Maintenance
2 - 25
Periodical inspections
To maintain the unit's functions and performance, periodical inspections are
required.
The inspections explained in this section should be performed by service
representatives who have sufficient technical knowledge.
Periodical inspection intervals and precautions
Inspection item
Description
Periodical inspection interval
Periodical inspection should be performed at least
once a year.
Precautions before inspection
Simplified circuits that are used to measure protective
earth resistance are illustrated; however, fire, electric
shock, and other hazards accompany the manufacture
and use of such circuits. Handle with care.
Precautions after inspection
After the inspection is completed, clean each part.
Measuring device used for
inspection
Electronic voltmeter or digital voltmeter
List of periodical inspection items
Inspection item
Description
Safety inspection
Earth leakage current inspection
Enclosure leakage current inspection
Patient leakage current I inspection
Patient leakage current III inspection
Patient measurement current inspection
Protective earth resistance inspection
Inspection of
electrical performance/
characteristics
Sensitivity
Time constant (AMP)
Frequency characteristic
Control of in-phase signal
Counter electrode voltage
Internal noise
Recording sensitivity
Hardware inspection
Patient cable/connecting cable inspection
Limb electrode/chest electrode inspection
Recording paper/Keratin cream inspection
Operation Manual inspection
Trolley/cord hanger inspection (if any)
Enclosure inspection
Rating label inspection
Switch inspection
Power supply fuse inspection
Recorder inspection
Electrode inspection
Summary of Contents for FX-7302
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Page 12: ......
Page 60: ...Chapter 2 2 40 ...
Page 62: ......
Page 86: ...Chapter 4 4 18 ...
Page 87: ...4 19 MAIN BOARD circuit diagram PCB 6956B Power connection table No 1 ...
Page 114: ...4 46 ...
Page 116: ......
Page 130: ......
Page 131: ...6 1 MAIN BOARD PCB 6956B component side ...
Page 132: ...6 2 MAIN BOARD PCB 6956B soldering side ...
Page 133: ...6 3 OPERATION BOARD PCB 6957B component side ...
Page 134: ...6 4 OPERATION BOARD PCB 6957B soldering side ...
Page 135: ...6 5 ECG AMP BOARD PCB 6731D component side ...
Page 136: ...6 6 ECG AMP BOARD PCB 6731D soldering side ...
Page 137: ...6 7 MARK SENSER BOARD PCB 6942 component side ...
Page 138: ...6 8 MAGAZIN UP BOARD PCB 6943A component side ...
Page 139: ...6 9 CONNECTION BOARD PCB 7028 component side ...
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Page 151: ...7 9 Outline view 255 315 70 76 ...
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