Sharp R-1870 service manual Figure S-2. Touch Control Panel Circuit, R - 1 8 7 0 R - 1 8 7

11

1

2

3

4

5

6

H G F E D C B A

T1 CONTROL UNIT

AC120V

60Hz

MOTOR RUN CAPACITOR

TURNTABLE MOTOR

FAN MOTOR

A5

A1

A3

B1

B3

VRS1 10G471K 1

5

d 2

b a

(J1)

c

C100

RY4

6	D1-D4 : 11ES1
3	D1	D4

4	D2	D3	0.1∝/50v
			C1

/35v∝	R14.3k 1/2w	1.5kR2	1	/50v0.1C3∝	/35v∝	HZ5C2ZD3		ZD4	HZ4A2
1000 C2	ZD1 HZ6A3		ZD2 - HZ16		10 C4		v
							16
+					+		∝
–					–		C50.01
		Q1 2SB1238			R4 510 1/2w				4.7k
		R3 680 1w					Q3
							KRA101M		R8

RY5

D20	Q20 KRA101M	SP40	R403.3k	C9 0.1
				/50v∝

Q4

DTA123ES

R7 4.7k C7

C8

C10 0.1∝/50v

(VP)

R90 100k

Q90 KRA101M

NOTE

: IF NOT SPECIFIEED, 1/4w ± 5%

: IF NOT SPECIFIEED, 1SS270A

: IF NOT SPECIFIEED, 0.01∝F/16v

		FLUORESCENT DISPLAY TUBE
F	1, 2	MIX CONV
F	31, 32
P1	4	DEFROST

SENSOR

1

2

D21	Q21 KRA101M
	Q40	35v

1

IC2 IZA495DR 12 (VP) TURNTABLE ON OFF COOK LBS OZ KG HELP

DAMPER MOTOR

B5

	KRA101M	+	10∝
RY6		–
			C12
D22	Q22 KRA101M

C11

VCC P30

R100 330 1w

5

6 7 8 9

10 11

12

13

15

16

17

18 19

20

22

23 24

25

26

27 28

29

100k

100k

100k

P2

P3

P4

P5

P6

P7

P8

P9

P10

P11

P12

P13

P14

P15

P16

1G

2G

3G

4G

5G

6G

7G

8G

CONVECTION MOTOR

B7

RY7		(J2)	(J4)	(J6)	(J3)	(J5)	(J7)
D23	Q23 KRA101M

VEE	P31
AVSS	P32
VREF	P33
AN7	P34
AN6	P35
AN5	P36

(C) (B) (A)

R91 R92 R93

HOOD LAMP C1

COM

C3

C9

HOOD THERMO

HOOD MOTOR
LOW	C7
HIGH	C5
COM	NO
OVEN LAMP	COM

RY8 D24 RY9 D25 RY10 D26

RY1 D27

Q24 KRA101M

Q25 KRA101M

Q26 KRA101M

–	10∝/35v
	C20
+

Q27

KRC243M

+	/50v0.1∝
–
	C21

Q30

KRA101M

R65 1k

D65

C65 100∝ 16v
+	–

AN4		P37
AN3		P00
AN2		P01
AN1		P02
AN0		P03
P55		P04
P54		P05
P53		P06
P52		P07
P51		P10
P50	IZA719DR	P11
P47		P12
P46		P13
P45		P14
P44		P15
P43		P16
P42		P17
INT1		P20
	IC1
P40		P21
RST		P22
P71		P23
P70		P24
XIN		P25
XOUT		P26
VSS		P27

R76 3.3k	R77 3.3k	R78 3.3k	R79	3.3k	R80	3.3k	R81	3.3k	R82 3.3k
D70		D71	D72	D73		D74		D75	D76

NO

MICRO

RY2 D28

C30

C50

15k

C60

3.6kF	Q60
R64	KRC102M

CF1 4MHz

R75 100k

C74 330pF

G 8

G 1 G 2 G 3 G 4 G 5 G 6 G 7

CUSTOM SENSOR	MINUTE	POPCORN	COMPU	SENSOR	COMPU
HELP REHEAT	PLUS		DEFROST	COOK	BROIL

COM

NO

CONVECTION

HERTER

COM

RY3 D29

D32

Q28 KRA101M

Q29 KRA101M

R30	R50 15k
R31 4.7k	R51 4.7k
D31

R63 220F

R62 36kF

(A)(B)

(C)

C73 330pF

C72 330pF

C71 330pF

LOW MIX

HIGH MIX

COMPU

COMPU

G 9

CONVEC PREHEAT

BAKE

ROAST

ROAST

BAKE

SLOW

1

2

3

4

5

G10

BROIL

COOK

100˚F

150˚F

275˚F

300˚F

325˚F

KITCHEN

6

7

8

9

0

G11

TIMER

CLOCK

350˚F

375˚F

400˚F

425˚F

450˚F

3

4

5

G12

TURNTABLE POWER

KEEP

STOP

START

FAN LIGHT

ON / OFF

LEVEL

WARM

CLEAR

TOUCH ON

C70 330pF

D30

KEY UNIT

E1

E2

E3

E4

E5

E6

F1

F2

F3

AH SENSOR

DOOR

DAMPER

OVEN

SWITCH

SWITCH

THERMISTOR

Figure S-2. Touch Control Panel Circuit

H

G

F

E

D

C

B

A

6

R - 1 8 7 0 R - 1 8 7 1