Product

Trendsetter NEWS

Background

Use this procedure to replace the registration blocks on TS NEWS devices when:

• Damage is caused to the existing registration blocks by careless removal/installation of a leading edge clamp (LEC)
• Plate registration errors occur due to an accumulation of aluminum oxide on the face of the stainless steel registration blocks.

Requirements

Registration block replacement kit

Procedure

1. Shut down the device and separate it from the loader if necessary.
2. Remove the leading edge clamps (LECs) as described in Replacing the Leading Edge Clamps. This exposes the four registration blocks.
3. Remove the four registration blocks and the insulation strips between the blocks and the drum.
4. Install eight mounting insulators (part number 57-9594A) into the four registration blocks.

   

   	Registration block (57-9472A: blocks 1 &4; 58-0548A: blocks 2 & 3)
   	Registration block mounting insulators

5. Ensure the Kapton insulators are lined up to the threaded holes in the drum.

   

   	Kapton insulator (isolates the electrical conductivity between the registration blocks and the drum)
   	Registration block

6. Use a multimeter to ensure there is no electrical contact between the drum surface and the registration blocks.

   

   	Registration block 2 (from away side)
   	Registration block 3 (from away side)
   	Registration block 4 (from away side)

    

   Check:	Results should be:
   Block 1 and block 2	No continuity
   Block 1 and block 3	No continuity
   Block 1 and pin 4	No continuity
   Block 2 and block 3	No continuity
   Block 2 and block 4	No continuity
   Block 3 and block 4	No continuity
   screw head to screw head	Continuity
   Registration block to screw head	No continuity
   registration pin to drum surface	No continuity

    
7. Reinstall the LECs you removed in step 2, as described in Replacing the Leading Edge Clamps.
8. Turn on the device.

Date submitted

21 Nov 2005