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R-969IN
Sharp R-969IN User Manual
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R969(W)
14 – 7
[4] Control Unit Circuit
Figure S-3. CPU Unit Circuit
:
IF
NOT
SPECIFIED
1/10W
±5%
:
IF
NOT
SPECIFIED
1SS355
:
IF
NOT
SPECIFIED
0.01
uF/25V
HIGH
VOLTAGE
TRANSFORMER
STOP
SWITCH
DAMPER
SWITCH
OVEN
THERMISTOR
NC
VC
VR
VA
BUZZER
POWER
CONTROL
DAMPER
MOTOR
FAN
MOTOR
CONVEC
MOTOR
CONVEC
HEATING
ELEMENT
GRILL
HEATING
ELEMENT
OVEN
LAMP
TURNTABLE
MOTOR
INT
GND
NOTE
:
ZD10
UDZ4.3B
GND
4MHz
P03
P02
P01
P00
P37
P36
P35
P34
P33
P32
P31
P30
P85
P84
P83
P82
P81
P80
VCC
VREF
AVSS
AN7
AN6
AN5
AN4
AN3
C1
3
C12
C1-5
R10
1K
Q11
DTA143EKA
C14
CN-F
See
Fig.
S-4
IC1
See
Fig.
S-5
See
Fig.
S-5
60
55
75
70
CF1
(A)
(H)
(G)
(F)
(E)
(D)
(B)
65
P13
P12
P11
P10
P07
P06
P05
P04
P15
P14
50
45
C100
IC4
AT24C01A
(J10)
(J11)
4.7K
(J12)
(J13)
4.7K
(J14)
(J15)
4.7K
(J16)
(J17)
4.7K
(J18)
(J19)
4.7K
(J20)
(J21)
4.7K
(J22)
(J23)
4.7K
(I)
(J)
(K)
(M)
(N)
(J)
D90
MA152WA
R94
10K
IC2
3.57KD
R96
0.1uF/50
C90
R92
1.8KF
R93
360KF
R90
1W
330
R91
3.32KD
R95
C92
C93
47K
R97
47K
C91
R98
620K
R99
300K
R100
150KF
R101
75KF
R102
37.4KF
BA4558F
2
3
1
8
4
C10
47uF/16V
F-1
F-2
F3
(Q)
(P)
(R)
LD10
LD14
LD13
LD12
LD11
LD19
LD15
LD16
LD17
LD18
6
5
7
IC2
1/2
0.1uF/50V
(N
)
C1-3
C1-6
C1-10
C2-2
C11
0.1uF/50V
Q10
2SA1037AK
Q30
DTA143EKA
D5
D6
R4
27
R5
4.7K
Q2
AN2
AN1
P87
P86
AN0
P77
P76
P75
P74
P73
P72
P70
P57
P55
P56
P54
P53
P52
P51
P50
P47
P45
P46
1
5
10
15
20
P71
INT0
CNVSS
RESET
P41
P40
XIN
XOUT
VSS
40
25
30
35
P27
P26
P25
P24
P23
P22
P21
P20
P44
INT1
P17
P16
C15
INT0
R5
5
4.7
K
R56
1M
C16
0.1uF
50V
B3B-EH-TS
AH
SENSOR
80
61
41
R11
4.7K
R12
4.7K
10K
A1
A2
A0
GN
D
TS
VCC
SC
L
SDA
C1-12
C1-13
C1-14
C1-1
C1-2
(Q)
(H)
(G)
(K)
R81
R83
R82
(P)
(M)
(R)
C1-4
C80
C8
3
15K
R85
R84
4.7K
C2-1
R31
15K
C30
R30
4.7K
Q26
Q27
Q28
D20
D21
D30
DTA123JKA
DTA123JKA
DTA123JKA
11.5KF
15K
430F
R80
200KF
C1-9
C1-11
C2-4
C2-3
C1-8
C1-7
C1-15
(A)
(F)
(E
)
(D)
(B)
DTA143EKA
DTA143EKA
DTA143EKA
DTA143EKA
DTA143EKA
Q21
Q20
Q23
Q24
Q25
C20
0.1uF/50V
47K
R58
R48
47K
R47
4.7K
R57
(I)
R13
1K
KTA1661
44
46
Table of Contents
default chapter
2
Table of Contents
2
Chapter 1. Before Servicing
4
Tion
4
Warning
4
Caution Microwave Radiation
5
Chapter 2. Warning to Service Personnel
6
Chapter 3. Product Specifications
9
Chapter 4. Appearance View Oven
10
Touch Control Panel
10
Chapter 5. Operation Sequence off Condition
11
Microwave Cooking Condition
11
Grill Cooking Condition
12
Convection Cooking Condition
12
Dual Cooking Condition
12
On/Off Time Ratio
12
Automatic Cooking
13
Power Output Reduction
13
Fan Motor Operation
13
Convection Motor Operation
13
Absolutehumiditysensor (Ah Sensor)Cooking Condition
13
Ah Sensor Cooking Sequence
