Simple Way Of H.v. Inverter/Magnetron; Troubleshooting; H.v.inverter Board Main Parts List; (F606Y8M00Ap) - Panasonic NN-SD698S Service Manual

NN-SD698S / NN-ST678S / NN-ST658W
8.4. 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"
8.5. H.V.INVERTER BOARD MAIN PARTS LIST (F606Y8M00AP)
Ref. No. Part No.
DB701 B0FBBS000001
L701 F50206G00AP
Q701 B1JAGV000015
T701 A609A8M00AP
C701 ECWF5284N300
C702 ECWF2455N644
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
22
Remedy:
and magnetron terminal.
Replace H.V.Inverter(F606Y8M00AP)
Replace magnetron
Replace defective component(s),
correct switch, cables and connectors.
Remarks
or