SHARP R-350A Service Manual
COOK KG DEF HELP
INTERACTIVE
DISPLAY
1 .
BEVERAGE
2 .
PIE/PIZZA
3 .
PORRIDGE
4 .
CASSEROLES
1 .
STEAK/CHOPS
2 .
ROAST MEAT
3 .
POULTRY
4 .
CHICKEN PIECES
MEAT
VEGETABLES
12345
6789O
POWER LEVELS
CLOCK
STOP/CLEAR
INSTANT COOK/START
SER VICE MANU AL
MICROWAVE OVEN
HELP
REHEAT
DEFROST
SLOW COOK
TIMER
MODEL R-350A
R-350A
S8725R350APHR
In interests of user-safety the oven should be restored to its
original condition and only parts identical to those specified
should be used.
This is supplemental Service Manual for Model R-350A. This model is quite similar to Base Model R-340A. Use
this supplemental manual together with the Base Model Service Manual (Refer No. is S7717R340APHR) for
complete operation, service information, etc..
TABLE OF CONTENTS
Page
SERVICING ................................................................................................................. INSIDE FRONT COVER
CAUTION, MICROWAVE RADIATION ............................................................................................................ 1
WARNING..........................................................................................................................................................1
PRODUCT SPECIFICATIONS......................................................................................................................... 2
GENERAL INFORMATION ............................................................................................................................... 2
APPEARANCE VIEW....................................................................................................................................... 3
OPERATION SEQUENCE ............................................................................................................................... 3
TEST PROCEDURE ........................................................................................................................................ 4
TOUCH CONTROL PANEL .............................................................................................................................. 4
MICROWAVE MEASUREMENT ...................................................................................................................... 7
WIRING DIAGRAM .......................................................................................................................................... 8
CPU UNIT CIRCUIT.......................................................................................................................................... 9
PARTS LIST.................................................................................................................................................... 10
SHARP CORPORATION
R-350A
SERVICING
WARNING TO SERVICE PERSONNEL
Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts
of the high voltage circuit will result in electrocution. High voltage capacitor, Power transformer, Magnetron, High
voltage rectifier assembly, High voltage harness.
REMEMBER TO CHECK 3D
1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge high voltage capacitor.
WARNING: AGAINST THE CHARGE OF THE
HIGH-VOLTAGE CAPACITOR
The high-voltage capacitor remains charged about
60 seconds after the oven has been switched off.
Wait for 60 seconds and then short-circuit the
connection of the high-voltage capacitor (that is, of
the connecting lead of the high-voltage rectifier)
against the chassis with the use of an insulated
screwdriver.
Sharp recommend that wherever possible fault-finding
is carried out with the supply disconnected. It may in,
some cases, be necessary to connect the supply after
the outer case has been removed, in this event carry
out 3D checks and then disconnect the leads to the
primary of the power transformer. Ensure that these
leads remain isolated from other components and the
oven chassis. (Use insulation tape if necessary.) When
the testing is completed carry out 3D checks and
reconnect the leads to the primary of the power transformer.
REMEMBER TO CHECK 4R
1) Reconnect all leads removed from components
during testing.
2) Replace the outer case (cabinet).
3) Reconnect the supply.
4) Run the oven. Check all functions.
Microwave ovens should not be run empty. To test for
the presence of microwave energy within a cavity,
place a cup of cold water on the oven turntable, close
the door and set the microwave timer for two (2)
minutes. Set the power level to HIGH and push the
START button. When the two minutes has elapsed
(timer at zero) carefully check that the water is now hot.
If the water remains cold carry out 3D checks and reexamine the connections to the component being
tested.
When all service work is completed and the oven is fully assembled, the microwave power output should be
checked and microwave leakage test should be carried out.
SERVICE MANU AL
MICROWAVE OVEN
R-350A
PRODUCT SPECIFICATIONS
R-350A
GENERAL IMPORTANT INFORMATION
This Manual has been prepared to provide Sharp Corp. Service
engineers with Operation and Service Information.
It is recommended that service engineers carefully study the
entire text of this manual, so they will be qualified to render
satisfactory customer service.
CAUTION
MICROWAVE RADIATION
DO NOT BECOME EXPOSED TO RADIATION FROM
THE MICROWAVE GENERATOR OR OTHER PARTS
CONDUCTING MICROWAVE ENERGY.
