Mitsubishi Electric MR-E55R-F-C Service Manual

Mitsubishi Electric MR-E55R-F-C Service Manual

Home refrigerator
Table of Contents

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HOME REFRIGERATOR
SERVICE MANUAL
Models
MR-E55R-F-C
MR-E55R-PS-C
MR-E60R-F-C
MR-E60R-PS-C
Model name
indication
(Inside this door)
C •••• Taiwan
NOTE:
• RoHS compliant products have <G> mark on the spec name plate.
CONTENTS
1. SPECIFICATIONS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••2
2. WIRING DIAGRAM ••••••••••••••••••••••••••••••••••••••••••••••••••••••••5
3. OUTLINES AND DIMENSIONS •••••••••••••••••••••••••••••••••••••••••7
4. REFRIGERANT CIRCUIT ••••••••••••••••••••••••••••••••••••••••••••••••9
5. TROUBLESHOOTING••••••••••••••••••••••••••••••••••••••••••••••••••• 10
5-1 FUNCTION OF OPERATION PANEL ••••••••••••••••••••••••••• 10
5-2 FLOWCHART OF SELF-CHECK •••••••••••••••••••••••••••••••• 22
5-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD •••••••• 26
5-4 AUTO ICE MAKER ••••••••••••••••••••••••••••••••••••••••••••••••• 26
5-5 FLOWCHART OF TROUBLE CRITERION •••••••••••••••••••• 28
5-6 TROUBLE CRITERION OF MAIN PARTS ••••••••••••••••••••• 35
5-7 TEST POINT DIAGRAM OF FILTER BOARD •••••••••••••••• 42
5-8 TEST POINT DIAGRAM OF CONTROL BOARD •••••••••••• 42
6. NAMES OF THE PARTS ••••••••••••••••••••••••••••••••••••••••••••••• 47
7. DISASSEMBLY INSTRUCTIONS ••••••••••••••••••••••••••••••••••••• 48
PARTS CATALOG (OAB110)
No. OAH110

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Summary of Contents for Mitsubishi Electric MR-E55R-F-C

  • Page 1 HOME REFRIGERATOR No. OAH110 SERVICE MANUAL Models MR-E55R-F-C MR-E55R-PS-C MR-E60R-F-C MR-E60R-PS-C Model name indication (Inside this door) CONTENTS 1. SPECIFICATIONS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••2 2. WIRING DIAGRAM ••••••••••••••••••••••••••••••••••••••••••••••••••••••••5 3. OUTLINES AND DIMENSIONS •••••••••••••••••••••••••••••••••••••••••7 4. REFRIGERANT CIRCUIT ••••••••••••••••••••••••••••••••••••••••••••••••9 5. TROUBLESHOOTING••••••••••••••••••••••••••••••••••••••••••••••••••• 10 5-1 FUNCTION OF OPERATION PANEL ••••••••••••••••••••••••••• 10 5-2 FLOWCHART OF SELF-CHECK ••••••••••••••••••••••••••••••••...
  • Page 2: Specifications

    SPECIFICATIONS SPECIFICATIONS MR-E55R-C MR-E60R-C E55R E60R Power supply 110 V, 60 Hz V,Hz Total capacity 545 (gross) 601 (gross) Dimensions (H × W × D) 1821 × 685 × 728 1821 × 745 × 728 Acrylic resin coated steel Cabinet ABS resin Food liner Cabinet...
  • Page 3 ELECTRICAL PARTS SPECIFICATIONS MR-E55R-C Model EFI100E 13DHH Power supply 110 V, 60Hz Rated input 45 (1620rpm) Compressor Starting current 4 (Current limiter) Running current 0.69 (1620rpm) Winding resistance (A.T.20 ) 12.4 Model MM3-71CCV Ambient temperature Motor protector Time Sec. 16 or less Current 17.0 Model...
  • Page 4 ELECTRICAL PARTS SPECIFICATIONS MR-E60R-C Model EFI100E 13DHH Power supply 110 V, 60Hz Rated input 45 (1620rpm) Compressor Starting current 4 (Current limiter) Running current 0.69 (1620rpm) Winding resistance (A.T.20 ) 12.4 Model MM3-71CCV Ambient temperature Motor protector Time Sec. 16 or less Current 17.0 Model...
  • Page 5: Wiring Diagram

