Dacor PCOR30B Service Manual Download Page 48

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PCOR30B

PCOR30R

PCOR30S

Figure S-2. Touch Control Panel Circuit

–

G12

G11

G10

G 9

G 8

G 1

G 2

G 3

G 4

G 5

G 6

G 7

Q20 KRA101M

Q90 KRA101M

VRS1

10G471K

C1 0.1µ/50v

D20

D21

D22

D23

D24

D25

D26

D27

D28

D32

D31

D65

D29

C2 1000µ/35v

C3 0.1µ/50v

0.1µ/50v

C10 0.1µ/50v

C74 330pF

C73 330pF

C72 330pF

C71 330pF

C70 330pF

C50

C60

C30

D30

DOOR
SWITCH

DAMPER
SWITCH

AC120V
60Hz

MOTOR RUN
CAPACITOR

TURNTABLE
MOTOR

DAMPER
MOTOR

CONVECTION
MOTOR

HOOD LAMP

COM

LOW

HIGH

COM

HOOD THERMO

HOOD MOTOR

OVEN LAMP

MICRO

CONVECTION
HERTER

FAN MOTOR

OVEN
THERMISTOR

AH SENSOR

(VP)

MIX CONV
DEFROST
SENSOR

ON OFF

COOK LBS OZ KG HELP

TURNTABLE

1, 2

31, 32

F
P1

IC2 IZA495DR

FLUORESCENT DISPLAY TUBE

KEY UNIT

HELP

GUIDE

KITCHEN

TIMER

TURNTABLE

ON / OFF

CLOCK

SLOW
COOK

POWER

LEVEL

KEEP

WARM

STOP

CLEAR

START

INSTANT ON

100°F

150°F

275°F

300°F

325°F

350°F

375°F

400°F

425°F

450°F

BROIL

SENSOR

REHEAT

EASY
MINUTE

CONVEC

SENSOR

COOK

AUTO

BROIL

AUTO

ROAST

FAN

LIGHT

AUTO

BAKE

POPCORN

PREHEAT

LOW MIX

BAKE

HIGH MIX

ROAST

AUTO

DEFROST

CONTROL UNIT

VREF

AN7

AN6

AN5

AN4

AN3

AN2

AN1

AN0

P55

P30

P31

P32

P33

P34

P35

P36

P37

P00

P01

P02

P03

P04

P05

P06

P07

P10

P11

P12

P13

P14

P15

P16

P17

P20

P21

P22

P23

P24

P25

P26

P27

P54

P53

P52

P51

P50

P47

P46

P45

P44

P43

P42

P40

P71

P70

XIN

XOUT

VSS

RST

INT1

VCC

VEE

AVSS

(A)

(B)

(C)

(B)

(C)

C4 10µ/35v

–

C12

10µ/35v

–

C65

100µ/16v

C20 10µ/35v

R30 15k

R50 15k

R63 220F

R64 3.9kF

R31 4.7k

R62 36kF

R51 4.7k

R65 1k

IC1 IX4175DR

C21 0.1µ/50v

ZD3 HZ5C2

R1 4.3k

1/2w

R2 1.5k

R7 4.7k

R40 3.3k

R70 3.3k

R91 100k

5 6 7 8 9 10 11 12 13 15 16 17 18 19 20

24 25 26 27 28 29

P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14

P15 P16

1G 2G 3G 4G 5G 6G 7G

R100 330 1w

R92 100k

R93 100k

R71 3.3k

R72 3.3k

R73 3.3k

R74 3.3k

R78 3.3k

R82 3.3k

R79

R80

R81

3.3k

R77 3.3k

R76 3.3k

D70

D71

D72

D73

D74

D75

D76

R8 4.7k

R75 100k

SP40

C11

R3 680 1w

R90 100k

NOTE

: IF NOT SPECIFIEED, 1/4w ± 5%

: IF NOT SPECIFIEED, 1SS270A

: IF NOT SPECIFIEED, 0.01µF/16v

R4 510 1/2w

Q1 2SB1238

ZD1

HZ6A3

ZD2

HZ16-1

ZD4 HZ4A2

3 D1

D1-D4 : 11ES1

C100

RY4

RY5

RY6

RY7

RY8

RY9

RY10

RY1

RY2

RY3

(J1)

