74 Theory of operation
ENWW
Power supply
Multifunction finisher
The multifunction finisher power supply adopts a remote switching system. At power on, the
printer issues a command to the video controller PCB. The video controller PCB then sends a
power-on signal (PWRON-IN signal) to the power supply. When the PWRON-IN signal is at the
high (“H”) level, the power-supply circuit su24 V power and +5 V power to the finisher
controller PCB. The +24 V power drives the feed motor, delivery motor, and solenoid. The +5 V
power drives sensors, IC chips, and the finisher controller PCB.
Figure 36.
Multifunction finisher power supply
3,000-sheet stapler/stacker
A universal power supply is activated when the MFP or printer power switch is turned on. The
MFP or printer paper-handling controller sends a power-on signal to the power supply through
the controller PCB. The power-supply circuit pr36 V for motors and +5 V for sensors and
controller electronics. The power supply is also activated when the controller PCA is set to
service mode.
3,000-sheet stacker
A universal power supply is activated when the MFP or printer power switch is turned on. The
MFP or printer paper-handling controller sends a power-on signal to the power supply through
the controller PCB. The power-supply circuit pr26 V for motors and +5 V for sensors and
controller electronics. The power supply is also activated when the controller PCA is set to
service mode.
Summary of Contents for C8088B
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Page 10: ...8 Contents ENWW ...
Page 44: ...42 Installation ENWW ...
Page 153: ...ENWW Chapter 6 Removal and replacement 151 Figure 118 Stacker controller PCA 2 2 2 2 1 3 2 3 ...
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Page 300: ... 2004 Copyright Hewlett Packard Development Company L P Q5693 Q5693 90002 90002 Q5693 90002 ...