    WIRING DIAGRAM MR-E55R-C MR-E60R-C ( SKELETON WIRING DIAGRAM ) The wiring diagram in the dashed line is the same as the one attached to the products. VALVE MOTOR ICE GEAR BOX TEMP. CONTROL BOARD MOTOR DAMPER MOTOR DAMPER THERMOPILE (ON DISPLAY PANEL) CONTROL BOARD,N/F BOARD F1 : 10A FUSE FUSE3: 3A FUSE...
  • Page 6 MR-E55R-C ( ACTUAL WIRING DIAGRAM ) MR-E60R-C ICE/ VERSA REFRIGERATOR VEGETABLE COMPRATMENT DOOR FREEZR COMPARTMENT DOOR COMPARTMENT DOOR COMPARTMENT DOOR TEMP. CONTROL BOARD WHITE WHITE WHITE LIGHT BROWN YELLOW SKY BLUE BLUE BLUE WHITE LIGHT GREEN WHITE SKY BLUE WHITE/ RED LIGHT BROWN BLACK WHITE...
  • Page 7: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit : mm MR-E55R-C 685(Display) 680(Cabinet) 728(Display) 283.5 394.5 358.8 358.5 283.5 394.5 578(Pitch between the rear wheels) 631(Pitch between the adjust bolts) 666(Pitch between the front wheels) REQUIRED SPACE FOR INSTALLATION R(L) : Refrigerator compartment (Left) R(R) : Refrigerator compartment (Right) DOOR DIMENSION : Ice making compartment...
  • Page 8 MR-E60R-C 745(Display) 740(Cabinet) 728(Display) 283.5 454.5 358.5 358.5 283.5 454.5 638(Pitch between the rear wheels) 691(Pitch between the adjust bolts) 726(Pitch between the front wheels) REQUIRED SPACE FOR INSTALLATION R(L) : Refrigerator compartment (Left) R(R) : Refrigerator compartment (Right) DOOR DIMENSION : Ice making compartment R(L) R(R)
  • Page 9: Refrigerant Circuit

    REFRIGERANT CIRCUIT MR-E55R-C MR-E60R-C Muffler Evaporator Suction pipe Capillary tube 1.6× 0.63×2740(mm) Cabinet Condenser pipe Dryer #150 Capillary tube 1.8× 0.67×2740 (mm) Charge pipe (High pressure side) Charge pipe (Low pressure side) 6.35 Compressor Three-way valve...
  • Page 10: Troubleshooting

