4 SIMPLE WAY OF H.V. INVERTER/MAGNETRON
TROUBLESHOOTING
Purpose:
Simple way
(3/37 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 37 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
(F606Y8M00AP)
2. D702 is OK
Replace
magnetron
Shut off in 3 seconds
after “Start”
1. Less than 0.5A
Check open circuit: Latch Switch, DPC,
Power Relay and CN701
Replace
defective
component(s),
or
correct switch, cables and connectors.
5 H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y8M00AP)
Ref. No.
Part No.
Part Name & Description
Pcs/Set
Remarks
DB701
B0FBBS000001
BRIDGE DIODE
1
20A, 600V
L701
F50206G00AP
CHOKE COIL
1
Q701
B1JAGV000015
TRANSISTOR SI
1
1000V
T701
A609A8M00AP
H.V. TRANSFORMER
1
(INCLUDING D701,D702,C706,C707)
C701
ECWF5284N300
CAPACITOR
1
0.28µF/500V
C702
ECWF2455N644
CAPACITOR
1
4.5µF/250V
9
NN-SD997S / NN-SD987S / NN-SD967S / NN-SN977S / NN-SN957S / NN-SN947S
Summary of Contents for Genius Prestige NN-SD997S
Page 2: ...2 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 3: ...3 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 5: ...1 SCHEMATIC DIAGRAM 1 1 APH 5 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 6: ...1 2 CPH 6 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 19: ...19 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 20: ...7 2 NN SD967S APH 20 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 21: ...21 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 22: ...7 3 NN SN977S APH 22 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 23: ...23 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 24: ...7 4 NN SN957S APH 24 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 25: ...25 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 26: ...7 5 NN SN947S APH 26 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
Page 27: ...27 NN SD997S NN SD987S NN SD967S NN SN977S NN SN957S NN SN947S...
