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R-939(BK)
Sharp R-939(BK) User Manual
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R939(W)
1 – 2
[3] CAUTION MICROW
A
VE RADIA
TION
Personnel
should
not
be
exposed
to
the
microwave
energy
which
may
radiate
from
the
magnetron
or
other
microwave
generating
devices
if
it
is
improperly
used
or
connected.
All
input
and
output
microwave
connections,
waveguides,
flanges
and
gaskets
must
be
secured.
Never
operate
the
device
without
a
microwave
energy
absorbing
load
attached.
Never
look
into
an
open
waveguide
or
antenna
while
the
device
is
energized.
3
5
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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