TXR 325D, Maintenance Manual

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M-2008-7-15
Standard Frequency Series Generators
Maintenance 9
7.3 TROUBLESHOOTING ROTOR CIRCUIT
SYMPTOM MOST COMMON PROBLEM HOW AND WHERE TO TEST
Rotating Anode doesn’t start. Open fuse or loose holder F1
or F2 on the Mother Board.
Test Voltage A1 to A2 with unit ON. Should be 120-122
VAC .
Open Fuse or loose fuse
holder on Rotor Board.
Replace fuse or tighten fuse holders on Rotor Board.
Defective Prep Switch Test Voltage #3 to A1 PREP . 120-122 VAC .
Open PBL/SID/Thermal/
DOOR Interlock Safety
Switch Circuit.
Test Voltage #4 to A1 PREP . 120-122 VAC .
Defective Rotor Cable or
improper connections
07-08-09
Check continuity of wires from Control Terminals O7 - O8
and O9 to Tube Stator. If any of these wires, terminals, or
butt splices are OPEN CIRCUIT or loose, the Anode will
NOT ROTATE. Check Harness from the Tube Rotor to the
Rotor Control Board located in the Control.
Defective Tube Stator or
broken insert.
Check continuity of tube stator. You should find continuity
between any pair of the three {3} terminals. Gently shake
Tube Head or look into port to see if X-ray Tube is BROKEN.
If the tube is broken the anode will NOT ROTATE nor will
the filament LIGHT UP.
Defective Rotor Start
Capacitor.
Check Capacitor with a capacitor tester. If this capacitor is
either OPEN or SHORTED, the anode will not operate.
Defective 7634 Rotor Board Replace Rotor Board.
Rotating Anode Starts and Runs
but “READY” DOES NOT LIGHT
Rotor wiring is connected
incorrectly. Leads are
reversed.
Remove interconnect from x-ray control and Properly re-
connect to Mother Board Terminals 07 Color Black-08
Color Red or Green-09 Color White .
An exposure cannot be made. OPEN FUSE or loose fuse
holder on Rotor Board.
Replace fuses or tighten fuse holders.
An untested x-ray tube with
defective stator or wiring,
connected incorrectly has
been installed.
Check out current draw in the stator circuit leads No. 7
and 8 . The current in each of these leads should be 1.75
amperes or more. Check wiring.
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