Enraf Nonius Radarmed 650, Руководство по обслуживанию

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Enraf-Nonius B.V. Radarmed 650 Service Manual 1409773
Maintenance January 2000
4-2
H.F. energy is emitted.
4.3.4 Magnetron Heater Voltage
See par. 4.5.2 for removal of the front cover.
Warning: Do NOT set the treatment time and/or start a treatment. When a treatment
is started high voltage (!! 2000 V. with respect to ground !!) is applied to
the cathode of the magnetron.
Switch on the Radarmed 650 unit. Check the mains voltage at the mains distributor strip
CNA (see appendix B fig. 11) between the white wire at connection CNA-1 and the purple
wire at CNA-2, CNA-3 or CNA-4 and check that the mains voltage is 230 V ±1 V / 50 Hz.
Measure the heater voltage directly at the magnetron at the two blue leads. The measured
voltage must be between 3.37 V and 3.43 V.
If the heater voltage is incorrect see par. 4.6.1.
Switch off the unit.
4.3.5 Supply voltage tests
Switch on the Radarmed 650 unit. Check the supply voltages, connect a multimeter with the
negative testing lead to ST168 (ground terminal) at the main PC Board (see appendix B,
fig. 6).
Connect the positive testing lead to T101 +12VDC (see appendix B fig. 6)
Connect the positive testing lead to T102 + 5VDC (see appendix B fig. 6)
Switch off the unit.
4.3.6 Safety tests
Check the resistance of the earth connection (see technical data).
Check the earth leakage current in normal condition (N.C.) as well as in the single fault
condition (S.F.C.) (see technical data).
4.4 TROUBLE SHOOTING
4.4.1 Trouble shooting list
Failure indication: Action to be taken:
4.4.1.1 Radarmed 650 does not 1. Check mains power supply
switch on; LED displays fail 2. Check/replace mains cable
to light, fan does not work 3. Check/replace mains fuses (mains entrance)
4. Check/replace mains switch
5. Check/replace main PC Board fuses
6. Check/replace wiring
7. Check/replace transformer (TR1)
4.4.1.2 Fan works, display fails to light 1. Check/replace main PC Board fuses
F104 / F015 /F016