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R-890SLM

Figure O-5(b) Oven Schematic-COMBI-2 cooking Condition (Microwave and Top Grill mode)

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COMBI 2 MODE SET.
3. COOKING TIME SET.
4. MICROWAVE POWER LEVEL SET.
5. START BUTTON PRESSED.

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COMBI 3 MODE SET.
3. COOKING TIME SET.
4. MICROWAVE POWER LEVEL SET.
5. START BUTTON PRESSED.

13 - 5

Figure O-5(c) Oven Schematic-COMBI-3 cooking Condition (Microwave and Bottom Grill mode)

Service_R-890SLM.indd 34

4/25/09 10:56:51 AM

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Содержание R-890SLM

Страница 1: ...ION MODELS R 890SLM This document has been published to be used for after sales service only The contents are subject to change without notice CHAPTER 9 CONTROL PANEL ASSEMBLY CHAPTER 10 PRECAUTIONS FOR USING LEAD FREE SOLDER CHAPTER 11 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE CHAPTER 12 MICROWAVE MEASUREMENT CHAPTER 13 CIRCUIT DIAGRAMS Parts List In interests of user safety the oven should ...

Страница 2: ...BLY TEST 8 4 14 N JOG SWITCH UNIT TEST 8 4 CONTENTS 15 O RELAY TEST 8 5 16 P PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD PWB IS OPEN 8 5 CHAPTER 9 CONTROL PANEL ASSEMBLY 1 OUTLINE OF CONTROL PANEL 9 1 2 SERVICING FOR CONTROL PANEL 9 2 CHAPTER 10 PRECAUTIONS FOR USING LEAD FREE SOLDER CHAPTER 11 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 1 BEFORE OPERATING 11 1 2 OU...

Страница 3: ...he device without a microwave energy absorbing load attached Never look into an open waveguide or antenna while the device is energized 3 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 wit...

Страница 4: ...eted and the oven is fully assembled the microwave power output should be checked and microwave leakage test should be carried out 2 1 REMEMBER TO CHECK 3D 1 Disconnect the supply 2 Door opened and wedged open 3 Discharge the 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 o...

Страница 5: ...ght 207 mm Depth 357 mm NOTE Internal capacity is calculated by measuring maximum width depth and height Actual capacity for holding food is less Turntable diameter 325 mm Control Complement Jog Touch Control System Clock 1 00 12 59 Timer 0 99 minutes Microwave Power for Variable Cooking Repetition Rate 100P HIGH Full power throughout the cooking time 70P MEDIUM HIGH approx 70 of FULL Power 50P ME...

Страница 6: ...rack 17 Low rack 4 1 2 TOUCH CONTROL PANEL 12 14 13 15 9 3 6 7 8 5 4 10 11 16 17 1 2 DIGITAL DISPLAY INDICATORS 1 LESS MORE 2 INFO 3 COOK 4 MICROWAVE 5 CONVECTION 6 BOTTOM GRILL 7 TOP GRILL 1 DIGITAL DISPLAY OPERATING BUTTONS 2 EXPRESS COOK button 3 EXPRESS DEFROST buttons 4 MICRO POWER button 5 COMBI button 6 CONV ºC button 7 GRILL button 8 SHORT CUTS button 9 QUICK EASY button 10 AUTO MINUTE but...

Страница 7: ... a cooking cycle the switches come to the following condition CHAPTER 5 OPERATION SEQUENCE SWITCH CONTACT CONDITION DURING COOKING DOOR OPEN NO COOKING Monitored latch switch COM NO COM NC Closed Opened Opened Closed Stop switch COM NO Closed Opened Monitor switch COM NO COM NC Closed Opened Opened Closed The circuit to the high voltage transformer is cut off when the contacts of relay RY2 and the...

Страница 8: ...OOKING Figure O 4 When the pre heat temperature is reached a beep signal will sound indicating that the holding the temperature has been reached in the oven cavity Open the door and place the food to cooked in the oven Press CONV ºC button And enter the convection time by rotate ENCODER dial When the START button is pressed the following operation occur 1 The numbers on the digital readout start t...

Страница 9: ... GRILL 100 SINGLE OPERATION Top heater 100 15min then 50 BOTTOM GRILL 100 SINGLE OPERATION Bottom heater 100 15min then 50 TOP 100 BOTTOM 100 Top heater 100 6min then 70 and 70 9min then 50 COMBI OPERATION Bottom heater 100 6min then 70 and 70 9min then 50 MICRO 100 TOP GRILL 100 Microwave 100 20min then 70 COMBI OPERATION Top heater 100 15min then 50 MICRO 70 10 TOP GRILL 100 Microwave COMBI OPER...

Страница 10: ...T TOP 50 40 40 30 20 10 10 10 10 10 BOTTOM 100 90 80 70 70 60 50 40 30 20 WITH PREHEATING HEATING ELEMENT TOP 50 40 40 30 20 10 10 10 10 10 BOTTOM 90 70 60 50 50 50 50 40 30 20 COOLING FAN 60 60min then 100 CONV FAN 100 0 4 3 COMBI 1 Micro Conv TEMP 250 C 230 C 220 C 200 C 180 C 160 C 130 C 100 C 70 C 40 C WITHOUT PREHEATING HEATING ELEMENT TOP 50 40 40 30 20 10 10 10 10 10 BOTTOM 100 90 80 70 70 ...

Страница 11: ...E 3 FUSE 1 FUSE 20A 250V If the wire harness or electrical components are shortcircuited this fuse blows to prevent an electric shock or ﬁre hazard 2 FUSE F8A 250V 1 If the wire harness or electrical components are shortcircuited this fuse blows to prevent an electric shock or ﬁre hazard 2 The fuse also blows when the monitored latch switch remains closed with the oven door open and when the monit...

Страница 12: ...tact with the food being cooked When the temperature inside the oven cavity reaches the selected temperature the heating elements are de energized When the temperature inside the oven cavity drops below the selected temperature the heating elements are energized again In this way the inside of the oven cavity is maintained at approximately the selected temperature When the convection time reaches ...

Страница 13: ... will require that a speciﬁc test be performed These tests are given a procedure letter which will be found in the Test Procedure section IMPORTANT If the oven becomes inoperative because of a blown fuse F8A in the monitored latch switch monitor switch circuit check the monitored latch switch and monitor switch before replacing the noise ﬁlter fuse F8A Service_R 890SLM indd 13 4 25 09 10 55 06 AM ...

Страница 14: ... n o i t i d n o c e l c y c g n i k o o c f o d n e e r o f e b n w o d s t u h s t u b e l c y c k o o c o t n i s e o g n e v O t a e h t o n s e o d e d o m g n i k o o c n o i t c e v n o C s i y t i v a c n e v o e h t n i e r u t a r e p m e t e h t t u b g n i t a r e p o e b o t s m e e s n e v O e n o t e s e r p n a h t r e h g i h r o r e w o l e t a r e p o s e o d t n e m e l e g n i...

Страница 15: ...est should be within the allowance of 2000cc alternative method 10 2 MICROWAVE LEAKAGE TEST This oven should be tested for microwave leakage on completion of any repair or adjustment following the procedure described in the Sharp Technical Training notes part number SERV LITMW01 The maximum leakage permitted in BS EN 60335 2 25 is 50W m2 equivalent to 5W m2 however it is not normal to detect any s...

Страница 16: ... D HIGH VOLTAGE CAPACITOR TEST CARRY OUT 3D CHECKS 1 Isolate the high voltage capacitor from the circuit 2 Continuity check must be carried out with measuring instrument which is set to the highest resistance range 3 A normal capacitor shows continuity for a short time kick and then a resistance of about 10MΩ after it has been charged 4 A short circuited capacitor shows continuity all the time 5 A...

Страница 17: ...ed replace the motor CARRY OUT 4R CHECKS 9 I NOISE FILTER TEST CARRY OUT 3D CHECKS Disconnect the leads from the terminals of the noise ﬁlter Using an ohmmeter check between the terminals as described in the following table MEASURING POINT INDICATION OF OHMMETER Between N and L Approximately 680kΩ Between terminal N and WHITE Short circuit Between terminal L and RED Short circuit If incorrect read...

