Optical Scientific Inc
OFS 2000FW User’s Guide
P/N 1910-901-1
Rev. 03/28/13
57
10.2 Power and Signal Checks
10.2.1 DSP Power and Signal
A quick look at the 5 power level indicating LEDs will
show any power problems. If any of the LED's aren't
lit, check the power outputs at the system DC power
supply. If the power supply voltages are good,
replace the board.
Another source of problems is reversing the
connection at the DSP "Main Com" connector J2.
This can happen during service or when changing
boards. Be sure the red stripe is oriented as shown
here in Figure 10.2.
10.2.2 Transmitter "Power" Led Not Lit
Check the AC voltage at the transmitter PCB terminal block. If
there is AC voltage present. replace the transmitter board. If
there is no AC voltage present, check the AC supply line for
fault.
10.2.3 Transmitter "Signal" Led Not Lit
Be sure the transmitter module wiring is firmly connected.
Replace the transmitter module.
Replace the transmitter PCB.
10.2.4 Receiver "Power" Led Not Lit
Check the +/- 8VDC voltages at the receiver PCB terminal block. If there is voltage present. Replace the
receiver PCB. If there is no DC voltage present, check the DC supply line for fault.
10.2.5 Receiver "Signal" Led Not Lit
Be sure the transmitter is transmitting
Be sure the light beam path is unobstructed and the windows are clear.
Check alignment as shown previously in this document.
Be sure the receiver module wiring is firmly connected.
Replace the receiver module.
Replace the receiver PCB.
Figure 10.1 DSP Power Indicators
Figure 10.2
DSP “Main Com
