ACP AXP20, Service Manual

Page 1: ...______________ Service Manual High Speed Combination Oven AXP20 P1333601M P1333602M 60 Hz January 2011 16400002 Rev 3 AXP20JB P1333606M AXP20MK P1333612M AXP20QT P1333610M MXP20 P1333614M P1333615M ...

Page 2: ... 6 Oven Construction 7 12 Oven Performance Test 13 14 Troubleshooting 15 19 Display Diagnostics 20 Service Test 21 28 Touch Screen Calibration 29 Component Test Procedures 30 31 Quick Start Reference Guide 32 35 EZ Card Programming 36 Wiring and Schematic Diagrams 37 40 AXP MXP Care and Cleaning A 2 ...

Page 3: ...n ITISTHETECHNICIANSRESPONSIBLITYTOREVIEWALL APPROPRIATESERVICEINFORMATIONBEFOREBEGINNINGREPAIRS WARNING Toavoidriskofseverepersonalinjuryordeath disconnectpowerbeforeworking servicingonappliancetoavoid electrical shock Tolocateanauthorizedservicerpleasecontact ComServ Support Center Web Site Telephone Number WWW ACPSOLUTIONS COM E Mail commercialservice acpsolutions com 1 866 426 2621 or 319 368 ...

Page 4: ...icer is to cease repair and contacttheACPComServ Department immediatelyforfurtherdirection ACP willcontacttheproperGovernment Agency upon verification of the test results 1 Always operate the unit from an adequately grounded outlet Do not operate on a two wire extension cord 2 Beforeservicingtheunit ifunitisoperable perform themicrowaveleakagetest 3 Theovenshouldneverbeoperatedifthedoordoes not fi...

Page 5: ...alified service personnel Special tools are required to service equipment Contact nearest authorized service facility for examination repair or adjustment 10 DO NOT cover or block filter or other openings on equipment 11 DO NOT store this equipment outdoors DO NOT use this product near water for example near a kitchen sink in a wet basement or near a swimming pool etc 12 DO NOT immerse cord or plu...

Page 6: ... combustible materials follow manufacturer s recommendations on product use 10 Do not heat sealed containers or plastic bags in oven Food or liquid could expand quickly and cause container or bag to break Pierce or open container or bag before heating 11 To avoid pacemaker malfunction consult physician or pacemaker manufacturer about effects of microwave energy on pacemaker CAUTION Toavoidriskofpe...

Page 7: ...ctric shock by providing an escape wire for the electric current This oven is equipped with a cord having a grounding wire with a grounding plug The plug must be plugged into an outlet that is properly installed and grounded Consult a qualified electrician or servicer if grounding instructions are not completely understood or if doubt exists as to whether the equipment is properly grounded Do not ...

Page 8: ...00 Watts Convection fan 425 Watts 6200 RPM Radiant heater 3000 Watts Convection heater 2000 Watts Combination 5300Watts Dimensions Cabinet in cm 25 63 5 cm Width 20 25 51 cm Height 25 625 65 cm Depth includes bracket on back Oven Interior in cm useable space Width 16 0 41 cm Height 7 75 20 cm Depth 15 0 38 cm Weight lbs kg Uncrated 150 lbs 68 kg SPECIFICATIONS P1333601M P1333602M AXP20JB P1333606M...

Page 9: ...7 Air Filters Top Outer Panel Left Outer Panel Outercase Back OVEN CONSTRUCTION PANELS TOP SIDE Right Outer Panel Torx T 15 Torx T 15 Door AXP Adaptor Board AXP20QT Only OVEN CONSTRUCTION ...

Page 10: ...play Knob Collar Knob Data Key Board Data Key Board Holder OVEN CONSTRUCTION CONTROL PANEL ASSEMBLY Data Key Plug Caution Do not handle touch screen display by the sides This may damage the display circuitry Handle using the corners Bezel Filter Board OVEN CONSTRUCTION ...

Page 11: ...d Cooling Fans Thermocouple Temp Sensor RTD Radiant Power Supply Board 24 VDC OVEN CONSTRUCTION Circuit Boards Power Relay Limiter Triac Thermocouple Temp Sensor RTD Cooling Fans Convection Motor Snubber Note If Main Fuse F1 is blown replace Relay Monitor Board and Power Relay OVEN CONSTRUCTION ...

Page 12: ...TCO s Temp Sensor RTD Convection Switch Primary Triac TR2 Triac TR1 Magnetron 1 OVEN CONSTRUCTION HV Transformers Magnetrons Fuses Sensor Triac s Magnetron TCO s Capacitor Diodes Capacitor Diode Right Side Capacitor Diode Left Side Magnetron 2 Magnetron 2 Convection Heater Note If Main Fuse F1 is blown replace Relay Monitor Board and Power Relay Control Transformer AXP20QT Only Fuse 2 5A AXP20QT O...

