Xerox Phaser 7760 - Page 417

January 2010
2-381
Phaser 7760 Color Laser Printer
OF 1-4
Status Indicator RAP’s
Revised
OF 1-4 AC Input Power
There is an AC input power failure between power cord and AC Drive PWB.
Initial Actions
• Entry to this RAP is from Call Flow.
• Check that the required voltage is available at the customer power outlet (approx. 110
VAC or 220 VAC). Inform customer if power is not available.
Procedure
AC Line Voltage is measured between the GFI Breaker P/J72-2 (+) and P/J72-1 (-) (Figure
1) (refer to Section 7, HVPS, +24V LVPS T10 Plug/Jack Locations - Figure 12).
YN
Check the Power Cord for an open circuit. If no problems are found, replace the GFI
Breaker (PL 9.2).
Measure voltage between P/J39-1 (ACH/BLK) and P/J39-3 (ACN/WHT) on the AC Drive PWB
(Figure 1) (refer to Section 7, AC Drive PWB, Noise Filter PWB Plug/Jack Locations - Figure
18). AC Line Voltage is measured.
YN
Check the connections between the GFI Breaker and the Noise Filter PWB.
If the connections are good, push the small button to reset the GFI Breaker.
If it is not tripped, replace the Noise Filter PWB (PL 9.2).
Measure voltage between J57 (ACH) on the Main Power Switch and J40 (ACN/WHT) on the
AC Drive PWB (Figure 1). AC Line Voltage is measured.
YN
Repair the open circuit between the Main Power Switch and the AC Drive PWB.
Hold the Main Power Switch in the on position while measuring voltage between J69 (ACH) on
the Main Power Switch and J39-1 (ACN/WHT) on the AC Drive PWB (Figure 1). AC Line
Voltage is measured.
YN
Replace the Main Power Switch (PL 10.2).
Hold the Main Power Switch in the on position while measuring voltage between P/J41 (ACH/
BLK) and P/J40 (ACN/WHT) on the AC Drive PWB (Figure 1). AC Line Voltage is measured.
YN
Repair the open circuit between the AC Drive PWB (PL 9.2) and the Main Power Switch
(PL 10.2).
AC input power to the AC Drive PWB is good.
Figure 1 OF 1-4 Input Power
A
A