DOWNLOAD Sharp R-86STMA (serv.man11) Service Manual ↓ Size: 266.46 KB | Pages: 7 in PDF or view online for FREE

Model
R-86STMA (serv.man11)
Pages
7
Size
266.46 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Component Replacement And Adjustment Procedure
File
r-86stma-sm11.pdf
Date

Sharp R-86STMA (serv.man11) Service Manual ▷ View online

R86STMA
11 – 3
• Make sure that the fan blade rotates smoothly after
installation.
• Make sure that the axis of the shaft is not slanted.
3. Insert the tabs of the capacitor holder to the fan duct.
4. Install the fan duct to the oven cavity back plate with the one (1)
screw.
5. Install the capacitor holder to the oven cavity back plate with the
one (1) screw.
6. Reinstall the chassis support to the oven cavity with the one (1)
screw.
7. Refit the one(1) screw to secure the chassis support to the magne-
tron.
8. Install the noise filter to the fan duct and the chassis support with
the one (1) screw.
9. Reconnect the wire leads to the fan motor.
[7] TURNTABLE MOTOR REPLACEMENT
1. REMOVAL
1. Disconnect the oven from the power supply. 
2. Remove the turntable from the oven cavity.
3. Turn the oven over.
4. Cut the four (4) bridges holding the turntable motor cover to the
base plate with cutting pliers as shown in Figure C-1(a).
CAUTION: DO NOT DROP THE TURNTABLE MOTOR COVER INTO
THE OVEN AFTER CUTTING THE BRIDGES. BECAUSE
IT WILL DAMAGE THE WIRE LEADS OF THE MOTOR
AND IT IS DIFFICULT TO REMOVE IT OUT OF THE
OVEN.
5. Remove the turntable motor cover from the base plate.
6. Disconnect the wire leads from the turntable motor.
7. Remove the one (1) screw holding the turntable motor to the turnta-
ble motor angle.
8. Bend the turntable motor retaining tab back to release the motor.
9. Remove the turntable motor from the turntable motor angle. Now,
the turntable motor is free.
2. REINSTALLATION
1. Remove the any sharp edges on the turntable motor cover and the
base plate with the cutting pliers.
2. Reinstall turntable motor by locating shaft onto turntable motor
shaft to the turntable motor angle with the one (1) screw.
3. Bend the turntable motor retaining tab forward to secure the motor.
4. Reconnect the wire leads to the turntable motor.
5. Insert the two (2) tabs of the turntable motor cover into the slits of
the base plate as shown in Figure C-1(b).
6. Reinstall the turntable motor cover to the base plate with the screw
(XHTS740P08RV0) as shown in Figure C-1(b).
[8] CONVECTION FAN MOTOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the two (2) screws holding the back plate to oven cavity.
3. Disconnect the wire leads from the convection motor.
4. Remove the two (2) screws holding the rear heat cover to the oven
cavity from out-side.
5. Remove the four (4) screws holding the convection fan duct to the
oven cavity.
6. Now, the convection fan duct assembly is free.
7. Remove the one (1) nut holding the convection fan, washers, pipe
and the cooling fan to the convection motor shaft.
8. Remove the three (3) screws holding the rear heat cover to the
convection fan duct.
9. Remove the two (2) screws holding the convection motor to the
rear heat cover.
Gap
Rotor
Bracket
Stator
Groove joint pliers
Coil
Shaft
Axis
Stator
Rotor
These are the positions
that should be pinched
with pliers.
Shaft
Table
Center of
bracket
Rear View
Side View
Screw; -
XHTS740P08RV0
Turntable motor cover
Base plate
Tabs
Slits
Cutting pliers
Bridges
Bridges
Turntable motor -
cover
Figure C-1(a) Turntable Motor Cover Replacement
Figure C-1(b) Turntable Motor Cover Reinstallation
R86STMA
11 – 4
10.Remove the pipe, washers and the cooling fan from the convection
motor shaft.
11.Remove the ring on the convection motor shaft.
12.Now, the convection motor is free.
[9] POSITIVE LOCK CONNECTOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Push the lever of positive lock
 connector.
3. Pull down on the positive lock
 connector.
CAUTION: WHEN CONNECTING THE POSITIVE LOCK
 CONNEC-
TORS TO THE TERMINALS, CONNECT THE POSITIVE
LOCK
 SO THAT THE LEVER FACES YOU.
Figure C-1. Positive lock
 connector
[10] OVEN LAMP REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the wire leads as Positive lock
 connector removal above.
3. Lift up the oven lamp from its retaining clips.
4. Now, the oven lamp is free.
[11] POWER SUPPLY CORD REPLACEMENT
1. REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the green/yellow wire to the cav-
ity back plate.
