Sharp R1870 Service Manual

9
R-1870
R-1871
PROCEDURE
LETTERCOMPONENT TEST
G12
CUSTOM
HELP
KITCHEN
TIMER
POWER
LEVELKEEP
WARM
TURNTABLE
ON / OFF
CONVEC
BROIL
FAN LIGHT PREHEAT
CLOCK SENSOR
REHEAT
SLOW
COOKLOW MIX
BAKE
1100 F2150 F3275   F4300 F5325 F
6350 F7375 F8400 F9425 F0450 F HIGH MIX
ROAST
STOP
CLEARSTART
TOUCH ONSENSOR
COOK MINUTE
PLUSCOMPU
DEFROST
COMPU
ROASTCOMPU
BAKE COMPU
BROIL POPCORNG11 G10G 9 G 8G 1 G 2 G 3 G 4 G 5 G 6 G 7
Note: When defective components,  the Control Unit or Key Unit are replaced, the defective part...

10
R-1870
R-1871
6
45
12
3
6
45
12
3 A
B
C
D
E
F
G
HA
B
C
D
E
F
G
H
Figure S-1. Pictorial Diagram
HIGH VOLTAGE
CAPACITOR
H.V.
RECTIFIER
HIGH VOLTAGE COMPONENTS
MAGNETRON
POWER TRANSFORMER
F
FA
Power Supply
cord 120V 60Hz
GRNBLK
BLK
1 2 3
WHT
GRNBLK
HOOD FAN 
THERMAL
CUT-OUTCONVECTION
MOTOR
HEATING
ELEMENT
THERMISTOR TEMPERATURE FUSE (MG.)
B
L
KB
L
K
B
R
N
R
E
D
BLK WHT
RED
BRN
WHT
BLK
FAN
MOTORDAMPER
MOTOR DAMPER
SWITCH
TURNTABLE
MOTOR
GRYBRN
GRY
BRN
ORG
WHTHOOD LAMPS
& SOCKETS
GRY
Blue 
Marking 
Blue...

11
R-1870
R-1871
6
45
12
3
6
45
12
3 A
B
C
D
E
F
G
HA
B
C
D
E
F
G
H
Figure S-2. Touch Control Panel Circuit
+
–
+
–
+ –
+–
A5
A1
A3
B1
B3
B5
B7
C1
C3
C9
C7
C5
F3G12 G11 G10G 9
G 8G 1 G 2 G 3 G 4 G 5 G 6 G 7
F2 F1 E6 E5
Q20 KRA101MQ90 KRA101M
VRS1
C1 0.1∝/50v D20 D21 D22 D23 D24 D25 D26 D27 D28
D32
D31D29
C2 1000∝/35v
C3 0.1∝/50v
C9
0.1∝/50v
C10 0.1∝/50v
C74 330pF
C73 330pF
C72 330pF
C71 330pF
C70 330pF
C50 C60 C30
D30
DOOR
SWITCHDAMPER
SWITCH AC120V
60Hz
MOTOR RUN
CAPACITOR
TURNTABLE
MOTOR 
DAMPER
MOTOR...

12
R-1870
R-1871PARTS LIST
Note: The parts marked “
∆ ∆∆ ∆
∆” may cause undue microwave exposure.
The parts marked “*” are used in voltage more than 250V.  § MARK: PARTS DELIVERY SECTION.
ELECTRIC PARTS
1- 1 FH-DZB017MRY0 MHigh voltage rectifier assembly   1 AM
1- 2 RC-QZB234MRE0 MHigh voltage capacitor   1 AR
1- 3 QFS-TA013WRE0 MTemperature fuse 150½C   1 AG
1- 4 RHET-A174WRE0 MConvection heater  1 AZ
1- 5 RMOTDA211WRE0 MTurntable motor  1 AQ
1- 6 RMOTDA214WRE0 MStirrer motor   1 AQ
1- 7 RTHM-B044MRE0...

