User Guide

The low voltage power supply has a protective circuit against overcurrent and overvoltage to prevent
failures in the power supply circuit. If DC voltage is not being supplied from the low voltage power
supply, the protective function might be running. In this case, turn the power off and disconnect the
power cable. Do not connect and turn on the product until the root cause is found and corrected. In
additon, the low voltage power supply has two fuses (FU100/FU101) to protect against overcurrent. If
overcurrent flows into the AC line, the fuse blows to stop AC power.
Safety
For personal safety, the low-voltage power supply interrupts power to the fuser, the high-voltage power
supply, and the motors when the front door or right door open.
The product has AC power even when the power switch is turned off because the product uses a soft
power switch. Be sure to disconnect the power cable before disassembling the product.
Voltage detection
The printer detects the power supply voltage that is connected to the printer. The DC controller monitors
the input voltage from the power source so it can control the voltage to the fuser.
Sleep (powersave) mode
Sleep mode reduces the power consumption of the product. There are three sleep modes depending on
the power consumption. The DC controller stops or converts each power supply according to the sleep
mode:
●
Sleep mode 1: stops +24VA and +24VB
●
Sleep mode 2: stops +24VA, +24VB and +5VD. Converts +5VA and +5VC into +3.3V
●
Sleep mode 3: stops +24VA, +24VB, +5VB and +5VD. Converts +5VA and +5VC into +3.3V.
Power
consumption
Status of power
button light
How to enable
mode
How to disable
mode (put in
Ready state)
Relative time to
Ready state
Off Less than 0.5W Off Manually: press
the power button
Automatically:
sleep timer
expires
Press the power
button
Longest
Auto off Less than 1W Blinks at 3 second
intervals
Sleep timer
expires
Printing or network
maintenance tasks
Longer than Sleep
mode
Sleep Approximately 6W Blinks at 3 second
intervals
Sleep timer
expires
Printing or network
maintenance tasks
Shortest
ENWW
Engine-control system
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