Panasonic ne-c1153 service manual
Microwave Oven
NE-C1153
NE-C1153C
ORDER NO. MOD0111259C1
E10
© 2001 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
NE-C1153 / NE-C1153C
CONTENTS
Page Page
1 CONTROL PANEL 4
2 OPERATION PROCEDURE
3 SCHEMATIC DIAGRAM (USA)
4 SCHEMATIC DIAGRAM (CANADA)
5 WIRING DIAGRAM
6 DESCRIPTION OF OPERATING SEQUENCE
7 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
8 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE
9 CLEANING INSTRUCTIONS FOR SERVICE
5
10 COMPONEN T TEST PROCEDURE
11 MEASUREMENTS AND ADJUSTMENTS
10
11
12 PROCEDURE FOR MEASURING RADIATION LEAKAGE
12
13 TROUBLES HOOTING GUIDE
14 EXPODED VIEW AND PARTS LIST
13
15
15 PARTS LIST
16 DOOR ASSEMBLY
17
2
20
21
22
23
25
29
32
35
NE-C1153 / NE-C1153C
17 ESCUTCHE ON BASE ASSEMBLY 36
18 PACKING AND ACCESSOR IES
19 WIRING MATERIAL
37
38
20 DIGITAL PROGRAMMER CIRCUIT
21 DIGITAL PROGRAMMER CIRCUIT
39
41
3
NE-C1153 / NE-C1153C
1 CONTROL PANEL
4
2 OPERATION PROCEDURE
NE-C1153 / NE-C1153C
5
NE-C1153 / NE-C1153C
6
NE-C1153 / NE-C1153C
7
NE-C1153 / NE-C1153C
8
NE-C1153 / NE-C1153C
9
NE-C1153 / NE-C1153C
3 SCHEMATIC DIAGRAM (USA)
10
4 SCHEMATIC DIAGRAM (CANADA)
NE-C1153 / NE-C1153C
11
NE-C1153 / NE-C1153C
5 WIRING DIAGRAM
12
NE-C1153 / NE-C1153C
6 DESCRIPTION OF OPERATING SEQUENCE
6.1. Variable power cooking control (MICROWAVE)
The coil of power relays are energized intermittently by the digital programmer circuit, when the oven is set at any power selection
except for High power position. The digital programmer circuit controls the ON-OFF time of power relays contacts in order to vary
the output power of the microwave oven.
The relation between indications on the control panel and the output of the microwave oven is as shown.
NOTE:
The ON/OFF time ratio does not correspond with the percentage of microwave power since approximately 2 seconds are
required for heating of magnetron filament.
6.2. Convection cooking control
The digital programmer circuit controls the ON-OFF time of convection heater in order to control the oven cavity temperature, see
table and figure.
1. The digital programmer circuit generates the power relay control signals at a specific timing.
2. When the oven reaches the selected temperature, the digital programmer circuit senses the temperature through oven temp
sensor and stops supplying 18V DC to the power relays resulting in turn off convection heaters. After the heaters have been
turned off, the oven temperature will continue to increase a while then decrease as shown in figure.
3. When the oven temperature drops below the selected temperature, the digital programmer circuit senses the oven temperature
and starts supplying 18V DC to the coils of power relays alternately.
NOTE:
After convection process, if oven temerature is higher than predetermind temperature, the fan motor will operate for
5 minutes at maximum speed to cool the electric components of the oven.
13
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