Simple Way Of H.v. Inverter/Magnetron Troubleshooting; V.inverter Board Main Parts List (F606Y8M00Ap) - Panasonic NN-SD297S Service Manual

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:
Shut off in 37 seconds 1. Between 0.5A and 1.0A.
after "Start".
2. Between 1.0A and 2.0A.
Shut off in 3 seconds 1. Less than 0.5A
after "Start"
5 H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y8M00AP)
Ref. No. Part No.
DB701 B0FBBS000001
L701 F50206G00AP
Q701 B1JAGV000015
T701 A609A8M00AP
C701 ECWF5284N300
C702 ECWF2455N644
NN-SD297S / NN-SD277S / NN-SD277B / NN-SD277W / NN-SA247S / NN-P295WFX / NN-S255WFX / NN-S245WFX
Ammeter reading is:
Check and repair open magnetron circuit Open magnetron wiring between Inverter
Check continuity of D702 in Inverter PCB.
1. D702 shorted
2. D702 is OK
Check open circuit: Latch Switch, DPC,
Power Relay and CN701
Part Name & Description
BRIDGE DIODE
CHOKE COIL
TRANSISTOR SI
H.V. TRANSFORMER
CAPACITOR
CAPACITOR
To do:
Pcs/Set
1 20A, 600V
1
1 1000V
1 (INCLUDING D701,D702,C706,C707)
1 0.28µF/500V
1 4.5µF/250V
11
Remedy:
and magnetron terminal.
Replace H.V.Inverter(F606Y8M00AP)
Replace magnetron
Replace defective component(s),
correct switch, cables and connectors.
Remarks
or