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7

R-318BK

4. 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 connecter). 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.

5. Reconnect all leads removed from

components during testing.

6. Re-install the outer case (cabinet).
7. Reconnect the power supply cord after

the outer case is installed.

8. Run the oven and check all functions.

5

4

3

2

1

0

9

8

7

6

STOP

CLEAR

AUTO

START
CLOCK

Chicken

breast

KITCHEN

TIMER

Fresh

Vegetables

Fish /

seafood

Ground meat

Ground meat

COMPU

DEFROST

Chicken

pieces

Popcorn 

Reheat 

START

POWER

LEVEL

MINUTE

PLUS

Fresh

roll /

muffin

Frozen

roll /

muffin

Frozen

entrees

Baked
potato

Steaks /

chops

INSTANT

ACTION

G 8

G 9

G10

G11

G12

G 7

G 6

G 5

G 4

G 3

G 2

G 1

6

4

5

1

2

3

6

4

5

1

2

3

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

H

Figure S-2. Power Unit Circuit

+

–

+

–

+

–

A 1

A 2

C 1

C 2

C 3

C 4

C 5

C 6

C 7

C 8

C 9

SH-B

SH-A

T1

AC

AC

AC

MICRO

VA

GND

VC

INT

BUZZER

MICRO 

DOOR
SWITCH 

NOTE

: IF NOT SPECIFIED,  1/4w 

±

 5%

: IF NOT SPECIFIED,  1SS270A

TURNTABLE
MOTOR
OVEN LAMP
FAN
MOTOR

TURNTABLE
MOTOR
OVEN LAMP
FAN
MOTOR

WH-1

R4 27

R5 4.7k

R2 680 1/2w

R6 3.3k

SP1

VRS1

C1 0.1

µ

/50v

C3 0.1

µ

/50v

ZD1

HZ16-1

C4 10

µ

/35v

C5
10

µ

/35v

R3 510

1/2w

C2 1000

µ

/35v

R1 2.4k

(J1)

D5

D3

D4

D2

D1

a

c

d

b

D6

RY1

D7

D8

RY2 

Q2 2SB1238

2SB1238

Q1

D1-D4
11ES1

Q3 DTD143ES 

V

R

V

R

V

R

V

A

LD1-LD5

LD1 LD2 LD3 LD4 LD5

N.O.

N.O.

COM

COM

1

4

3 

6  

Summary of Contents for R-318BK

Page 1: ...rent contact with following parts may result in a severe possibly fatal electrical shock High Voltage Capacitor High Voltage Power Transformer Magnetron High Voltage Rectifier Assembly High Voltage Harness etc SHARP CORPORATION This document has been published to be used for after sales service only The contents are subject to change without notice SUPPLEMENTAL SERVICE MANUAL This is a supplementa...

Page 2: ...nd 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...

Page 3: ...pacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconne...

Page 4: ...e oven cavity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive 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 Set the cooking control on Full Power Cooking Mo...

Page 5: ...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 no other visible damage with the oven Servicing and repair work must be carried out only by trained service personnel DANGER Certaininitialpartsareintentionallynotgroundedandpresentariskofelectric...

Page 6: ...n Rate P HI Full power throughout the cooking time P 90 approx 90 of Full Power P 80 approx 80 of Full Power P 70 approx 70 of Full Power P 60 approx 60 of Full Power P 50 approx 50 of Full Power P 40 approx 40 of Full Power P 30 approx 30 of Full Power P 20 approx 20 of Full Power P 10 approx 10 of Full Power P 0 No power throughout the cooking time SENSOR COOK pads INSTANT ACTION pads COMPU DEFR...

Page 7: ... TOUCH PAD AGAIN POWER LEVEL START STOP CLEAR Figure O 1 Oven Schematic Off Condition SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 CLOCK APPEARS ON DISPLAY 120V AC 60 Hz OVEN LAMP TURN TABLE MOTOR FAN MOTOR POWER TRANSFORMER CAPACITOR 1 0µF AC 2300V MONITOR SWITCH RECTIFIER MAGNETRON SECONDARY INTERLOCK SWITCH TTM OL FM MONITOR FUSE 20A A1 A2 COM COM N O N O DOOR SENSING SWITCH RY 1 RY 2 CONTR...

Page 8: ...supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconnect the leads to the primary of the power transformer 5 Reinstall the outer case cabinet 6 Reconnect the power supply cord after the outer case is installed 7 Run the oven and check all functions H BLOWN MONITOR FUSE TE...

Page 9: ... unit or key pad is at fault 5 Reconnect all leads removed from components during testing 6 Re install the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions 5 4 3 2 1 0 9 8 7 6 STOP CLEAR AUTO START CLOCK Chicken breast KITCHEN TIMER Fresh Vegetables Fish seafood Ground meat Ground meat COMPU DEFROST Chicken pieces Popcorn...