(J2)

(J4)

(J6)

(J3)

(J5)

(J7)

Q21 KRA101M

Q22 KRA101M

Q23 KRA101M

Q24 KRA101M

Q26 KRA101M

Q28 KRA101M

Q27

KRC243M

Q30

KRA101M

Q60

KRC102M

KRA101M

DTA123ES

Q40

KRA101M

CF1 4MHz

Q29 KRA101M

Q25 KRA101M

COM

(J8)

4.7k

20k

Summary of Contents for PCOR30B

Page 1: ...AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY INSIDE FRONT COVER BEFORESERVICING INSIDE FRONT COVER WARNING TO SERVICE PERSONNEL 1 MICROWAVEMEASUREMENTPROCEDURE 2 FOREW...

Page 2: ...operative unit perform a microwave emission check as per the Microwave Measure ment Procedure outlined in this service manual If microwave emissions level is in excess of the specified limit contact D...

Page 3: ...1 PCOR30B PCOR30R PCOR30S NOTES...

Page 4: ...in the center of the 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 su...

Page 5: ...tely 4 SetthecookingcontrolonFullPowerCookingMode Closethedoorandselectacookcycleofseveralminutes Ifthewater begins to boil before the survey is completed replace it with 275 ml of cool water C Leakag...

Page 6: ...high voltage capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 6 After...

Page 7: ...radiationhazard 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...

Page 8: ...P 20 approx 20 of Full Power P 10 approx 10 of Full Powe P 0 No power throughout the cooking time CUSTOM HELP pad SENSOR COOK pad COMPU BROIL pad COMPU ROAST pad COMPU BAKE pad SENSOR REHEAT pad MINU...

Page 9: ...ely closed 7 One touch door open button Push to open door 8 FAN HI LO button Push for High Low Off 9 Light button Push for On Off 10 Auto Touch control panel 11 Time display Digital display 99 minutes...

Page 10: ...nergized and the digital read outdisplaysthetimestillremaininginthecookcycle when the door was opened 7 Themonitorswitchiselectricallymonitoringtheoperation of the secondary and third door door switch...

Page 11: ...s energized turning on the damper motor The damper is returned to the open position closing the damper switch contacts which send a signal to the control unit de energizing shut off relay RY6 AUTOMATI...

Page 12: ...ted automatically according to the weight of the food 3 The shut off relays RY1 RY4 RY5 and RY7 are energized turning on the oven lamp turntable motor cooling fan motor and convection motor The power...

Page 13: ...des ofthebasecover upthroughtherightandleftsideintake ducts then discharged vertically at rear center top of the oven into the customer s vent system 2 HORIZONTALVENTING The air handing is same as VER...

Page 14: ...BLK BLK ORG ORG ORG BLK BRN WHT BRN PPL GRY B7 B1 B3 B5 A5 ORG BLU WHT PPL COM RY1 N O RY2 AH SENSOR WHT WHT RY3 RY2 CONTROL UNIT STM GRY THIRD DOOR SWITCH 120VAC 60Hz BLK WHT GRN GND NOISE FILTER NOI...

Page 15: ...LAMP ORG OL CM FM TTM DM CONVE CTION MOTOR SECONDARY INTERLOCK SWITCH TURN TABLE MOTOR ORG WHT ORG BLK BLK ORG ORG ORG BLK BRN WHT BRN PPL GRY B7 B1 B3 B5 A5 ORG BLU WHT PPL COM RY1 N O RY2 AH SENSOR...

