Ramsey Electronics UAM4SYS Assembly And Instruction Manual page 23

solder a pin on J6 on the top side of the main circuit board to hold things
in place.
6. Carefully slide the circuit board assembly out of the case bottom.
Solder the rest of the pins on J6 and J9 on both the top and bottom of the
main circuit board.
7. Insert D1, D3, D4, and D5; red LED's into the front panel circuit board.
LED's are polarity sensitive and MUST be installed in the proper direction.
The LED patterns on the layout diagram and the front panel circuit board's
silk screen show a circle with a flat edge near one of the lead holes. This
flat edge corresponds to a flat edge on the LED. This represents the
cathode lead. Make sure to match the flat edge of the LED to the flat
edge of the board's silk screen. DO NOT SOLDER the LED's at this time.
8. Carefully slide the front and main circuit board assembly back into the
front panel/case assembly. Line up the LED's with their corresponding
hole in the front panel of the case. Make sure that main circuit board front
left and right tips touch the Front Panel of the case. Adjust the LED's so
that they are all penetrating the front panel equally. It is up to you how far
you wish them to stick out. Solder one lead on each LED. Make sure you
are happy with their alignment and then solder the other lead of each
KLED. Now cut off the excess lead length close to the circuit board.
Verify no solder bridges are across their leads.
AR. ASSEMBLY REVIEW
Before applying power it is a good idea to look over the board for assembly
mistakes. I know you think you were careful during assembly and didn't make
any mistakes. However, we have noticed that the more confident someone is
that they didn't make any mistakes, the more likely it is that they did. Over
95% of all kits returned for repair have assembly errors.
The following steps check for common assembly errors that could cause
damage when the kit is powered up. All these steps should be
compared to the parts location diagram. Take your time and examine
the boards carefully.
1. Look over all IC's for proper orientation.
2. Check all electrolytic capacitors for proper orientation.
3. Check the two regulators VR1 and VR2 for proper orientation.
4. Look between the circuit board and case bottom to make sure all leads
are short enough so they don't touch the case bottom.
5. Check the back of the front panel circuit board for solder bridges.
UAM4SYS • 23