Sharp R330ak Owner's Manual

R-310AK
R-330AK
R-330AW

SUPPLEMENTAL SERVICE MANUAL

S1702R330APK/

MICROWAVE OVEN

FOR O VENS FR OM JANUARY 1997 PRODUCTION

MODELS

R-310AK
R-330AK
R-330AW

In the interest of user-safety the oven should be restored to its original condition and

only parts identical to those specified should be used.

This is a supplemental Service Manual for Models R-310A K, R-330A K and R-330AW.
This supplemental service manual is mainly described the touch control panel parts information for the ovens from
January 1997 production. Use this supplemental manual together with the Base Model Service Manual (Refer No.
is S8605R330APK/) for complete operation, service information, etc..

TABLE OF CONTENTS

Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICE TO

AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ...................INSIDE FRONT COVER

BEFORE SERVICING ......................................................................................................INSIDE FRONT COVER

FOREWORD.....................................................................................................................INSIDE FRONT COVER

TEST PROCEDURE ..............................................................................................................................................1

TOUCH CONTROL PANEL ASSEMBLY ..............................................................................................................3

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..................................................................9

PICTORIAL DIAGRAM ........................................................................................................................................10

POWER UNIT CIRCUIT ......................................................................................................................................11

CPU UNIT CIRCUIT ............................................................................................................................................13

PRINTED WIRING BOARD OF POWER UNIT ...................................................................................................15

PARTS LIST FOR CONTROL PANEL ................................................................................................................16

INFORMATION FOR PARTS CHANGING ..........................................................................................................17

SHARP ELECTRONICS CORPORATION

Service Headquarters: Sharp Plaza, Mahwah, New Jersey 07430-2135

R-310AK
R-330AK
R-330AW

SERVICE MANUAL

MICROWAVE OVEN

R-310AK/ R-330AK/ R-330AW

FOREWORD

This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service
Information for the SHARP MICROWAVE OVENS, R-310AK, R-330AK, R-330AW.

It is recommended that service personnel carefully study the entire text of this manual so that they will be qualified to render
satisfactory customer service.

Check the interlock switches and the door seal carefully. Special attention should be given to avoid electrical shock and
microwave radiation hazard.

This supplemental service manual contains update information only. Please refer to base model service manual
(Refer No. is S8605R330APK/) for complete service information.

PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

(a) Do not operate or allow the oven to be operated with the door open.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other

microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3) seal
and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and latches, (5)
evidence of dropping or abuse.

(c) Before turning on microwave power for any service test or inspection within the microwave generating

compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
integrity, and connections.

(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and

transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before
the oven is released to the owner.

(e) A microwave leakage check to verify compliance with the Federal Performance Standard should be performed

on each oven prior to release to the owner.

BEFORE SERVICING

Before servicing an operative unit, perform a microwave emission check as per the Microwave Measurement
Procedure outlined in this service manual.
If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS CORPO­RATION immediately @1-800-237-4277.

If the unit operates with the door open, service person should 1) tell the user not to operate the oven and

2) contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration's Center for
Devices and Radiological Health immediately.

Service personnel should inform SHARP ELECTRONICS CORPORATION of any certified unit found with
emissions in excess of 4mW/cm2. The owner of the unit should be instructed not to use the unit until the oven
has been brought into compliance.

PROCEDURE

LETTER

J TOUCH CONTROL PANEL ASSEMBLY TEST

R-310AK
R-330AK
R-330AW

TEST PROCEDURES

COMPONENT TEST

The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore,
unlike conventional microwave ovens, proper maintenance cannot be performed with only a voltmeter
and ohmmeter.
In this service manual, the touch control panel assembly is divided into two units, Control Unit and Key
Unit, and also the Control Unit is divided into two units, CPU Unit and Power Unit, and troubleshooting
by replacement is described according to the symptoms indicated.

1. Key Unit. Note : Check key unit ribbon connection before replacement.
The following symptoms indicate a defective key unit. Replace the key unit.
a) When touching the pads, a certain pad produces no signal at all.
b) When touching a number pad, two figures or more are displayed.
c) When touching the pads, sometimes a pad produces no signal.

2. Control Unit
The following symptoms indicate a defective control unit. Before replacing the control unit, perform
the Key unit test (Procedure K) to determine if control unit is faulty.

2-1 In connection with pads.

a) When touching the pads, a certain group of pads do not produce a signal.
b) When touching the pads, no pads produce a signal.

2-2 In connection with indicators

a) At a certain digit, all or some segments do not light up.
b) At a certain digit, brightness is low.
c) Only one indicator does not light.
d) The corresponding segments of all digits do not light up; or they continue to light up.
e) Wrong figure appears.
f) A certain group of indicators do not light up.
g) The figure of all digits flicker.

2-3 Other possible problems caused by defective control unit.

a) Buzzer does not sound or continues to sound.
b) Clock does not operate properly.
c) Cooking is not possible.

Note: When defective components, the Power Unit or Key Unit are replaced, the defective part or parts

must be properly packed for return in the shipping carton, with its cushion material, in which the
new replacement part was shipped to you.

L RELAY TEST

Remove the outer case and check voltage between Pin No. 3 of the 2 pin connector (A) and the common
terminal of the relay RY2 on the control unit with an A.C. voltmeter.
The meter should indicate 120 volts, if not check oven circuit.
RY1 and RY2 Relay Test

These relays are operated by D.C. voltage
Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation.

DC. voltage indicated ............. Defective relay.

DC. voltage not indicated ........ Check diode which is connected to the relay coil. If diode is good, control

RELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTS

RY1 Approx. 24.5V D.C. Approx. 14.0 D.C. Oven lamp / Turntable motor / Cooling fan motor
RY2 Approx. 24.0V D.C. Approx. 12.8 D.C. Power transformer

unit is defective.

R-330AK/AW R-310AK

1

R-310AK
R-330AK
R-330AW

PROCEDURE

LETTER

N PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD

TEST PROCEDURES

COMPONENT TEST

(PWB) IS OPEN

To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the
PWB, this foil pattern acts as a fuse. If the foil pattern is open, follow the troubleshooting guide given
below for repair.
Problem: POWER ON, indicator does not light up.

STEPS OCCURRENCE CAUSE OR CORRECTION

1 The rated AC voltage is not present between Check supply voltage and oven power cord.

Pin No. 3 of the 2-pin connector (A) and the
common terminal of the relay RY2.

