Craden DP8 Ergänzendes Handbuch - Seite 9

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5.4.8 Front Document Roller Spring Force

Gate travel must be properly adjusted (see 5.4.7) before roller spring force is adjusted

1. Raise the gate by pressing 9 4 7 FUNCT  A.

2. Rotate a lower drive gear to manually feed an ½" wide strip of the thinnest paper used

(usually a receipt copy) under the rightmost front upper roller segment.

3. Adjust the right side roller spring tensioning screw so there is a very light drag from the

roller on the paper while rotating a lower drive gear. Clockwise adjustment increases drag.

4. Repeat steps 2 and 3 for the leftmost roller segment and the roller spring tensioning screw

on the left side plate.

5.4.9 Auto Alignment Skew Sensor Calibration

This procedure calibrates the relative position of the 3 skew sensors with a known square

document

1. Press 9 4 6 FUNCT to display "Skew Calibration".

2. Insert a document with known square top and left edges. If the document inserts straight

and its top edge is parallel to the input guide edge, press ENTER to calibrate the skew

sensors and exit. If the document did not insert perfectly, press EJECT and insert again.

5.5 REPLACEMENT PROCEDURES

5.5.1 Cabinet

1. Turn off power

2. Insert a small flat screwdriver blade in the slot in the middle of the rear cabinet edge and

pull down to flex and remove the hinge wire that fastens the cabinet to the mechanism.

3. Press the cabinet latches and lift off the cabinet.

4. To install the cabinet, raise the rear panel heatsink and place the cabinet on the baseplate

so that the latches fasten. Insert one end of the hinge wire through the box flange and into

the cabinet hinge plate. Flex the wire and insert the other end through the other box flange

and hinge plate so that the wire snaps straight.

5.5.2 Main PCB

1. Record all FUNCT 92 and 93 parameters so the new PCB can be configured correctly.

2. Disconnect the interface cable and remove the cabinet (See 5.5.1)

3. Disconnect the following cables from the Main PCB:

DC power

document motor

J3&4 printhead

document motor

DP9 dual port

4. Remove the 5 screws fastening the Main PCB to the rear panel heatsink.

5. To replace the PCB, reverse the procedure in steps 2 to 4. Insure that the spacers remain

on each mounting boss and that the 4 screws are tight. Use the longer screw to fasten the

transistor and finned heatsink.

6. Reconfigure the new PCB with the FUNCT 92 and 93 parameters recorded in step 1 and

the FUNCT 94 parameters listed on the configuration label.

J11

keypad

J12

display

J13

edge sensor (if installed)

J15

home & document sensors

J17

parallel port (if installed)

Roller spring tensioning screw (2)