Overcurrent Protection; Overvoltage Protection; Power Save; Stopping Output By Interlock Switch - Epson AcuLaser CX11 Service Manual

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EPSON AcuLaser CX11/CX11F

1. DC POWER SUPPLY

Overcurrent Protection

All outputs (+24VDC, +5VDC, +3.3VDC) from LV/HVPS are stopped when

short-circuiting on the way to the earth or ground. Each output is restored by

eliminating the cause of the short-circuit, and turning the printer OFF and then

back ON at specified time interval. The overcurrent protection circuit is activated

when a current exceeds 16A flows.

All outputs from LV/HVPS are stopped when an overvoltage is detected. The

operating voltages for overvoltage protection of each output are as follows:

+24VDC: 36VDC

+3.3VDC: 5VDC

Name of Signal Line

Signal for turning +24VDC OFF

Name of Signal Line

The I/L +5VDC signal that arrives via Front Interlock Switch, Upper

Interlock Switch and Fuser Interlock Switch becomes the power source of the

LV/HVPS internal Relay coil. This signal opens/closes Relay contacts, and

controls INTERLOCK +24VDC and INTERLOCK +5VDC.

Printer System Electrical Connection

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Figure 7-8. DC POWER SUPPLY Connection and Wiring Diagram

MOT ASSY P/R

PWBA FUSER CONTROL

Leg_Sec007_002FB

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Aculaser cx11f