2 The rated AC voltage is present at primary Low voltage transformer or secondary circuit defective.

side of low voltage transformer. Check and repair.

3 Only pattern at "a" is broken. *Insert jumper wire J1 and solder.

4 Pattern at "a" and "b" are broken. *Insert the coil RCILF2003YAZZ between "c" and "d".

XH

CN - A

VH

3

3

NOTE:*At the time of making these repairs,

make a visual inspection of the varistor.
Check for burned damage and exam­ine the transformer with a tester for the
presence of layer short-circuit (check
the primary coil resistance which is ap­proximately 212Ω ± 10% (for R-330AK/
AW), 563Ω ± 10% (for R-310AK)). If
any abnormal condition is detected,
replace the defective parts.

c

(J1)

a

b

d

(COM)

AC

HVT

RY2

2

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

R-310AK
R-330AK
R-330AW

The touch control section consists of the following units.
(1) Key Unit

(2) Control Unit (The Control Unit consists of Power Unit and

CPU Unit).

The principal functions of these units and the signals com­municated among them are explained below.

Key Unit (R-330AK/AW)

The key unit is composed of a matrix, signals generated in
the LSI are sent to the key unit through P20 - P27.
When a key pad is touched, a signal is completed through
the key unit and passed back to the LSI through P74 - P77
to perform the function that was requested.

Key Unit (R-310AK)

The key unit is composed of a matrix, signals generated in
the LSI are sent to the key unit through P73, P81, P82, P83,
P90 and P91

.

When a key pad is touched, a signal is completed through
the key unit and passed back to the LSI through P60 - P63
to perform the function that was requested.

Control Unit

Control unit consists of LSI, ACL circuit, indicator circuit,
power source circuit, relay circuit, buzzer circuit, synchroniz­ing signal circuit, absolute humidity sensor circuit and back
light circuit.

2) Indicator Circuit (R-310AK)

This circuit consists of 12 segments and 3 common elec­trodes using a Liquid Crystal Display.

3) Power Source Circuit

This circuit generates voltages necessary in the control
unit from the AC line voltage.
In addition, the synchronizing signal is available in order to
compose a basic standard time in the clock circuit.

Symbol Voltage Application

VC -5.3V LSI(IC1)

4) Relay Circuit

A circuit to drive the magnetron, fan motor, turntable motor
and light the oven lamp.

5) Buzzer Circuit

The buzzer is responsive to signals from the LSI to emit
audible sounds (key touch sound and completion sound).

6) Synchronizing Signal Circuit

The power source synchronizing signal is available in order
to compose a basic standard time in the clock circuit.
It accompanies a very small error because it works on
commercial frequency.

7) Door Sensing Switch

A switch to “tell” the LSI if the door is open or closed.

1) ACL

This circuit generates a signal which resets the LSI to the
initial state when power is supplied.

2) Indicator Circuit (R-330AK/AW)

This circuit consists of 25 segments and 4 common elec­trodes using a Liquid Crystal Display.

8) Back Light Circuit

A circuit to drive the back light (Light emitting diodes LD1­LD5).

9) Absolute Humidity Sensor Circuit (R-330AK/AW)

This circuit detects moisture of the cooking food to allow its
automatic cooking.

3

R-310AK

A

B

0.1 sec.

2 sec.

H : GND

L : -5V
H : GND

L : -5V

R-330AK
R-330AW

DESCRIPTION OF LSI

LSI(IZA757DR) : R-330AK/AW

The I/O signal of the LSI(IZA757DR) is detailed in the following table.

Pin No. Signal I/O Description

1 C1 IN Terminal not used.
2 VL1 IN

Power source voltage input terminal.

Standard voltage for LCD.

3-6 AN7-AN4 IN

Terminal to change cooking constant 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 Terminal not used.
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 AN1 IN

AH sensor input.

This input is an analog input terminal from the AH sensor circuit, and connected to the A/D

converter built into the LSI.

10 AN0 IN Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an

analog input terminal from the AH sensor circuit, and connected to the A/D converter built into

the LSI.

11-13 P57-P55 OUT Terminal not used.

14 P54 OUT

Signal to sound buzzer (2.0KHz).

A: key touch sound.

B: Completion sound.

15-18 P53-P50 OUT Terminal not used.
19-23 P47-P43 OUT Used for initial balancing of the bridge circuit (absolute humidity sensor).

24 INT0 IN

Signal synchronized with commercial power source frequency.

This is basic timing for time processing of LSI.

16.7 msec.

H : GND

L : -5V

25-26 P41-P40 OUT Terminal not used.

27 P77 IN

Signal coming from touch key.

When either G12 line on key matrix is touched, a corresponding signal out of P20 - P27 will

be input into P77. When no key is touched, the signal is held at “H” level.

28 P76 IN

Signal similar to P77.

When either G11 line on key matrix is touched, a corresponding signal will be input into P76.

29 P75 IN

Signal similar to P77.

When either G10 line on key matrix is touched, a corresponding signal will be input into P75.

30 P74 IN

Signal similar to P77.

When either G9 line on key matrix is touched, a corresponding signal will be input into P74.

31 P73 OUT

32 P72 OUT

Oven lamp, fan motor and turntable motor driving signal.

To turn on and off shut off relay (RY1). The

16.7 msec.

square waveform voltage is delivered to the

RY1 driving circuit and RY2 control circuit.

Magnetron high-voltage circuit driving signal.

To turn on and off the cook relay (RY2). The

signals holds “L” level during microwave cook-

ing 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.

OFF

P-HI

OFF OFF

P-70

4

During cooking

ON

24 sec.

ON

8 sec.

H : GND

L : -5V

H : GND

L : -5V
H : GND

L : -5V

Pin No. Signal I/O Description

33 P71 OUT Terminal not used.
34 P70 IN Connected to VC.
35 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.

36-37 P81-P80 OUT Terminal not used.

38 XIN IN

Internal clock oscillation frequency input setting.

The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to XIN terminal.

39 XOUT OUT

Internal clock oscillation frequency control output.

Output to control oscillation input of XOUT.

40 VSS IN

Power source voltage : -5.1V.

VC voltage of power source circuit input.

