Sharp R-1874TYA User Manual

3
R-1874TYA
UPDATE
Oven Schematic - Off Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. Door Closed
2. CLOCK APPEARS ON DISPLAY
Circuits / Wire colors subject to change without notice
RY10
RY9
RY6
B5
A5
SWITCH
INTERLOCK
SECONDARY
HOOD
CUTOUTS
THERMAL
HOOD FAN
C1
CAPACITOR
A3
CONTROL UNIT
N.O.
C3
FAN MOTOR
OL
120VAC
60Hz
MOTOR
HOOD
A1
GND
C5
C7
DM
RY1
TTM
OVEN LAMP
CM
COM.
STIRRER MOTOR
TEMPERATURE
FUSE
MAGNETRON
F1
F2
F3
AH SENSOR
CONVECTION MOTOR
MONITOR
HEATING
ELEMENT
SWITCH
FM
RY7
RY4
RY5
VOLTAGE
HIGH
CAPACITOR
MAGNETRON
HIGH
VOLTAGE
RECTIFIER
TRANSFORMER
POWER
NOISE
RESISTOR
C9
RY8
TURNTABLE MOTOR
DAMPER MOTOR
B7
RY1
STM
RY3
RY2
COM.
RY2
COM.
RY3
RY2
N.O.
RY1
DAMPER
THERMISTOR
SWITCH
SENSING
SWITCH
DOOR
N.O.
RY3
E5
E1
E2
E6 E3
E4
PRIMARY INTERLOCK RELAY
MONITOR
FUSE (20A)
NOISE
FILTER
(CONV. SIDE)
THIRD DOOR
SWITCH
HOOD
LAMP
HL
HL
C1
C2
C3
CN201
#1(+)
#2(-)
B1
B3
VRS1
CN101
#3(L)
#1(N)
SWITCHING
D5
D3
REGULATOR
D1
D7
FUSE1
H
N
1. Check AC power into CN101,
if none check Main Harness.
2. Check DC power across CN201 (DC15V),
if none replace Switching Power Supply Unit
3. Check for DC getting from Switching Power
Supply Unit to PSU/ CPU, if none check Main
Harness.
SWITCHING POWER SUPPLY TEST PROCEDURE
CN101
CN201

Sharp R-1874TYA Specifications

General

Style	over-the-range
Color	stainless steel
Total Capacity	1.1 cubic feet
Sensor Cooking	yes
Child Lock	yes
Timer	yes
Microwave Power	850 watts
Current	13.2 amperes

Weight and Dimensions

Depth	15.28 inches
Height	16.34 inches
Width	29.94 inches
Net Weight	71 pounds