Kipp&Zonen Brewer MkIII - Manual (Page 8)

MKIII SERVICE MANUAL 3
PREFACE
This document has been developed to aid an operator when a Brewer Spectrophotometer stops
operating or whose operating characteristics have changed since leaving KIPP & ZONEN B.V.. It
has been developed from the experience of KIPP & ZONEN and present users of the Brewer. The
most likely electronic failures and ones which can be repaired in the field have been documented.
1 PURPOSE AND APPLICATION
The purpose of this manual is to help the operator diagnose problems with a Brewer
Spectrophotometer to an assembly level. Component level diagnostics will not be covered since
the replacement of many components may require instrument realignment or re-calibration.
Potentiometers should not be adjusted nor set screws removed without completely defining the
problem area. If the information in this document is not sufficient, it is recommended that the user
contact KIPP & ZONEN before dismantling of any assemblies beyond what is called for in this
manual.
In several cases the operator will be asked to replace components that are not included in spares
kits. In these cases please contact KIPP & ZONEN for information on obtaining the component.
2 EQUIPMENT REQUIRED
1) Volt-Ohmmeter, capable of measuring from 1 mV to 2000 volts DC.
2). A clip on or in-line current meter.
3). In place of the above items, a digital Volt-Ohmmeter, such as the one contained in the KIPP &
ZONEN UV Stability Kit is adequate except for Voltage readings of greater than 1000V.
4) An oscilloscope may be useful (1 millivolt; 20 megahertz bandwidth).
5) An external UVB lamp may be useful when the internal quartz-halogen lamp appears at fault.
6) If the control computer is suspect, a second computer with Brewer software loaded may be
needed.
7) A terminal communications program such as Telix, Procomm, Xtalk or Windows HyperTerminal.