7.4. 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
(F606YM300GP)
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.
7.5. How to check the semiconductors using an OHM meter
27
NN-CS596S
Summary of Contents for NN-CS596S
Page 2: ...2 NN CS596S ...
Page 3: ...3 NN CS596S ...
Page 5: ...1 SCHEMATIC DIAGRAM 1 1 BPQ EPG 5 NN CS596S ...
Page 6: ...1 2 WPG SPG 6 NN CS596S ...
Page 28: ...8 EXPLODED VIEW AND PARTS LIST 8 1 EXPLODED VIEW 28 NN CS596S ...
Page 34: ...9 DIGITAL PROGRAMMER CIRCUIT 9 1 SCHEMATIC DIAGRAM 34 NN CS596S ...
Page 35: ...35 NN CS596S 09 06 ChengWei S 6Y4 Printed in China ...
