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5Ć31
Functional Overview
C3187Ć90000
Front Panel PCA
The plotters use the same frontĆpanel PCA as the DeskJet 550. The frontĆpanel consists of
nine LEDs and eight switches, mounted on the PCA, which is deeply recessed behind a plastic
housing containing the key pad. The keys act on the switches through push rods. Light pipes
transmit the light from the LEDs to the display area.
The LEDs are driven by drivers on the main board, under the control of the servo processor.
The LED layout is shown below:
led[1]
led[4]
led[7]
led[2]
led[5]
led[8]
led[3]
led[6]
led[9]
Front-Panel LEDs
The keypad layout is shown below:
led[2]
led[3]
led[6]
led[7]
key[0]
key[1]
Switch[1]
Switch[2]
Switch[3]
Switch[4]
Switch[5]
Switch[6]
Switch[7]
Switch[8]
Front-Panel Key Pad
The switches are connected as a 4x2 matrix. The switch matrix, when scanned, is driven by
the four LED control signals led[2], led[3], led[6] and led[7]. The servo processor scans the
switch matrix by setting, in turn, each of the four control signals to `0' while holding the
other three at `1'. While driving the switch matrix, the processor reads the signals key[0],
and key[1]. A `1' on a key signal indicates a closed switch.
Содержание DesignJet 200
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Страница 22: ...2Ć4 Site Planning and Requirements C3187Ć90000 ...
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Страница 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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Страница 149: ...8Ć0 8 Troubleshooting ...
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Страница 179: ...9Ć0 9 Product History and Service Notes ...
Страница 193: ...10Ć1 10 Parts and Diagrams ...
Страница 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 ...
Страница 199: ...10Ć7 Parts and Diagrams C3187Ć90000 Window Center and Bottom Covers To Carriage ...
Страница 203: ...10Ć11 Parts and Diagrams C3187Ć90000 Left Endcover and Trim ...
Страница 205: ...10Ć13 Parts and Diagrams C3187Ć90000 Right Endcover and Trim ...
Страница 207: ...10Ć15 Parts and Diagrams C3187Ć90000 Carriage Axis Drive Left End ...
Страница 209: ...10Ć17 Parts and Diagrams C3187Ć90000 Service Station 1 2 3 3 4 5 7 6 6 ...
Страница 213: ...10Ć21 Parts and Diagrams C3187Ć90000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 6 8 11 17 21 20 Carriage Assembly ...
Страница 215: ...10Ć23 Parts and Diagrams C3187Ć90000 Media Drive Assemblies ...
Страница 216: ...10Ć24 Parts and Diagrams C3187Ć90000 Parts List Bail and Overdrive Assemblies pages 10Ć24a and 10Ć24b ...
Страница 219: ...10Ć25 Parts and Diagrams C3187Ć90000 Bail and Overdrive Assemblies ...
Страница 221: ...10Ć27 Parts and Diagrams C3187Ć90000 Pinch Arm Assembly ...
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