Electric Circuitry; Figure 35. Signal Flow Between The Output Device And The Video Controller - HP Color LaserJet 9500 Service Manual
Hp laserjet multifunction finisher, 3,000-sheet stapler/stacker, 3,000-sheet stacker, and 8-bin mailbox
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- Reference manual (50 pages) ,
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- Administrator's manual (56 pages)
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Electric circuitry
A 16-bit microprocessor is installed on the finisher controller PCB to control the finisher operation
sequence and the Jet-Link communication with the video controller PCB.
The finisher controller PCB drives solenoids and motors in response to the commands that the
video controller PCB sends through the Jet-Link communication line. The finisher controller PCB
also reports information about sensors and switches to the video controller PCB through the Jet-
Link communication line.
The following are important functions of the IC chips that are installed on the finisher controller
PCB:
Figure 35.
Signal flow between the output device and the video controller
ENWW
IC21 (CPU): controls the operation sequence
IC25 (EEP-ROM): backs up the adjustment values
IC23 (flash memory): stores sequence programs
IC1/IC4 (communication IC): communicates with the printer
Chapter 5 Theory of operation 73
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