13
R-1870
R-1871
REF. NO.PART NO.§ DESCRIPTIONQTYCODE
D1-4 VHD11ES1///-1 JDiode (11ES1) 4 AB
D20-32 VHD1SS270A/-1 JDiode (1SS270A) 13 AA
D65 VHD1SS270A/-1 JDiode (1SS270A) 1 AA
D70-76 VHD1SS270A/-1 JDiode (1SS270A) 7 AA
IC1 RH-IZA719DRE0 J LSI 1 AW
IC2 RH-IZA495DRE0 J IC1AL
Q1 VS2SB1238//-3 JTransistor (2SB1238) 1 AA
Q3 VSKRA101M//-3 JTransistor (KRA101M) 1 AB
Q4 VSDTA123ES/-3 JTransistor (DTA123ES) 1 AA
Q20-26 VSKRA101M//-3 JTransistor (KRA101M) 7 AB
Q27 VSKRC243M//-3 JTransistor (KRC243M) 1 AB
Q28-30...

14
R-1870
R-1871
REF. NO.PART NO.§ DESCRIPTIONQTYCODE
4-14 PHOK-B013MRF0 MLatch hook   1 AG
4-15 FANGTB003MRY0 MUnit mounting plate   1 AV
4-16 PFPF-B002MRE0 MHeat protect L   1 AK
4-17 PPIPFB002MRE0 MColler  1 AD
4-18 PREFHB006MRP0 MHeater cover L   1 AM
4-19 PDUC-B083MRP0 MHood intake duct  L  1 AG
4-20 NFANPB005MRK0 MFan blade   1 AC
4-21 GBDYRB002MRP0 MBack plate   1 AX
4-22 FDUC-B046MRK0 MFan duct   1 AM
4-23 LBSHC0037WRE0 MCord bushing   1 AB
4-24 FDUC-B050MRK0 MExhaust duct   1 AK
4-25...

15
R-1870
R-1871
HOW TO ORDER REPLACEMENT PARTS
To have your order filled promptly and correctly, please furnish the following information.
1. MODEL NUMBER    2. REF. NO.   3. PART NO.  4. DESCRIPTION
Order Parts from the authrized SHARP parts Distributor for your area.
Defective parts required return should be returned as indicated in the Service Policy.
REF. NO.PART NO.§ DESCRIPTIONQTYCODE
6-11 FW-VZB077MRE0 MMain harness   C 1 AH
6-12 TCAUAA041WRR0 MCaution label   1 AA
6-13 TCAUAB005MRR0 MDHHS...

16
R-1870
R-1871
OVEN AND CABINET PARTS
6
45
12
3
6
45
12
3 A
B
C
D
E
F
G
HA
B
C
D
E
F
G
H
4-15
7-11
7-7
7-3
7-20
7-20
7-7
7-17
7-17
7-147-157-21
7-4
7-14
7-12
4-104-9
1-18
4-17
7-23
4-43
4-39
1-21
7-3
7-247-244-36
4-11-17
4-35 4-454-38
7-24
7-7
7-1
2-6
4-23
1-132-5
4-24
4-44
1-61-16
2-9
1-20
2-7
2-3
1-142-4
1-14
4-29
4-316-14  
1-22
4-25
1-11
1-11
4-33
4-424-12
7-25
4-8
4-11
6-127-18
4-13
4-18
4-16
7-6
7-264-12
4-7
1-4
7-22
7-221-12
1-9
1-2
4-4
4-30
4-474-28
4-27
4-46
2-8
1-204-32
7-19
7-12
7-12
1-20...

17
R-1870
R-1871
6
45
12
3
6
45
12
3 A
B
C
D
E
F
G
HA
B
C
D
E
F
G
H
CONTROL PANEL PARTS
MISCELLANEOUS DOOR  PARTS
5-24-34
5-3
5-8
5-5
5-4
5-6
5-1
5-9
5
5-9
5-7
3-23-3
3-4
7-7
3-4
3-1
3-2-2
3-2-33-2-5
3-2-1
3-2-43-2-6
6-6
6-8
6-96-10
6-11
6-1
6-1-1
6-1-2
6-1-36-1-7
6-1-5
6-1-6
6-1-4 

18
R-1870
R-1871
PACKING AND ACCESSORIES
 2-1
4-3
TURNTABLE TRAY 
TOP PAD
BOTTOM PAD
PACKING CASEACCESSORY PACK WRAP COVER
Non-replaceable items
DOOR PROTECTOR
GREASE FILTER (x 2)
INSTALL MATERIAL ASSEMBLY
6-1
6-2
6-3
OPERATION MANUAL WALL TEMPLATE
INSTALLATION INSTRUCTION 6-4
TOP TEMPLATE
6-5
EXHAUST DAMPER
ASSEMBLY 4-1
6-9
6-10
6-7
COOK BOOK