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R-939(BK)
Sharp R-939(BK) User Manual
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R939(W)
14 – 9
[6] Jog and Switch Unit Circuit
Figure S-5. Jog and Switch U
nit Circuit
:
IF
NOT
SPECIFIED
0.01uF
/
25V
or
50V
:
IF
NOT
SPECIFIED
1/10W
±5%
R68
15K
R69
15K
R70
15K
15K
R73
R72
C60
C61
C62
C63
R72
--
R75
C60
--
C63
R71
R75
R74
J-6
J-5
J-2
J-1
J-3
J-4
J-8
J-7
J-12
J-9
J-11
J-10
J-13
IC1-6(P73)
VC
IC1-9(P70)
IC1-8(P71)
IC1-7(P72)
VR1
RSW1
GND
R52
R53
R54
15K
4.7K
4.7K
C50
C51
C52
100K
100K
R50
R51
IC1-77(AN4)
IC1-18(P47)
IC1-22(INT1)
CN-J
B13B-PH-K-S
A
B
3
1
2
C
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
SW10
SW13
SW12
SW11
SWITCH
UNIT
100K
x4
330pF/50V
x4
43
45
Table of Contents
Default Chapter
2
Table of Contents
2
Chapter 1. Before Servicing
3
Tion
3
Warning
3
Caution Microwave Radiation
4
Chapter 2. Warning to Service Personnel
5
Chapter 3. Product Specifications
8
Chapter 4. Appearance View Oven
9
Touch Control Panel
9
Chapter 5. Operation Sequence off Condition
10
Microwave Cooking Condition
10
Grill Cooking Condition
11
Convection Cooking Condition
11
Dual Cooking Condition
11
On/Off Time Ratio
12
Automatic Cooking
12
Power Output Reduction
12
Fan Motor Operation
12
Convection Motor Operation
12
Chapter 6. Function of Important Com
13
Door Open Mechanism
13
Monitored Latch Switch (Sw1)
13
Stop Switch (Sw2)
13
Monitor Switch (Sw3)
13
Fuse (F1) 20A 250V
13
Fuse (F2) F8A 250V (Noise Filter)
13
Tc Transformer
13
Thermal Cut-Out (Tc1) 125C (Mg)
13
Thermal Cut-Out (Tc2) 170C (Grill)
13
Noise Filter
14
Turntable Motor (Ttm)
14
Fan Motor (Fm)
14
Convection Motor (CM)
14
Grill Heating Element (Gh)
14
Convection Heating Element (Ch)
14
Convection Cooking System
14
Fire Sensing Feature
14
Open Judge by Thermistor
14
Damper Open-Close Mechanism
14
Microwave Cooking
15
Damper Operation
15
Chapter 7. Troubleshooting Guide Foreword
16
Chart
17
Chapter 8. Test Procedures
18
Procedure A: MAGNETRON TEST
18
Procedure B: HIGH VOLTAGE TRANSFORMER TEST
19
Procedure C: HIGH VOLTAGE RECTIFIER TEST
19
Procedure D: HIGH VOLTAGE CAPACITOR TEST
19
Procedure E: SWITCH TEST
20
Procedure F: THERMISTOR TEST
20
Procedure G: THERMAL CUT-OUT TEST
20
Procedure H: MOTOR WINDING TEST
20
Procedure I: NOISE FILTER TEST
21
Procedure J: BLOWN FUSE (F1) 20A
21
Procedure K: BLOWN FUSE (F2) 8A (NOISE FILTER)
21
Procedure L: GRILL HEATING ELE- MENTS (TOP) and CONVECTION HEATING ELEMENT TEST
21
Procedure M: CONTROL PANEL ASSEMBLY TEST
21
Procedure N: JOG and SWITCH UNIT TEST
22
Procedure O: RELAY TEST
23
Procedure P: PROCEDURES to be TAKEN WHEN the FOIL PATTERN on the PRINTED WIRING BOARD (PWB) IS OPEN
23
Chapter 9. Touch Control Panel Assem
24
Outline of Touch Control Pan
24
Servicing for Touch Control Panel
24
Chapter 10. Precautions for Using Lead
26
Chapter 11. Component Replacement and Adjustment Procedure before Operating
27
Outer Case Removal
27
High Voltage Components Removal
27
High Voltage Transformer Removal
28
Magnetron Removal
28
Control Panel Assembly Removal
28
Fan Motor Rereplacement
28
Turntable Motor Replacement
29
Convection Motor and Convection Heating Element Removal
29
Positive Lock
30
Oven Lamp Socket Removal
30
Parts List
47
4
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Sharp R-939(BK) Specifications
General
Brand
Sharp
Model
R-939(BK)
Category
Microwave Oven
Language
English
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