M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 134
Troubleshooting: PC Won’t Boot
9 Troubleshooting
This section contains tips and procedures for finding the causes of malfunctions of the M2540A.
For problems with optional peripherals, see the Peripherals Manual.
Always check that power cords are plugged in, and inspect them for wear.

PC Won’t

Boot

If the M2540A does not start when the PC’s power button is pressed, proceed as follows:
1. Confirm that the system power cord is plugged in.
2. Remove the service panel from the front of the lower enclosure by pressing down its two
latches. A green LED on the left side of the power supply, above the fan, indicates that the
power supply is energized by line voltage from the mains. The LED takes a few seconds to
light when the system is first plugged in.
NOTE When the PC is not on, or the token ring cable is disconnected, you can activate the
power supply by jumping the PWR DOWN pin on the BPAP board to chassis ground.
3. Unplug the PC power cord from the top outlet on the power supply, and connect the PC to
a power source using one of the following methods:
•Plug the PC’s power cord into a known 120 VAC source.
•Set the PC’s power selector switch to the local voltage, and use the system power
cord to connect the PC to mains.
4. Press the PC’s power button.
•If the PC starts, the power supply is bad. Replace it. See “Power Supply” on page154.
•If the PC does not start, try replacing its power cord. If the PC still does not boot, it
is faulty. See “PC Service” on page 142.