Service – AMETEK Lx Series II User Manual
Page 121
User Manual
Lx / Ls Series II
117
7. Service
7.1 Cleaning
The exterior of the power source may be cleaned with a cloth dampened with a mild detergent
and wrung out. Disconnect mains power to the source before cleaning. Do not spray water or
other cleaning agents directly on the power source.
7.2 General
This section describes the suggested maintenance and troubleshooting procedures. The
troubleshooting procedure is divided into two sections. The first section deals with basic
operation and connection of the equipment. The second section requires opening the unit and
using LED indicators and a simple multimeter to troubleshoot the unit down to the module level.
Only a qualified electronic technician should attempt this level troubleshooting.
7.3 Basic operation
Table 7-1: Basic Symptoms
PARAGRAPH
PROBLEM
7.3.1
Excessive Output Voltage
7.3.2
Poor Output Voltage Regulation
7.3.3
Overload Light On
7.3.4
Distorted Output
7.3.5
Unit Shuts Down After 1-2 Seconds
7.3.6
No Output and no lights on front panel
7.3.7
No output, but front panel controller is active.
7.3.1 Excessive Output Voltage
CAUSE
SOLUTION
External sense not connected(If used)
Connect external sense wires from TB2 on
rear panel to the AC power outlet TB1A
and TB1B
7.3.2 Poor Output Voltage Regulation
CAUSE
SOLUTION
Unit is overloaded
Remove overload
Unit is programmed to wrong voltage
range.
Select correct voltage range.
Input line has fallen below spec. limit.
Check input supply voltage.