Service engineers should not be exposed to the microwave
energy which may radiate from the magnetron or other
microwave generating devices if it is improperly used or
connected. All input and output microwave connections,
waveguides, flanges and gaskets must be secured. Never
operate the device without a microwave energy absorbing
load attached. Never look into an open waveguide or
antenna while the device is energized.
APPEARANCE VIEW
OPERATING SEQUENCE
TEST PROCEDURE
TOUCH CONTROL PANEL
ASSEMBLY
MICROWAVE MEASUREMENT
WIRING DIAGRAM
WARNING
Never operate the oven until the following points are ensured.
(A) The door is tightly closed.
(B) The door brackets and hinges are not defective.
(C) The door packing is not damaged.
(D) The door is not deformed or warped.
(E) There is not any other visible damage with the oven.
Servicing and repair work must be carried out only by trained
service engineers.
All the parts marked "*" on parts list are used at voltages more
than 250V.
Removal of the outer wrap gives access to potentials above
250V.
All the parts marked "∆" on parts list may cause undue microwave exposure, by themselves, or when they are damaged,
loosened or removed.
SHARP CORPORATION
PARTS LIST
OSAKA, JAPAN
1
R-350A
PRODUCT SPECIFICATIONS
ITEM DESCRIPTION
Power Requirements 220 Volts
50 Hertz
Single phase, 3 wire earthed
Power Consumption 1.5kW
Power Output 1000 watts nominal of RF microwave energy (IEC 705)
Operating fequency 2450 MHz
Case Dimensions Width 520 mm
Height 302 mm including foot
Depth 403 mm
Cooking Cavity Dimensions Width 348 mm
Height 212 mm
Depth 379 mm
Turntable diameter 335mm
Control Complement Touch Control System
Clock ( 1:00 - 12:59)
Timer (0 - 99 minutes 99 seconds)
Microwave Power for Variable Cooking
Repetition Rate;
HIGH............................................... Full power throughout the cooking time
MEDIUM HIGH .................................................. approx. 70% of Full Power
MEDIUM .............................................................approx. 50% of Full Power
MEDIUM LOW .................................................... approx. 30% of Full Power
LOW ................................................................... approx. 10% of Full Power
HELP pad
REHEAT pad
DEFROST pad
SLOW COOK pad
INFORMATION COOK pads
MORE / LESS pads
NUMBER pads
POWER LEVEL pad
CLOCK pad
TIMER pad
STOP/CLEAR pad
INSTANT COOK/START pad
Set Weight Approx. 17 kg
GENERAL INFORMATION
WARNING
THIS APPLIANCE MUST BE EARTHED
IMPOTANT
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
2
APPEARANCE VIEW
TOUCH CONTROL PANEL
R-350A
INFORMATION COOK PADS
Press to select information Cook mode.
NUMBER PADS
Press to enter cooking times, clock
time or weight or quantity of food.
POWER LEVEL PAD
Press to select microwave power
setting. If not pressed, HIGH is automatically selected.
STOP/CLEAR PAD
Press to clear during programming.
Press once to stop operation of oven
during cooking; press twice to cancel cooking programme.
COOK KG DEF HELP
INTERACTIVE
DISPLAY
1 .
BEVERAGE
2 .
PIE/PIZZA
3 .
4 .
1 .
2 .
3 .
4 .
PORRIDGE
CASSEROLES
STEAK/CHOPS
ROAST MEAT
POULTRY
CHICKEN PIECES
MEAT
VEGETABLES
HELP
REHEAT
DEFROST
SLOW COOK
12345
6789O
POWER LEVEL
STOP/CLEAR
CLOCK
INSTANT COOK/START
TIMER
Indicator
HELP PAD
Press to select information guide
on/off, child lock, demonstration
or language modes.
Press to get cooking information.
SLOW COOK PAD
Press to cook slowly and for a
longer time.
MORE ( ), LESS ( ) PADS
Press to increase/decrease the
time in one minute increments
during cooking or to alter the doneness for the Information Cook
mode.
CLOCK PAD
Press to set Clock.
TIMER PAD
Press to set timer.
I
NSTANT COOK/START PAD
Press once to cook for 1 minute
at HIGH or increase by 1 minute
multiples each time this pad is
pressed during cooking.
