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Service Guide for PM4410
Chapter 2 Operation
2.1.15 Power supply circuit
This switching type power supply circuit supplies the +5 VDC, ±12 VDC and +44 VDC.
The uses of output voltages and signals are described below.
Voltage / signal
Use
+5V
Logic IC/ LED drive voltage.
+12V
Logic IC drive voltage, option interface line voltage and LF motor locking voltage.
-12V
Option interface line voltage.
+44V
Printhead, SP motor, LF motor, Other motors drive voltage.
POW ALM-P
Output from the power supply circuit upon detection of an abnormal temperature rise in the
power supply circuit or an overcurrent of +44V.
The control unit suppresses the overcurrent by two-pass printing. If the output does not change,
the power supply circuit shuts off all DC output.
POW OFF-P
Output from the main PCB upon detection of an abnormality in the printhead, SP motor, LF
motor, Other motor driver circuit, and shut all DC output off.
AC DOWN-P
Output from the power supply circuit to the main PCB upon detection of no AC input with the AC
switch turned off. Then the main PCB outputs the POWOFF-P signal to the power supply circuit
to have the necessary information written into EEPROM.
POW DWN-P
Output from the main PCB to the power supply circuit upon detection of no host or operator
access for approx. 10 min., to start the power-save mode. In this mode, the power supply circuit
cuts off 44V output.
POW ONRST-N
Output from the power supply reset circuit to the main PCB. On receiving the POWONRST-N
signal, the main PCB prepares the main PCB RESET-N signal and +5VDC.
Copyright 1998, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner
Summary of Contents for Pacemark 4410
Page 44: ...Exchange BPX for any updates to this material http bpx okidata com...
Page 51: ...3 AG detector detail drawing...
Page 54: ......
Page 57: ...Rear tractor drive l Front tractor drive l...
Page 60: ...i Close position ii Open position iii Half open position...
Page 91: ......
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Page 130: ...4 LF Motor Belt Tension 7 Auto Gap Motor Assy 8 Bail Gear Assy Backlash...
Page 131: ...9 Installing printhead...
Page 134: ......
Page 136: ...Right Side View...
Page 137: ...Left Side View...
Page 138: ......
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Page 143: ...Page 67 Service Guide for PM4410 Chapter 5 Maintenance 28 Option Interface...
Page 150: ...Page 71 Service Guide for PM4410 Chapter 6 Maintenance 6 4 Part Layout 1 Board 2 Other...
Page 180: ...Page 99 Service Guide for PM4410 Chapter 6 Maintenance 27 MUPIS Interface Option...