LabGruppen TD-mark-II-091104 List

Checklist after service of class

TD Mark II

C 16:4, C 28:4, C 48:4, C 68:4, C 88:4,

Modified: 2009-11-04

Page 1 of 12

FP 4000, FP 6000Q, FP 7000, FP 9000, FP 10000Q, FP 13000 & FP 14000

Created by: Patrick Bergwall

Date: 2007-04-23

THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB
 2006 Lab.gruppen AB, Faktorvägen 1, S-434 44 KUNGSBACKA, SWEDEN

Modified: 2009-11-04

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Index

1 INTRODUCTION............................................................................................................ 3

2 CHECK LIST CLASS TD MARK II............................................................................. 3

THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB
 2006 Lab.gruppen AB, Faktorvägen 1, S-434 44 KUNGSBACKA, SWEDEN

Modified: 2009-11-04

Page 3 of 12

1 Introduction

This checklist shall be used to make sure the amplifier is always checked in a proper way after
service has been done. It is important to follow the steps in this check list and check all points
so that the set up of parameters in the amplifier is correct adjusted. When have done all
checks and adjusted the parameters the amplifier will work properly and will have the output
power that it is designed for.

2 Check list class TD Mark II

Always clean the amplifier by blowing with compressed air through coolers and fans. Be
careful when blowing where big electrolytic capacitors are placed so that the capacitor doesn’t
get damaged.

THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB
 2006 Lab.gruppen AB, Faktorvägen 1, S-434 44 KUNGSBACKA, SWEDEN

Modified: 2009-11-04

Page 4 of 12

1) After repair always start the amplifier with current potentiometer (VR1) located on
PWMF1-board. On is clockwise (cw) and off is counter clockwise (ccw). Check that the
switch pulse is normal. 300V line should increase some volts when relay clicks.

1.

Connect an oscilloscope probe.

Measuring points (old layout). Measuring points (new layout).

2.

VR1 fully ccw.

VR1

VR1-PWMF1

THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF Lab.gruppen AB
 2006 Lab.gruppen AB, Faktorvägen 1, S-434 44 KUNGSBACKA, SWEDEN