Maintenance (Micron) workbook Iss07.pdf - 第63页

Issue 6, Nov 14 63 Objective PM2: Test and Optimize the Un der Screen Cleaner Settings T esting the Cleaner Method 1  Set the machine to step mode.  Press “Clean Screen”. A menu will ap pear. Set “Mode 1” to “W/V/D”. …

62 Issue 6, Nov 14

Visually inspect the glass cover (printhead cover) for signs of damage using the

TB390.

NOTE:

The glass windows are manufactured by an approved automotive supplier whose products

meet the R43 homologation standards.

All the necessary test methods have been used to ensure the glass meets the required

safety requirements and is fit for purpose before machine shipment, and in normal

operating conditions.

Technical Bulletin 390 details the regular checks that are referred to in the Annual

Service Program and the Preventive Maintenance section of the Technical Reference

Manual to ensure the glass remains intact and fit for continued operation

This information is also available for customers in Knowledge Base Article 1477 to allow

them to inspect for damage and raise with their local Service Control Centre if required.

Issue 6, Nov 14

Objective PM2: Test and Optimize the Under Screen Cleaner Settings

Testing the Cleaner

Method 1

 Set the machine to step mode.

 Press “Clean Screen”. A menu will appear. Set “Mode 1” to “W/V/D”.

 Step through the first cycle, monitoring the stencil surface to ensure that the cleaner

blades lift the stencil by about 1mm.

 Lift the head and ensure that the wet paper is between the wiper blades, and that the

paper is evenly wet.

 Close head and press “Step”. Lift the head again and ensure that dry paper is between

the wiper blades and the stencil apertures are clear. Check that no solder balls remain

on the stencil surface.

 Close head and “Step” again. Lift the head and ensure that all residues have been

removed from the stencil. Close head.

Method 2

 Remove the foil and mesh from an old stencil leaving just the frame. Load this into the

cleaner and perform a W/V/D clean while observing the performance through the front

cover. This is best done in step mode so you can mark how much paper is being

rotated between cleans to ensure clean paper is present.

64 Issue 6, Nov 14

Task 5:Using one or both of the methods above: test and, if necessary, adjust the

USC settings for best performance. Identify the parameters and their optimum

values below:

Parameter Value Comments

Task 6: If your machine has the Time to Go (TTG) functionality perform the tasks

below:

Using the procedures in the Technical Reference Manual:

1. Calibrate the Solvent Time To Go

2. Calibrate the Paper Time To Go

NOTES: