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FMV156EMC

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

7. After that procedure, re-connect the power supply cord.
8. check voltage between normal open terminal of the relay RY and the normal open terminal of the

relay RY1 on the control unit with an A.c. voltmeter.

  the meter should indicate 10 volts, if not check oven circuit.
RY1, RY, RY4, and RY5 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 unit is defective.

RElAY SYMBol

oPERAtIoNAl VoltAGE

coNNEctED coMPoNENtS

RY1

Approx. 6.6V D.c.

oven lamp / Fan motor / turntable motor

RY(cooK)

Approx. 6.0V D.c.

Power transformer

RY4

Approx. 6.6V D.c.

Hood motor

RY5

Approx. 6.6V D.c.

Hood lamp

9. Disconnect the power supply cord.
10. open the door and block it open.
11. to discharge high voltage capacitor, wait for 60 seconds.
1. Reconnect all leads removed from components during testing.
13. Re-install the hood intake duct R.
14. Re-install the outer case (cabinet).
15. Reconnect the power supply cord after the outer case is installed.
16. Run the oven and check all functions.

O

DEFROST CENTER TEST

(1)  open the door.
()  Place one cup of water in the center of the turntable tray in the oven cavity.
(3)  close the door.
(4)  touch the " DEFRoSt" pad once.
(5)  touch the number pad "".
(6)  touch the number pad "5".
(7)  touch the " StARt " button.
(8)  the oven is in Defrost center cooking condition.
(9)  the oven will operate as follows.

Menu

1St StAGE

ND StAGE

Steaks/chops

lEVEl

tIME

lEVEl

tIME

0.5lbs

60%

57sec.

40%

17sec.

(8) If improper operation is indicated, the control unit is probably defective and should be checked.

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.
1. Foil pattern check and repairs.

1)  Disconnect the power supply cord.
)  open the door and block it open.
3)  to discharge high voltage capacitor, wait for 60 seconds.
4)  Remove the control unit, referring to the procedure of " coNtRol PANEl ASSEMBlY, coNtRol

UNIt AND KEY UNIt REMoVAl ".

5) Follow the troubleshooting guide given below for repair.

P

FOIL PATTERN ON THE PRINTED WIRING BOARD TEST

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Содержание FMV156EMC

Страница 1: ...IVE MIcRoWAVE ENERGY INSIDE FRoNt coVER BEFoRE SERVIcING INSIDE FRoNt coVER WARNING to SERVIcE PERSoNNEl 3 MIcRoWAVE MEASUREMENt PRocEDURE 4 FoREWoRD AND WARNING 5 PRoDUct SPEcIFIcAtIoNS 6 GENERAl INFoRMAtIoN 6 oPERAtIoN 9 tRoUBlESHootING GUIDE 13 tESt PRocEDURE 15 toUcH coNtRol PANEl ASSEMBlY 5 coMPoNENt REPlAcEMENt AND ADJUStMENt PRocEDURE 9 PIctoRIAl DIAGRAM 37 PoWER UNIt cIRcUIt 38 lSI UNIt cI...

Страница 2: ...on 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 RD8100U BEFORE SERVICING Before servicing an operative unit perform a microwave emission check as per t...

Страница 3: ... 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 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 Re...

Страница 4: ... at 20 5 C 68 F 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 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 cooki...

Страница 5: ...oid electrical shock and microwave radiation hazard 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 perso...

Страница 6: ...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 Popcorn pad Reheat pad Cook pad Defrost pad Number selection pads Power Level pad Timer Clock pad Light button Fan button Clear Off button START Plus 1 Min button Oven Cavity Light 20W x 1 Incandescent light bulb Safety Standard UL Listed FCC Authorized DHHS Rules C...

Страница 7: ...eptacle should be located inside the cabinet directly above the Microwave Oven Hood system mounting location 1 Oven door with see through window 2 Door hinges 3 Waveguide cover 4 Turntable motor shaft 5 Oven lamp It will light when oven is operating or door is open 6 Door latches The oven will not operate unless the door is securely closed 7 Auto Touch control panel 8 Time display Digital display ...

Страница 8: ...ne touch cooking features such as Plus 1 Min are disabled after three minutes when the oven is not used These features are automatically enabled when the door is opened and closed or Clear Off button is pressed CONTROL PANEL ...