    TROUBLESHOOTING 5-1 FUNCTION OF OPERATION PANEL MR-E55R-C MR-E60R-C (1) Function of normal operation ICE SELECT button Pressing this button selects the setting of the ice making compartment. Supercool freezing button The supercool freezing operation starts. This operation starts only when the room selection is set to the versa compartment, and also the versa compartment is set to soft freezing mode.
  • Page 11 (2) Demonstration mode for shop display Setting Within 1 minute after power supply turns on, press the , and simultaneously for 5 seconds with the door of the ice making compartment opened. When the setting is complete, a “beep” sound is heard and “Auto Demo Mode” is displayed. Demonstration mode is not available when the temperature of freezer compartment is –7°C or lower.
  • Page 12 (6) Service Check Function 1) Outline • The chart below shows the outline of service check function. • “Service check entry” needs to be set in order to perform each check mode. After setting “service check entry,” start the setting operation of the check mode to be displayed. •...
  • Page 13 2) Compressor’s rotational speed change mode Setting With the ice making compartment’s door opened, simultaneously press for 3 seconds until a “beep” sound is heard. starts to blink. With the door opened, press for 3 seconds to start compressor’s rotational speed change mode. Once this mode starts, it continues operating even if the door is closed.
  • Page 14 Release With the ice making compartment’s door opened, press simultaneously for 3 seconds until a “beep” sound is heard. The screen returns to the normal temperature display. The function is automatically released in one hour. Although unplugging and plugging the power code can release this function, it is recommended to follow the procedure above for protection of the compressor.
  • Page 15 Opening and closing dampers (1) Press to select the damper to be set. Each press of the button makes a “beep” sound and changes the kind of dampers. The serial number described in a) indicates the selected damper. The selected damper is displayed using the serial number (1: refrigerator ~ 10: deodorization) in numeric order repeatedly. Refrigerator damper slide chilled compartment damper ice making compartment damper...
  • Page 16 4) Thermistor temperature check mode Setting With the ice compartment door opened, press simultaneously for 3 seconds until a “beep” sound is heard. blinks. With the door opened, press for 3 seconds. Thermistor temperature check mode starts. Once this mode starts, it continues operating even if the door gets closed. Thermistor temperature check mode is not available during demonstration mode, compressor's rotational speed change mode, set temperature adjustment mode, error history display mode, or when child lock is effective.
  • Page 17 d) Thermistor temperature ones’ place Ones’ place of thermistor temperature is indicated on the display part which is usually used for ice making setting. Display of corresponds to the values, 8/4/2/1. The sum of the corresponding values of lighting indicators is the ones’ place of thermistor temperature. Corresponding Room display values...
  • Page 18 5) Error history display mode The errors occurred in the past can be observed as an error history. Use this mode when the actual problem of the refrigerator is different from the error that was displayed at the service-call received. Error history display mode offers two ways of display.
  • Page 19 •Display during order of occurrence mode Errors are displayed from the newest to the older. Tens’ place Ones’ place Error code Pre-display Pre-display sec. sec. sec. sec. 3sec. 5sec. 5sec. 5sec. 3sec. Repetition When no error occurred in the past, error code is not displayed. Check points and resetting the error history Check and take appropriate measures according to the procedures as stated in 5-2(1).
  • Page 20 a) Compartment serial number Serial number of the selected compartment for set temperature adjustment is displayed on the part that are usually used for room display. Each serial number is assigned to each compartment that will be used in set temperature adjustment mode besides damper operation mode and thermistor temperature check mode.
  • Page 21 Door Buzzer System : Door buzzer has been installed so that one will not forget to close the door. • The buzzer rings in the following conditions: 1. When door is left open. 2. When refrigerator fan motor or box fan is abnormal. Buzzer Every 1 minute, for 4 minutes "Beep beep"...
  • Page 22: Flowchart Of Self-Check

    5-2 FLOWCHART OF SELF-CHECK MR-E55R-C MR-E60R-C (1) Troubleshooting with self-check This refrigerator has self-check feature to clarify and indicate where & what the trouble is. You can perform operation checks and identify malfunction of electric or electronic parts. Error history is recorded and can be displayed by the refrigerator. Self-check Error history mode (Refer to 5-1.(6)5)) Problem may recover automatically.
  • Page 23 (2) Timing in self-check Trouble of Defrost heater : Self-check is conducted after defrosting. (Make sure to confirm the display before unplugging the power cord because it is automatically reset once the power cord is unplugged.) Trouble of Ice maker : Press the switch on the panel for 5 seconds.
  • Page 24 Display Error Detecting method Display Trouble Check point Measures Control code (*3) Tens' place Ones' place 1. Connector CN9S on control board, Repair the Synchronize the open/ When there is a short Trouble of 4-pin wire to wire connector contact failure. close status of R damper or open circuit in the E 13...
  • Page 25 Display Error Detecting method Display Trouble Check point Measures Control code (*3) Tens' place Ones' place Trouble of • When there is any inverter circuit trouble in the circuit E 50 which detects current of compressor. (*6) Trouble of • When the range of bus- bus-bar volt- bar voltage is not approx.
  • Page 26: Block Diagram Of Printed Circuit Board

    5-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD MR-E55R-C Operation P.C. board MR-E60R-C • Setting up temperature, feature, quick mode and eco mode for each compartment • Display of self-check • Outside air thermistor • Buzzer Control board Control circuit of refrigerator Inverter control circuit of compressor •...
  • Page 27 (3) Operation by ice making test Ice stock detective The ice tray is Completion Water pump motor Press the lever detects the rolled over and the When abnormality is operates. amount of ice. switch for 5 sec- system is reset. occurs, the error code onds or more.
  • Page 28: Flowchart Of Trouble Criterion