41 P27 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one
of G8 line keys on key matrix is touched.

42 P26 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one
of G7 line keys on key matrix is touched.

43 P25 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one
of G6 line keys on key matrix is touched.

44 P24 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one
of G5 line keys on key matrix is touched.

45 P23 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one
of G4 line keys on key matrix is touched.

46 P22 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one
of G3 line keys on key matrix is touched.

47 P21 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one
of G2 line keys on key matrix is touched.

48 P20 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P74 - P77 terminal while one

of G1 line keys on key matrix is touched.
49-50 P17-P16 OUT Terminal not used.
51-62
63-66

SEG39-SEG28 OUT Terminal not used.
SEG27-SEG24 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.)

SEG 27 (63) ........................ S0 SEG 12 (78).......................... S5

SEG 26 (64) ........................ S1 SEG 11 (79).......................... S6

SEG 25 (65) ........................ S2 SEG 10 (80).......................... S7

SEG 24 (66) ........................ S3 SEG 9 (81)........................... S8

SEG 22 (68) ........................ S4 SEG 8 (82)........................... S9

SEG 21 (69) ...................... S26 SEG 6 (84)......................... S10

SEG 20 (70) ...................... S25 SEG 5 (85)......................... S11

SEG 19 (71) ...................... S24 SEG 4 (86)......................... S12

SEG 18 (72) ...................... S23 SEG 3 (87)......................... S13

SEG 17 (73) ...................... S22 SEG 2 (88)......................... S14

SEG 16 (74) ...................... S21 SEG 1 (89)......................... S15

SEG 14 (76) ...................... S20 SEG 0 (90)......................... S16

SEG 13 (77) ...................... S19

5

R-310AK
R-330AK
R-330AW

R-310AK
R-330AK
R-330AW

Pin No. Signal I/O Description

67 SEG23 OUT Terminal not used.

68-74

SEG22-SEG16 OUT Segment data signal.

Signal similar to SEG27.

75 SEG15 OUT Terminal not used.

76-82

SEG14-SEG8 OUT Segment data signal.

Signal similar to SEG27.

83 SEG7 OUT Terminal not used.

84-90

SEG6-SEG0 OUT Segment data signal.

Signal similar to SEG27.

91/92

VCC/VREF IN Connected to GND.

93 AVSS IN Connected to VC.
94 COM3 OUT

Common data signal: COM3.

Connected to LCD (Pin No. C0).

95 COM2 OUT

Common data signal: COM2.

Connected to LCD (Pin No. C1).

96 COM1 OUT

Common data signal: COM1.

Connected to LCD (Pin No. C2).

97 COM0 OUT

Common data signal: COM0.

Connected to LCD (Pin No. C3).

98-99 VL3-VL2 IN

Power source voltage input terminal.

Standard voltage for LCD.

100 C2 IN Terminal not used.

LSI(IZA758DR) : R-310AK

The I/O signal of the LSI(IZA758DR) is detailed in the following table.

Pin No. Signal I/O Description

1-12

SEG0-SEG11 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.)

SEG 0 (1) ...................................S12 SEG 6 (7) ....................................S6

SEG 1 (2) ...................................S11 SEG 7 (8) ....................................S5

SEG 2 (3) ...................................S10 SEG 8 (9) ....................................S4

SEG 3 (4) .....................................S9 SEG 9 (10) ..................................S3

SEG 4 (5) .....................................S8 SEG 10 (11) ................................S2

SEG 5 (6) .....................................S7 SEG 11(12) .................................S1

13 R60 IN

Signal coming from touch key.

When either G12 line on key matrix is touched, a corresponding signal out of R73, R81-R83
and R90-R91 will be input into R60. When no key is touched, the signal is held at "H" level.

14 R61 IN

Signal similar to R60.

When either G11 line on key matrix is touched, a corresponding signal will be input into R61.

15 R62 IN

Signal similar to R60.

When either G10 line on key matrix is touched, a corresponding signal will be input into R62.

16 R63 IN

Signal similar to R60.

When either G9 line on key matrix is touched, a corresponding signal will be input into R63.

17 AIN0 IN

To input signal which communicates the door open/close information to LSI.

Door close "H" level signal (0V). Door open "L" level (-5V)

18-20

AIN1-AIN3 IN Terminal to change functions 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 function.

21 VSS IN

Power source voltage: -5V

VSS voltage of power source circuit input.

6

Pin No. Signal I/O Description

16.7 msec.

During cooking

H : GND

L : -5V

16.7 msec.

H : GND

L : -5V

22 R70 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.

23 PULSE OUT

Signal to sound buzzer (2.0 kHz).

A: key touch sound.

B: Completion sound.

24 R72 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.

R-310AK
R-330AK
R-330AW

OFF

P-HI

OFF OFF

P-70

ON

ON

24 sec.

8 sec.

H : GND

L : -5V
H : GND

L : -5V

(ON and OFF times for other power level.)

0.1 sec.

A

2 sec.

B

H : GND

L : -5V
H : GND

L : -5V

25 R73 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one

of G8 line keys on key matrix is touched.

26 INT2 IN

Signal synchronized with commercial power source frequency.

This is the basic timing for time processing of LSI.

27 R81 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one

of G7 line keys on key matrix is touched.

28 R82 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one

of G6 line keys on key matrix is touched.

29 R83 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one

of G5 line keys on key matrix is touched.

30 R90 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one

of G4 line keys on key matrix is touched.

31 R91 OUT

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one

of G3 line keys on key matrix is touched.

32 R92 OUT Terminal not used.
33 XIN IN

Internal clock oscillation frequency setting input.

The internal clock frequency is set by inserting the capacitor and resistor circuit with respect

to XOUT terminal.

34 XOUT OUT

Internal clock oscillation frequency control output.

Output to control oscillation input of XIN.

35 RESET IN

Auto clear terminal.

Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set "L"

level the moment power is supplied, at this time the LSI is reset. Thereafter set at "H" level.

36 HOLD IN/OUT Connected to GND.
37 VLC IN

Signal synchronized with commercial power source frequency.

Signal similar to VSS.

38 COM1 OUT

Common data signal: COM1.

Connected to LCD (Pin No. C1)

39 COM2 OUT

Common data signal: COM2.

Connected to LCD (Pin No. C2)

7

R-310AK
R-330AK
R-330AW

Pin No. Signal I/O Description

40 COM3 OUT Common data signal: COM1.

Connected to LCD (Pin No. C3)
41 COM4 OUT Terminal not used.
42 VDD IN

Power source voltage input terminal.

