Husqvarna Automower 305 Workshop Manual
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Husqvarna Automower 305 Workshop Manual

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Workshop manual
Husqvarna Automower
305
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Summary of Contents for Husqvarna Automower 305

  • Page 1 Workshop manual Husqvarna Automower ®...

  • Page 2: Table Of Contents

    Contents 1 Introduction 6 Repair instructions 1.1 Document description..........3 6.1 Product overview..........17 1.2 Servicing tools............3 6.2 To mount screws..........17 1.3 Technical data............3 6.3 To remove and install the top cover..... 18 6.4 To remove and install the body......18 6.5 To remove and install the upper chassis .....19 2 Safety 6.6 To replace the rear bumper........20...

  • Page 3: Introduction

    1 Introduction 1.1 Document description The Workshop manual is intended for dealers and service personnel, and is a supplement to the Operator’s Manual. The following system is used in Workshop manual to make it easier to use: italics is a text that is shown on the •...

  • Page 4: Safety

    2 Safety 2.1 Safety definitions 2.3.3 Battery safety Warnings, cautions and notes are used to point out WARNING: Lithium-ion batteries can explode or specially important parts of the manual. cause fire if disassembled, short-circuited, exposed to water, fire, or high temperatures. WARNING: Used if there is a risk of injury or Handle carefully, do not dismantle, open the death for the operator or bystanders if the...
  • Page 5 The chassis contains components which are sensitive to electrostatic discharge (ESD). The chassis must also be resealed in a professional manner. For these reasons the chassis shall only be opened by authorized service technicians. A broken seal can result in the entire or parts of the guarantee no longer being valid.

  • Page 6: Product And Installation

    3 Product and installation 3.1 Main components for installation 3.4 Boundary loop The robotic system involves 4 main components: The strength of the A signal varies depending on the distance. The strength of the signal is high close to the •...

  • Page 7: Charging Station

    3.7 Circuit boards and sensors always goes from the guide wire to the left in the connection between guide wire and boundary loop. The circuit boards and sensors in the product: The strength of the guide signal varies like the A signal depending on the distance to the guide loop.

  • Page 8: To Do A Test Of The Installation

    3.10 Safe operation in slopes 3.7.4 STOP sensor There is a magnet and a Hall sensor that detects if the The product adjusts its operation automatically based on STOP button is pushed down. If the STOP signal is factors such as the slope angle and travel direction. indicated, the product and the blade disc stop If the slope is too steep, the product moves rearwards immediately and the hatch is released.

  • Page 9: Special Menus

    4 Special menus 4.1 Tools menu overview Tools History, trip Test Special settings Info History, total Calibrate General Key data Wheel Key data Motors Guide Override motor calibration loop Battery Search Reset trip detection Blade times values Tilt sensor Loop motor Demo calibration...

  • Page 10: Tools Menu (Expert Mode)

    4.4.1.2 Tools - Info - Battery Note: The product will operate as usual with the Tools - Info - Battery menu shows: hatch open. Voltage : The voltage level of the battery. About 20.5 • 4. Push the STOP button to stop the product. V indicates a fully charged battery and about 17 V indicates a flat battery.
  • Page 11 4.4.2 Tools - History, total blocked. The serial number of the communication circuit board is not registered on Husqvarna server. Replace the communication 4.4.2.1 Tools - History, total - Key data circuit board. The Tools - History, total - Key data menu shows: SIMs : Data is not transmitted.
  • Page 12 Efficiency : How much of the total operating time that Wheel motor : • • Efficiency is the the product has mowed the lawn. 1. Lift the product so that the drive wheels are off mowing time divided by the charging time + running the ground.

  • Page 13: Quick Info (Limited Tools Menu)

    4.4.5 Tools - Special settings 4.5.3 Quick info - Advanced Quick info - Advanced menu shows: Tools - Special settings contains settings that Note: The are only available for service personnel. Automatic passage handling : The guide corridor • Auto passage width is adjusted automatically.

  • Page 14: Autocheck Service Tool

    5.2 To connect the product Autocheck 3 is a PC tool developed for the service of the robotic lawn mowers from Husqvarna Group. It is a 1. Remove the service plug. tool for troubleshooting as well as a database of sold products and service history.

  • Page 15: Programming Circuit Boards

    Firmware • 5.3.6 Log book Actions • Log book contains the Fault memory where, for Log book • example, the product's error codes can be found. • Documents Additional Log book functions are continuously implemented. Customers • 5.3.7 Documents 5.3.1 Home When a product is connected to Autocheck, only the When the product is connected to Autocheck an relevant technical documentation for that model is...
  • Page 16 5.4.3 Programming a new main circuit board If the main circuit board is replaced, the new main circuit board must be programmed. The main circuit board includes information about the product’s serial number. Note: A new main circuit board may for safety reasons only be assigned one serial number which is never changed.

  • Page 17: Repair Instructions

    6 Repair instructions 6.1.3 The lower chassis This chapter describes how to repair and change spare parts. Refer to the Illustrated parts list (IPL) at the The lower chassis is structured mechanically around the manufacturer's support website. modules that follow: 1.

  • Page 18: To Remove And Install The Top Cover

    Note: Read the section about how to mount screws in CAUTION: Clean dirt and grass from the plastic before starting any maintenance. Refer to product before you remove the parts. mount screws in plastic on page 33 . 1. Remove the top cover. Refer to To remove and install the top cover on page 18 .