Страница 9: ...otor the cooling fan motor the turntable motor and the high voltage components are de energized and the digital read out displays the time still remaining in the cook cycle when the door was opened 7 The monitor switch is electrically monitoring the of the primary interlock switch and door sensing switch is mechanically associated with the door so that it will function in the following sequence 1 ...

Страница 10: ...VERTICAL VENTING except that the final air discharge is directed horizontally out from the top rear of the oven into the customer s vent system 3 RE CIRCULATION INSIDE VENTING The air handing is the same as VERTICAL VENTING except that the final air discharge is directed horizontally through the upper front of the oven into the kitchen IN this case the accessory charcoal filter RK 240 must be prov...

Страница 11: ...ER WHT N C WHT BLU WHT HUMIDITY C3 COM N O PPL WHT RED BLU NOISE SUPRESSION COIL RESISTOR 470 kW 1 2W LINE CROSS CAPACITOR 1 0 uF 275V LINE BYPASS CAPACITOR 0 0033 uF 250V FUSE 20A LINE BYPASS CAPACITOR 0 0033 uF 250V NOISE FILTER N L GND NOTES 1 CIRCUITS SUBJECT TO CHANGE WITHOUT NOTICE 2 TERMINAL WITH PROJECTION OR OPPOSITE BLUE MARK ON LAMP SOCKET MUST BE CONNECTED TO NEUTRAL WIRE 3 ONLY CERTAI...

Страница 12: ...The turntable motor rotates the turntable located on the bottom of the oven cavity so that the foods on the turnta ble cook evenly during cooking Turntable will turn in either direction The turntable motor can be turned off by touching TURNTABLE ON OFF pad COOLING FAN MOTOR The cooling fan motor drives a blade which draws external cool air This cool air is directed through the air vanes sur roundi...

Страница 13: ...laced Use part FFS BA016 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 case has been removed in this event 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 Disconnect the l...

Страница 14: ... motor operate Turntable motor does not operate Oven lamp lights and fan motor operate Oven does not go into cook cycle when START pad is touched Oven seems to be operating but little or no heat is produced in oven load Food incompletely cooked or not cooked at all at end of cook cycle Oven goes into a cook cycle but extremely uneven heating is produced in oven load food Variable cooking does not ...

Страница 15: ...til the temperature stabilizes Record the 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 second hand of a watch or the digital read out countdown 3 Remove the cup from the oven and again measure the temperature making sure to stir the thermometer ...

Страница 16: ...ced 5 Reconnect all leads 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 NOTE Be sure to use an ohmmeter that will supply a forward bias voltage of more than 6 3 volts HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL SO DO NOT ATTEMPT TO MEASURE THE FILAMENT A...

Страница 17: ... TEMPERATURE REPLACE TEMPERATURE FUSE G PRIMARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCH 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 Isolate the switch and connect the ohmmeter to the common COM and normally open NO terminal of the switch The meter should indicate an open circuit with the door open and a clos...

Страница 18: ...ondary interlock switch and the primary interlock relay are operating properly according to the above Switch Test Procedure Disconnect the wire lead from the monitor switch COM terminal Check the monitor switch operation by using the ohmmeter as follows When the door is open the meter should indicate a closed circuit When the monitor switch actuator is pushed by a screw driver through the lower la...

Страница 19: ...nect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 If the motor does not turn touch the FAN button once and check voltage between pins 1 and 2 Blue and Black wires of the 6 pin connector If 120 Volts appear and the hood capacitor is good replace the hood fan assembly If 120 Volts does not appear check the motor circuit The r...

Страница 20: ... supply cord after the outer case is installed 6 Run the oven and check all functions The following symptoms indicate a defective 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 If the key unit is defective 1 Disconnect the power supply cord and then ...

Страница 21: ...r 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 CLEAR OFF 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 th...

Страница 22: ...mponents during testing 13 Re install the hood intake duct R 14 Re install the outer case cabinet 15 Reconnect the power supply cord after the outer case is installed 16 Run the oven and check all functions O DEFROST CENTER TEST 1 Open the door 2 Place one cup of water in the center of the turntable tray in the oven cavity 3 Close the door 4 Touch the DEFROST pad once 5 Touch the number pad 2 6 To...