3. Disconnect the leads of the power supply cord from the noise filter,
referring to the Figure C-4(a).
4. Release the power supply cord from the rear cabinet.
5. Now, the power supply cord is free.
Figure C-4 (a) Power Supply Cord Replacement
2. REINSTALLATION
1. Insert the moulding cord stopper of power supply cord into the
square hole of the cavity back plate, referring to the Figure C-4(b).
2. Install the earth wire lead of power supply cord to the oven cavity
with one (1) screw and tight the screw.
3. Connect the brown and blue wire leads of power supply cord to the
noise filter correctly, referring to the Pictorial Diagram.
Figure C-4(b). Power Supply Cord Replacement
[12] TOP HEATING ELEMENTS REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the two (2) screws holding the back plate to oven cavity.
3. Disconnect the wire leads from the convection motor.
4. Remove the two (2) grill heater angles from the oven cavity.
5. Remove the top heating element from the top of the oven cavity.
6. Now, the top heating element is free.
Terminal
Push
Pull down
1
2
Lever
Positive lock¨
connector
Figure C-1. Positive lock, connector
Lock
Socket
Bulb
Oven lamp
Power supply cord
Green/ Yellow-
wire
Brown wire
Oven cavity back plate
Blue wire
Noise filter
Screw
L
TP
F 8 A
TL
RED
20
A
WHT
N
POWER
SUPPLY CORD
MOULDING
CORD STOPPER
OVEN CAVITY
BACK PLATE
SQUARE HOLE
R86STMA
11 – 5
[13] BOTTOM HEATING ELEMENTS REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the turntable motor cover from the base plate, referring to
“TURNTABLE MOTOR REPLACEMENT”.
3. Disconnect the wire leads from the bottom heating element.
4. Remove the two (2) nuts holding the heater cover and heater pack-
ing to the bottom heater.
5. Remove the heater cover and the heater packing from the bottom
heating element.
6. Remove the two(2) nuts holding the bottom heating element to the
oven cavity.
7. Remove the bottom heating element from the oven cavity.
[14] CONTROL PANEL ASSEMBLY REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads and the connectors from the control unit.
3. Remove the one (1) screw holding the control panel assembly to
the oven cavity front plate.
4. Lift up the control panel assembly and pull it forward.
Now the control panel assembly is free.
[15] GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT
1. REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the control panel assembly, referring to chapter of CON-
TROL PANEL ASSEMBLY REMOVAL.
3. Disconnect the ribbon cable of the membrane switch from the con-
nector (CN-G) on the control unit.
4. Tear away the graphic sheet from the control panel frame.
5. Tear away the membrane switch from the control panel frame.
2. REINSTALL
1. Remove remaining adhesive on the control panel frame surfaces
with a soft cloth soaked in alcohol.
2. Tear the backing paper from the new membrane switch.
3. Insert the ribbon cable of the membrane switch into the slit of the
control panel frame.
4. Adjust the upper edge and right edge of the membrane switch to
the small depression on the surface of the control panel frame. 
5. Attach the membrane switch to the control panel frame by rubbing
with a soft cloth not to scratch.
6. Tear the backing paper from the new graphic sheet.
7. Adjust the upper edge and right edge of the graphic sheet to the
large depression on the surface of the control panel frame. 
8. Attach the graphic sheet to the control panel frame by rubbing with
a soft cloth not to scratch.
9. Connect the ribbon cable of the membrane switch to the connector
(CN-G) on the control unit.
 Figure C-5. Graphic Sheet and Membrane Switch Replacement
[16] MONITORED LATCH SWITCH, MONITOR SWITCH AND STOP SWITCH REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the control panel assembly referring to “CONTROL
PANEL ASSEMBLY REMOVAL”.
3. Remove the open lever from the oven cavity front plate by remov-
ing the control panel assembly.
4. Disconnect the leads from all switches.
5. Remove the two (2) screws holding the latch hook to the oven cav-
ity.
6. Remove the latch hook.
7. Remove the switch(es) from the latch hook by pushing the retaining
tab backwards slightly and turning the switch(es) on the post.
8. Now the switch(es) is free
Figure C-5. Switches
Small depression
Control panel frame
Slit
Membrane switch
Ribbon cable
Large
depression
Graphic sheet
MONITOR SWITCH
STOP SWITCH
MONITORED
LATCH SWITCH
TAB
TAB
Post
Post
Post
TAB
R86STMA
11 – 6
