APX 525/625 Generator Revision C Service Adjustments
©
2005 Del Medical Imaging Corporation
7/5/2005 Page 125
c. The +5 volt, +12 volt, and -12 volt LED's will light on the power module
mother board
8. Connect the negative lead of a D.V.M. to the ground test point (TP12) on the
mother board. Check for the following voltages on the mother board:
a. TP8 = +12 VDC +/- 5%
b. TP18 = +5 VDC +/ - 5%
c. TP17 = -12 VDC +/ - 5%
9. On the Power supply board observe the voltage at the F3 fuse clip nearest
C19 with respect to the mother board ground. This value should be between
+40 VAC and +50 VAC.
10. Turn the control OFF
11. Confirm the voltage of the capacitor bank falls to a safe level before
proceeding
Warning: The inverter capacitor bank will hold a charge after the unit is turned off. A
discharge circuit is employed to deplete this charge. However, always confirm with a
dc voltmeter that the capacitors are discharged.
12. Return fuse "F3" to its place on the power supply board
13. Turn the controller ON
Note: Steps fourteen, fifteen, sixteen, seventeen, and eighteen will confirm various
relay operations.
14. Press the Expose switch only. Observe the K1 relay on the mother board
energize. Release the Expose switch
Caution
DO NOT install the Main Inverter Fuse
at this time
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