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LED D1 illuminates.
Turn off unit. Adjust jumpers at H4 and H5 for best control of audio
amplifier with the volume control. This setting will be different for different
audio sources. This may take a little trial and error. Always turn off unit
before moving jumpers!
This completes testing. With the unit off set up jumpers at H1, H2, and H3
and the speaker output jumpers near speaker connector T1 for the
desired operating conditions.
FINAL CASE ASSEMBLY
Now that we have the UAM4SYS operating we'll complete the case assembly.
1. Locate the top cover. In order to assure a good ground connection
between the cover and the case bottom for noise shielding purposes we
need to make a slight adjustment to the cover. To do this simply hold the
cover by the sides and carefully slightly bend it inward toward the non-
painted side of the metal. This will tighten up the fit of the cover in the
groves of the case bottom tray.
2. Looking at the end of the case bottom you will see two slots on either side
at the bottom of the tray. The cover simply slides into these slots. Push it
as far as it will go on to the tray.
3. Now install the back panel and bezel assembly using the remaining 2
black screws.
4. Rotate all of the potentiometers fully counter-clockwise. Install a knob on
each potentiometer shaft. Make sure that the lines on the knobs point to
the 7 o'clock position, tighten the Allen screws.
5. Install the push button cover onto the shaft of S1.
UAM4SYS TROUBLESHOOTING
95% of the problems we see with kits returned for repair are due to assembly
errors. This is true even after emails and phone calls to our technical support
staff. The components of today are well made, well tested, and have an
extremely small failure rate. Please take your time verifying all component
placement before sending your kit back for repair.
The following section is designed to help you identify the circuit on the board
that is causing your failure. Use the schematic diagrams to identifying all
parts in a circuit. If you have questions please contact our technical support
staff by phone or email. Contact information can be found on the inside back
UAM4SYS • 28
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