Страница 23: ...UVER REMOVAL REMOVAL OF OVEN FROM WALL and OUTER CASE REMOVAL 2 Open the door and block it open 3 To discharge high voltage capacitor wait for 60 seconds 4 Remove the hood intake duct R 5 Disconnect the leads to the primary of the power transformer 6 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 7 After that procedure re connect the power s...

Страница 24: ...INT INDICATION OF OHM METER Between N and H Open Circuit Between terminal N and LOAD Short Circuit Between terminal H and LOAD Short Circuit If incorrect readings are obtained replace the noise filter 6 Reconnect all leads removed from components during testing 7 Re install the outer case cabinet 8 Reconnect the power supply cord after the outer case is installed 9 Run the oven and check all funct...

Страница 25: ... hood motor and light the oven lamp and hood lamp 8 Indicator Circuit This circuit consists of 22 segments and 3 common electrodes using a Light Crystal Display 9 Back Light Circuit A circuit to drive the back light Light emitting diodes LD1 LD4 The touch control section consists of the following units as shown in the touch control panel circuit 1 Key Unit 2 Control Unit The Control unit consists ...

Страница 26: ...x is touched a corresponding signal out of P20 P21 P22 P25 and P26 will be input into P46 When no key is touched the signal is held at H level 21 P45 IN Signal similar to P46 When either G11 line on key matrix is touched a corresponding signal will be input into P45 22 P44 IN Signal similar to P46 When either G10 line on key matrix is touched a corresponding signal will be input into P44 23 P43 IN...

Страница 27: ...lamp OFF 43 P15 OUT Terminal not used 44 P14 OUT Hood motor driving signal To turn on and off relay RY4 L level During Hood motor ON H level During Hood motor OFF 45 47 P13 P11 OUT Terminal not used 48 50 SEG24 SEG22 OUT Terminal not used 51 72 SEG21 SEG0 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 S...

Страница 28: ...touch control panel and the oven itself is so short that the two can t be separated For those models check and repair all the controls sensor related ones included of the touch control panel while keeping it connected to the oven B On some models the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other For those models it i...

Страница 29: ...lowing conditions exist 1 Door does not close firmly 2 Door hinge support or latch hook is damaged 3 The door gasket or seal is damaged 4 The door 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 not operate the oven 1 Without the RF gasket Magnetron ...

Страница 30: ... supply before removing outer case 2 Discharge the high voltage capacitor before touching any oven components or wiring POWER TRANSFORMER REMOVAL 1 Disconnect the power supply cord remove the oven from wall and remove outer case Refer to procedure of Removal of Oven from Wall and Outer Case Removal And proceed as follows 2 Open the door and block it open 3 To discharge the high voltage capacitor w...

Страница 31: ...n duct And remove the hood intake duct R 5 Disconnect the high voltage wire lead with high voltage rectifier from the magnetron 6 Disconnect filament lead of the transformer from high voltage capacitor 7 Disconnect high voltage wire A from capacitor HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL 8 Remove the fan duct assembly from the oven cavity referring to the procedure of Cooling fa...

Страница 32: ...acket by touching with the pliers COOLING FAN MOTOR REMOVAL 15 Remove the fan blade from the shaft of the fan motor by pulling and rotating the fan blade with your hand 16 Now the fan blade will be free CAUTION Do not reuse the removed fan blade because the hole for shaft may be larger than normal 17 Remove the two 2 screws holding the fan motor to the fan duct 18 Now the fan motor is free INSTALL...

Страница 33: ...oven lamp off from the lamp socket 7 Now the oven lamp is free 8 Pull the wire leads from the oven lamp socket by pushing OVEN LAMP and Lamp Socket REMOVAL POSITIVE LOCK CONNECTOR NO CASE TYPE REMOVAL 1 Disconnect the power supply cord and remove the oven from wall and remove outer case Refer to procedure of Removal of Oven from Wall and Outer case Removal 2 Open the door and block it open 3 To di...

Страница 34: ... Remove each switch from the latch hook by pushing the one 1 stopper tab holding each switch 10 Now each switch is free Re install 1 Re install each switch in its place The primary interlock switch is in the lower position door sensing switch is in the upper position and the monitor switch is in the middle position 2 Re connect wire leads to each switch Refer to pictorial diagram 3 Secure the latc...

Страница 35: ... Make sure upper and lower oven hinges are inserted into the upper an lower door hinge pins 5 Make sure the door is parallel with oven face lines left and upper side lines and door latch heads pass through latch holes correctly 6 Re install the door stopper to the door assembly 7 Re install the hood exhaust louver to the oven cavity front face plate with the three 3 screws Note After any service t...

