Sharp SX 1075 Service Maintenance Manual page 29

24 VDC POWER SUPPLY (con't)
6. Visually check wiring on Power Supply. (Figure
3-23)
Note: The "V-"connection on the Power Supply
is connected to "Earth Ground" by a short wire.
Also, lines labeled with "Printer" are only
present on baggers with a printer.
7. If there is a noticeable problem with the wiring
of the Power Supply, refer to the replacement
section for directions to rewire power supply.
8. Turn ON device using the power switch in the
back of the machine.
9. Check that the
illuminated. (Figure 3-24) If it is, you may
proceed to step 13.
10. Set your DVOM to a range capable of testing
120 Volts AC.
WARNING
USE EXTREME CAUTION WHILE SERVICING A
MACHINE WHILE
UNEXPECTED MACHINE
CAUSE SERIOUS INJURY.
WARNING
DO NOT ATTEMPT TO SERVICE THE MACHINE
DURING NORMAL OPERATION. KEEP HANDS
AND ARMS CLEAR OF MOVING PARTS.
WARNING
WHEN TESTING ELECTRICAL COMPONENTS
WHILE POWER IS APPLIED TO THE MACHINE,
USE PROPER
TECHNIQUES TO AVOID ELECTRICAL SHOCK.
11. Probe the L and N contacts on the Power
Supply with a DVOM; it should display
approximately 120 VAC (Figure 3-25).
SX™
Service and Maintenance Manual
ELECTRICAL COMPONENTS
Green Status LED
POWER IS APPLIED.
STARTUP
TROUBLESHOOTING
SECTION 3 – COMPONENT REPAIR
Figure 3-23. 24 VDC Power Supply
is
Status
LED
CAN
Figure 3-24. Power Supply Status LED
Figure 3-25. Probing 120 VAC on Power Supply
3-9 960714-02B © 2007 I2407