    5-5 FLOWCHART OF TROUBLE CRITERION MR-E55R-C MR-E60R-C Excessive cooling No cooling, poor cooling Is the temperature of Is the temperature of Set the temperature to Set the temperature to refrigerator compart- refrigerator compart- “Low”. “High”. ment/ set to “Low”? ment/ set to “High”? Open the refrigerator Keep the food away Proceed to [5] at page...
  • Page 29: Control Board

    Poor cooling Set the temperature to “High”. Is the set temperature of freezer compartment set to “High”? Does cool air come out of air outlet when opening the refrigerator Proceed to “The refrigerator fan motor does not work.” compartment door and attaching a magnet bar on the door switch ? When compressor Check freezer compartment thermistor.
  • Page 30 Inverter-related indication “Compressor does not operate” Error Abnormality Possible cause Symptom Measures code Trouble of • When there is Compressor Replace the control board. inverter circuit any trouble in does not the circuit which rotate. detects phase current of com- pressor.
  • Page 31 Inverter-related indication “Compressor does not operate” Error Abnormality Possible cause Symptom Measures code 1. Locate the trouble and decide the measures. • Defective wir- • Defective con- Compressor • Decide the measures by checking the followings. ing continuity nection of con- cannot be (1) Defective connector connections.
  • Page 32 Poor cooling Short-circuit the terminals of the compulsory Check the following and explain the defrosting terminals (CN7M) of the control board to actuate Yes (heats up) result: half-open door, space between the compulsory defrosting function and check whether the gaskets, the amount of ice. defrost heater is working properly.
  • Page 33 Excessive cooling Poor cooling Is the temperature of Is the temperature of Set the temperature to Set the temperature to vegetable compartment vegetable compartment “Low”. “High”. set to “Low”? set to “High”? Is the temperature of Set the temperature to freezer compartment “Middle”...
  • Page 34 Excessive cooling No cooling; poor cooling only applies to versa compartment. Which operation mode is versa compartment set to? Which operation mode is versa compartment set to? It is set to “Soft freezing”. It is set to “Soft freezing”. It is set to “Freezer”. Is the temperature Set the temperature to “High”.
  • Page 35: Trouble Criterion Of Main Parts

    5-6 TROUBLE CRITERION OF MAIN PARTS MR-E55R-C MR-E60R-C Components/ Parts Mounted Check Method and Criterion Part Name Position Compressor In the machine Model EFI100E13DHH White chamber at the Rated input 45 (1620 rpm) rear side of the frame Starting current 0.69 (1620 rpm) Running current (For only 1 minute after startup)
  • Page 36 Components/ Parts Mounted Check Method and Criterion Part Name Position Water pump Measure the resistance with a tester. (Ambient temperature : Room temperature) Under the water motor tank holder in refrigerator com- partment Abnormal (faulty) Normal Open ( ) or 16 (Approx.) short circuit (0 )
  • Page 37 Components/ Parts Mounted Check Method and Criterion Part Name Position Defrost heater 1 At the drip tray Rated input under the evap- The heater is energized while defrosting. orator of the Operation method (Defrosting is finished when the evaporator is 14±1.5 or more) freezer Measure the resistance with a tester.
  • Page 38 Components/ Parts Mounted Check Method and Criterion Part Name Position Measure the resistance with a tester. (Ambient temperature : Room temperature) Rotational heater In partition of board refrigerator com- partment door Normal Abnormal (faulty) 1.5k (Approx.) Open circuit ( While compressor is operating, the heater is turned on. Operation method When compressor stops, the heater is suspended for the first 20 minutes and then reactivated.
  • Page 39 Components/ Parts Mounted Check Method and Criterion Part Name Position Three-way In the machine valve chamber at the Model NSCE001DC1 rear side of the frame Normal Abnormal 54~66 (Gray Open ( ) or [common] A/ A/ B/ short circuit (0 ) B each phase) B A COM B A Check the operation of three-way valve...
  • Page 40 Components/ Parts Mounted Check Method and Criterion Part Name Position Interior LED In the refrigerator (12V DC) compartment: It lights up while the refrigerator compartment door is open.(If the on the left and LED lighting door stays open for 60 minutes in a row, the LED automatically goes right wall towards duration off.
  • Page 41 Components/ Parts Mounted Check Method and Criterion Part Name Position i-see sensor On the ceiling near motor (12V DC) front in the versa Model NSEV001DA1 compartment Resistance - 154 (common-A/A/B/B each phase) 1) Operation check… Refer to “Operation check of the i-see sensor Abnormal criterion motor”...
  • Page 42: Test Point Diagram Of Filter Board

