User manual

User Manual – Rev B FCS Series II
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
unit and
Onl q
7.3 B
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
using LED indicators and a simple multimeter to troubleshoot the unit down to the module level.
y a ualified electronic technician should attempt this level troubleshooting.
asic 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
7.3.5 Distorted Output
7.3.6 Unit Shuts Down After 1-2 Seconds
7.3.7 No Output and no lights on front panel
7.3.8 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.
California Instruments 103