R-234 (serv.man3). Part 2 Diagrams (29-32) — Sharp Home Appliance Service Manual (repair manual)

Model
R-234 (serv.man3)
Pages
4 Few pages! See other manuals at the bottom of the first or last page.
Size
124.64 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Part 2 Diagrams (29-32)
File
r-234-sm3.pdf
Date

View Sharp R-234 (serv.man3) Service Manual online

R-234 - 29
*INDICATES COMPONENTS WITH
  POTENTIAL ABOVE 250V
Figure 0-1 Oven Schematic-OFF Condition, Door Closed.
Figure 0-2 Oven Schematic-ON Condition, Open Closed.
T: HIGH VOLTAGE
TRANSFORMER
WITH 150˚C THERMOSTAT
IN PRIMARY WINDING
MG: MAGNETRON
 H.V. RECTIFIER
C:
H.V. CAPACITOR
0.91
µ
F/ AC2100V
TURNTABLE MOTOR
FAN MOTOR
OVEN LIGHT
D72
D3
D1
D71
D70
SW3: STOP
SWITCH 
CONTROL UNIT
TC: OVEN THERMAL 
CUT-OUT 125˚C 
SW1: MONITORED 
LATCH SWITCH 
SW2: MONITOR
SWITCH 
B2
B1
A5
A1
A3
OL
FM
TTM
N.O.
N.O.
N.C.
RY-1
COM.
N.O.
COM.
RY-2
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
F1: FUSE 
   ( F8A)
N
L
0.22
µ
/AC250V 
680K/ 0.5W 
10M/ 0.5W 
NOISE SUPPRESSION COIL 
0.0033
µ
/ 250V
0.0033
µ
/ 250V
NOISE FILTER
230V 
˜
 
50Hz 
T: HIGH VOLTAGE
TRANSFORMER
WITH 150˚C THERMOSTAT
IN PRIMARY WINDING
MG: MAGNETRON
 H.V. RECTIFIER
C:
H.V. CAPACITOR
0.91
µ
F/ AC2100V
TURNTABLE MOTOR
FAN MOTOR
OVEN LIGHT
D72
D3
D1
D71
D70
SW3: STOP
SWITCH 
CONTROL UNIT
TC: OVEN THERMAL 
CUT-OUT 125˚C 
SW1: MONITORED 
LATCH SWITCH 
SW2: MONITOR
SWITCH 
B2
B1
A5
A1
A3
OL
FM
TTM
N.O.
N.O.
N.C.
RY-1
COM.
N.O.
COM.
RY-2
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
F1: FUSE 
    (F8A)
N
L
0.22
µ
/AC250V 
680K/ 0.5W 
10M/ 0.5W 
NOISE SUPPRESSION COIL 
0.0033
µ
/ 250V
0.0033
µ
/ 250V
NOISE FILTER
230V 
˜
 