Connected to GND.

ABSOLUTE HUMIDITY SENSOR CIRCUIT (R-330AK/AW)

(1) Structure of Absolute Humidity Sensor

The absolute humidity sensor includes two thermistors as
shown in the illustration. One thermistor is housed in the
closed vessel filled with dry air while another in the open
vessel. Each sensor is provided with the protective cover
made of metal mesh to be protected from the external
airflow.

ventilation opening for sensing

Sensing part
(Open vessel)

Thermistors

Sensing part
(Closed vessel)

(2) Operational Principle of Absolute Humidity Sensor

The figure below shows the basic structure of an absolute
humidity sensor. A bridge circuit is formed by two thermistors
and two resistors (R1 and R2).
The output of the bridge circuit is to be amplified by the
operational amplifier.
Each thermistor is supplied with a current to keep it heated
at about 150˚C (302˚F), the resultant heat is dissipated in
the air and if the two thermistors are placed in different
humidity conditions they show different degrees of heat
conductivity leading to a potential difference between them
causing an output voltage from the bridge circuit, the
intensity of which is increased as the absolute humidity of
the air increases. Since the output is very minute, it is
amplified by the operational amplifier.

Absolute humidity vs,

R1

R2

Operational
amplifier

+

-



S : Thermistor
open vessel

C : Thermistor
closed vessel

Output
voltage

Output voltage

C

S

R3

output voltage characterist

Absolute humidity (g/m )

2

(3) Detector Circuit of Absolute Humidity Sensor Circuit

This detector circuit is used to detect the output voltage of
the absolute humidity circuit to allow the LSI to control
sensor cooking of the unit. When the unit is set in the sensor
cooking mode, 16 seconds clearing cycle occurs than the
detector circuit starts to function and the LSI observes the
initial voltage available at its AN1 terminal.

With this voltage given, the switches SW1 to SW5 in the LSI
are turned on in such a way as to change the resistance
values in parallel with R107 ~ R111. Changing the resistance
values results in that there is the same potential at both F­3 terminal of the absolute humidity sensor and AN0 terminal
of the LSI. The voltage of AN1 terminal will indicate about

-2.5V. This initial balancing is set up about 16 seconds after
the unit is put in the Sensor Cooking mode. As the sensor
cooking proceeds, the food is heated to generate moisture
by which the resistance balance of the bridge circuit is
deviated to increase the voltage available at AN1 terminal
of the LSI.
Then the LSI observes that voltage at AN1 terminal and
compares it with its initial value, and when the comparison
rate reaches the preset value (fixed for each menu to be
cooked), the LSI causes the unit to stop sensor cooking;
thereafter, the unit goes in the next operation automatically.
When the LSI starts to detect the initial voltage at AN1
terminal 16 seconds after the unit has been put in the
Sensor Cooking mode, if it is not possible to balance, of the
bridge circuit due to disconnection of the absolute humidity
sensor, ERROR will appear on the display and the cooking
is stopped.

1) Absolute humidity sensor circuit

C. Thermistor in 
closed vesssl
S. Thermistor in
open vessel

F-1
C

F-3

3.57k

S

F-2

VA : -15V

R112

R105

3.32k

R90

C101

1.8k


R107

R108
R109
R110
R111

R106

0.1

R101

uF

37.4k

47k

C103

+

IC2

-

VA : -15V

620k

300k
150k

75k

R102
360k

0.01uF

C102

0.015uF

R103

10k

VC : -5V

R104

47k

0.01uF

C104

D101

SW1

19

R47

SW2

20

R46

SW3

21

R45

SW4

22

R44

SW5

23

R43

10

AN0

LSI
(IC1)

9

AN1

8

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE.

DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING
AFTER REMOVING OUTER CASE.

CONTROL PANEL ASSEMBLY REMOVAL

R-310AK
R-330AK
R-330AW

1. Disconnect oven from power supply and remove outer
case.

2. Discharge high voltage capacitor.

3. Disconnect wire leads from the door sensing switch and the
oven cavity front flange.

4. Disconnect the wire leads from panel components.

5. Make one (1) tab of the oven cavity front plate straight
holding the control panel assembly to the oven flange.

6. Slide the control panel assembly upward and remove it.

7. Now, individual components can be removed.

NOTE: 1. Before attaching a new key unit, wipe off remaining

adhesive on the control panel frame surfaces
completely with a soft cloth soaked in alcohol.

2. When attaching the key unit to the control panel
frame, adjust the upper edge and right edge of
the key unit to the correct position of control panel
frame.

3. Stick the key unit firmly to the control panel frame
by rubbing with soft cloth not to scratch.

CPU UNIT AND POWER UNIT
NOTE: When soldering the CPU unit and the power unit, make

sure both the CPU unit and power unit are parallel, as
shown figure C-9.

CPU unit

Connector

Solder

These should be parallel

Power unit

Figure C-9. Side view of CPU unit and Power unit

Handle the CPU unit carefully so that the ribbon cable
does not come off. Because the ribbon cable is sticked
on the LCD and the printed wiring board only by heated
paste.

Ribbon cable

Liquid Crystal

Display (LCD)

of CPU unit

Printed wiring board 

Figure C-10. CPU unit

WARNING FOR WIRING

To prevent an electric shock, take the following manners.

1. Before wiring,

1) Disconnect the power supply.

2) Open the door and wedge the door open.

3) Discharge the high voltage capacitor and wait for 60 seconds.

2. Don’t let the wire leads touch to the following parts;

1) High voltage parts:
Magnetron, High voltage transformer, High voltage capacitor and High voltage rectifier assembly.

2) Hot parts:
Oven lamp, Magnetron, High voltage transformer and Oven cavity.

3) Sharp edge:
Bottom plate, Oven cavity, Weveguide flange, Chassis support and other metallic plate.

4) Movable parts (to prevent a fault)
Fan blade, Fan motor, Switch, Switch lever, Open button.

3. Do not catch the wire leads in the outer case cabinet.

4. Insert the positive lock connector certainly until its pin is locked. And make sure that the wire leads should not come off
even if the wire leads is pulled.

5. To prevent an error function, connect the wire leads correctly, referring to the Pictorial Diagram.

9

R-310AK
R-330AK
R-330AW

1

A

BLKBLK

B

OVEN

THERMAL CUT-OUT

C

2

GRN

N

H

BLK

NOTE:

The grounding conductor of

the power supply cord has

been grounded by power

supply cord fixing screw.