13
Chapter 6. Function of Important Com
14
Door Open Mechanism
14
Monitored Latch Switch (Sw1)
14
Stop Switch (Sw2)
14
Monitor Switch (Sw3)
14
Fuse (F1) 20A 250V
14
Fuse (F2) F8A 250V (Noise Filter)
14
Tc Transformer
14
Thermal Cut-Out (Tc1) 125C (Mg)
14
Thermal Cut-Out (Tc2) 170C (Grill)
14
Noise Filter
15
Turntable Motor (Ttm)
15
Fan Motor (Fm)
15
Convection Motor (CM)
15
Grill Heating Element (Gh)
15
Convection Heating Element (Ch)
15
Convection Cooking System
15
Fire Sensing Feature
15
Open Judge by Thermistor
15
Damper Open-Close Mechanism
16
Chapter 7. Troubleshooting Guide Foreword
17
Chart
18
Chapter 8. Test Procedures
19
Procedure A: MAGNETRON TEST
19
Procedure B: HIGH VOLTAGE TRANSFORMER TEST
20
Procedure C: HIGH VOLTAGE RECTIFIER TEST
20
Procedure D: HIGH VOLTAGE CAPACITOR TEST
20
Procedure E: SWITCH TEST
21
Procedure F: THERMISTOR TEST
21
Procedure G: THERMAL CUT-OUT TEST
21
Procedure H: MOTOR WINDING TEST
21
Procedure I: NOISE FILTER TEST
22
Procedure J: BLOWN FUSE (F1) 20A
22
Procedure K: BLOWN FUSE (F2) 8A (NOISE FILTER)
22
Procedure L: GRILL HEATING ELE- MENTS (TOP) and CONVECTION HEATING ELEMENT TEST
22
Procedure M: CONTROL PANEL ASSEMBLY TEST
22
Procedure N: KEY UNIT TEST
23
Procedure O: RELAY TEST
23
Procedure P: PROCEDURES to be TAKEN WHEN the FOIL PATTERN on the PRINTED WIRING BOARD (PWB) IS OPEN
24
Procedure Q: AH SENSOR TEST
24
Chapter 9. Touch Control Panel Assem
26
Outline of Touch Control Pan
26
Absolute Humidity Sensor Circuit
26
Servicing for Touch Control Panel
27
Chapter 10. Precautions for Using Lead
29
Chapter 11. Component Replacement and Adjustment Procedure before Operating
30
Outer Case Removal
30
High Voltage Components Removal
30
High Voltage Transformer Removal
31
Magnetron Removal
31
Control Panel Assembly Removal
31
Graphic Sheet and Membrane Switch Replacement
31
Fan Motor Rereplacement
32
Turntable Motor Replacement
32
Convection Motor and Convection Heating Element Removal
33
Positive Lock Connector Removal
33
Oven Lamp Socket Removal
34
Power Supply Cord Replacement
34
Grill Heating Elements Removal
34
Monitored Latch Switch, Monitor Switch and Stop Switch Removal
35
Monitored Latch Switch, Stop Switch and Monitor Switch Adjustment
35
Door Replacement
35
Chapter 12. Microwave Measurement
37
Chapter 13. Test Data at a Glance
38
Chapter 14. Circuit Diagrams
39
Oven Schematic
39
Pictorial Diagram (Figure S-1)
43
Power Unit Circuit
44
Control Unit Circuit
45
Indicator Circuit
46
Key Unit Circuit
47
Printed Wiring Board
48
Parts List
49
4
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Sharp R-969IN Specifications
General
Brand
Sharp
Model
R-969IN
Category
Microwave Oven
Language
English
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