Page 16: ...RELAY SECONDARYSWITCH DOORSENS ING SWITCH MONITOR SWITCH AND PRI MARY SWITCH FOR PROPER OPERATION REFERTOCHAPTER TESTPROCEDURE NOTE MONITOR FUSE PRIMARY SWITCH AND MONITOR SWITCH ARE REPLACED AS AN A...

Page 17: ...lement is de energized and the convection fan stops operating and the oven shuts off DAMPEROPEN CLOSEMECHANISM Usually the damper is in the open position except during convection cooking Damper positi...

Page 18: ...FS BA018 KIT as an assembly IMPORTANT Whenever troubleshooting is performed with the power supply cord disconnected It may in some cases be necessary to connect the power supply cord after the outer c...

Page 19: ...motor should be operating at low speed Hood lights do not turn on with pushed HOOD LAMP button Hood fan motor does not rotate at all with pushed FAN button Speed of the hood fan motor does not change...

Page 20: ...CTIONMOTOR HOOD LAMP OR SOCKET HOODMOTORCAPACITOR SHORTED OR OPENED WIRING SHORTEDINPOWERCORD NO POWER AT OUTLET LOWVOLTAGE NOISE FILTER M N O P Q R S S S S S S S S S S U V RE RE RE RE CK CK RE CK RE...

Page 21: ...temperature of the water 2 Place the cup of water in the oven Operate oven at POWER 10 HIGH selecting more than 60 seconds cook time Allow the water to heat for 60 seconds measuring with a stop watch...

Page 22: ...removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions D HIGH VOLTAGE CAPA...

Page 23: ...the front plate of the oven cavity with the door opened in this condition the plunger of the monitor switch is pushed in the meter should indicate an open circuit If improper operation is indicated th...

Page 24: ...closed circuit If the temperature of the magnetron reaches approximately 302O F 150O C the temperature fuse opens An open temperature fuse indicates overheating of the magnetron Check for restricted...

Page 25: ...ptacle and 120 volts A C is supplied to the damper motor themotoroperatesuntilthedamperisopenedandthedamperswitchcloses Thenthedamper motor stops operation 5 If the damper motor does not operate check...

Page 26: ...to two units LSI Unit and Power Unit and troubleshooting by unit replacement is described according to the symptoms indicated Before testing 1 Disconnect the power supply cord and then remove outer ca...

Page 27: ...r and block it open 3 Discharge high voltage capacitor 4 If the display fails to clear when the STOP CLEAR pad is depressed first verify the flat ribbon is making good contact verify that the door sen...

Page 28: ...x 24 0V D C Power transformer Stirrer mootor RY3 Approx 24 0V D C Heatingelement RY4 Approx 24 0V D C Turntablemotor RY5 Approx 24 0V D C Fan motor RY6 Approx 24 0V D C Dampermotor RY7 Approx 24 0V D...

Page 29: ...y assembled before following procedure 1 The oven should be plugged in at least five minutes before sensor cooking 2 Room temperature should not exceed 95O F 35O C 3 The unit should not be installed i...

Page 30: ...ely 200 milliliters 7 2 oz of tap water in a 1000 milliliter measuring cup 9 2 Place the container on the center of tray in the oven cavity 9 3 Close the door 9 4 Touch SENSOR COOK pad And touch the n...

Page 31: ...GPOINT INDICATION OF OHM METER Between N and H Open Circuit Between terminal N and GRY Short Circuit Between terminal H and RED Short Circuit If incorrect readings are obtained replace the noise filte...

Page 32: ...lement is a Fluorescent Display Basically a Fluorescent Display is triode having a cath ode a grid and an anode Usually the cathode of a Fluorescent Display is directly heated and the filament serves...

Page 33: ...f G8 line keys on key matrix is touched a corresponding signal will from P00 P06 will be input into AN1 When no key is touched the signal is held at L level 12 AN0 IN Temperaturemeasurementinput OVENT...

Page 34: ...s the basic timing for all real time processing of LSI 26 P40 IN Connected to VC 27 RST IN Auto clear terminal Signal is input to reset the LSI to the initial state when power is applied Temporarily s...

