Dolev 800/800V/800V² - Assemblies
Carriage Motion Assembly
Home Position Detector

Description
Replacing the Home Position Detector (506A10130)
Check

Description

The home position detector (#127) is assembled on the lead screw bearing plate (#124). It is located on the optomechanical assembly guide beam, or carriage. Its function is to mark the starting point of the carriage movement.

Replacing the Home Position Detector (506A10130)

Tools and Accessories
Disassembling the Home Position Detector
Assembling the Home Position Detector

Tools and Accessories

Set of Allen keys

Disassembling the Home Position Detector

1. Power off the imagesetter using the control panel ON/OFF switch.
   
   
2. Open the left and right service doors. Remove the light-proof covers.
   
   
3. Disconnect the home position detector cable connector on the left side of the machine.
   
   
4. Dismantle the two screws (#23, 24, 113) that hold the home position detector base to the guide beam and pull the assembly out.

Assembling the Home Position Detector

1. Assemble the home position detector on the guide beam. Try to keep the flag on the carriage passing through the center of the detector and try to keep it located as close as possible to the previous detector location. Tighten the two screws.
   
   
2. Connect the cable connector back to the home position detector.
   
   
3. Enter the diagnostics program. Select UTILITIES. Select the Adjustment menu. Select H.P. Calibration. It will send the carriage to Home position in fast motion. It reads the micro steps offset.
   

The test passes if the offset is between 125 and 375. Correct the location of the H.P. by tapping on the home position detector with the back of a screwdriver until the reading received is in the middle of the correct zone.

Check

1. Try to run the test again and see if the position is still in the correct zone. Run the test 5 times and make sure that the results are within +/- 5.
   
   
2. Replace the light-proof cover.
   
   
3. Secure the service door.