Page 13: ...ctivation 3 Tighten mounting screws 4 Preheat oven to set temperature and verify switch adjustment settings and function Note To ensure proper switch adjustment the switch mounting MUST be tightened after each adjustment prior to testing the door alignment Removal 1 Remove switch assembly mounting screw 2 Push switch assembly 1 2 inch 13mm towards back of oven 3 Twist mounting leg towards oven cav...

Page 14: ...mbly Antenna Rivet Plastic Radiant Heater Alignment Arrows Gear Assembly Antenna Rivet Plastic Antenna Motor Cam Note Plastic Rivet cannot be reused Note Requires 15 16 26mm Deep Socket Flat Washer Multi Wave Spring Washer Lock Nut OVEN CONSTRUCTION ...

Page 15: ...en will beep remove test bowl from oven PREHEAT MENU 4 Press Pad 3 twice for 33 seconds 5 Press Start 7 Press OFF to return to PREHEAT MENU See page 14 for Oven Performance Test procedure Note To run Oven Performance Test the oven cavity must be at room temperature and the display must read MICROWAVE ONLY mode See below using oven as a microwave oven If MICROWAVE ONLY is not in display you must go...

Page 16: ...e and record the temperature T1 3 Place test container of water in the center of oven cavity and close door 4 Heat the water for a 33 second full power cycle NOTE Use a digital watch or a watch with a second hand for ovens with electromechanical timers 5 At end of the cycle remove test container Using the thermometer stir water for five to ten seconds and record temperature T2 6 Subtract the start...

Page 17: ...n Yes Error Code Appears 1 Refer To Display Diagnostics Page 19 PLUG OVEN IN No No PREHEAT TEMP 520 F PRESS TO PREHEAT PROGRAM CHANGE TEMP PREHEAT TEMP 520 F PROGRAM CHANGE TEMP 2 Clear Error History After Oven is Repaired NORMAL DISPLAY NORMAL DISPLAY POWER UP CONDITION Go to PREHEAT Condition PRESS TO PREHEAT See component test procedures section for testing procedures and results 4 Inoperative ...

Page 18: ... RTD Radiant 5 Inoperative Main Board 6 Broken or Loose Wire OVEN PREHEATING PREHEAT TEMP 520 F PROGRAM CHANGE TEMP MENU BACK MANUAL COOK 1 2 3 4 5 6 READY PREHEAT TEMP 520 F PROGRAM MANUAL COOK MENU CHANGE TEMP PREHEAT CONDITION Indicates Rising Temperature NORMAL DISPLAY NORMAL DISPLAY NORMAL DISPLAY Indicates Temperature Reached See component test procedures section for testing procedures and r...

Page 19: ...noperative Diode 10 Inoperative H V Transformer NEXT TEST PREV TEST CANCEL TURN ON MAGNETRON 1 5 12 AMPS MAGNETRON 2 5 12 AMPS SERVICE MODE OVEN INFORMATION DISPLAY VERSION 0 39 MAIN VER 0 46 EE 0 3 DOOR CYCLES 20 156 TUBE HRS 2156 EE 255 NEXT TEST PREV TEST EXIT CLEAR INFO PRESS NEXT TEST Yes MICROWAVE CONDITION Hidden Pad No Inoperative Touch Screen Yes NORMAL DISPLAY NORMAL DISPLAY 6 Inoperativ...

Page 20: ...DES CALL SERVICE OPEN DOOR PLACE FOOD CLOSE DOOR IN OVEN During oven operation the display may indicate one of the following 1 When you press the pad knob to preheat the oven the display indicates 2 During cooking the oven display indicates 1 After food is placed in the oven the door is closed the display indicates 1 After food is placed in the oven the door is closed the display indicates See com...

Page 21: ...k Switch 4 Inoperative Secondary Interlock Switch 5 Secondary Interlock Switch out of Adjustment 6 Broken or Loose Wire Connection 7 Inoperative HV System Magnetron See component test procedures section for testing procedures and results CHASSIS MEMORY ERROR 1 Unplug the oven and remove right side panel 2 Disconnect the data key board connector from the display board Figure 1 3 Plug the oven in Se...

Page 22: ...ded Max Temp Unplug Plug oven in G 2 Magnetron TCO Perform service test Magnetron 1 2 G 2 Cooling Motor Perform service test Cooling Fan H 0 Signal Missing Plug disconnected from J1 on main board H 1 Main Board Set Point Incorrect Unplug Plug oven in H 2 Main Board Replace main board H 3 Main Board Replace main board M 0 Current Sense Low Amps Perform service test Magnetron 1 2 M 1 Magnetron 1 Low...

