AMETEK MX CTSH - Manual (Page 145)

User Manual MX Series CTSH Compliance Test System
19. Service
19.1 Cleaning
The exterior of the power source or the PACS-3-75 unit may be cleaned with a cloth dampened
with a mild detergent and wrung out. Disconnect mains power before cleaning. Do not spray water
or other cleaning agents directly at the equipment.
19.2 General
This section describes the suggested maintenance and troubleshooting procedure. 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 PACS-3-75 unit and
using the Test Points and a simple Digital Multimeter to troubleshoot the unit down to the circuit
level. Only a qualified electronic technician should attempt this level of troubleshooting.
CAUTION: VOLTAGES UP TO 312 VAC MAY BE PRESENT IN CERTAIN SECTIONS OF THE
PACS-3-75 MEASUREMENT UNIT.
WARNING: THIS EQUIPMENT CONTAINS POTENTIALLY LETHAL VOLTAGES. DEATH ON
CONTACT MAY RESULT IF PERSONNEL FAIL TO OBSERVE SAFETY PRECAUTIONS. DO NOT
TOUCH ELECTRONIC CIRCUITS WHEN POWER IS APPLIED
19.3 Basic Operation
19.3.1 No Power To EUT
CONDITION POSSIBLE CAUSE, REMEDY
No power to EUT Line voltage or power source not at expected value.
Verify power line voltage is correct. Verify power
source voltage is at programmed value
AC source voltage OK.
No power to EUT. Incorrect input wiring at TB4. Check for wrong
terminals or poor connections.
AC source voltage OK.
Input wiring is OK.
Still no power to EUT Incorrect output wiring from TB3. Check output
wiring from TB3, or, verify cable and plug going to
EUT is good
California Instruments Revision G 142