Страница 18: ...ng the encoder the cooking time or the weight of food can not be entered 2 Control Panel The following symptoms indicate a defective control unit Before replacing the control unit perform the Jog switch unit test Procedure N to determine if control unit is faulty 2 1 In connection with buttons 1 When touching the buttons a certain group of buttons do not produce a signal 2 When touching the button...

Страница 19: ...n 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 CARRY OUT 3D CHECKS STEPS OCCURRENCE CAUSE OR CORRECTION 1 The rated AC voltage is not present between Pin Nos 5 and 7 of the 4 pin connector E Check supply voltage and oven power cord 2 The rated AC voltage is present at primar...

Страница 20: ...to compose a basic standard time in the clock circuit It accompanies a very small error because it works on commercial frequency 4 Reset Circuit A circuit to generate a signal which resets the LSI to the initial state when power is supplied 5 Buzzer Circuit The buzzer is responsive to signals from the LSI to emit audible sounds tact switch touch sound and completion sound 6 Stop Switch A switch to...

Страница 21: ... panel and the oven is so short that the two can t be separated For those models check and repair all the controls sensorrelated ones included of the control panel while keeping it connected to the oven b On some models the power supply cord between the control panel and the oven is long enough that they may be separated from each other For those models therefore it is possible to check and repair...

Страница 22: ...e iron temperature is adjusted accordingly 3 Soldering As the melting point of lead free solder Sn Ag Cu is higher and has poorer wettability ﬂow to prevent damage to the land of the PWB extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time Remove the bit as soon as a good ﬂow is achieved The high content of tin in lead free solder will cause prem...

Страница 23: ...or and High voltage rectiﬁer assembly Hot parts Grill heating element Oven lamp Magnetron High voltage transformer and Oven cavity 1 1 2 3 1 2 Sharp edge Bottom plate Oven cavity Waveguide flange Chassis support and other metallic plate Movable parts to prevent a fault Fan blade Fan motor Switch Turntable motor Convection motor 3 Do not catch the wire leads in the outer case cabinet 4 Insert the p...

Страница 24: ...ansformer is free 5 6 7 3 HIGH VOLTAGE COMPONENTS REMOVAL HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY To remove the components proceed as follows CARRY OUT 3D CHECKS Disconnect the ﬁlament lead of the high voltage transformer and the high voltage wire A from the high voltage capacitor Remove one 1 screw holding earth side terminal of the high voltage rectiﬁer assembly Remove one 1 s...

Страница 25: ...ure C 1 a Turntable Motor Cover Removal 8 CONVECTION FAN MOTOR REMOVAL 1 CARRY OUT 3D CHECKS 2 Remove the two 2 screws holding the back plate to oven cavity 3 Disconnect the wire leads from the convection motor 4 Remove the two 2 screws holding the rear heat cover to the oven cavity from out side 5 Remove the four 4 screws holding the convection fan duct to the oven cavity 6 Now the convection fan...

Страница 26: ...e Blue wire Noise filter Screw L TP F 8 A TL D E R A 0 2 T H W N 12 TOP HEATING ELEMENTS REMOVAL 1 CARRY OUT 3D CHECKS 2 Remove the two 2 screws holding the two 2 terminals of the main wire harness to the top heating element 3 Remove the two 2 screws holding the two 2 grill heater angles to the top of the oven cavity Terminal Push Pull down 1 2 Lever Positive lock connector Figure C 2 Positive loc...

Страница 27: ...ok should be placed where the monitored latch switch and stop switch have activated with the door closed 4 Secure the screws with washers ﬁrmly 5 Make sure of the all switches operation If the latch head has not pushed the plungers of the monitor switch with door closed adjust the latch hook position At that time the latch head should have pushed the plungers of the monitored latch switch and stop...

Страница 28: ...latch switch open And the contacts COM NO of their switches close 5 Re install outer case and check for microwave leakage around the door with an approved microwave survey meter Refer to Microwave Measurement Procedure 4 Reinstall the door handle and the door handle base to the door frame with the two 2 screws 5 Reinstall the latch spring to the latch head Re install the latch spring to the door f...

