DC Power Distribution
Failure Possible Cause Remedy
Check connector P7 on the Power/Signal
Interface PCB
+ or –6VDC section of PS2 failed Check test points and indicator lights.
No video, but pilot tone OK Blown fuses F15 or F16 Replace fuses
Check connector P7 on the Power/Signal
Interface PCB
+ or –14VDC sections of PS@ failed Replace PS2
Neither Vertical Lift Column lift
button works
AC input problem Refer to AC Power Distribution chapter in this
manual
One lift button works, but the other
one does not
Defective switch Check switch continuity (each switch contains
two momentary closure SPST switches).
Adjustment
Adjustments for PS1 are provided in the Calibration section of this manual.
Miscellaneous
13
Service
Periodic Maintenance
Contents
Schematics
Illustrated Parts
Installation
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