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R-CD1200M
Sharp R-CD1200M Service Manual
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RCD1200M
11
–
4
[2] Figure S-2. Switching
Power Supply Unit Circuit
4,5
Output
Input
R27
R26
IC21
C23
R23
PC1A
2
1
R24
R25
C22
+
R21
L21
ZD21
C13
CN21
2
1
C24
F21
D7
R1
1
C7
C9
+
C10
+
C8
PC1B
4
3
R7
R22
C21
T1
12
2
10
8
7
4
3
FB1
D6
R6
C6
R3
R4
R5
C5
+
C1
CN1
3
2
1
C14
C1
1
C12
R1
R2
TH1
R10
D5
IC1
5
3
2
1
4
6
8
7
NC
DRV
CS
FB
ADJ
VCC
HV
GND
VZ3
D21
D8
L1
D1
R9
D2
D4
D3
Q1
R8
ZD2
VZ1
ZD1
F1
12
VZ2
CD1
38
40
Table of Contents
default chapter
2
Table of Contents
2
Before Servicing
3
Exposure to Excessive Microwave Ener
3
Precautions to be Observed before
3
After Repairing
4
When the Testing Is Completed
4
Chapter 2. Microwave Measurement
5
Chapter 3. Foreword and Warning
6
Chapter 4. Product Description
7
Specifications
7
Grounding Instructions
7
Oven Diagram
8
Chapter 5. Operation Description of Operating Se- Quence
9
Oven Schematic
10
Description and Function of Components
11
Chapter 6. Troubleshooting Guide
13
Chapter 7. Test Procedures
16
A: Magnetron Assembly Test
16
B: Power Transformer Test
16
C: High Voltage Rectifier (1) And/Or (2) Test
16
D: High Voltage Capacitor (1) And/Or (2) Test
17
E: Secondary Interlock Switch (1) And/Or (2) Test
17
F: Primary Interlock System Test
17
G: Monitor Switch (1) And/Or (2) Test
18
H: Blown Minitor Fuse Test
18
I: Fuse 12A (1) (2) Test
19
J: Temperature Fuse Test
19
K: Magnetron Thermistor Test
19
L: Exhaust Thermistor Test
19
M: Noise Filter Test
20
N: Key Unit Test
20
O: Control Unit Test
21
P: Power Unit Test
21
Q: Relay Unit Test
21
R: Antenna Sensor Test
22
S: Microwave Sensor Test
22
Special Function for Servicing
23
Servicing for Brinted Wiring Boards
26
Chapter 9. Precautions for Using Lead
27
Chapter 10. Component Replacement and Adjustment Procedure Warnings
28
Outer Case and Rear Cover Removal
28
Power Transformers (1) And/Or (2) Removal
29
Magnetrons (1) And/Or (2) Removal
29
Magnetron Thermistor Assembly Replacement
29
High Voltage Capacitor and High Voltage Rectifier Assembly Removal
29
Power Supply Cord Replacement
30
How to Release the Positive Lock Connector
30
Exhaust Fan Removal
31
Fan Motors Removal
31
Antenna Motors (Upper and Lower) Removal
31
Power Unit Removal
31
Relay Unit Removal
31
Control Panel Assembly and Control Unit Removal
31
Door Sensing Switch/Secondary Interlock Switches (1), (2) and Monitor Switches (1), (2) Replacement
32
Door Sensing Switch/Secondary Interlock Switches (1), (2) and Monitor Switches (1), (2) Adjustment
32
Door Replacement
33
Door Disassembly
34
Circuit
36
Parts List
43
4
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Sharp R-CD1200M Specifications
General
Brand
Sharp
Model
R-CD1200M
Category
Microwave Oven
Language
English
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