[17] MONITORED LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH ADJUSTMENT
1. Adjustment
If the monitored latch switch, stop switch and monitor switch do not
operate properly due to a mis-adjustment, the following adjustment
should be made.
1. CARRY OUT 3D CHECKS.
2. Loosen the two (2) screws holding the latch hook to the oven cavity
front flange.
3. 3. With the door closed, adjust the latch hook by moving it back and
forward or up and down. In and out play of the door allowed by the
latch hook should be less than 0.5mm. The horizontal position of
the latch hook should be placed where the monitor switch has acti-
vated with the door closed. The vertical position of the latch hook
should be placed where the monitored latch switch and stop switch
have activated with the door closed.
4. Secure the screws with washers firmly.
5. Make sure of the all switches operation. If the latch head has not
pushed the plungers of the monitor switch with door closed, adjust
the latch hook position. At that time, the latch head should have
pushed the plungers of the monitored latch switch and stop switch.
If the latch head has not pushed the plungers of the monitored latch
switch and stop switch with door closed, loose two (2) screws hold-
ing latch hook to oven cavity front flange and adjust the latch hook
position.
2. After adjustment, make sure of following.
1. In and out play of door remains less than 0.5mm when latched
position. First check the latch hook position, pushing and pulling
upper portion of the door toward the oven face. Then check the
lower latch hook position, pushing and pulling lower portion of the
door toward the oven face. Both results (play of the door) should be
less than 0.5mm.
2. The stop switch interrupts the circuit before the door can be
opened.
3. When the door is opened, the contacts (COM-NC) of the monitor
switch and monitored latch switch close. And the contacts (COM-
NO) of their switches open. 
4. When the door is closed the contacts (COM-NC) of the monitor
switch and monitored latch switch open. And the contacts (COM-
NO) of their switches close.
5. Reinstall outer case and check for microwave leakage around the
door with an approved microwave survey meter. (Refer to Micro-
wave Measurement Procedure.)
Figure C-6 Latch Switches Adjustment
[18] DOOR REPLACEMENT
1. REMOVAL
DOOR FRAME ASSEMBLY
1. Disconnect the oven from the power supply.
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the gap
between the choke cover and door frame as shown in Figure C-7 to
free engaging parts.
4. Release choke cover from door panel.
5. Now choke cover is free.
NOTE: When carrying out any repair to the door, do not bend or warp
the slit choke (tabs on the door panel assembly) to prevent
microwave leakage.
Figure C-7. Door Disassembly
6. Lift the door upwards.
7. Now, door frame assembly is free from oven cavity.
DOOR PANEL
8. Remove the six (6) screws holding the door panel to the door
frame.
9. Now, door panel is free.
LATCH HEAD AND SPRING
10.Slide latch head upward and remove it from door frame with releas-
ing latch spring from door frame and latch head.
11.Now, latch head and latch spring are free.
FRONT DOOR GLASS
12.Remove the two (2) door glass stopper from the door frame.
13.Remove the front door glass from the door frame by sliding right-
wards.
14.Now, the front door glass is free.
2. REINSTALLATION
1. Insert the front door glass to the door frame.
2. Fit the two (2) door glass stopper to the door frame to hold the front
door glass.
3. Reinstall the latch spring to the latch head. Re-install the latch
spring to the door frame. Re-install latch head to door frame.
4. Reinstall door panel to door frame.
5. Hold the door panel to the door frame with six (6) screws.
6. Located door panel hinge pins into cavity hinge location hole.
7. Reinstall choke cover to door panel by clipping into position.
LATCH
HEADS
LATCH HOOK
DOOR OPEN BUTTON
OPEN LEVER
DOOR
MONITOR SWITCH
MONITORED LATCH
SWITCH
STOP SWITCH
Choke Cover
Putty Knife
Door Frame
Page of 7
Display

Sharp R-86STMA (serv.man11) Service Manual ▷ Download

  • DOWNLOAD Sharp R-86STMA (serv.man11) Service Manual ↓ Size: 266.46 KB | Pages: 7 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp R-86STMA (serv.man11) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp R-86STMA (serv.man11) Microwave Oven. Information contained in Sharp R-86STMA (serv.man11) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.