5Ć28 Functional Overview
C3187Ć90000
The following are the power components on the main PCA:
Two motor driver ICs and heatsinks.
To regulate the amount of energy given to the printĆcartridge heating resistors, a precise
voltage regulator controls the printĆcartridge voltage supply. The regulator power device is
located on the main PCA, but the cartridge resistors and drivers are located on the carriage
PCA. To reduce the effect of the long path between the voltage regulator output and the
cartridge resistors, an active sense circuit on the carriage PCA feeds back an error signal to
the main PCA. On the carriage PCA, the cartridge supply voltage is sensed by a precision
resistor divider and compared with 2.5V reference. This error is amplified, buffered, and
transmitted to the main PCA through the trailing cable. The voltage is regulated by a
regulator on a heatsink.
The plotter electronics are cooled by a fan, which may be turned on and off by the main
processor. A twoĆpin connector is used for the fan. Pin 1 connects to the black wire of the fan
harness and to the drain of a driver FET on the Main PCA. Pin 2 connects to the red wire of
the fan harness and to +12V on the Main PCA.
Summary of Contents for DesignJet 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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