Страница 29: ...spacers are ﬁtted to ensure that measurement is taken 5cm from the surface of the oven PROCEDURE 3 Place the beaker containing the water load in the oven cavity at the centre of the turntable The placing of this standard load in the oven is important not only to protect the oven but also to ensure that any leakage it is not disguised by too large a load absorbing energy 4 Close the oven door and w...

Страница 30: ...n Schematic SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR OPENED 2 ENERGY SAVED MODE TO CANCEL ENERGY SAVED MODE SET THE CLOCK APPEARS ON DISPLAY Figure O 1 a Oven Schematic OFF Condition right after the oven is plugged in Figure O 1 b Oven Schematic OFF Condition when the oven door is opened 13 1 Service_R 890SLM indd 30 4 25 09 10 56 04 AM ...

Страница 31: ...CONDITION OF OVEN 1 DOOR CLOSED 2 MICROWAVE MODE SET 3 COOKING TIME SET 4 START BUTTON PRESSED Figure O 2 Oven Schematic Microwave cooking Condition SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 TOP GRILL MODE SET 3 COOKING TIME SET 4 START BUTTON PRESSED Figure O 3 a Oven Schematic Grill 1 cooking Condition TOP GRILL mode Service_R 890SLM indd 31 4 25 09 10 56 16 AM ...

Страница 32: ...1 DOOR CLOSED 2 BOTTOM GRILL MODE SET 3 COOKING TIME SET 4 START BUTTON PRESSED Figure O 3 c Oven Schematic Grill 3 cooking Condition TOP AND BOTTOM GRILL mode SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 TOP BOTTOM GRILL MODE SET 3 COOKING TIME SET 4 START BUTTON PRESSED Service_R 890SLM indd 32 4 25 09 10 56 30 AM ...

Страница 33: ...t fan motor and convection motor will be turned on and off according to the temperature See AUTO POWER CONTROL OPERATION SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 COMBI 1 MODE SET 3 COOKING TIME SET 4 MICROWAVE POWER LEVEL SET 5 CONVECTION TEMPERATURE SELECTED 6 START BUTTON PRESSED NOTE The top heating element bottom heating element magnetron fan motor and convection motor will be turned o...

Страница 34: ...MODE SET 3 COOKING TIME SET 4 MICROWAVE POWER LEVEL SET 5 START BUTTON PRESSED SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 COMBI 3 MODE SET 3 COOKING TIME SET 4 MICROWAVE POWER LEVEL SET 5 START BUTTON PRESSED 13 5 Figure O 5 c Oven Schematic COMBI 3 cooking Condition Microwave and Bottom Grill mode Service_R 890SLM indd 34 4 25 09 10 56 51 AM ...

Страница 35: ... R G D E R T H W N R B U L B N R G N R G N R G U L B E L B A T N R U T R O T O M R E M R O F S N A R T C T R O T I M N O M H C T I W S D E R O T I N O M H C T A L H C T I W S G R O G R O U L B N R B N R B D E R D E R D E R D E R G R O D E R K L B U L B Y R G A N C 1 B N C 2 D E R N R G D E R Y R G Y R G G R O D E R R E T L I F E S I O N L P T A 8 F L T RED 20 A WHT N G R O G R O U L B 1 2 N R B 3 ...

Страница 36: ...R 890SLM 3 Control Unit Circuit 13 7 Figure S 2 Control Unit Circuit Service_R 890SLM indd 36 4 24 09 5 20 44 PM ...

Страница 37: ...R 890SLM 4 Printed Wiring Board of Control Unit 13 8 Service_R 890SLM indd 37 4 24 09 5 20 50 PM ...

Страница 38: ...R 890SLM 5 Printed Wiring Board of Power Unit 13 9 Service_R 890SLM indd 38 4 24 09 5 20 57 PM ...

Страница 39: ...R 890SLM 6 Printed Wiring Board of Switch Unit 13 10 Figure S 3 Printed Wiring Board of Switch Unit Service_R 890SLM indd 39 4 24 09 5 21 02 PM ...

Страница 40: ...R 890SLM 13 9 Service_R 890SLM indd 40 4 24 09 5 21 04 PM ...

