Download Manual - Lindos Electronics

13.0 Appendix A Troubleshooting
13.1 Lin4WinXP Problems
If MS20 communication with Lin4WinXP fails, check the error message:
Serial Port COMx is Not Available
The program has been configured to use a serial port which is not fitted, or
which is in use by another program.
13.2 No Oscillator Output
While the MS20 inputs are well-protected, and capacitor-coupled to block
DC, the oscillator outputs are protected by 5.1V Zener diodes: so connecting
an output to a source of DC may blow a fuse causing total loss of output or a
6dB drop. Replacing the fuses (surface-mount 125mA 1206), which are near
to the output connector (FS1-4), is tricky, but can be attempted by anyone
with the necessary skills (try soldering the new fuse on top of the old one).
Lithium-ion batteries contain a chip which protects against over-charge or
over-discharge, so do not be surprised if a flat battery measures zero volts
and appears to be open circuit. It is only protecting against discharge, and
will still accept charge.
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