The screw must allways be

kept tight.

OUTER CASE 

SWITCH (Upper)

N.O.

BLK

WHT

COM.

BLK

3

NOTE:

The neutral (WHT) wire must be

connected to the terminal with "N"

mark on the power supply cord.



POWER SUPPLY 

CORD 120V 60Hz

N.O.

COM.

OUTER CASE 

SWITCH (Lower)

WHT

WHT

WHT

45

RECTIFIER
H.V.

HIGH VOLTAGE

MAGNETRON

HIGH VOLTAGE COMPONENTS

RED

GRY

GRY

CAPACITOR

POWER 

TRANSFORMER

6

A

B

C

D

BLK

WHT

OVEN LAMP 

AND SOCKET

E

Hot (BLK) wire must be

NOTE:

F

GRY

N.O.

DOOR

SENSING

SWITCH

G

AH SENSOR ( for R-330AK/AW only)

BLUE MARK

THERMAL CUT-OUT (MG.)

connected to the terminal

with blue mark on the

oven light socket.

GRN

COM.

GRY

BLK

GRN

BLK

CN-A

BLK
1

D

BLK

BLK

GRY

WHT

BLK

BLK

WHT

FAN MOTOR

TURNTABLE

MOTOR

BLK

2

3 WHT

&

FUSE

HOLDER

BLK

RY2 (COM)

BLK

RED

RED

RY2 (N.O.)

RED

WHT

N.C.

COM.

WHT

NO

MONITOR

SWITCH

SECONDARY

GRY

WHT

COM.

INTERLOCK

SWITCH

WHT

one "FW-VZB572WRE0" and both wire harness are

interchangeable.

NOTE: The parts number of the main wire harness is the same as old

E

Figure S-1. Pictorial Diagram

F

G

BLK

RED

WHT

CN-F

123

H

CONTROL UNIT

1

R-330AK/AW

CN-G

CN-F

IC1

1 2 3

SH-A

SH-B

RY1

2

RY2

T1

PRIMARY

INTERLOCK 

RELAY

N.O.

1

CN-A

3

COM.

CONTROL UNIT

3

10

SH-A

R-310AK

CN-G

IC1

SH-B

RY1

RY2

T1

PRIMARY

INTERLOCK 

RELAY

N.O.

CN-A

1

3

COM.

45

H

6

R-310AK
R-330AK
R-330AW

1

A

B

AC

C

D

2

A 3

VRS1

a

b

d

c

1

2

(J1)

3

D1-D4

T1

11ES1



3

D3

4

D4

VR

RY1

LD1-LD5

D1

D2

45

LD1 LD2 LD3 LD4 LD5

WH-1

V

R

R4 27

D5

C1 0.1µ/50v

D6

+
–

Q2 2SA933

R5 4.7k

C2 1000µ/25v

R3 910 1/2w

SP1

C 1

C 2

C 3

C 4

C 5

6

A

B

C

D

TURNTABLE
MOTOR
OVEN LAMP
FAN
MOTOR

E

MICRO

AC

F

G

A 1

N.O.

COM

RY2

D7

R6 3.3k

C 6

C 7

D8

E

C 8

C 9

Q3 KRC243M

F

SH-B

B 1

+

C5
10µ/35v

–

B 2



SH-A

G

J2

VR

H

1

NOTE

Figure S-2(a). Power Unit Circuit (R-310AK)

2

: IF NOT SPECIFIED, 1/4w ± 5%
: IF NOT SPECIFIED, 1SS270A

3

45

11

H

6

R-310AK
R-330AK
R-330AW

1

A

B

AC

C

D

2

A 3

VRS1

a

b

d

c

1

2

(J1)

3

T1



3

D3

4

D4

V

R

RY1

D1-D4
11ES1

LD1-LD5

D1

D2

45

LD1 LD2 LD3 LD4 LD5

WH-1

R

V

R4 27

D5

C1 0.1µ/50v

D6

+
–

Q2 2SB1238

R5 4.7k

ZD1

R1 2.4k

C2 1000µ/35v

HZ16-1

Q1

C3 0.1µ/50v

+
–

C4 10µ/35v

R3 510

2SB1238

R2 680 1/2w

SP1

C 1

C 2

C 3

1/2w

C 4

C 5

6

A

B

C

D

TURNTABLE
MOTOR
OVEN LAMP
FAN
MOTOR

E

MICRO

AC

F

G

A 1

N.O.

COM

RY2

D7

R6 3.3k

C 6

C 7

E

D8

C 8

C 9

Q3 KRC243M

F

SH-B

B 1

+

C5
10µ/35v

–

B 2



SH-A

G

J2

V

R

H

1

NOTE

Figure S-2(b). Power Unit Circuit (R-330AK/AW)

2

: IF NOT SPECIFIED, 1/4w ± 5%
: IF NOT SPECIFIED, 1SS270A

3

45

12

H

6

R-310AK
R-330AK
R-330AW

1

A

B

LIQUID CRYSTAL DISPLAY

C

D

E

ON DEF. LBS. QTY. CHECK

0.1µ/50v
C13

2SA1037AK
Q10

R10 1k

+

2

C1
C2
C3


S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1

R11 15k

UDZ4.3B
ZD10

C11 47µ/16v

–

C10 0.01µ/25v

D10

3

45

6

A

R51 15k

0.01µ/25v
C70

VDD

421

SEG 0

COM 4

COM 3

40

SEG 1

SEG 2

COM 2

COM 1

5

SEG 3

SEG 4

VLC

HOLD

SEG 5

SEG 6

/50v
33p

C71

RESET

35

SEG 7

X IN

X OUT

10

SEG 8

SEG 9

R71 10kF

R92

R91

R90

R83

30

R60

R61

SEG10

SEG11

R82

15

R62

R81

R73

R72

R70

INT 2

PULSE

22

25

IC1 IZA758DR

21

R63

VSS

AIN0

AIN1

AIN2

AIN3

R52 15k

R53 15k

R54 15k

C 6 C 5 C 4 C 3 C 2 C 1

R55 15k

C 7

R56 15k

C 8

POPCORN

54321

C 9

C10

C61 330p/50v

DINNER

REHEAT

CASSE-

FRESH

VEGETA-

COMPU



09876

START

MINUTE

STOP

PLATE

CLEAR

BAKED

POTATO

BEVERAGE

FRESH

ROLL / 

ROLE



BLE



FROZEN

ROLL / 

TIMER

CLOCK

DEFROST



PLUS

LEVEL

POWER

C12

C11

MUFFIN



MUFFIN



KEY UNIT

B

C

C62 330p/50v
C63 330p/50v
C64 330p/50v

R61 220k

(J14)(J15)

