug P2 or Pi to check the voltages. Figure 4-19 shows the
connector voltages.
power supply checkout in Procedure 4-5.
check the jumper configurations for the disk drive (refer to Appendix A for the
disk jumper configurations).
end of procedure