Страница 41: ...ur order ﬁlled promptly and correctly please furnish the following information 1 MODEL NUMBER 2 REF NO 3 PART NO 4 DESCRIPTION 1 OVEN PARTS 2 DOOR AND CONTROL PANEL PARTS TURNTABLE TRAY HIGH RACK PRINTED MATTER ACCESSORY HOLDER SPADPA015URE1 TOP PAD ASSEMBLY FPADBA018URK0 BOTTOM PAD ASSEMBLY FPADBA019URK0 DOOR PROTECTION SHEET SPADPA026URE0 PACKING CASE SPAKCE758WREZ Not Replaceable Items CAUTION ...

Страница 42: ...7 18 1 3 7 6 1 2 1 20 1 16 1 14 1 15 7 17 7 18 7 18 7 10 7 20 4 7 7 6 6 3 1 3 7 14 7 1 1 10 4 16 1 7 1 17 4 13 4 12 1 4 7 6 7 19 4 29 4 20 7 18 7 18 2 4 2 5 2 5 4 9 4 31 1 19 4 2 4 15 7 5 7 2 7 2 1 6 7 5 4 10 4 22 4 17 4 11 4 8 6 4 4 23 1 9 1 5 1 12 2 2 2 1 1 13 7 5 NOTE In the event of removing the turnta ble motor cover this part shouldbe refitted using screw connection XHTS740P08RV0 7 6 4 33 4 ...

Страница 43: ... AM 1 15 QSW MA085WRE0 Stop switch 1 AF 1 15 QSW MA147WRZ1 Stop switch Interchangeable 1 AM 1 16 QSW MA087WRE0 Monitor latch switch 1 AF 1 16 QSW MA146WRZ1 Monitor latch switch Interchangeable 1 AM 1 17 RMOTEA002URE2 Fan motor 1 AV 1 18 RLMPTA097WRZZ Oven lamp 1 AQ 1 18 RLMPTA066WRE1 Oven lamp Interchangeable 1 AP S 1 19 RTRN A021URE0 High voltage transformer 1 BN S 1 20 RV MZA327WRZ1 Magnetron 1 ...

Страница 44: ...HLDKA008WRF1 P clip 1 AF 6 4 CTNT A005URK0 Turntable tray 1 BD 6 5 FW VZA061URE3 Stop switch harness 1 AH SCREWS NUTS AND WASHERS 7 1 XHPS740P08K00 Screw 4mm x 8mm 1 AB 7 2 LX NZ0061WRE0 Nut 4 AA 7 3 LX CZA076WRE0 Special screw 2 AC 7 4 XOTS740P10000 Screw 4mm x 10mm 4 AB 7 5 XHPS740P06000 Screw 4mm x 6mm 3 AB 7 6 XHTS740P08RV0 Screw 4mm x 8mm 8 AG 7 7 XOTWW40P10000 Screw 4mm x 10mm 10 AA 7 8 XBBS...

Страница 45: ...DOOR AND CONTROL PANEL PARTS 3 5 3 2 3 12 3 11 3 8 3 7 3 10 3 9 3 3 3 6 3 4 5 3 5 4 5 1 5 6 5 7 5 5 5 2 6 5 2 4 5 2 1 5 2 5 5 5 2 x6 5 9 5 2 3 3 11 3 11 x10 3 1 5 8 5 2 8 Service_R 890SLM indd 45 4 24 09 5 21 35 PM ...

Страница 46: ...frame 1 5 2 3 JHNDPA331WRFZ Door handle base 1 5 2 4 LSTPPA017URF0 Latch head 1 AK 5 2 5 MSPRTA197WREZ Latch spring 1 AF 5 2 6 PGLSPA761WREZ Front door glass 1 5 2 7 XEPS730P08XS0 Screw 3mm x 8mm 1 AA 5 2 8 LX CZA106WREZ Special screw 2 AC 5 3 GCOVHA365WRF3 Choke cover 1 AS 5 4 XEPS730P08000 Screw 3mm x 8mm 6 AA 5 5 PCUSGA015URP0 Cushion 1 AF 5 6 HDECQA415WRTZ Handle decoration 1 5 7 HDECQA412WRFZ...

Страница 47: ...rt of this publication may be reproduced 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 Service_R 890SLM indd 48 4 24 09 5 21 57 PM ...

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