R62 220k
R63 220k
R64 220k

D

(J12)(J13)
(J10)(J11)

R57 15k

R58 15k

R59 15k

: 4.7k x 3
(J11),(J13),(J15)

R60 15k

R20 15k

0.01µ/25v

C12 0.01µ/25v

C40

R41 4.7k

R40 15k

E

Figure S-3(a). CPU Unit Circuit (R-310AK)

F

G

C 1

NC

C 2

GND

H

1

R14 15k

C 3

VC

2

R13 15k

INT

Q30

KRA101S

C20

R12 15k

C 4

C 5

BUZZER

3

0.1µ/50v

C 6

RY1

13

Q20

KRA101S

Q22

KRA105S

: IF NOT SPECIFIED, 1/10w ± 5%

D20

D40

: IF NOT SPECIFIED, 1SS355

NOTEH

C 7

C 8

C 9

RY2

(RY3)

DOOR

SWITCH

45

F

G

H

6

R-310AK
R-330AK
R-330AW

1

A

B

LIQUID CRYSTAL DISPLAY

C

D

COOK SENSOR LBS KG DEF HELP

S0
S1
S2
S3
S4
S26
S25
S24
S23
S22
S21
S20
S19
S5
S6
S7

S8
S9

S10
S11
S12
S13
S14
S15
S16

C0
C1
C2
C3

2

3

45

6

R67 15k

G 1

HELP

STOP

LEVEL

CLEAR

POWER

G 6 G 5 G 4 G 3 G 2

G 7

G 8

C60 330p/50v
C61 330p/50v
C62 330p/50v

C63 330p/50v
R72 100k
R73 100k

CUSTOM

BAKED

POPCORN

REHEAT

FROZEN

1

2
34

5

G 9

FRESH

POTATO

FRESH

DINNER

6
7
8

9
0

VEG

HARD

VEG

SOFT

SOUP

MEAT

GROUND

VEG

FROZEN

PLUS

MINUTE

TIMER

START

KITCHEN

G11 G10

FISH

SEAFOOD

COOK

COMPU

RICE

COMPU

DEFROST

HOT DOG

CLOCK

ON

TOUCH

G12

KEY UNIT

R66 15k

R65 15k

R64 15k

R63 15k

80

81

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG32
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0

VCC

VREF
AVSS
COM3
COM2
COM1
COM0

VL3
VL2

C2

100

C1 SEG10

VL1

AN7

AN6

AN5

AN4

AN3

AN2

C11 0.1µ/50v

1

AN1

IC1 IZA757DR

P57

P56

P55

P54

P53

P52

AN0

P51

SEG33



P50

P47

P46

P45

P44

P43

P41

INT0

SEG34

SEG35

P40

A.B.

SEG36

SEG37

P77

P76

C.

D.E.F.

SEG38

SEG39

P75

P74

51

50

P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
VSS

XOUT

XIN

P80

P81

RESET
P70
P71
P72
P73

31

30

4.7k
R50

1M
R80

R62 15k

R61 15k

R60 15k

A.
B.

CF1

CST4.00MGW

R74 100k

R104 47k

R75 100k

A

B

C

D

(J17)
(J15)

(J13)
(J11)

E

F

G

C 1

R14 10k

R10 1k

+

C 2

R13 10k

2SA1037AK
Q10

C10 47µ/16v

–

(J16 ) 4.7k

C30

(J14) 4.7k

(J12) 4.7k
(J10) 4.7k

R12 10k

0.1µ/50v
C12

R11 4.7k

ZD10 UDZ4.3B

C 3

R30 4.7k



C14

R15 4.7k

0.1µ/50v
C13

C 4



R31 15k

Q40

KRA101S



Q11

KRA101S

C 5

C20

C103

IC2

BA4558

C 6

C104

IC2

+

R101

D101

MA152

WA

0.1µ/50v

3.57kD
R112

0.1µ/50v

Q20 KRA101S

R103 10k

0.015µ/25v

C102

-

1.8kF

C101

3.32kD
R105

C 7

R102 360kF

R108 300kF

R107 620kF

R106 47k

330 1w
R90

Q22

KRA105S

D22

D30

C 8

C 9

C.D.E.

R110 75kF

R109 150kF

R111 37.4kF

F-2 F-3
F 1

F.



R71 15k

AH SENSOR

NOTE

R70 15k

R69 15k

R68 15k

: IF NOT SPECIFIED 1/10w ± 5%

: IF NOT SPECIFIED 1SS355

: IF NOT SPECIFIED 0.01µF/25v

E

Figure S-3(b). CPU Unit Circuit (R-330AK/AW)

F

G

VA

GND

H

1

VC

INT

BUZZER

2

RY1

RY2

3

14

(RY3)

DOOR

SWITCH

45

H

6

R-310AK
R-330AK
R-330AW

1

A

B

C

D

D7

0

SP1

2

3

45

LD1 LD2 LD3 LD4 LD5

DIP

1

CN - C

R5

2

3

9

D5

(C4)

R3

R6

4
5

(R2/J4)

(D9)

D8

BE

C5

Q3

(J3)

(J2)

6

D6

E

B

(ZD1)

0

0

R4

(C3)

C2

B

(Q1)

(R1)

WH-1

12

E

1

Q2

1

SH-B

1

(CN - B)

DOOR SW

WH-1

2

SH-A (GREEN)

2

6

A

B

C

D

OL FM AC

E

TTM

F

CN - A

G

H

RY1

13

13

T1

(1) (3)

VRS1

VH

XH

(COM)

AC

HVT

RY2

(J1)

DU

LOT NO.