50Hz 
SCHEMATIC DIAGRAMS
R-234 - 30
Figure S-1. Pictorial Diagram
HIGH VOLTAGE COMPONENTS
SW1:
MONITORED 
LATCH SWITCH
SW2:
MONITOR 
SWITCH
TTM:
TURNTABLE
MOTOR
COM.
COM.
YLW
N
L
RED
WHT
YLW
N.C.
SW3: STOP SWITCH
WHT
WHT
WHT
YLW
YLW
YLW
WHT
YKW
RED
G/Y
CONTROL UNIT
WHT
WHT
YLW
BLU
BRN
RED
RED
TC:
THERMAL CUT-OUT
(OVEN)
OL:
OVEN 
LAMP
SP30
IC1
CN-A
RY1
CN-B
RY2
1
12
5
RED
YLW
WHT
CN-A
CN-B
2
RED
1
3
4
5
WHT
RED
WHT
WHT
RED
YLW
WHT
2
1
N.O.
COM.
N.O.
FM:
FAN MOTOR
NOISE FILTER
WHT
H.V.WIRE B
MG: MAGNETRON
C: 
H.V. 
CAPACITOR
H.V.
RECTIFIER
T: HIGH VOLTAGE
    TRANSFORMER
POWER SUPPLY CORD
LIVE
NEUTRAL
WHT
YLW
PICTORIAL DIAGRAM
R-234 - 31
Figure S-2. Control Panel Circuit
CONTROL PANEL CIRCUIT DIAGRAM
+
+
+
+
+
+
D1:1N4005E 
VRS1
A1
COM
NO
B1
B2
A5
STOP SWITCH
OVEN LAMP
TURNTABLE
MOTOR
FAN MOTOR
HIGH
VOLTAGE
TRANSFORMER
AC(N)
FAN 
MOTOR
A
C230V
5
0Hz
AC(L)
D80
A
Kg
B
C
D3 1N4005E
D70
1N4005E
Q20
KRA
101M
Q21
KRC105M
Q70
KRC105M
Q30
Q40
VC
KRC101M
2SA
1267Y
RY1
10G471K
RY2
D71
1N4005E
D74
C43
C44
C80
C42
C21
C10 0.1
µ
/50v
D10
R10 27k
R11 27k
R12 10k
SP30
3.3k
ZD40
HZ4C3
1k
2w
1k
2w
1k
2w
1k
2w
1k
2w
R5
R30
10k 
R60
10k 
R61
4.7k
4.7k
R62
R63
15k
R20 8.2k
R81 4.7k
   R72 8.2k
R80 15k
(J3)
(J2)
(J4)
(J6)
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
VSS
R70
S1
S2
S3
S4
S5
S12
S11
S10
S9
S8
S7
S6
C3
C2
C1
22
25
30
35
40
42
21
1
5
10
15
R71
R72
R73
R81
R83
R90
R92
XIN
XOUT
RESET
HOLD
VLC
COM1
COM2
COM3
COM4
VDD
R91
INT2
INT1
AIN3
AIN2
AIN1
AIN0
R63
R62
R61
R60
(J5)
(J7)
R31 15k
R64 100k
R42
10kF
R50
1k 
R41
1.5k 1/2w 
R40
ZD21
ZD20
ZD1 HZ12C1
HZ12C1
HZ12C1
C70 47
µ
/35v
C20 220
µ
/35v
C1 220
µ
/16v
C71 100
µ
/35v
C22 0.1
µ
/50v
IC1  IXA084DR
STOP
Express
cook &
DEFROST
+ 1 min
NOTE :
IF NOT SPECIFIED, 1/4 
±
 5%
LIQUID CRYSTAL DISPLAY
SW1
SW2
SW3
SW4
SW60
C40 0.1
µ
/50v
0.1
µ
/50v
C41 47
µ
/16v
C61  
C60 
C50 33p/50v
10
µ
/35v
R73 15k
R70 360 1w
R71 360 1w
ZD71 HZ7C2
ZD70 HZ7C2
D72
D73
D2
LED3
LED2
LED1
1N4005E
D20
R4
R3
R2
R1
(J1)
a
b
d
c
IF NOT SPECIFIED, 1SS270A
IF NOT SPECIFIED, 0.01
µ
F / 16v
A3
R-234 - 32
Figure S-4. Printed Wiring Board
 PRINTED WIRING BOARD DIAGRAM
LED1
LED2
D3
RY2
D74
R70
R71
ZD71
6
B
B
1
1
2
4
R80 
RW
CN - C
1
6
(J5)
(J7)
(J6)
(J4)
(J2)
(J3)
(R60) 
R43 
R11
C44
C42
R4
R50
R42
E
B
Q30
Q40
1
E
B
C43 
C40 
C50 
C41 
JW1 
R20
R40
R72
(R61) 
(R62) 
(R63) 
4
5
E
E
Q20
Q21
(WH - 1)
C70
C21
D20
D70
1
5
(J1)
RY1
D71
D1
ZD70
Q70
D73
D72
D80
(R64)
R81
(R65)
3
ZD20
ZD21
(SW4)
(SW3)
(SW2)
(SW1)
IC1
(JSW2)
JW1
,F
R73
C71
C20
C22
R12
21
1
DIP
WARNING :
WARNING :
TRANSLESS
22
42
2
(C61)
(C60)
C10
VRS1
R1
B
E
R2
R3
R4
AC LINE VOLTAGE IS SUPPLIED TO ALL PARTS
R5
(CF1)
R10
R31
D10
D2
C1
R30
ZD1
SP30
ZD40
C
B
A
(SW7)
(SW6)
(SW5)
4
1
(WH - 1)
CN - A
LED3
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Here you can view online or download Sharp R-234 (serv.man3) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp R-234 (serv.man3) Microwave Oven. Information contained in Sharp R-234 (serv.man3) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).