Page 10: ...4 45 46 47 1 VL2 2 VL1 3 AN7 4 AN6 5 AN5 6 AN4 7 AN3 8 AN2 9 AN1 10 AN0 11 P57 12 P56 13 P55 14 P54 15 P53 16 P52 17 P51 18 P50 19 P47 20 P46 21 P45 22 P44 23 P43 24 26 P40 25 P41 VL3 VCC G12 C 2 C 3 C 4 C 5 C 6 C 7 C 8 C 9 VA GND VC INT BUZZER RY1 RY2 NOTE IF NOT SPECIFIED 1 10w 5 DOOR SWITCH G11 G10 G 9 G 8 G 7 G 6 G 5 G 4 G 3 G 2 G 1 IF NOT SPECIFIED 1SS355 IF NOT SPECIFIED 0 01µF 25v C10 47µ 1...

Page 11: ... Power Unit WH 1 WH 1 SH B SH A LD1 DIP LD2 1 C3 C4 C5 R3 C2 F C1 10 D4 D2 D1 D3 D9 D10 RY3 CN D D8 ZD1 VRB D U R2 R1 R6 R5 SP1 3 E B D6 D5 Q2 R4 2 6 11 P S RY2 T1 AC VRS1 QKITPB026MRE0 5 D7 OMIF D U 9 8 7 E Q1 B 4 E RY1 AC OL TTM FM B Q3 CN C CN C CN B CN A LD3 LD4 LD5 1 1 1 9 12 2 1 1 1 2 XA VH 2 2 ...

Page 12: ...pin connector CN A 1 AC 3 1B QCNCMA422DRE0 9 pin connector CN C 1 AF 3 1C FW VZA196DRE0 2P wire harness WH 1 1 AD 3 1D FW VZA195DRE0 Switch harness A SH A 1 AD 3 1E FW VZA197DRE0 Switch harness B SH B 1 AD 3 1F LHLD A171WRF0 LED holder 1 AE C1 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AA C2 VCEAB31VW108M Capacitor 1000 uF 35V 1 AF C3 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AA C4 5 VCEAB31VW106M Capacitor ...

Page 13: ...20 PCUSUA192WRP0 Cushion 1 AD 4 21 PCUSUA329WRP0 Cushion 1 AC 4 22 PGIDHA058WRP0 MG air guide 1 AE 4 23 PCUSUA126WRE0 Cushion 1 AC DOOR PARTS 5 1 FDORFA318WRT0 Door panel 1 BE 5 2 PSHEPA382WRE0 Sealer film 1 AH 5 3 GWAKPA547WRR0 Door frame 1 AZ 5 4 HPNL A684WRR0 Door screen 1 AT 5 5 LSTPPA139WRF0 Latch head 1 AF 5 6 MSPRTA187WRE0 Latch spring 1 AC 5 7 PCUSUA504WRP0 Cushion 5 AB 5 8 XCPSD40P08000 S...

Page 14: ... 1 4 1 7 2 4 16 7 6 7 3 6 2 4 23 7 3 7 6 1 1 1 1 1 2 4 8 1 7 4 4 7 5 7 5 4 3 7 5 6 1 7 1 1 9 4 6 1 8 6 6 1 4 4 7 6 7 7 5 1 5 4 12 4 14 1 12 7 1 4 2 4 15 1 14 4 13 1 5 2 3 4 5 1 3 7 1 1 6 7 1 7 6 7 6 7 6 7 6 7 6 2 5 2 4 7 6 7 6 2 4 7 6 2 2 4 11 4 9 4 22 7 3 1 13 7 4 7 2 4 10 6 9 1 11 1 10 4 19 4 20 4 21 4 17 1 15 7 2 ...

Page 15: ...F G H A B C D E F G H CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS Actual wire harness may be different from illustration 6 4 6 3 CAPACITOR 6 5 3 2 3 4 3 3 3 3 3 3 5 3 5 3 5 3 1F 3 1 3 3 1 3 3 2 5 2 5 8 5 1 5 3 5 6 5 4 5 9 5 5 4 18 5 7 5 7 5 7 5 7 ...

Page 16: ...g or otherwise without prior written per mission of the publisher 6 4 5 1 2 3 6 4 5 1 2 3 A B C D E F G H A B C D E F G H PACKING AND ACCESSORIES DOOR PROTECTION SHEET SPADPA204WRE0 TOP PAD ASSEMBLY FPADBA341WRK0 PLASTIC BAG SSAKHA034WRE0 Not replaceable items PACKING CASE SPAKCD175WRE0 BOTTOM PAD ASSEMBLY FPADBA342WRK0 6 2 TURNTABLE TRAY 6 8 INSTRUCTION BOOK PRINTING MATTER 6 1 TURNTABLE SUPPORT ...

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