    5-7 TEST POINT DIAGRAM OF FILTER BOARD MR-E55R-C MR-E60R-C 110V AC 5-8 TEST POINT DIAGRAM OF CONTROL BOARD MR-E55R-C The capacitor that is used for the inverter is charged to 330V DC, so electric charge remains for a while even after power off. MR-E60R-C Therefore, an electric shock may occur if the charging portion is touched by hand.
  • Page 43: Troubleshooting For Supercool Freezing Operation

    5-9 TROUBLESHOOTING FOR SUPERCOOL FREEZING OPERATION 5-9.1 FAQ Symptom/Problem Possible cause Explanation to the customer/Solution Supercool freezing does not keep foods fresh. Improper supercool freezing operation Supercool freezing does not work. • The amount of drip from meat and/or • The versa compartment is not set to the •...
  • Page 44 5-9.2 Failure diagnosis First diagnosis…Diagnosis of air path switching according to food temperature Do not remove the power plug. (The supercool freezing mode is not available for four hours after the power is turned on.) Check the temperature of the versa compartment when the supercool freezing mode is OFF. (Make sure that the cooling function is working properly according to the settings of soft freezing.) Press the button.
  • Page 45 5-9.3 Failure diagnosis for the thermopile (HIKARI i-see Sensor) 1. Diagnostic procedure <Outline> • In the “Thermistor check mode”, check the following: Response and Detected temperature. • Set the versa compartment to “soft freezing” and check Response check: Make sure that the detected temperature changes by placing your hand under the sensor. Detected temperature check: Put the vinyl tape on the aperture of the thermopile, and check the detected temperature.
  • Page 46 5-9.3 Failure diagnosis for the thermopile (HIKARI i-see Sensor) 3. Outline and detected temperature of the thermopile • 2 kinds of temperature information (voltage) are output from the thermopile. Vtamb: Temperature information about the thermopile itself ( ambient temperature) Vtobj: Temperature information about the object to be detected by the thermopile (infrared ray) Each output changes between 0 V ~ 5 V.
  • Page 47: Names Of The Parts