Press to start oven after setting
programmes.
OPERATION SEQUENCE
OFF CONDITION
Closing the door activates all door interlock switches (1st. latch switch and 2nd. interlock relay control switch).
IMPORTANT
When the oven door is closed, the monitor switch contacts (COM-NC) must be open.
When the microwave oven is plugged in a wall outlet, rated voltage is supplied to the control unit.
Figure O-1 on page 13
1. The display will show , , and .
2. To set any programmes or set the clock, you must first touch the STOP/CLEAR pad.
3. " : " appears in the display.
NOTE: When the oven door is opened, the oven lamp comes on at this time.
3
R-350A
TEST PROCEDURES
PROCEDURE
LETTER
M KEY UNIT TEST
If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon cable
is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the
contacts are closed when the door is closed and open when the door is open.
If the door sensing switch (stop switch) is good, disconnect the flat ribbon cable that connects the key
unit to the control unit and make sure the door sensing switch is closed (either close the door or short
the door sensing switch connector). Use the key unit matrix indicated on the control panel schematic
and place a jumper wire between the pins that correspond to the STOP/CLEAR pad making
momentary contact. If the control unit responds by clearing with a beep the key unit is faulty and must
be replaced. If the control unit does not respond, it is faulty and must be replaced.
If a specific pad does not respond, the above method may be used (after clearing the control unit) to
determine if the control unit or key pad is at fault.
CARRY OUT 3D CHECKS.
G 9
G10
G11
G12
COMPONENT TEST
G 8 G 7 G 6 G 5 G 4 G 3 G 2 G 1
5
TIMER
INSTANT
COOK
START
4
90
SLOW
COOK
CLOCK
3
78
VEGETABLES
12
6
REHEAT
DEFROST
HELP
POWER
LEVEL
STOP
CLEAR
MEAT
DESCRIPTION OF LSI
LSI(IZA814DR):
The I/O signal of the LSI(IZA814DR) is detailed in the following table.
Pin No. Signal I/O Description
1-2 VL2-VL1 IN Power source voltage input terminal.
Standard voltage for LCD.
3-6 AN7-AN4 IN Terminal to change cooking input according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the
Model in operation is applied to set up its cooking constant.
7 AN3 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G1 line keys on key matrix is touched.
8 AN2 IN To input signal which communicates the door open/close information to LSI.
Door closed "H" level signal (0V). Door opened "L" level signal (-5V)
9-10 P61-P60 OUT Terminal not used.
11 P57 OUT Terminal not used.
12 P56 OUT Oven lamp, fan motor and turntable motor driving signal.
To turn on and off shut off relay (RY1). The
square waveform voltage is delivered to
the RY1 driving circuit and RY2 control
circuit.
20.0 msec.
During cooking
H : GND
L : -5V
13 P55 OUT Terminal not used.
4
Pin No. Signal I/O Description
P-HI
H : GND
L : -5V
H : GND
L : -5V
P-70
ON
ON
OFF
OFF OFF
24 sec.
8 sec.
14 P54 OUT Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
0.12 sec.
A
2.4 sec.
B
15 P53 OUT Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay
(RY2). The signals holds "L" level
during microwave cooking and "H"
level while not cooking. In other cooking modes (variable cooking) the signal turns to "H" level and "L" level in
repetition according to the power level.
(ON and OFF times for other power level.)
16-18 P52-P50 OUT Terminal not used.
19 P47 IN Signal coming from touch key.
When either G12 line on key matrix is touched, a corresponding signal out of AN3
and P20 - P26 will be input into P47. When no key is touched, the signal is held at
"H" level.
20 P46 IN Signal similar to P47.
When either G11 line on key matrix is touched, a corresponding signal will be input
into P46.
21 P45 IN Signal similar to P47.
When either G10 line on key matrix is touched, a corresponding signal will be input
into P45.
22 P44 IN Signal similar to P47.
When either G9 line on key matrix is touched, a corresponding signal will be input
into P44.
23 P43 OUT Terminal not used.
24 INT0 IN Signal synchronized with commercial power source frequency.
This is the basic timing for time processing
of LSI.
20.0 msec.
R-350A
H : GND
L : -5V
H : GND
L : -5V
H : GND
L : -5V
25 P41 OUT Terminal not used.
26 P40 IN Connected to VC.
27 RESET IN Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied. Temporarily
set to "L" level the moment power is applied, at this time the LSI is reset. Thereafter
set at "H" level.
