Table of Contents
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3-1.
Introduction.....................................................................
3-2.
PCA Access and General Maintenance ..........................
3-3.
Display Access................................................................
3-4.
Cleaning ..........................................................................
3-5.
Performance Test ............................................................
3-6.
Initial Procedure .........................................................
3-7.
DC Voltage Test .........................................................
3-8.
AC Voltage Test .............................................................
3-9.
Resistance Test ...........................................................
3-10.
Diode Test ..................................................................
3-11.
DC mA Test................................................................
3-12.
DC Amps Test ............................................................
3-13.
Calibration ..................................................................
3-14. Troubleshooting ..............................................................
3-15.
Supplemental Troubleshooting Procedures................
3-16.
Checking the Crystal Oscillator .............................
3-17.
Checking The Reference Voltage ..........................
3-18.
Checking Display Drive Voltage ...........................
3-19.
Checking Beeper Drive Signal ...............................
3-20.
Tracing the VDC Signal Path.................................
Maintenance
Contents
Chapter 3
Page
3-3
3-3
3-4
3-4
3-7
3-7
3-7
3-8
3-8
3-9
3-10
3-11
3-11
3-11
3-13
3-13
3-13
3-13
3-13
3-13
3-1
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Table of Contents
Troubleshooting
