R-874 (serv.man4). Schematic and pictorial diagrams, power and CPU unit circuit, PWB's — Sharp Home Appliance Service Manual (repair manual). Page 8

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R-874M - 38
Figure S-3. CPU Unit Circuit
  CPU UNIT CIRCUIT DIAGRAM
CN1-5
CN1-3
CN1-6 
CN1-10
CN1-1
CN1-2
CN1-4
+
G 8
G 7
G 6
G 5
G 4
G 3
G 2
G 1
G12
G11
G10
G 9
CN1-15
C11 0.1
µ/50v
C10 47
µ/16v
C21 0.1
µ
/50v
C60 330p/50v
C61 330p/50v
C62 330p/50v
C63 330p/50v
D22
D23
D30
R31 15k
R83 15k
R81 510F
R72 100k
R73 100k
R74 100k
CF1 CST4.00MGW
(A)
(E)
(J)
(F)
(Q)
(P)
(K)
(N)
(M)
(D)
(H)
(G)
(R)
R75 100k
R82 28kF
C13
0.1
µ
/50v
C30
C80
C12
0.1
µ
/50v
C14
Q11
DTA143EKA
LD1
LD2
LD3
LD4
LD5
LD10
LD9
LD8
LD7
LD6
Q10
2SA1037AK
GND
51pin
1pin
CN-G
Q40
DTA143EKA
Q28
DTA143EKA
Q25
DTA143EKA
Q24
DTA143EKA
IC1
IXA094DR
OVEN LAMP
TURNTABLE
MOTOR
CONVECTION
MOTOR
FAN MOTOR
POWER
BUZZER
VR
VC
GND
INT
HEATING
ELEMENT
BOTTOM
HEATING
ELEMENT
NOTE 
: IF NOT SPECIFIED, 1/10W 
±
 5%
: IF NOT SPECIFIED, 1SS355
: IF NOT SPECIFIED, 0.01
µ
F / 25V 
HIGH
VOLTAGE
TRANSFORMER
STOP
SWITCH
NC
OVEN
THERMISTOR
Q23
DTA143EKA
Q22
DTA123JKA
Q21
DTA123JKA
Q20
DTA123JKA
(P)
(A)
(D)
(E)
(F)
(G)
(H)
(J)
(K)
(R)
(Q)
R6 620
Q2
2SA1037AK
R4 22
R68 15k
R60 15k
R55
4.7k
R56
1M
R61 15k
R62 15k
R63 15k
R64 15k
R65 15k
R66 15k
R67 15k
(J16) 4.7k
(J17) 
R69 15k
R70 15k
R71 15k
D6
D5
R5 4.7k
R30
4.7k
R15
4.7k
ZD10
UDZ4.3B
(J13) 4.7k
(J14) 4.7k
(J15) 4.7k
(J10)
(J11)
(J12) 10k
R10 1k
R12 15kR
13 15k
R14 15k
R11 4.7k
(N)
(M)
CN1-13
CN1-12
CN1-14
CN1-11
CN1-8
CN1-7
CN1-9
SEG10
C1
1
5
10
15
20
25
30
51
55
60
65
70
75
80
31
35
40
45
50
81
85
90
95
VL1
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AN0
P57
P56
P55
P54
P53
P52
P51
P50
P47
P46
P45
P44
INT1
INT0
P41
P40
P77
P76
P75
P74
SEG11
SEG12
SEG13
SEG14
SEG15
SEG39
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
NC
NC
NC
NC
NC
NC
NC
COM3
COM2
COM1
NC
NC
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38
SEG39
P73
C2
VL2
VL3
COM0
COM1
COM2
COM3
AVSS
VREF
VCC
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
P72
P71
P70
RESET
P81
P80
XIN
XOUT
VSS
P27
P26
P25
P24
P23
P22
P21
P20
P17
P16
CHICKEN QUARTERS (INSTANT COOK)
ROAST PORK
PASTA DISH
RISOTTO
GRATIN
MEAT JOINT
OVEN CHIPS
ROAST POULTRY
BAKED POTATOES
WHOLE POULTRY
ROAST BEEF / LAMB
BREAKFAST
CHICKEN QUARTERS
GRILL
MICRO.  POWER
DUAL CONV. /
GRILL
KG / LB
CONVERSION
KITCHEN TIMER
CLOCK SET
CONV. ( 
˚C ) 
DOWN
LESS
MORE
UP
CLEAR
AUTO MINUTE
STOP
START
PIZZA
nfo
LBS
KG
OZ
PCS
%
˚C
COOK SENSOR DEFROST AUTO
LIQUID CRYSTAL DISPLAY
R-874 S/MANUAL
11/7/01, 10:59 am
38
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