Page 35: ...lly one pulse is outputineverysynchronizedsignal period andinput to the grid of the fluorescent display 41 44 P17 P14 OUT Digit selection signal Signal similar to P23 45 48 P13 P10 OUT Segment data si...

Page 36: ...ntrol sensor cooking of the unit When the unit is set in the sensor cooking mode a 16 seconds clearing cycle occurs Thenthedetectorcircuitstartstofunctionandthe LSI observes the initial voltage availa...

Page 37: ...ls the power supply cord between the touchcontrolpanelandtheovenproperislongenoughthat theymaybeseparatedfromeachother Forthosemodels therefore it is possible to check and repair the controls of theto...

Page 38: ...or is bent or warped 5 There are defective parts in the door interlock system 6 There are defective parts in the microwave generating and transmission assembly 7 There is visible damage to the oven Do...

Page 39: ...y cord together with the outer case 8 Discharge high voltage capacitor CAUTION 1 DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE 2 DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY...

Page 40: ...tercase removetheunitmountingscrew and hood intake duct R Refer to procedure of Removal of Oven from Wall Outer case Removal and Unit Mounting Screw and Hood Intake Duct R Removal 2 Open the door bloc...

Page 41: ...supplycord removetheovenfrom wall and remove outer case remove the unit mounting screw and hood intake duct R Refer to procedure of RemovalofOvenfromWall OutercaseRemoval and UnitMountingScrewandHoodI...

Page 42: ...rrerfannottocomeoutfromtheshaftofstirrer motor 3 Insert the cutout of stirrer cover to the tabs on the ceiling 4 Put the stirrer fan on the stirrer cover to match the stirrer fan shaft to the center o...

Page 43: ...dforwardauntilbbreaksasshowninstep 1 2 To remove the middle section push both sides of the middle section towards d until c breaks as shown in step 2 NOTE Discard the middle section 3 Afterremovingthe...

Page 44: ...tion motor shaft 24 Remove the E ring from the convection motor shaft 25 Remove two 2 screws holding the convection motor to convection motor mounting plate 26 Now the convection motor is free CONVECT...

Page 45: ...d door with an approved microwave survey meter Refer to Microwave Measurement Procedure DOORASSEMBLYREMOVAL 1 Unplug the oven from power outlet and remove the oven from wall and remove outer case Refe...

Page 46: ...re of RemovalofOvenfromWall and OutercaseRemoval 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Remove the hood exhaust louver from the oven cavity by pushingtherightandlefttab...

Page 47: ...BLK BLK BLU SECONDARY INTERLOCK SWITCH N O N C COM COM MONITOR SWITCH MONITOR FUSE AND FUSE HOLDER N O N O COM COM GRN GRN PNK N O COM DOOR SENSING SWITCH CN C CN E CN F CN A RY3 RY1 RY9 RY7 CN F T1 1...

Page 48: ...OST CONTROL UNIT 1 VREF AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0 P55 P30 P31 P32 P33 P34 P35 P36 P37 P00 P01 P02 P03 P04 P05 P06 P07 P10 P11 P12 P13 P14 P15 P16 P17 P20 P21 P22 P23 P24 P25 P26 P27 P54 P53 P52...

Page 49: ...0 42 CF1 ZD4 D30 D32 OVEN LAMP AC H ZD3 RY3 RY2 RY1 P S1 S2 RY9 RY10 RY8 IC2 IC1 BFB 29 30 31 32 33 2 27 15 43 38 C10 C2 Q90 16 R91 D31 R92 R93 50 R75 J6 J3 Q28 CONV H MICRO Q29 Q27 Q23 ZD2 Q20 D26 D2...

Page 50: ...RIGHTS RESERVED Nopartofthispublicationmaybereproduced stored in retrieval systems or transmitted in any form or by any means electronic me chanical photocopying recording or other wise without prior...

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