    NAMES OF THE PARTS MR-E55R-C MR-E60R-C Refrigerator compartment Interior LED Operation panel AUTO-shelf Two-way flexishelf ICE SELECT button Supercool freezing button Change pocket (large) SELECT/QUICK button ROOM button Change pocket (small) Turns off if the LED BLUE LED stay lit for 5 minutes Lid of slide chilled case Small item case Slide chilled case...
  • Page 48: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS MR-E55R-C MR-E60R-C Plug out before work!! Check the automatic ice-maker pressing ice making stop switch. When assembling & disassembling parts seven kinds of screws and rivets are used. Do not mistake to use them. 4 12 4 12 (Black) 4 16 (White) Specified screw Rivet...
  • Page 49 OPERATING PROCEDURE PHOTOS Photo 5 Removing the AUTO-shelf from the AUTO-shelf frame. AUTO-shelf frame Remove the catches in the back (3 places), and lift up the AUTO-shelf as shown in photo 6. (See photos 5, 6) AUTO-shelf The catches in front (4 places) will detach. Pull the AUTO-shelf toward you to remove.
  • Page 50 OPERATING PROCEDURE PHOTOS Photo 9 Interior LED (right and left) Removing Remove the screw on the right or left LED. (See photo 9) Slide upward the right or left interior LED while pushing up the bottom, and pull toward you to remove. Note: If the interior LED is too stiff to slide upward and to remove by hand, place a piece of board at the bottom of the LED, and...
  • Page 51 OPERATING PROCEDURE PHOTOS Photo 12 3. Parts inside the versa compartment : I-see sensor Versa compartment ceiling with deodorizing filter (1) Remove the parts in the versa compartment. Screw (2) Slide the two-way flexishelf toward you. I-see sensor (3) Remove the screw (1 screw) and the connector. (See photo 12, 13) Versa compartment Versa compartment ceiling with deodorizing filter...
  • Page 52 OPERATING PROCEDURE PHOTOS Photo 16 4. Parts inside the ice making compartment, versa compart- ment, vegetable compartment, and freezer compartment : Partition I Partition S Partition I/S cover Partition I/ Cover (IM) Automatic ice maker assembly Cover (upper) Fan grille Evaporator Defrost heater, Drip Parttition S...
  • Page 53 OPERATING PROCEDURE PHOTOS Photo 20 Cover (IM) (7) Remove catches (3 places) in order to detach the cover. (See photo 20) Catches (Automatic Tank holder Automatic ice maker assembly Ice maker assembly) (8) Remove pressing catches (2 places) upward, and pull auto- matic ice maker assembly to the right side.
  • Page 54 OPERATING PROCEDURE PHOTOS Evaporator Photo 23 (11) Remove the 4-pin connector that is stowed in the contoured DEF thermistor Brazed section section of main refrigerator housing. Evaporator Detach the brazed section of piping. Remove the catch pro- Figure 2 truding from the contoured section of main refrigerator hous- Defrost ing to remove the evaporator.
  • Page 55 OPERATING PROCEDURE PHOTOS Defrost heater Drip tray Figure 3 (12) Detach the defrost heater from the catch on the main refrig- Heater roof erator housing. Slide the defrost heater out towards you. Remove the defrost heater from the heater roof. (See figure 3) Remove the aluminum tape, then the drip tray.
  • Page 56 OPERATING PROCEDURE PHOTOS Defrost thermistor Photo 28 (13) Cut the nylon fastener and detach the defrost thermistor from the evaporator. (See photo 28) The defrost thermistor and the evaporator pipe heater are connected to the 4-pin connector. Cut the lead wires of the defrost thermistor at the base of the 4-pin connector.
  • Page 57 OPERATING PROCEDURE PHOTOS Photo 33 Vegetable compartment ceiling Rivet Rivet Rivet (14) Remove the rivets (3 rivets) to pull the ceiling toward you. (See photo 33) Connector cover V (15) Remove the rivet (1 rivet). (See photo 34) Vegetable compart- Vegetable compartment LED ment ceiling (16) Remove the screw (1 screw) (See photo 35)
  • Page 58 OPERATING PROCEDURE PHOTOS Photo 37 5. Parts inside the refrigerator compartment Left rail of the slide compartment Parts inside the ice mak- ing compartment Ice making compartment door Tank holder Tank holder Door switch Door switch (1) Remove the parts inside the refrigerator compartment. (See procedure [1]) (2) Remove the left rail of the slide compartment.
  • Page 59 OPERATING PROCEDURE PHOTOS 7. Rotational heater board Photo 40 (1) Remove 4 fixing screws to remove the rotational heater board. (See photo 40) Screws (2) Remove a screw on the wiring cover and disconnect the con- Wiring cover nector in the cover. (See photo 40) Screw (Wiring cover) Caution on assembly...
  • Page 60 OPERATING PROCEDURE PHOTOS Photo 42 9. Compressor cover Elect cover Control board Screws Drain pan Reactor Box fan Compressor cover (1) Remove 8 screws for compressor cover at the back of the refrigerator. (See photo 42) Compressor Elect cover cover (2) Remove the fixing screws (3 screws) and the rivet (1 rivet) on the elect cover on the back of the refrigerator.
  • Page 61 OPERATING PROCEDURE Figure 7 Piping connection of three-way valve Attach U washer as shown in the figure below. Outlet Inlet : This mark shows welded point. Three-way valve Charge pipe (Low pressure side) Reactor Dryer holder Charge pipe (High pressure side) E50: PEFI100E Dryer Box fan...
  • Page 62: Door Adjustment

    After adjusting the refrigerator compartment doors, confirm auto closer operation. HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Copyright 2010 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. New publication, effective Dec. 2010 Distributed in Dec. 2010 No. OAH110 7...

This manual is also suitable for:

Mr-e60r-f-cMr-e55r-ps-cMr-e60r-ps-c

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