Read Panasonic NN-CS894BZPE Service Manual online
Panasonic
Appliances
Microwave
Oven
NN-CS894B
ZPE (CIS Countries)
Microwave Oven
ORDER NO.PAPMOSH1405014CE
2
NN-CS894B
3
NN-CS894B
1
SCHEMATIC DIAGRAM
5
2
DESCRIPTION OF OPERATING SEQUENCE
6
2.1.
Variable power cooking control
6
2.2.
Inverter power supply circuit
6
2.3.
Turbo defrost, Auto cook
6
2.4.
Sensor cooking
6
2.5.
Sensor and digital programmer circuit
6
2.6.
Convection cooking control
7
2.7.
Grill cooking control
7
2.8.
Steam function
7
3
CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 8
3.1.
Check the grounding
8
3.2.
Inverter warnings
8
3.3.
Part replacement.
8
3.4.
Confirm before repair
9
3.5.
When the 10A fuse is blown due to the malfunction of the
short switch:
9
3.6.
Avoid inserting nails, wire etc. through any holes in the
unit during operation.
9
3.7.
Verification after repair
9
3.8.
Sharp edges
9
3.9.
Hot surface
9
4
DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10
4.1.
Cabinet body & Rear cover B
10
4.2.
H.V. Inverter/Magnetron/Digital programmer circuit (D.P.C.)
(AU)/Fan motor/Stirrer motor
11
4.3.
Upper Heater (Heater BU)
16
4.4.
Steam Heater (Heater DU)
16
4.5.
Door assembly/Digital programmer circuit (D.P.C) (FU) &
(D.P.C) (BU)
17
4.6.
Convection motor and convection heater
21
4.7.
Pump
23
4.8.
Front cover
25
5
COMPONENT TEST PROCEDURE
26
5.1.
Primary, Secondary Interlock Switch & Power Relay RY1
26
5.2.
Short Switch
26
5.3.
Magnetron
26
5.4.
FAN MOTOR
26
5.5.
Inverter power supply (U)
27
5.6.
Temperature thermistor
27
6
MEASUREMENTS AND ADJUSTMENTS
28
6.1.
Adjustment of Primary interlock switch, Secondary
interlock switch and Short switch.
28
6.2.
Measurement of microwave output
29
7
TROUBLESHOOTING GUIDE
30
7.1.
(Troubleshooting) Oven stops operation during cooking
31
7.2.
(Troubleshooting) Other problems
32
7.3.
Troubleshooting of inverter circuit (U) and magnetron 33
7.4.
Simple way of H.V. Inverter/magnetron troubleshooting 34
7.5.
How to check the semiconductors using an OHM meter
34
7.6.
H.V. INVERTER MAIN PARTS LIST (F606YBH20GP) 35
8
EXPLODED VIEW AND PARTS LIST
36
8.1.
EXPLODED VIEW
36
8.2.
PARTS LIST
37
8.3.
DOOR & ESCUTCHEON BASE ASSEMBLY
39
8.4.
WATER TANK ASSEMBLY
40
8.5.
WIRING MATERIALS
41
8.6.
PACKING AND ACCESSORIES
42
9
DIGITAL PROGRAMMER CIRCUIT
43
9.1.
SCHEMATIC DIAGRAM (D.P.CIRCUIT AU)
43
9.2.
SCHEMATIC DIAGRAM (D.P.CIRCUIT BU & FU)
45
9.3.
PARTS LIST
47
CONTENTS
Page
Page
4
NN-CS894B