Page 23: ...ntrol boards and information about door cycles and tube hours NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test CLEAR INFO Press this pad to reset the Door Cycles and Tube Hours back to zero EXIT Press this pad to return to the ovens Main Menu Hidden Pad 1 1 Press OFF pad until PRESS TO PREHEAT appears 2 Press Hidden Pad 3...

Page 24: ...s this pad to return to the Main Menu RANGE Under normal operation each mag s amp draw should be 5 12 amps Manual Operation of Magnetron 1 Screen This screen will allow operation of Magnetron 1 and show the number of amps being drawn NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test TURN ON This pad will toggle between tur...

Page 25: ...this pad to return to the Main Menu RANGE Under normal operation the amp draw should be 5 12 amps Convection Heater Screen This screen will allow operation of the convection heater and show the number of amps being drawn NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test TURN ON This pad will toggle between turning the heat...

Page 26: ...rn to the Main Menu RANGE Under normal operation the amp draw should be 10 16 amps Convection Fan Low Speed Screen This screen will allow operation of the convection fan at a low speed and show the number of amps being drawn NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test TURN ON This pad will toggle between turning the ...

Page 27: ...this pad to return to the Main Menu RANGE Under normal operation the amp draw should be 0 6 2 6 amps Cooling Fan Screen This screen will allow operation of the cooling fan show the number of amps being drawn NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test TURN ON This pad will toggle between turning the cooling fan on an...

Page 28: ...ad to return to the Main Menu RANGE Under normal operation the amp draw may be to low to read RTD Status Screen This screen will show the temperatures being reported to the RTD s in the oven The maximum temps seen by the controller are also recorded for diagnostic purposes NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test ...

Page 29: ...PREV TEST Press this pad to go to the previous Service Mode Test CANCEL Press this pad to return to the Main Menu Error List Screen This screen will show a description of the types of errors that can occur NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test CANCEL Press this pad to return to the Main Menu 12 13 Service Test ...

Page 30: ...nce through the history of the error codes 1 10 CANCEL Press this pad to return to the Main Menu Voltage Switching Screen This screen will show the line voltage detected by the oven NEXT TEST Press this pad to go to the next Service Mode Test PREV TEST Press this pad to go to the previous Service Mode Test CANCEL Press this pad to return to the Main Menu Note To clear codes Press and hold Pad 1 un...

Page 31: ...ion on the Display 6 Press Directly On the small Square in the Display again until the 7 Press the 0 Pad 8 A small box will appear in the top left square Press on each box and the small square will follow After you have touched all the boxes and the small square followed you go to step 9 9 Press the 0 pad to return to the Stand by screen Hidden Pad square disappears Standby Screen Note If the smal...

Page 32: ... no voltage check H V board and wiring Capacitor Discharge Capacitor Remove wires from capacitor terminals and connect ohmmeter set on highest resistance scale to terminals Also check between each terminal and capacitor case Between Terminals Meter should momentarily deflect towards zero then return to over 5 MΩ If no deflection occurs or if continuous deflection occurs replace capacitor Terminal ...

Page 33: ...in the coil circuit Measure resistance from Terminal 0 to terminal 1 coil 0 1 2 4 6 8 Approximately 6 to 7 M NOTE Analog meter is recommended for measurement NOTE If using a digital meter it must contain a battery of 6 volts minimum Wire harness High voltage board to display module harness Test continuity of wires Indicates continuity Ω Line Voltage ST2 GN YL OR BU Disconnect ST2 Fan should operat...

Page 34: ... the dial clockwise to scroll through menu options 2 The current menu selection will be highlighted 3 To select menu item press dial The icons below will be used throughout this guide to indicate when menu navigation other than the dial is necessary TOUCH SCREEN KEYPAD Getting Started Using MANUAL COOK To cook food using a specific entered time and power level 1 After oven has preheated Select MAN...

Page 35: ...erase one character at a time 4 Highlight SAVE button and press dial to select when item is complete If you do not wish to save the entry press the back button to return the oven to Program Edit without saving 5 Press BACK button to return to READY display ACCESSING THE PROGRAM MENU 1 To access the PROGRAM MENU select the BACK button on the main menu screen 2 Then select PROGRAM from the READY scr...

Page 36: ...mperature 6 Input desired microwave power 7 Input desired fan speed 8 Input desired IR heating setting 9 Press SAVE button on screen If necessary repeat steps 4 through 8 for stages 2 3 and 4 10 Enter Item Names using letters on keypad and touch SAVE TOUCH SCREEN COOKING PROGRAM MENU KEYPAD Push Push Push Push Push Push SAVE SAVE SAVE SAVE SAVE ASSIGNED NAME Mozz Ch St SPACE CLEAR BACK SAVE TOUCH ...

