5Ć29
Functional Overview
C3187Ć90000
Carriage PCA
The carriage PCA has four main functions:
The nozzleĆtiming ASIC controls the firing of the print cartridges, using data from the
shuffler ASIC on the main PCA.
A linear encoder senses the carriage position.
A line sensor enables automatic printĆcartridge calibration.
A thermistor monitors the temperature near the print cartridges.
The carriage PCA is installed in the carriage assembly, componentĆside down to accommodate
the operation of the linear encoder. A long 28Ćconductor cable (trailing cable) connects the
carriage PCA to the main PCA.
The carriage PCA requires 5 V @ 670 mA and 20 V @ 61 to 218 mA.
The regulator for the 20ĆV supply is located on the main PCA, but an active sense circuit on
the carriage PCA senses the voltage at the highĆfrequency bulk charge source capacitors.
The carriage processor system consists of the following:
Carriage processor
Nozzle timing ASIC
Servo processor interface
AnalogĆtoĆDigital (A/D) Converter
Print cartridges
Line sensor
The carriage processor's primary task is to configure the nozzleĆtiming ASIC. It receives the
configuration data from the servo processor. It controls the A/D converter used in the line
and temperature sensors, and senses printĆcartridge identity and continuity. It returns
status and sensor data to the servo processor.
To Servo
Processor
System
From Main
Processor
System
8052
Carriage
Processor
Thermistor
Line Sensor
Cartridge
Cartridge
Drivers
Nozzle
Timing ASIC
A/D Converter
Carriage-Processor-System
Summary of Contents for CalcPad 200
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Page 22: ...2Ć4 Site Planning and Requirements C3187Ć90000 ...
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Page 27: ... 4 1 2 3 4 5 6 mm 0 25 in 5 1 2 3 4 5 B A B A A B A B X X X ...
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Page 149: ...8Ć0 8 Troubleshooting ...
Page 178: ...8Ć30 Removal and Replacement C3187Ć90000 ...
Page 179: ...9Ć0 9 Product History and Service Notes ...
Page 193: ...10Ć1 10 Parts and Diagrams ...
Page 197: ...10Ć5 Parts and Diagrams C3187Ć90000 Legs and Media Bin 1 2 3 3 4 5 6 7 1 3 4 3 3 3 3 3 8 8 ...
Page 199: ...10Ć7 Parts and Diagrams C3187Ć90000 Window Center and Bottom Covers To Carriage ...
Page 203: ...10Ć11 Parts and Diagrams C3187Ć90000 Left Endcover and Trim ...
Page 205: ...10Ć13 Parts and Diagrams C3187Ć90000 Right Endcover and Trim ...
Page 207: ...10Ć15 Parts and Diagrams C3187Ć90000 Carriage Axis Drive Left End ...
Page 209: ...10Ć17 Parts and Diagrams C3187Ć90000 Service Station 1 2 3 3 4 5 7 6 6 ...
Page 215: ...10Ć23 Parts and Diagrams C3187Ć90000 Media Drive Assemblies ...
Page 219: ...10Ć25 Parts and Diagrams C3187Ć90000 Bail and Overdrive Assemblies ...
Page 221: ...10Ć27 Parts and Diagrams C3187Ć90000 Pinch Arm Assembly ...
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Page 244: ...IndexĆ04 C3087Ć90000 ...
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