AMETEK i-iX Series II - Manual (Page 150)

User Manual California Instruments
150 i Series II / iX Series II / iM Series II
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 the 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 “power on” LED on front panel is lit.
7.3.1 Excessive Output Voltage
CAUSE SOLUTION
External sense not connected Connect the external sense to the AC
power outlet TB2.
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 supply voltage.
7.3.3 Overload Light is On
CAUSE SOLUTION
Unit is overloaded Remove overload
Unit is switched to high voltage range. Select correct voltage range.
7.3.4 Distorted Output
CAUSE SOLUTION
Power source is grossly overloaded. Reduce load
The crest factor of the load exceeds 3:1 on
the low range or 5:1 on the high range. Reduce load current peaks by reducing
load.