28-29 P71-P70 OUT Terminal not used.
30 XIN OUT Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit
with respect to XIN terminal.
31 XOUT OUT Internal clock oscillation frequency control output.
Output to control oscillation input of XOUT.
32 VSS IN Power source voltage: -5.0V.
VC voltage of power source circuit input.
33 P27 OUT Terminal not used.
34 P26 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G8 line keys on key matrix is touched.
35 P25 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G7 line keys on key matrix is touched.
5
R-350A
Pin No. Signal I/O Description
36 P24 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G6 line keys on key matrix is touched.
37 P23 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G5 line keys on key matrix is touched.
38 P22 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G4 line keys on key matrix is touched.
39 P21 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G3 line keys on key matrix is touched.
40 P20 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P44 - P47 terminal
while one of G2 line keys on key matrix is touched.
41-44 P17-P14 OUT Terminal not used.
45-47 P13-P11 OUT Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.) LCD (Pin No.) LSI signal (Pin No.) LCD (Pin No.)
P13 (45)......................... S16 (25) SEG 13 (59) ....................S20 (12)
P12 (46)......................... S15 (24) SEG 11 (61) ....................S21 (11)
P11 (47)......................... S14 (23) SEG 10 (62) ....................S22 (10)
SEG 24 (48)................... S13 (22) SEG 9 (63).......................S23 ( 9)
SEG 23 (49)................... S12 (21) SEG 8 (64).......................S24 ( 8)
SEG 22 (50)................... S11 (20) SEG 7 (65).......................S25 ( 7)
SEG 21 (51)................... S10 (19) SEG 6 (66).......................S26 ( 6)
SEG 19 (53)..................... S9 (18) SEG 5 (67)........................S 4 ( 5)
SEG 18 (54)..................... S8 (17) SEG 3 (69)........................S 3 ( 4)
SEG 17 (55)..................... S7 (16) SEG 2 (70)........................S 2 ( 3)
SEG 16 (56)..................... S6 (15) SEG 1 (71)........................S 1 ( 2)
SEG 15 (57)..................... S5 (14) SEG 0 (72)........................S 0 ( 1)
SEG 14 (58)................... S19 (13)
48-51 SEG24-SEG21 OUT Segment data signal.
Signal similar to P13.
52 SEG20 OUT Terminal not used.
53-59 SEG19-SEG13 OUT Segment data signal.
Signal similar to P13.
60 SEG12 OUT Terminal not used.
61-67 SEG11-SEG5 OUT Segment data signal.
Signal similar to P13.
68 SEG4 OUT Terminal not used.
69-72 SEG3-SEG0 OUT Segment data signal.
Signal similar to P13.
73/74 VCC/VREF IN Connected to GND.
75 AVSS IN Connected to VC.
76 COM3 OUT Common data signal: COM3.
Connected to LCD signal C3 (Pin No. 29)
77 COM2 OUT Common data signal: COM2.
Connected to LCD signal C2 (Pin No. 28)
78 COM1 OUT Common data signal: COM1.
Connected to LCD signal C1 (Pin No. 27)
79 COM0 OUT Common data signal: COM0.
Connected to LCD signal C0 (Pin No. 26)
80 VL3 IN Power source voltage input terminal.
Standard voltage for LCD.
6
MICROWAVE MEASUREMENT
R-350A
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 microwave oven.
REQUIREMENT
The safety switch must prevent microwave radiation emission in excess of 5mW/cm2 at any point 5cm or more from
external surface of the oven.
PREPARATION FOR TESTING:
Before beginning the actual test for leakage, proceed as
follows;
1. Make sure that the test instrument is operating normally
as specified in its instruction booklet.
Important:
Survey instruments that comply with the requirement
for instrumentations as prescribed by the performance
standard for microwave ovens must be used for testing.
Recommended instruments are:
NARDA 8100
NARDA 8200
HOLADAY HI 1500
SIMPSON 380M
2. Place the oven tray into the oven cavity.
3. Place the load of 275 ± 15ml of water initially at 20
± 5˚C in the centre of the oven tray. The water
container should be a low form of 600 ml beaker with
inside diameter of approx. 8.5cm and made of an
electrically non-conductive material such as glass
or plastic.