1

3

OMIF

F

(7) (4)

OMIF

DU

E

7

6

C1
D4
D2
D1

4

D3

F

(RY3)

G

H

1

Figure S-4. Printed Wiring Board of Power Unit

2

3

45

15

6

R-310AK
R-330AK
R-330AW

PARTS LIST FOR CONTROL PANEL

REF. NO. PART NO. DESCRIPTION Q'TY CODE

CONTROL PANEL PARTS

3- 1 CPWBFA722WRK0 Power unit [R-310AK] 1 BB
3- 1 CPWBFA723WRK0 Power unit [R-330AK] 1 BD
3- 1 CPWBFA723WRK0 Power unit [R-330AW] 1 BD
3- 1A QCNCMA394DRE0 2-pin connector (CN-A) 1 AD
3- 1B QCNCMA422DRE0 9-pin connector (CN-C) 1 AF
3- 1C FW-VZA195DRE0 Switch harness A (SN-A) 1 AD
3- 1D FW-VZA197DRE0 Switch harness B (SN-B) 1 AD
3- 1E FW-VZA196DRE0 Lead wire harness (WH-1) 1 AD
3- 1F LHLD-A171WRF0 LED holder 1 AE
C1 RC-KZA087DRE0 Capacitor 0.1uF 50V 1 AB
C2 VCEAB31EW108M Capacitor 1000uF 25V [R-310AK] 1 AE
C2 VCEAB31VW108M Capacitor 1000uF 35V [R-330AK] 1 AF
C2 VCEAB31VW108M Capacitor 1000uF 35V [R-330AW] 1 AF
C3 RC-KZA087DRE0 Capacitor 0.1uF 50V [R-330AK] 1 AB
C3 RC-KZA087DRE0 Capacitor 0.1uF 50V [R-330AW] 1 AB
C4-5 VCEAB31VW106M Capacitor 10uF 35V [R-330AK] 2 AA
C4-5 VCEAB31VW106M Capacitor 10uF 35V [R-330AW] 2 AA
C5 VCEAB31VW106M Capacitor 10uF 35V [R-310AK] 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
Q1-2 VS2SB1238//-3 Transistor (2SB1238) [R-330AK] 2 AA
Q1-2 VS2SB1238//-3 Transistor (2SB1238) [R-330AW] 2 AA
Q2 VS2SA933S//-3 Transistor (2SA933) [R-310AK] 1 AB
Q3 VSKRC243M//-3 Transistor (KRC243M) 1 AB
R1 VRD-B12EF242J Resistor 2.4k ohm 1/4W [R-330AK] 1 AA
R1 VRD-B12EF242J Resistor 2.4k ohm 1/4W [R-330AW] 1 AA
R2 VRD-B12HF681J Resistor 680 ohm 1/2W [R-330AK] 1 AA
R2 VRD-B12HF681J Resistor 680 ohm 1/2W [R-330AW] 1 AA
R3 VRD-B12HF911J Resistor 910 ohm 1/2W [R-310AK] 1 AA
R3 VRD-B12HF511J Resistor 510 ohm 1/2W [R-330AK] 1 AB
R3 VRD-B12HF511J Resistor 510 ohm 1/2W [R-330AW] 1 AB
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
RY1 RRLY-A021DRE0 Relay (OJSH112LM-UL) [R-310AK] 1 AH
RY1 RRLY-A075DRE0 Relay (OJE-SS-124LM) [R-330AK] 1 AG
RY1 RRLY-A075DRE0 Relay (OJE-SS-124LM) [R-330AW] 1 AG
RY2 RRLY-A076DRE0 Relay (OMIF-S-124LM) [R-330AK] 1 AK
RY2 RRLY-A076DRE0 Relay (OMIF-S-124LM) [R-330AW] 1 AK
RY2 RRLY-A094DRE0 Relay (OMIF-S-112LM) [R-310AK] 1 AN
SP1 RALM-A014DRE0 Buzzer (PKM22EPT-THAI) 1 AG
T1 RTRNPA110DRE0 Transformer [R-310AK] 1 AN
T1 RTRNPA111DRE0 Transformer [R-330AK] 1 AP
T1 RTRNPA111DRE0 Transformer [R-330AW] 1 AP
VRS1 RH-VZA032DRE0 Varistor (10G471K) 1 AE
ZD1 VHEHZ161///-1 Zener diode (HZ16-1) [R-330AK] 1 AA
ZD1 VHEHZ161///-1 Zener diode (HZ16-1) [R-330AW] 1 AA
3- 2 DPWBFB611WRK0 CPU unit [R-310AK] 1 BA
3- 2 DPWBFB616WRK0 CPU unit [R-330AK] 1 BF
3- 2 DPWBFB616WRK0 CPU unit [R-330AW] 1 BF
3- 3 FPNLCB279WRK0 Control panel frame with key unit [R-330AW] 1 BC
3- 3 FPNLCB280WRK0 Control panel frame with key unit [R-330AK] 1 BC
3- 3 FPNLCB281WRK0 Control panel frame with key unit [R-310AK] 1 BC
3- 3- 1 FUNTKA793WRE0 Key unit [R-330AW] 1 AZ
3- 3- 1 FUNTKA794WRE0 Key unit [R-330AK] 1 AZ
3- 3- 1 FUNTKA795WRE0 Key unit [R-310AK] 1 AZ
3- 4 PSHEPA588WRE0 LED sheet 1 AM
3- 5 JBTN-B028WRF0 Open button [R-330AK] 1 AG
3- 5 JBTN-B029WRF0 Open button [R-330AW] 1 AG
3- 5 JBTN-B028WRF0 Open button [R-310AK] 1 AG
3- 6 MSPRCA050WRE0 Open button spring 1 AB
3- 7 XEPSD30P08XS0 Screw: 3mm x 8mm 4 AA

16

INFORMATION FOR PARTS CHANGING (R-310AK)

Interchangeability

OLD NEWA. OLD NEWB. OLD NEWC. OLD NEWD.

R-310AK
R-330AK
R-330AW

REF.NO.

1- 8
2- 4
2- 4
2- 5
3
4-19
4-20
4-21
5
5- 9
5-10
5-11
6- 2
6- 8
7- 3
7- 6

REPLACEMENT PART NO.

