PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE EXPO-
SURE TO EXCESSIVE MICROWAVE ENERGY
BEFORE SERVICING
CHAPTER 1. WARNING TO SERVICE PERSONNEL
CHAPTER 2. MICROWAVE MEASUREMENT PRO-
CEDURE
CHAPTER 3. FOREWORD AND WARNING
CHAPTER 4. PRODUCT DESCRIPTION
CHAPTER 5. GENERAL INFORMATION
CHAPTER 6. OPERATION
CHAPTER 7. TROUBLESHOOTING GUIDE
CHAPTER 8. TEST PROCEDURES
CHAPTER 9. TOUCH CONTROL PANEL ASSEMBLY
CHAPTER 10. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 11. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
CHAPTER 12. CIRCUIT DIAGRAMS
Parts List
S7607R21LCFP/
LIGHT DUTY COMMERCIAL
MICROWAVE OVEN
R-21LCF
SERVICE MANUAL
R21LCF
MODEL
CONTENTS
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
In the interest of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens contain
circuitry capable of producing very high voltage and current, con-
tact with following parts may result in a severe, possibly fatal,
electrical shock. (High Voltage Capacitor, High Voltage Power
Transformer, Magnetron, High Voltage Rectifier Assembly, High
Voltage Harness etc..)
1000W/R-21LC
C
O
M
M
E
R
C
I
A
L
M
I
C
R
O
W
A
V
E
O
V
E
N
TIME GUIDE FORONE SERVING
15
- 30
sec.
Bagel, Roll
Muffin,
Pastr
y
Pie
Slice
30-60sec.
Hot Dog
PizzaSlice
Small
Sandwich
1-2
min.
Beverage, Soup
LargeSand
wich
Popc
orn, 1.5o
z.
2-3
m
in.
Casserole
, Stew
Chili, Ch
owder
Popcor
n, 3.5oz.
With
th
e do
or closed,turn t
h
e t
i
m
e
r to
the desired tim
e. Oven wil
lb
egin
o
pera
ti
n
g
i
mmediately.
Toshu
toven off ma
nually,returnti
mer
to "0".
INSTRUCTIONS
0
10
20
30
40
50
1
1.5
2
2.5
3
4
5
6
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
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General
Weight and Dimensions