The placing of this standard load in the oven is important
not only to protect the oven, but also to insure that any
leakage is measured accurately.
4. Close the door and turn the oven ON with the timer set
for several minutes. If the water begins to boil before
the survey is completed, replace it with 275ml of cool
water.
5. Move the probe slowly (not faster that 2.5cm/sec.)
along the gap.
6. The microwave radiation emission should be measured
at any point of 5cm or more from the external surface
of the oven.
mW cm
mW cm
SHARP
2
2
Microwave leakage measurement at 5 cm distance
7
R-350A
SCHEMATIC
NOTE: CONDITION OF OVEN
1.DOOR CLOSED
2.CLOCK APPEARS ON DISPLAY
NOISE FILTER
L
FUSE
EARTH
M10A
0.068µ/AC250V
LINE CROSS CAPACITOR
N
BRN
220V 50Hz
G-Y
BLU
NOTE: " " indicates components with potentials above 250V.
THERMAL CUT-OUT
125˚C (OVEN)
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
NOISE SUPPRESSION COIL
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
THERMAL CUT-OUT
95˚C (MG)
COM.
A3
2ND
INTERLOCK
RELAY
B1
2ND INTERLOCK
RELAY CONTROL
SWITCH
1ST. LATCH
SWITCH
N.O.
RY-2
CONTROL
UNIT
B2
A1
RY-1
OL
OVEN LAMP
FM
FAN MOTOR
TTM
MONITOR
RESISTOR
0.8/20W
MONITOR SWITCH
TURNTABLE MOTOR
POWER TRANSFORMER
H.V. FUSE
0.75 A
CAPACITOR
1.07µ
AC2200V
MAGNETRON
H.V. RECTIFIER
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. START KEY TOUCHED
NOISE FILTER
L
FUSE
BRN
220V 50Hz
G-Y
BLU
EARTH
M10A
0.068µ/AC250V
LINE CROSS CAPACITOR
N
NOISE SUPPRESSION COIL
Figure O-1. Oven Schematic-OFF Condition
THERMAL CUT-OUT
125˚C (OVEN)
2ND
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
LINE BYPASS
CAPACITOR
0.0022µ/AC250V
THERMAL CUT-OUT
95˚C (MG)
COM.
A3
INTERLOCK
RELAY
2ND INTERLOCK
RELAY CONTROL
SWITCH
1ST. LATCH
SWITCH
N.O.
A1
RY-1
RY-2
OL
CONTROL
UNIT
B2
B1
FM
OVEN LAMP
TTM
FAN MOTOR
TURNTABLE MOTOR
MONITOR
RESISTOR
0.8/20W
MONITOR SWITCH
POWER TRANSFORMER
H.V. FUSE
0.75 A
CAPACITOR
1.07µ
AC2200V
MAGNETRON
H.V. RECTIFIER
Figure O-2. Oven Schematic-Cooking Condition
8
R-350A
1
C 3
C 2
HELP
A
B
LIQUID CRYSTAL DISPLAY
COOK SENSOR LBS KG DEF
C
2
29
28
27 C 1
26 C 0
25 S16
24 S15
23 S14
22 S13
21 S12
20 S11
19 S10
18 S 9
17 S 8
16 S 7
15 S 6
14 S 5
13 S19
12 S20
11 S21
10 S22
9 S23
8 S24
7 S25
6 S26
5S 4
4S 3
3S 2
2S 1
1S 0
