E–2
Principles of Operation
Functional Elements of the Printer
The principal functional elements of the P4280 printer are the common
controller board (CCB), the mechanism driver board, the power supply
board, the operator control panel, and the components of the
electromechanical print mechanism.
These elements are depicted at their most basic level in Figure E–1. The
following sections of this appendix discuss these elements in more detail.
POWER SUPPLY
PCBA *
CONTROLLER
PCBA *
OPERATOR
CONTROL
PANEL
MECHANISM
DRIVER
PCBA *
PRINT MECHANISMS
SHUTTLE
FRAME
ASSEMBLY
RIBBON
TRANSPORT
Paper Feed
Platen Open
Motor Control
Shuttle Control
Ribbon Control
Fan Control
Shuttle Status
Hammer Control
Ribbon Status
+5 Vdc
Data
Status
+5 Vdc
AC
POWER
PRINTER
INTERFACE
COMMON
FILTER
EMI
Fault
Hammer
Driver Data
Hammer
Timing Data
Shuttle & Ribbon Control
Paper
Control
DPU
RTPU
SHARED
MEMORY
Keyboard
Indicator
Message
ON / OFF
Switch / Circuit Brkr
AUTO–RANGING
PAPER TRANSPORT
CABINET
FAN
CARD CAGE
FAN
HAMMER BANK
FAN
Fan Control
Fan Control
Status
Data
HOST
Shuttle
Timing
PAPER
MOTION
PAPER
OUT
COVER
OPEN
PLATEN
OPEN
Sensors
+48 Vdc
+9.5 Vdc
+5 Vdc
* Printed Circuit Board Assembly
Figure E–1. Functional Elements of the P4280 Printer
Summary of Contents for P4280
Page 1: ...P4280 Line Matrix Printer Maintenance Manual R ...
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Page 236: ...A 22 Configuring the Printer ...
Page 246: ...C 2 Torque Table ...
Page 263: ...D 17 Wire Data Cable No Part No Description W7 150649 001 Cable Assembly AC Ground PIN 1 ...
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