DESCRIPTION OLD No. Q'ty NEW No. Q'ty

Magnetron
Foot
Foot
Leg
Control Panel Parts
Cushion
MG. air guide
Cushion
Door assembly
Screw
Cushion
Screw
Turntble tray
Instruction book
Screw
Screw

RV-MZA197WRE0 1 RV-MZA271WRE0 1 A BL Jan./ 1997
GLEGPA006WRE0 1 GLEGPA023WRE0 1 A AB Dec./ 1996
GLEGPA023WRE0 1 GLEGPA019WRE0 1 C AD Aug./ 1997
GLEGPA067WRE0 2 GLEGPA067WRF0 2 A AE Mis-print

Refer to "PARTS LIST " on page 16 D Jan./ 1997

PCUSUA278WRP0 1 DELETE - D -- Jan./ 1997
PGGIDHA058WRP0 1 DELETE - D -- Jan./ 1997
PPACGA041WRE0 1 PCUSGA399WRE0 1 C AG Aug./ 1996
ADD - CDORFA754WRK0 1 A BH Jan./ 1997
XCPSD40P06000 2 XCPSD40P08000 1 C AA Jan./ 1997

ADD - PCUSUA481WRP0 1 C AB Aug./ 1996
ADD - XCPSD40P08WN2 1 C AC Jan./ 1997

NTNT-A079WRE0 1 NTNT-A084WRE0 1 A AR Jan./ 1997
TCADCA611WRR0 1 TCADCA630WRR0 1 C AF Jan./ 1997
XHTSD40P08RV0 4 XHTSD40P08RV0 3 D AA Jan./ 1997
XOTSD40P12000 12 XOTSD40P12000 14 C AA Aug./ 1996

INTER­CHANGE­ABILITY

CODE

EFFEC TIVE
FROM

17

R-310AK
R-330AK
R-330AW

1

2

OVEN AND CABINET PARTS FOR R-310AK

A

4-18

1-11

B

C

4-17

4-9

1-4

6-7

1-10

3

7-5

7-3

4-10

7-2

1-13

45

2-1

7-1

6-9

1-8

4-16

6

7-5

A

7-5

B

7-7

C

6-6

D

4-7

E

4-12

4-14

F

2-2

G

7-6

2-4

7-6

2-5

1-12

4-22

7-1

4-11

7-5

7-5

1-1

4-15

1-1

4-13

4-2

1-14

4-3

4-1

4-21

2-3

7-6

1-9

7-5

7-3

1-1

1-1

1-5

7-1

7-6

6-1

1-2

4-4

1-3

1-6

4-6

7-4

1-7

4-5

7-1

4-8

D

E

7-3

F

7-6

6-2

G

H

1

7-6

7-6

2

7-6

7-6

7-6

2-4

3

18

45

H

6

R-310AK
R-330AK
R-330AW

1

2

3

45

CONTROL PANEL, DOOR AND MISCELLANEEOUS PARTS FOR R-310AK

3-7

A

3-1F

3-4

3-2

3-7

3-3

B

3-7

C

3-3-1

5-5

3-1

5-8

6

A

B

C

3-5

D

5

E

5-3

F

G

3-6

5-10

5-4

5-1

5-7

5-11

5-2

D

5-9

E

F

5-6

G

H

Actual wire harness may be different from illustration.

1

6-3

2

(HIGH VOLTAGE TRANSFORMER)

6-4

6-5

3

19

(CAPACITOR)

45

H

6

R-310AK
R-330AK
R-330AW

INFORMATION FOR PARTS CHANGING (R-330AK/AW)

Interchangeability

OLD NEWA. OLD NEWB. OLD NEWC. OLD NEWD.

REPLACEMENT PART NO.

REF.NO.

1- 8
1-14
1-15 AH sensor assembly FDTCTA173WRK0 1 FDTCTA176WRK0 1 D AV Jan./ 1997
2- 1
2- 4
2- 4
2- 5
3
4-17
4-19
4-20
4-21
4-23
4-24
4-25
5
5
5- 9
5-10
5-11
6- 8
7- 2
7- 3
7- 5
7- 6

DESCRIPTION OLD No. Q'ty NEW No. Q'ty

Magnetron
Power transformer

Outer case cabinet (R330AW)
Foot
Foot
Leg
Control Panel Parts
Cushion
Cushion
MG. air guide
Cushion
Sensor mounting angle
Cushion
Cushion
Door assembly
Door assembly
Screw
Cushion
Screw
Instruction book
Screw
Screw
Screw
Screw

(R330AK) ADD - CDORFA753WRK0 1 A BH Jan./ 1997
(R330AW) ADD - CDORFA755WRK0 1 A BH Jan./ 1997

RV-MZA197WRE0 1 RV-MZA267WRE0 1 A BL Jan./ 1997
RTRN-A508WRE0 1 RTRN-A525WRE0 1 A BM Feb./ 1997

GCABUA584WRT0 1 GCABUA608WRP0 1 A BB Jan./ 1997
GLEGPA006WRE0 1 GLEGPA023WRE0 1 A AB Dec./ 1996
GLEGPA023WRE0 1 GLEGPA019WRE0 1 C AD Aug./ 1997
GLEGPA067WRE0 1 GLEGPA067WRF0 1 C AE Mis-print

Refer to "PARTS LIST " on page 16 D Jan./ 1997

PCUSUA235WRP0 1 DELETE - D -- Jan./ 1997
PCUSUA278WRP0 1 DELETE - D -- Jan./ 1997
PGIDHA058WRP0 1 DELETE - D -- Jan./ 1997
PPACGA041WRE0 1 PCUSGA399WRE0 1 C AG Jan./ 1997
PCOVPA254WRP0 1 LANGTA338WRP0 1 D AP Jan./ 1997

ADD - PCUSUA192WRP0 1 D AD Jan./ 1997
ADD - PCUSUA329WRP0 1 D AC Jan./ 1997

XCPSD40P06000 2 XCPSD40P08000 1 C AA Jan./ 1997
ADD 1 PCUSUA481WRP0 1 C AB Aug./ 1996
ADD 1 XCPSD40P08WN2 1 C AC Jan./ 1997

TCADCA610WRR0 1 TCADCA631WRR0 1 C AG Jan./ 1997
XFPSD30P06000 2 XFPSD30P06000 3 D AA Jan./ 1997
XHTSD40P08RV0 4 XHTSD40P08RV0 3 D AA Jan./ 1997
XOTSD40P12RV0 10 XOTSD40P12RV0 9 D AA Jan./ 1997
XOTSD40P12000 12 XOTSD40P12000 14 C AA Aug./ 1996

INTER­CHANGE­ABILITY

CODE

EFFEC TIVE
FROM

20