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
VCC
VREF
AVSS
COM3
COM2
COM1
COM0
SEG8
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
1VL2
3
SEG9
SEG10
SEG1161SEG1260SEG1359SEG1458SEG1557SEG1656SEG1755SEG1854SEG1953SEG2052SEG2151SEG2250SEG2349SEG24
63
62
IZA814DR
M38223M4
2VL1
3AN7
4AN6
5AN5
6AN4
7AN3
8AN2
9P61
10P60
11P57
12P56
13P55
14P54
48
47 P11
15P53
16P52
17P51
18P50
45
R67 15k
HELP
R64 15k
R63 15k
P17
P14
41
42 P16
43 P15
44
45 P13
46 P12
19P47
40
P20
39
P21
38
P22
37
P23
36
P24
35
P25
34
P26
33
P27
VSS
XOUT
XIN
P70
P71
RESET
P40
P41 VL3
R41 680F
R40 1MF
CF1 4.19MHz
/50v
15P
C40
32
31
30
29
28
27
26
25
20P46
21P45
22P44
23P43
24
INT0
R80 4.7k
15P/50v
C41
R62 15k
R61 15k
G 7 G 6 G 5 G 4 G 3 G 2 G 1
R60 15k
G 8
C60 330pF/50v
C61 330pF/50v
C62 330pF/50v
C63 330pF/50v
R72 100k
R73 100k
R74 100k
R75 100k
54321
G 9
LEVEL
POWER
09876
G10
6
STOP
MEAT
CLEAR
REHEATTIMER
DEFROST
VEGETABLES
SLOW
COOK
CLOCK
COOK
INSTANT
G12
G12
G11
START
KEY UNIT
A
B
C
C11 0.1µ/50v
D
(J17)
(J15)
(J13)
(J11)
E
R14
Q10
1k
R10
F
+
G
R13
/50v
0.1µ
C12
4.7k
R11
2SA1037AK
C1 47µ/16v
–
(J16) 4.7k
(J14) 4.7k
(J12) 4.7k
(J10) 4.7k
10k 10k 10k
R12
UDZ4.3B
ZD10
C14
/50v
0.1µ
C13
R15 4.7k
Q11
KRA101S
C30
R30 4.7k
Q40
KRA101S
R31 15k
C20 0.1µ/50v
Q20
KRA101S
Q22
KRA105S
D22
MA152WA
: IF NOT SPECIFIED 1SS355
: IF NOT SPECIFIED 0.01µF / 25v
: IF NOT SPECIFIED 1/10W ± 5%
NOTE
R71 15k
R70 15k
R69 15k
R68 15k
D
E
Figure S-3. CPU Unit Circuit
F
G
C 2
C 1
NC
GND
H
1
C 3
VC
C 4
INT
2
C 5
BUZZER
C 6
RY1
C 7
RY2
3
9
C 8
C 9
DOOR
SWITCH
45
6
H
R-350A
PARTS LIST
Note: The parts marked "∆" may cause undue microwave exposure.
The parts marked "*" are used in voltage more than 250V.
REF. NO. PART NO. DESCRIPTION Q'TY CODE
ELECTRIC PARTS
1- 1 QSW-MA110WRE0
1- 2 QSW-MA111WRE0 Monitor switch 1 AK
1- 3 FPWBFA310WRK0 Noise filter 1 AT
1- 4 RTHM-A078WRE0 Thermal cut-out 125˚C. 1 AL
1- 5 QACC-A067WRE0 Power supply cord 1 AT
1- 6 FH-DZA075WRK0 High voltage rectifier assembly 1 AR
*
1- 7 RC-QZA215WRE0 High voltage capacitor 1 AY
*
1- 7 RC-QZA182WRE0 High voltage capacitor (Interchangeable) 1 AY
*
1- 8 RV-MZA197WRE0 Magnetron 1 BN
∆
*
1- 8 RV-MZA222WRE0 Magnetron (Interchangeable) 1 BN
∆
*
1- 9 RMOTEA340WRE0 Fan motor 1 AX
1-10 QSOCLA022WRE0 Oven lamp socket 1 AG
1-11 RLMPTA069WRE0 Oven lamp 1 AK