Page 37: ...mbination Oven KEYPAD Option Setting Name Options Single digit entry 1 Digit Entry Double digit entry 1 Level 2 Levels 2 Menu Setting 3 Levels Manual cooking allowed 3 Manual Lock Manual cooking not allowed Changes to programs allowed 4 Program Lock Password needed Opening door resets timer 5 Door Open Opening door pauses cook cycle Off 6 Keybeep On Low Medium 7 Keybeep Volume High Continuous unti...

Page 38: ...5 Select the desired operation by highlighting Transfer card to oven or Transfer oven to card with the knob 6 Press the Start pad to begin the transfer The screen will indicate transferring and indicate done when transfer is complete 8 Remove EZCard and close the protective cover Note You can exit from programing the oven by pressing off keypad 7 Press the SAVE pad to complete the process Standby ...

Page 39: ...CH TERM BLOCK NO COM NC RADIANT RTD WH THERMOCOUPLE MAGNETRON 2 YL BR BU GY OR VT VT SECONDARY INTLK SWITCH NO COM NC GY OR VT BR RD YL VT YL OR BU OR BK VT FUSE F6 BU GY FUSE F5 BU BK GY GY VT VT WH YL RD WH BK YL BK YL FUSE F2 F3 F4 BR BR FUSE F1 OR BK BK OR RD RD RD BU RD RD RD YL YL YL YL MAGNETRON 1 WH BK RD RD 1 G 2 RADIANT HEATER TRIAC TR4 YL VT VT RD GN YL OR BU VT OR CONVECTION HEATER TRI...

Page 40: ...38 Radiant RTD Convection RTD INTERLOCK POSITION DOOR CLOSED F6 Schematic Diagram AXP20 P1333601M P1333602M AXP20JB P1333606M AXP20MK P1333612M MXP20 P1333614M P1333615M ...

Page 41: ...LOCK NO COM NC RADIANT RTD WH THERMOCOUPLE MAGNETRON 2 YL BR BU GY OR VT VT SECONDARY INTLK SWITCH NO COM NC GY OR VT BR RD YL VT YL OR BU OR BK VT FUSE F6 BU GY FUSE F5 BU BK GY GY VT VT WH YL RD WH BK YL BK YL FUSE F2 F3 F4 BR BR FUSE F1 OR BK BK OR RD RD RD BU RD RD RD YL YL YL YL MAGNETRON 1 WH BK RD RD 1 G 2 RADIANT HEATER TRIAC TR4 YL VT VT RD GN YL OR BU VT OR CONVECTION HEATER TRIAC TR3 GY...

Page 42: ...24VDC U17 20032801 J14 2 J9 1 J8 7 J9 2 J4 1 G T1 T2 TR1 J14 1 J8 8 U19 U8 K1 G T1 T2 40ATR3 G T1 T2 40ATR4 G T1 T2 TR2 J9 3 J9 4 SECONDARY INTERLOCK PRIMARY INTERLOCK U10 U15 J5 1 J5 3 J5 4 J5 2 K2 J5 5 2 4 0 1 6 8 MONITOR INTERLOCK G T1 T2 40ATR2 J8 2 J8 3 J8 1 U11 K3 J6 3 J6 1 J6 2 200 230 CONTROL U14 K4 J6 6 J6 4 J6 5 200 230 G T1 T2 40ATR1 J8 5 J8 6 J8 4 F3 T2 TO HV CIRCUIT LEFT MAGNETRON T1 ...

Page 43: ...Appendix A A 1 ...

Page 44: ...B If oven is cold For optimum results heat oven to a maximum temp of 200 F 94 C turn oven OFF wait until fan stops 2 Remove rack pizza stone and other accessories from the cavity when it s cooled 3 Lift Bottom Element If element is warm use insulated gloves oven mitt or tongs to lift the element Remove baked on particles using a scraper 4 Spray Oven Interior Wear rubber gloves and safety glasses S...

Page 45: ...one by using a plastic scraper to remove baked on particles DO NOT DO NOT use caustic cleaning products or those containing ammonia phosphates chlorine sodium or potassium hydroxide lye DO NOT use a water pressure type cleaning system DO NOT cook foods with plastic wrap on them DO NOT use abrasive scouring pads to clean ceramic side covers and the red sealant surrounding each cover DO NOT wash or ...

Page 46: ...60 Hz High Speed Combination Oven January 2011 16400002 Rev 3 ...