10-22 Phaser 6280 Color Laser Printer Service Manual
Plug/Jack and Wiring Diagrams
LVPS Over-Current Protection Circuit
This circuit stops all outputs if the power supply voltage 3.3 VDC, 5 VDC, or
24 VDC is shorted.
The circuit is reset, when after the cause of short was removed, the power is
turned Off, and then On again after certain time.
LVPS Over-Voltage Protection Circuit
This circuit stops all outputs, if the power supply voltage 3.3 VDC, 5 VDC, or
24 VDC exceeds the specified voltage respectively.
At this time, the operating point is 32 VDC or less for 24 VDC, 7 VDC or less
for 5 VDC, or 4.4 VDC or less for 3.3 VDC.
The circuit is reset when the power is turned Off, and then On again after
certain time.
Deep Sleep Mode (Power Saver)
The output of the following power supply are stopped according to the signals.
Signal Line Name Description
LV TYPE Controls signal of the LVPS.
DEEP SLEEP
SLEEP
24 V OFF
FAN STOP Drives control signal of the Main Fan.
FAN LOW
FAN ALARM
Signal
+3.3 VDC +5 VDC +24 VDC
Sleep On Off Off
Deep Sleep Off Off Off
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