9.5. SIMPLE WAY OF H.V. INVERTER/MAGNETRON TROUBLESHOOTING
Purpose:
Simple way
(3/23 seconds rule)
of identifying whether it’s Magnetron, Inverter or others.
Set-up:
The unit under question is connected through the Ammeter as shown below.
Procedure:
Follow the matrix table below to identify the problem source.
Note:
Do not replace both Inverter board and Magnetron simultaneously and automatically without going through this
procedure.
Power will:
Ammeter reading is:
To do:
Remedy:
Shut off in 23 seconds
after “Start”.
1. Between 0.5A and 1.0A.
Check and repair open magnetron circuit Open magnetron wiring between Inverter
and magnetron terminal.
2. Between 1.0A and 2.0A.
Check continuity of D702 in Inverter
PCB.
1. D702 shorted
Replace
H.V.Inverter
(F606Y9X90AP)
2. D702 is OK
Replace
magnetron
Shut off in 3 seconds
after “Start”
1. Less than 0.5A
Check open circuit: Interlock Switch,
DPC, Power Relay and CN701
Replace
defective
component(s),
or
correct switch, cables and connectors.
23
NN-GF574S / NN-GF574M
Содержание NN-GF574S
Страница 2: ...2 NN GF574S NN GF574M ...
Страница 3: ...3 NN GF574S NN GF574M ...
Страница 5: ...1 FEATURE CHART 2 CONTROL PANEL 5 NN GF574S NN GF574M ...
Страница 6: ...3 SCHEMATIC DIAGRAM 6 NN GF574S NN GF574M ...
Страница 25: ...10 EXPLODED VIEW AND PARTS LIST 10 1 EXPLODED VIEW 25 NN GF574S NN GF574M ...
Страница 31: ...11 DIGITAL PROGRAMMER CIRCUIT 11 1 SCHEMATIC DIAGRAM 31 NN GF574S NN GF574M ...
Страница 32: ...32 NN GF574S NN GF574M ...
