Eventide ARGUS 3000 - Location of Potentiometer on 3000 and 5000

NOTE
This procedure should be entered into from
one of the two proceeding procedures
(replacing the daughter board). At the
point in each procedure that sends you
here, the unit is partially assembled. The
top (model 7000) or side (models 3000 and
5000) panels have not yet been replaced.
Also the rear cover is secured with only two
screws to the CPU board.
Remove The Rear Cover
1. On the rear cover there are two pan-head
screws, located at either end of the 25 pin D-
connector, which secure the rear cover to the
CPU board. Remove these two screws and
remove the rear cover. The potentiometer on
the daughter board is now exposed. (Refer
to Figures 10 and 11.)
POTENTIOMETER 1
r
BRO VI EN
Figure 10. Location of
Potentiometer on 3000 & 5000.
Check/Adiust The Voltage
2. Connect the Argus to a 11-30 volt power source.
3. Use a multi meter to measure the voltage between pins 5 (GND) and 6 (+5 FB) on the daughter
board.
4. If voltage is within +0.05 of +5 volts, go to step 6.
5. Using a very thin flat head screwdriver, adjust the potentiometer in either direction until it is within
±0.05 of +5 volts.
NOTE
The potentiometer is VERY sensitive. Adjust it in small increments.
Reconnect Rear Cover
6. Turn off the Argus and disconnect the power to the unit.
7. Place the rear cover on the unit. Connect the two pan-head screws on either side of the 25-pin D
connector.
8. Return to the point at which you left the previous procedure to complete assembly of the unit.
Page 44
Argus Maintenance Manual Part #5006 July, 1993