Страница 36: ...e cover and door stopper and between the choke cover and the door frame as shown Figure C 3 to free engaging parts 9 Pry the choke cover by inserting a putty knife in order shown in Figure C 3 10 Now choke cover is free from door panel and door frame NOTE When carrying out any repair to the door do not bend or warp the slit choke tabs on the door panel assembly to prevent microwave leakage DOOR DI...

Страница 37: ...TOR 1 2 3 4 5 6 RED YLW BLU BLK RED YLW BLU BLK 1 2 RED GRN 1 2 3 4 5 6 7 YLW BLK PPL RED CN A HOOD FAN THERMAL CUT OUT RED GRY WHT GRY GRN to Right Base Plate RED RED RED BLK RED COM COM N O N O RY1 RY2 T1 1 2 POWER UNIT CN B RED 9 BRN 8 1 2 3 4 5 RED CN C WHT RED ORG ORG GRN GRN WHT GRY RED WHT RED WHT NOISE FILTER BOARD N H BLU PINK or ORG or WHT RED RED BRN PINK or ORG or PPL ORG BRN ORG BRN M...

Страница 38: ...38 FMV156EMC 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 ...

Страница 39: ...39 FMV156EMC 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 3 LSI Unit Circuit H ...

Страница 40: ...40 FMV156EMC 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 4 Printed Wiring Board ...

Страница 41: ...CONTROL PANEL PARTS 23 CPWBFB100MRU0 Control unit 1 24 FPNLCB513MRK0 Control panel sub assembly 1 25 FUNTKB418 KIT Key unit 1 26 LANGQB061MRP0 Key fixing plate 1 27 XEPS730P10XS0 Screw 1 28 XEPS730P08XS0 Screw 4 OVEN PARTS 29 LSTPPB038MRF0 Door stopper 1 30 FROLPB025MRK0 Turntable support assembly 1 31 NTNT A108WREZ Turntable tray 1 32 LBNDKB009MRP0 Capacitor holder 1 33 PDUC B111MRF0A Magnetron d...

Страница 42: ...2 69 TINSEB445MRR2 Operation manual 1 70 TINSKB108MRR0 Top template 1 71 See note 1 High voltage wire A 1 72 FW VZB287MRE0 Main harness 1 73 TCAUAB055MRR0 DHHS service caution label 2 74 TCAUAB050MRR0 Monitor caution label 1 75 TCAUAB048MRR0 Revised DHHS GRD C label 1 76 PFIL B016MRE0 Charcol filter 1 77 PFIL B002MRE0 Grease filter 2 78 FFTA B005MRK0 Exhaust damper assembly 1 SCREWS NUTS WASHERS A...

Страница 43: ...F G H OVEN AND CABINET PARTS 81 38 20 45 83 8 74 46 45 73 12 80 80 80 80 80 80 18 43 36 44 77 22 11 80 14 7 2 80 3 9 21 77 8 49 44 42 84 48 33 6 5 80 80 82 80 17 37 82 7 14 11 31 30 39 44 81 80 80 19 47 78 15 80 80 40 10 81 41 13 1 32 80 4 75 76 16 79 79 79 44 34 9 ...

Страница 44: ...4 FMV156EMC 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 CONTROL PANEL PARTS 59 57 56 29 52 53 58 59 60 55 54 51 71 72 28 27 24 25 26 23 28 61 62 63 67 68 65 66 64 35 DOOR PARTS MISCELLANEOUS ...

Страница 45: ...E TRAY TOP PAD BOTTOM PAD PACKING CASE ACCESSORY PACK WRAP COVER DOOR PAD Non replaceable items DOOR PROTECTOR GREASE FILTER x 2 77 INSTALL MATERIAL ASSEMBLY 61 69 OPERATION MANUAL 70 TOP WALL TEMPLATE EXHAUST DAMPER ASSEMBLY 78 50 INSTALLATION INSTRUCTIONS PACKING AND ACCESSORIES ...

Страница 46: ...46 FMV156EMC NOTES ...

Страница 47: ...47 FMV156EMC NOTES ...

Страница 48: ...RODUCTS INC ALL RIGHTS RESERVED Nopartofthispublicationmaybereproduced stored in retrieval systems or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher ...

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