California Instruments 2001RP, User And Programming Manual

Page: 62 / 130

User and Programming Manual - Rev N
7 Service
7.1 General
This section describes 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 of troubleshooting.
7.2 Basic Operation
Table 7-1: Basic Symptoms
PARAGRAPH PROBLEM
7.2.1 Poor Output Voltage Accuracy
7.2.2 Poor Output Voltage Regulation
7.2.3 Distorted Output
7.2.4 Unit Shuts Down After 3-5 Seconds
7.2.5 No Output and no lights on front panel
7.2.6 No output but “Display” on front panel is on
7.2.7 Fault Lamp on
7.2.8 Can’t program AC Power System on GPIB/RS232
7.2.1 Poor Output Voltage Accuracy
If the power source exhibits poor programmed voltage accuracy, the following item may be at
fault:
Table 7-2: Poor Output Voltage Accuracy
CAUSE SOLUTION
The calibration is incorrect. Calibrate the output.
7.2.2 Poor Output Voltage Regulation
If the AC Power Source exhibits poor voltage regulation the following item may be at fault:
Table 7-3: Poor Output Voltage Regulation
CAUSE SOLUTION
The Remote Sense lines are not
connected at the same point monitored by
the external voltmeter used for load
regulation check. Connect AC voltmeter to Remote Sense
lines on the Rear Panel Power Output
terminal strip.
2001RP April 2007 53