Table of Contents
TESTING AND TROUBLESHOOTING.........................................................................................................35
ECT Test .............................................................................................................................................................35
Equipment Required...............................................................................................................................35
Initial Settings for the Test.....................................................................................................................35
ECT Test Procedure...............................................................................................................................35
Troubleshooting..................................................................................................................................................37
General Checks ......................................................................................................................................37
CRT Display...........................................................................................................................................37
Mother Board .........................................................................................................................................37
Troubleshooting Table ...........................................................................................................................38
Block Diagram....................................................................................................................................................39
Voltage Measurements.......................................................................................................................................40
Key Signals..........................................................................................................................................................41
Adjustment Procedure.......................................................................................................................................43
Equipment Required...............................................................................................................................43
ECG Signal.............................................................................................................................................43
50/60 Hz Notch Filter.............................................................................................................................43
Peak Detector .........................................................................................................................................43
CRT Display...........................................................................................................................................44
ASSEMBLY AND DISASSEMBLY.................................................................................................................46
Removing Cover .................................................................................................................................................46
Removing the High Voltage Power Supply......................................................................................................46
Removing the Yoke.............................................................................................................................................47
Removing the CRT.............................................................................................................................................47
Replacing the Main Power LED........................................................................................................................47
Removing the Recorder Assembly....................................................................................................................47
Removing the Mother Board.............................................................................................................................48
Replacing the Touch Panel ................................................................................................................................48
PURCHASING INFORMATION.....................................................................................................................49
Part List...............................................................................................................................................................49
Terms and Conditions........................................................................................................................................49
BOARD LAYOUT DIAGRAMS .......................................................................................................................A
SCHEMATICS DIAGRAMS.............................................................................................................................B
Model 101R/NR Service Manual iii