1-12 RMOTDA169WRE0 Turntable motor 1 AW
1-13 RTHM-A079WRE0 Thermal cut-out 95 deg. 1 AL
1-14 RTRN-A530WRE0 Power transformer 1 BR
*
1-15 QFS-CQ001YBE0 Fuse M10A 1 AE
1-16 RR-WZA022WRE0 Monitor resistor 0.8Ω 20w 1 AK
1-17 QFS-IA002WRE0 High voltage fuse 0.75 A 1 AQ
1st. latch switch, 2nd. interlock relay control switch
2AK
CABINET PARTS
2- 1 GCABUA608WRP0 Outer case cabinet 1 BB
2- 2 GDAI-A261WRW0 Bottom plate left 1 AP
2- 3 GDAI-A286WRW0 Bottom plate right 1 AN
2- 4 GLEGPA019WRE0 Foot 2 AD
2- 5 GLEGPA067WRF0 Foot 1 AE
CONTROL PANEL PARTS
3- 1 CPWBFA725WRK0 Power unit 1 BC
3- 1A QCNCMA394DRE0 2-pin connector(CN-A) 1 AD
3- 1B QCNCMA275DRE0 2-pin connector(CN-B) 1 AB
3- 1C QCNCMA422DRE0 9-pin connector(CN-C) 1 AF
3- 1D FW-VZA196DRE0 Lead wire harness (WH-1) 1 AD
3- 1E LHLD-A171WRF0 LED holder 1 AE
C1 RC-KZA087DRE0 Capacitor 0.1µF 50V 1 AB
C2 VCEAB31EW108M Capacitor 1000µF 25V 1 AE
C5 VCEAB31VW106M Capacitor 10µF 35V 1 AA
D1-4 VHD11ES1///-1 Diode (11ES1) 4 AB
D5-8 VHD1SS270A/-1 Diode (1SS270ATA) 4 AA
LD1-5 VHPSLZ381A9-3 Light emitting diode 5 AC
Q2 VS2SA933S//-3 Transistor (2SA933) 1 AB
Q3 VSKRC243M//-3 Transistor (KRC243M) 1 AB
R3 VRD-B12HF751J Resistor 750 ohm 1/2W 1 AA
R4 VRD-B12EF270J Resistor 27 ohm 1/4W 1 AA
R5 VRD-B12EF472J Resistor 4.7k ohm 1/4W 1 AA
R6 VRD-B12EF332J Resistor 3.3k ohm 1/4W 1 AA
Jumper 6 VRD-B12EF151J Resistor 150 ohm 1/4W 1 AA
RY1 RRLY-A021DRE0 Relay (OJSH112LM-UL) 1 AH
RY2 RRLY-A094DRE0 Relay (OMIF-S-112LM) 1 AN
SP1 RALM-A014DRE0 Buzzer (PKM22EPT-THAI) 1 AG
T1 RTRNPA108DRE0 Transformer 1 AR
VRS1 RH-VZA032DRE0 Varistor (10G471K) 1 AE
3- 2 DPWBFB703WRK0 CPU unit 1 BE
3- 3 FPNLCB312WRK0 Control panel frame with key unit 1 BB
3- 3-1 FUNTKA823WRE0 Key unit 1 AX
3- 4 PSHEPA588WRE0 LED sheet 1 AE
3- 5 JBTN-B069WRF0 Open button 1 AF
3- 6 MSPRCA050WRE0 Open button spring 1 AB
3- 7 XEPSD30P08XS0 Screw ; 3mm x 8mm 4 AA
OVEN PARTS
4- 1 LANGQA456WRP0 Noise filter angle 1 AG
4- 2 PCUSGA312WRP0 Cushion 1 AB
4- 3 PHOK-A095WRF0 Latch hook 1 AN
∆
4- 4 LBNDKA099WRW0 Capacitor holder 1 AD
4- 5 NFANJA029WRE0 Fan blade 1 AL
4- 6 PDUC-A652WRP0 Fan duct 1 AU
4- 7 FOVN-A375WRT0 Oven cavity 1 BH
∆
4- 8 LANGFA175WRP0 Chassis support 1 AX
10
Note: The parts marked "∆" may cause undue microwave exposure.
The parts marked "*" are used in voltage more than 250V.
