CAUTION
1.
High voltage is present at the high voltage terminal of the high
voltage transformer during any cook cycle.
2.
It is neither necessary nor advisable to attempt measurement of
the high voltage.
3.
Before touching any oven components, or wiring, always unplug
the oven from its power source and discharge the high voltage
capacitor.
10.1. High voltage transformer
1. Remove connections from the transformer terminals and
check continuity.
2. Normal (cold) resistance readings should be as follows:
Secondary winding - Approx. 80
Ω
~ 120
Ω
Filament winding - Approx. 0
Ω
Primary winding (0V - 208V). Approx. 0
Ω
~ 3
Ω
10.2. High voltage capacitor
1. Check continuity of capacitor with ohmmeter on highest
OHM scale.
2. A normal capacitor will show continuity for a short time, and
then indicate 9M
Ω
once the capacitor is charged.
3. A shorted capacitor will show continuous continuity.
4. An open capacitor will show constant 9M
Ω
.
(Due to internal 9M
Ω
resistor)
5. Resistance between each terminal and chassis should be
infinite.
10.3. Diode
1. Isolate the diode assembly from the circuit by disconnecting
the leads.
2. With the ohmmeter set on the highest resistance scale,
measure the resistance across
the diode
terminals.
Reverse the meter leads and again observe the resistance
reading. A meter with 6V, 9V or higher voltage batteries
should be used to check the front-to-back resistance of the
diode, otherwise infinite resistance may be read in both
directions.
A normal diode’s resistance will be infinite in one direction
and several hundred K
Ω
in the other direction.
10.4. Magnetron
Continuity checks can only indicate an open filament or a
9.5. Replacement of the cavity light
bulb
CAUTION unplug the unit from electricity supply before
replacing the Oven Lamp.
If the Oven Lamp burns out, you can replace it yourself by
following these simple directions.
1. Unscrew the Oven Lamp Cover which is located on the left
side of the cabinet.
2. Replace the old lamp with a new 220/240V, 25W max., E-
14 lamp.
3. Close the Oven Lamp Cover with screw.
Caution: Do not clean this appliance with a water jet.
shorted magnetron. To diagnose for an open filament or
shorted magnetron.
1. Isolate magnetron from the circuit by disconnecting the
leads.
2. A continuity check across magnetron filament terminals
should indicate one ohm or less.
3. A continuity check between each filament terminal and
magnetron case should read open.
10.5. Membrane key board
(Membrane switch assembly)
Check continuity between switch terminals, by pressing an
appropriate pad on the key board.
The contacts assignment of the respective pads on the key
board is as shown in the schematic diagram of DPC.
10 COMPONENT TEST PROCEDURE
21
NE-C1153 / NE-C1153C
Summary of Contents for Combi Wave NE-C1153
Page 4: ...1 CONTROL PANEL 4 NE C1153 NE C1153C ...
Page 5: ...2 OPERATION PROCEDURE 5 NE C1153 NE C1153C ...
Page 6: ...6 NE C1153 NE C1153C ...
Page 7: ...7 NE C1153 NE C1153C ...
Page 8: ...8 NE C1153 NE C1153C ...
Page 9: ...9 NE C1153 NE C1153C ...
Page 10: ...3 SCHEMATIC DIAGRAM USA 10 NE C1153 NE C1153C ...
Page 11: ...4 SCHEMATIC DIAGRAM CANADA 11 NE C1153 NE C1153C ...
Page 12: ...5 WIRING DIAGRAM 12 NE C1153 NE C1153C ...
Page 26: ...26 NE C1153 NE C1153C ...
Page 27: ...27 NE C1153 NE C1153C ...
Page 28: ...28 NE C1153 NE C1153C ...
Page 29: ...14 EXPODED VIEW AND PARTS LIST 29 NE C1153 NE C1153C ...
Page 30: ...30 NE C1153 NE C1153C ...
Page 31: ...31 NE C1153 NE C1153C ...
Page 40: ...40 NE C1153 NE C1153C ...
Page 41: ...21 DIGITAL PROGRAMMER CIRCUIT PARTS LIST 41 NE C1153 NE C1153C ...
