Sharp R9h56 Service Manual

R-9H56
29
 TURNTABLE MOTOR AND/OR COUPLING REMOVAL
1. Disconnect the oven from power supply.
2.
Remove one (1) screw holding the turntable motor cover
to the base cabinet and take off the turntable motor cover.
3. Disconnect wire lead from the turntable motor.4. Remove the two (2) screws holding the turntable motor
to the mounting plate of the oven cavity bottom.
5. Pull the turntable coupling out of the oven cavity.
6. Turntable coupling and motor will be free.
CONVECTION MOTOR REMOVAL
1. CARRY OUT 3D...

R-9H56
30
CAUTION:
* Do not hit the fan blade strongly when installed
because the bracket may be transformed.
* Make sure that the fan blade rotates smooth after
installed.
* Make sure that the axis of the shaft is not slanted.
3. Install the fan duct to the air guide.
4. Install the chassis support to the oven cavity with three
(3) screws.
Shaft
TableCenter of
bracket
5. Connect the wire leads to the fan motor and the thermal
cut-out, referring to the pictorial diagram.
Refer to chapter ÒTest...

R-9H56
31
DOOR DISASSEMBLY
Remove door assembly, refer to ÒDoor ReplacementÓ.
Replacement of door components are as follows:
1. Place door assembly on a soft cloth with latches facing
up.
Note: As the engaging part of choke cover and door panel
are provided at several places, do not force any
particular part.
2. Insert an putty knife (thickness of about 0.5mm) into the
gap between the choke cover and corner portion of door
panel as shown figure C-2 to free engaging parts.
3. Lift up choke cover.
4. Now...

R-9H56
32
MICROWAVE MEASUREMENT
After adjustment of door latch switches, monitor switch
and door are completed individually or collectively, the
following leakage test must be performed with a survey
instrument and it must be confirmed that the result meets
the requirements of the performance standard for micro-
wave oven.
REQUIREMENT
The safety switch must prevent microwave radiation emis-
sion in excess of 5mW/cm2 at any point 5cm or more from
external surface of the oven.
PREPARATION FOR TESTING:...

R-9H56
33
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. CLOCK APPERARS ON DISPLAY
Figure O-1. Oven Schematic-OFF Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3.VARIABLE COOKING CONTROL ÒHIGHÓ
4. START PAD TOUCHED.SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. ÒSENSOR COOKÓ PAD TOUCHED
3.  START PAD TOUCHED.
Figure O-2. Oven Schematic-High or Easy Defrost or Reheat Sensor Cooking Condition
CONTROL
UNIT
TEMP.
FUSE
150˚C
THERMAL
CUT-OUT
150˚C...

R-9H56
34
Figure O-4. Oven Schematic-Automatic Mix Cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. CONVECTION PAD TOUCHED.
3.DESIRED TEMO. PAD TOUCHED.
4. START PAD TOUCHED.
Figure O-3. Oven Schematic-Convection Cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. MIX COOKING PAD TOUCHED.
3.DESIRED TEMP. PAD TOUCHED.
4. START PAD TOUCHED.
NOTE:   indicates components with potential above 250V.
CONTROL
UNIT
TEMP.
FUSE
150˚C
THERMAL
CUT-OUT
150˚C (OVEN)FUSE...

R-9H56
35
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
HV. RECTIFIER
O 
R
G
BLK
ASYMMETRIC 
RECTIFIER
MAGNETRON
RED
REDHV. WIRE A
RED
G
R
Y
HIGH VOLTAGE COMPONENTS
POWER
SUPPLY 
COED NOTE: ORANGE WIRE (LIVE) MUST BE
         CONNECTED TO THE CABINET
      SIDE TERMINAL OF  POWER
     TRANSFORMER
TURNTABLE 
MOTOR
GRY
BRNWHT
YLW
YLWDAMPER 
MOTOR DAMPER 
SWITCHFAN 
MOTOR
OVEN
THERMAL
CUT-OUT
150˚C
ORGOVEN 
LAMP
STOP SWITCH
I
C
1
RED 6
5
41 23PNK
PNK...

R-9H56
36
6
45
12
3
6
45
12
3 A
B
C
D
E
F
G
HA
B
C
D
E
F
G
H
AC240V
     50Hz
A-9
A-7COM
N.O.A-5
A-3
A-1
IF NOT SPECIFIED. 0.01µ/16V COMN.O. COM
OVEN LAMP
 
TURNTABLE
MOTOR
 
COM.
POWER
TRANSFORMER
HEATING
ELEMENT
FAN
MOTOR
CONVECTION
MOTOR
DAMPER
MOTOR
F-1 F-2 F-3 E-3 E-4 E-5 E-6 E-1 E-2
VRS1a
b
cd
(J1)
S2T1
P
S117
8
5
4
3
11ES1 x 4 
D1
D2
D3D4
RY1
C1 0.1µ/50VC21
0.01µ/50V
C2 1000µ/35V+
-D7
R2 330 1/2W Q1 2SB793
R1 470
1/2WZD1
HZ16-1
D81
Q81
DTD143EA+-
R80 470
C82
4.7µ/35V
Q80
DTA114YS+-
+
-
C3...

R-9H56
37
6
45
12
3
6
45
12
3 A
B
C
D
E
F
G
HA
B
C
D
E
F
G
H
DIP
, 
32 1
R11
(CN-D)
R103
R102
R101
R100C10033 40 
R91 R92  R93
D91
D92
D93
D94 
R94
D95 
R95
D97      R96 D96     
R97
D98    
R98
45 
50 55  
C6
 
32254
101
5
R113
R112
R111   
13
CF 1  (R45)
 R5
  (C45)
 
C7
 C20      
IC-1       4        ZD3 
 ZD4 
 E
1
C5 +
-
R20
2
3
+-
(C46)
(C47 )
(IC-3) 
201
8 5
Q40
(R47)
(R48)
(R46)
CN-G R51(J6) (J4)  (J2) 
(J7)
(J5)
(J3)
7
IC-2
C4
15
CN-F
8
9
10
11
14
6
R60 R61
R71(J9)
EB
E
R49
R40
12 B...

R-9H56
38
PARTS LIST
Note: The parts marked D may cause undue microwave exposure.
The parts marked * are used in voltage more than 250V.
REF. NO. PART NO. DESCRIPTION QTY CODE
*
*
*
* D
D
D
ELECTRICAL PARTS
1- 1 FH-DZA058WRK0 High voltage rectifier assembly 1 AL
1- 2 FH-HZA041WRE0 Thermistor assembly 1 AN
1- 3 QACCAA040WRE0 Power supply cord 1 AV
1- 4 QFS-CA010WRE0 Fuse (M8A) 1 AE
1- 5 QFS-TA013WRE0 Temperature fuse 150ûC 1 AG
1- 6 QFSHDA002WRE0 Fuse holder 1 AE
1- 7 QSOCLA011WRE0 Oven lamp socket 1 AH...