REF. NO. PART NO. DESCRIPTION Q'TY CODE
4- 9 LANGQA452WRP0 Partition angle 1 AK
4-10 LANGQA454WRP0 MG thermo angle 1 AH
4-11 MLEVPA194WRF0 Switch lever 1 AG
4-12 NCPL-A045WRF0 Coupling 1 AH
4-13 PPACGA084WRF0 TTM packing 1 AF
4-14 PCOVPA275WRE0 Waveguide cover 1 AR
4-15 PCUSGA339WRP0 Cushion 2 AG
4-16 PCUSUA212WRP0 Cushion 1 AB
4-17 PCUSUA235WRP0 Cushion 1 AF
4-18 PCUSUA376WRP0 Cushion 1 AG
4-19 LSTPPA162WRF0 Door stopper 1 AE
DOOR PARTS
5 CDORFA773WRK0 Door assembly 1 BL
∆
∆
5- 1 FDORFA303WRT0 Door panel 1 BA
5- 2 PSHEPA382WRE0 Sealer film 1 AH
5- 3 GWAKPA505WRR0 Door frame 1 AY
∆
5- 4 HPNL-A673WRR0 Door screen 1 AT
5- 5 GCOVHA370WRF0 Choke cover 1 AM
∆
5- 6 LSTPPA139WRF0 Latch head 1 AF
5- 7 MSPRTA084WRE0 Latch spring 1 AB
5- 8 XCPSD40P08000 Screw : 4mm x 8mm 1 AA
5- 9 XCPSD40P08WN2 Screw : 4mm x 8mm 1 AC
R-350A
MISCELLANEOUS
6- 1 FROLPA079WRK0 Turntable support 1 AQ
6- 2 NTNT-A084WRE0 Turntable tray 1 AR
6- 3 FW-VZB602WRE0 Main wire harness 1 AV
6- 4 PZET-A012WRE0 Terminal insulator 1 AB
6- 5 FW-VZB045WRE0 Switch harness 1 AG
6- 6 LHLDWA011WRE0 Purse lock M 1 AB
6- 7 TCAUHA214WRR0 Caution label 1 AC
6- 8 TINSEA714WRR0 Operation manual 1 AK
6- 9 TSPCNC497WRR0 Rating label 1 AD
6-10 TCADCA640WRR0 Cook book for microwave cooking 1 AX
6-11 TCADCA641WRR0 Cook book in Russian 1 AN
SCREWS,NUTS AND WASHERS
7- 1 XFPSD40P08K00 Screw : 4mm x 8mm 10 AA
7- 2 XFPSD30P06000 Screw : 3mm x 6mm 1 AA
7- 3 XHTSD40P08RV0 Screw : 4mm x 8mm 6 AA
7- 4 XOTSE40P08000 Screw : 4mm x 8mm 1 AA
7- 5 XOTSD40P12RV0 Screw : 4mm x 12mm 13 AA
7- 6 XOTSD40P12000 Screw : 4mm x 12mm 8 AA
HOW TO ORDER REPLACEMENT PARTS
To have your order filled prompty and correctly, please furnish the following information.
1. MODEL NUMBER 2. REF. NO.
3. PART NO. 4. DESCRIPTION
INFORMATION FOR PARTS CHANGE
The outer case cabinet will be changed as follows, and new part will be used for products from serial number 9710xxxxx.
Interchangeability
A. OLD
REF.NO.
2- 1 Outer case cabintet GCABUA608WRP0 1 GCABUA649WRP0 1 A Oct/ '97
NEW B. OLD
↔
DESCRIPTION OLD No.
NEW C. OLD
→
REPLACEMENT PART NO. nterchange- EFFECTIVE
Q'ty
NEW No.
11
NEW D. OLD NEW
←
Q'ty
ability FROM CODE
R-350A
1
OVEN AND CABINET PARTS
A
B
C
4-17
2
4-18
1-11
4-9
1-10
1-4
7-2
3
45
2-1
7-5
7-3
4-10
1-13
6-7
4-16
7-1
1-8
6
7-5
A
7-5
B
7-4
C
6-9
D
4-7
4-12
E
4-14
2-2
F
7-3
7-6
2-4
2-5
G
7-6
H
1-12
7-6
6-5
4-13
1-16
7-1
7-3
x2
7-5
4-11
7-1
7-5
2-4
7-5
4-15
7-5
4-2
4-3
1-14
2-3
7-6
1-1
1-1
7-1
4-15
7-6
1-2
6-1
1-9
7-6
1-5
7-3
7-1
1-6
4-4
7-1
1-5
1-17
1-7
4-5
4-6
4-1
4-8
6-2
7-6
1-15
1-3
D
7-3
E
F
7-1
G
H
1
2
3
45
12
6
R-350A
1
CONTROL PANEL PARTS
A
3 - 3
B
3-3-1
C
3 - 5
2
3
3 - 4
3 - 2
3-1E
45
3 - 7
3 - 7
3 - 1
3 - 7
4-19
6
A
B
C
D
E
5-4
F
3 - 6
5-3
DOOR PARTS
5-5
D
5-9
5
5-2
5-8
5-1
E
F
5-7
5-6
G
6-3
H
Actual wire harness may be different from illustration.
1
2
MISCELLANEOUS
6-4
3
13
45
6
G
H
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