Sharp R-22AM Service Manual

40
R-22AM
R-23AM
R-23AT
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. MANUAL/ REPEAT KEY TOUCHED [R-23AT].
3. COOKING TIME PROGREMMED.
4. START PAD TOUCHED.
Figure O-3 Oven Schematic-Cooking Condition
NOTE: Indicates components with potential above 250 V.
Figure O-2 Oven Schematic-IDLE Condition (Door opened condition)
SCHEMATIC
NOTE: CONDITION OF OVEN
1. FOR 1MINUTE AFTER DOOR CLOSED.
2. : APPEAR ON DISPLAY.
NOISE FILTER
SW1: 
1ST LATCH SWITCH
(PRIMARY INTERLOCK SWITCH)
SW4: MONITOR SWITCH
NOISE SUPPRESSION COIL
DISCHARGE RESISTOR 680 kΩ 1/2W
DISCHARGE RESISTOR 10 MΩ 1/2W
LINE CROSS CAPACITOR 0.22µF/ AC250V
LINE CROSS CAPACITOR 
10000 pF/ AC250V
LINE CROSS CAPACITOR 
10000 pF/ AC250V
A7
A5
TF3:BLOWER MORTOR  TEMP. FUSE 120C °
TF4:OVEN TEMP.   FUSE 120C °
F2: FUSE F6.3A
SW2: 2ND LATCH SWITCH
F4: FUSE M8A
A1
TF1: MAGNETRON (MG1)
 TEMP. FUSE 150 °C
TF2: 
MAGNETRON (MG2)
TEMP. FUSE 150°C
OVEN LAMP
BLOWER MOTOR
A3
CONTROL
UNIT
B1
SW3: 
3RD LATCH SWITCH
OVEN  THERMISTER (1)
OVEN  THERMISTER (2)
SW5: 
STOP 
SWITCH
TAB3
TAB2
TAB1 TAB4
T1: HIGH VOLTAGE TRANSFORMER
H. V. RECTIFIER
MG1: MAGNETRON
F3: FUSE M8A
SM
UPPER STIRRER MOTOR
LOWER STIRRER MOTOR
SM
BM
RY1
B2
B3
H1
H3
MAGNETRON THERMISTER
H. V. RECTIFIER
MG2: MAGNETRON
T2: HIGH VOLTAGE TRANSFORMER
L BLK
WHT
N
OL
BLU
NEUTRAL LIVE
GRN/YLW
BRN
EARTH
R1: MONITOR RESISTOR 4.3Ω/20W
F5:
H.V.FUSE
0.6 A/ 5 kV (R-22AM)
0.75 A/ 5 kV

R- 23AT 

R-23AM
F6:
H.V.FUSE
0.6 A/ 5 kV (R-22AM)
0.75 A/ 5 kV

R- 23AT 

R-23AM
F1 : WEAK POINT A017
RY2 (R-22AM/23AM) RY3 (R-23AT)
RY4 (R-23AT) RY3 (R-22AM/23AM)
230V~50Hz
C1:H.V. CAPACITOR
 0.94 µF/ AC2300V
C2:H.V. CAPACITOR
 0.94 µF/ AC2300V
NOISE FILTER
SW1: 
1ST LATCH SWITCH
(PRIMARY INTERLOCK SWITCH)
SW4: MONITOR SWITCH
NOISE SUPPRESSION COIL
DISCHARGE RESISTOR 680 kΩ 1/2W
DISCHARGE RESISTOR 10 MΩ 1/2W
LINE CROSS CAPACITOR 0.22µF/ AC250V
LINE CROSS CAPACITOR 
10000 pF/ AC250V
LINE CROSS CAPACITOR 
10000 pF/ AC250V
A7
A5
TF3:BLOWER MORTOR  TEMP. FUSE 120C °
TF4:OVEN TEMP.   FUSE 120C °
F2: FUSE F6.3A
SW2: 2ND LATCH SWITCH
F4: FUSE M8A
A1
TF1: MAGNETRON (MG1)
 TEMP. FUSE 150 °C
TF2: 
MAGNETRON (MG2)
TEMP. FUSE 150°C
OVEN LAMP
BLOWER MOTOR
A3
CONTROL
UNIT
B1
SW3: 
3RD LATCH SWITCH
OVEN  THERMISTER (1)
OVEN  THERMISTER (2)
SW5: 
STOP 
SWITCH
TAB3
TAB2
TAB1 TAB4
T1: HIGH VOLTAGE TRANSFORMER
H. V. RECTIFIER
MG1: MAGNETRON
F3: FUSE M8A
SM
UPPER STIRRER MOTOR
LOWER STIRRER MOTOR
SM
BM
RY1
B2
B3
H1
H3
MAGNETRON THERMISTER
H. V. RECTIFIER
MG2: MAGNETRON
T2: HIGH VOLTAGE TRANSFORMER
L BLK
WHT
N
OL
BLU
NEUTRAL LIVE
GRN/YLW
BRN
EARTH
F5:
H.V.FUSE
0.6 A/ 5 kV (R-22AM)
0.75 A/ 5 kV

R- 23AT 

R-23AM
F6:
H.V.FUSE
0.6 A/ 5 kV (R-22AM)
0.75 A/ 5 kV

R- 23AT 

R-23AM
R1: MONITOR RESISTOR 4.3Ω/20W
F1 : WEAK POINT A017
RY2 (R-22AM/23AM) RY3 (R-23AT)
RY4 (R-23AT) RY3 (R-22AM/23AM)
230V~50Hz
C1:H.V. CAPACITOR
 0.94 µF/ AC2300V
C2:H.V. CAPACITOR
 0.94 µF/ AC2300V

Sharp R-22AM Specifications

General

Brand	Sharp
Model	R-22AM
Category	Microwave Oven
Language	English