Lexicon 960L Service Manual page 18

960L Multi-Channel Digital Effects System Service Manual
7. For 220/240V operation, verify that the voltage selection switch* on the back of the 960L is set to the
230 Volt setting.
8. Follow steps 2 through 6 above. Note - the current draw should be approximately one-half of that listed
in the steps above dependant upon the accuracy of the current meter. It should not be higher.
*Note: Different manufacturer's power supplies have been specified for the 960L. There are some slight
mechanical differences in some of these power supplies. Some units will have a power supply with a
voltage setting switch as noted above. Some units will have a power supply that does not have a voltage
selection switch. The AC voltage input will be automatically sensed by the supply. Be sure to inspect the
unit in case of the need to "switch" for the appropriate AC input voltage.
Main Power Supply Connector J26 Voltage Level Tests:
1. Remove the top and bottom covers of the 960L.
2. Remove all DSP cards and the Midi card from the card cage in the front section of the 960L and place
them in static shielding bags.
3. With the front of the 960L facing you, locate the solder side of connector J26 on the Left side of the NLX
backplane.
4. Clip the ground lead of the DMM meter to the chassis for ground reference.
5. Take the Plus lead and using the table below verify the voltage levels indicated on J26.
Pin #
1
4
10
12
13
18
4-2
Wire Color
Orange
Red
Yellow
Blue
Black
White
Voltage Range
+ 3 volts DC +.4/-0
+ 5 volts DC ±.25
+ 12. volts DC ±.6
-12 volts DC ±1.2
Ground
- 5 volts DC ±.5