Appendix A: Troubleshooting Communication Data Issues
Symptom or Error
Error Initializing MPU11
1. Does the MPU11 have power?
Check that MPU11 power supply is receiving AC power (85-264VAC).
Check that MPU11 is receiving 5VDC & +-12VDC
If the MPU11 power supply is receiving AC power but the MPU11 is not
receiving any or all of 5 or +-12VDC signals, remove the power plug
from the mpu11 and measure DC voltage between red & black = 5VDC,
gray & orange = +12VDC, gray & purple = -12VDC. If any of these are
missing, replace the power supply. If the signals all are present when
the plug is disconnected, replace/repair the MPU11.
2. Are the MPU11 LED's are in correct states?
Check that the LED's are initializing correctly. About 30 seconds after
power is applied, the LED's states should be as shown below. If they are
not, it indicates that the MPU11 hardware did not initialize correctly is a
and that it needs to be replaced or repaired
3. Is the network cable plugged in?
Is the network cable plugged in to both the MPU11 and the PC?
If so is the green LED is on where the network cable plugs into the
MPU11 and also on the PC? If the LED's are off, try another shielded
CAT5 ethernet cable Note: A non-shielded cable can be used
temporarily for testing purposes
4. Can you ping the network adapter in the PC?
Open a command prompt Go to Start->All Programs->Accessories->
Command prompt and type ping 10.168.41.1 and press enter. If the
network adapter is working and configured correctly, you should see
the screen(s) below. If you confirmed the configuration of the network
adapter (step 5) in the PC, powered everything off and back up and still
get timeouts, there is a problem with the network adapter in your PC. If
you see the screen below (no timeouts) you can skip to step 6.
3
1
4
5
2L
5L
MPU11
DSP DBG Flashing
~1/sec
