Revision B
3-1
MAC 5000 resting ECG analysis system
2000657-002
3 Maintenance
Introduction ............................................................................... 3
Recommended Maintenance .................................................................. 3
Preventive Maintenance Inspection Report ............................................ 3
Required Tools and Supplies ................................................................. 3
Inspection and Cleaning ................................................................ 4
Visual Inspection ................................................................................... 4
Exterior Cleaning .................................................................................... 4
Interior Cleaning .................................................................................... 4
General .....................................................................................4
Thermal Printhead ....................................................................5
Battery and Patient Cable Replacement ............................................. 6
Battery Replacement .............................................................................. 6
Patient Cable Replacement .................................................................... 6
Disassembly Guidelines ................................................................ 7
Preliminary Steps ................................................................................... 7
Power Supply ......................................................................................... 7
Removal ...................................................................................7
Reassembly ..............................................................................8
Top Cover .............................................................................................. 8
Removal ...................................................................................8
Reassembly ..............................................................................9
Display/Keyboard Assembly ................................................................... 9
Removal ...................................................................................9
Reassembly ............................................................................11
Main PCB ............................................................................................. 11
Removal .................................................................................11
Reassembly ............................................................................11
Printhead Replacement......................................................................... 11
Removal .................................................................................11
Reassembly ............................................................................11
Diskette Drive Removal/Replacement .................................................. 12
Writer Roller/Carriage Assembly .......................................................... 12
Removal .................................................................................12
Reassembly ............................................................................12
Domestic Electrical Safety Tests .................................................... 13
AC Line Voltage Test ............................................................................ 13
120 VAC, 50/60 Hz .................................................................13
240 VAC, 50/60 Hz .................................................................13
Leakage Tests ...................................................................................... 14
Leakage Test Diagrams ........................................................................ 15