  • Page 19: To Remove And Install The Upper Chassis

    6.5 To remove and install the upper chassis 5. Remove the warranty seal at the point of separation between the chassis halves on the right side. To remove and 1. Remove the top cover. Refer to install the top cover on page 18 . To remove and install 2.

  • Page 20: To Replace The Rear Bumper

    6.6 To replace the rear bumper 11. When you connect the cables make sure to put the cables in the cable holders. To put the cables into To remove and install 1. Remove the body. Refer to position in the lower chassis: the body on page 18 .

  • Page 21: To Replace The Keypad

    3. Lift up the front body suspension parts by using a 6. Peel off the keypad from the display cover. small flat screwdriver. Pull the screwdriver gently backwards. 7. Remove the keypad and thread the cable out through the hole. 8.

  • Page 22: To Replace The Stop Button

    4. Push the clips inwards and lift up to remove the 3. Pull out one side of the stop button. support. 4. Pull the STOP rearward to remove it. 5. Remove the damaged ventilation filter. 5. Install in the opposite sequence. 6.

  • Page 23: The Circuit Boards And Sensors

    6.13 The circuit boards and sensors 5. Open the hatch and bend it over. These are the circuit boards in the product: 6. Remove the hatch. 1. Main circuit board (tilt sensor) 2. HMI circuit board 3. Rear sensor circuit board (rear loop sensor and stop sensor) 4.
  • Page 24 it back to the product again when the main circuit board 8. Push to detach the 2 clips and pull up. has been replaced. 1. Connect the product to Autocheck before replacing the main circuit board. The operating data is then saved automatically.
  • Page 25 ® This is available as accessory for Automower 305. ® Note: The communication circuit board for Husqvarna contains an e-SIM. For some markets instead a separate SIM card is used. To remove and 1. Remove the top cover. Refer to install the top cover on page 18 .
  • Page 26 b) Connect the cable between the HMI circuit board 6.13.4 To replace the SIM card and the communication circuit board and use the For communication circuit boards that have a separate cable holder in the lower chassis. SIM card and not an e-SIM. ®...

  • Page 27: The Battery System

    the charging plate installation must be replaced. Refer to 6. Push to detach the 2 clips and pull up. To replace the charging plates on page 28 . To remove and 1. Remove the top cover. Refer to install the top cover on page 18 . To remove and install 2.
  • Page 28 6.14.1 To replace the battery 6. Push to detach the clips and lift up the battery holder. To remove and 1. Remove the top cover. Refer to install the top cover on page 18 . To remove and install 2. Remove the body. Refer to the body on page 18 .

  • Page 29: The Cutting System

    3. Remove the screw for the holder of the charging 5. Disconnect the blade motor cable from the main plates. circuit board. 6. Remove the motor cable from the main circuit board. 7. Remove the 3 screws that holds the skid plate. 4.

  • Page 30: Wheels And Wheel Motors

    Accessories > Terrain kit 12. Remove the sealing strip, the cable gland and the 2 wheel motor. Enter the menu screws for the cutting module. and enable Terrain kit. 1. Remove the hub cap. 13. Lift up and remove the cutting system. 14.

  • Page 31: Charging Station

    6. Remove the 4 screws for the wheel motor. 3. Insert the wheel brush in the slot from the underside in an angle and push it down into place. 7. Remove the wheel motor. 8. Install the new wheel motor. 9.
  • Page 32 5. Carefully lift the charging cover forward and upward 3. Push the 2 clips to remove the circuit board. from the charging tower. 6. Disconnect the charging cable. 7. Remove the 4 screws from underneath the 4. Attach the new circuit board. baseplate to remove the charging tower.

  • Page 33: To Mount Screws In Plastic

    3. Remove the contact plates (A) and the springs (B). To ensure the threads in plastic parts are not damaged: 1. Carefully turn the screw counter-clockwise until it engages the existing threads in the plastic. The screw will fall slightly by itself when the threads are located correctly in relation to the existing threads in the plastic.

  • Page 34: To Replace The Sealing Strips

    3. Make sure the plug is screwed in completely so that 3. Lay the other end of the sealing strip above the first a good seal is obtained. end and then out of the channel. Fasten the sealing strip in the retainer. CAUTION: Tighten by hand so as not to damage the plastic.

  • Page 35: Service

    7 Service 7.1 Service schedule The table below contains a checklist of points and actions to be taken when servicing the product. Action Explanation Firmware on page 15 . Firmware update Refer to If firmware is available in Autocheck, update the product with the newest firm- ware.

  • Page 36: Screw Fasteners

    Action Explanation Cleaning Clean the charging station by using a wet brush and/or a moist cloth. Charging plates Polish contact surfaces on both the product and the charging sta- Examine and polish the charging plates on the product and the charging plates tion with a fine grade emery cloth.

  • Page 37: Troubleshooting

    8 Troubleshooting 8.1 Messages The table below contains fault and information messages which can appear in the product. There are references to menus in the product, but Autocheck can also be used in many cases. Note: Refer to the Operator's manual for more information about how to rectify errors. Messages Number Message...
  • Page 38 Messages Number Message Cause Action MOTORS 20/21 Wheel motor blocked, Grass or other object has wrapped Check the drive wheel and remove any right/left around the drive wheel. objects. 22/23 Wheel drive problem, The wheel motor is faulty. Check the function of the wheel motors right/left when idling.
  • Page 39 Messages Number Message Cause Action INSTALLATION No loop signal Boundary wire broken. Check the signal given by the LED on the charging station. If the LED indi- cates a break in the boundary wire, find out where the break is. Replace the damaged section of the loop with a new loop wire and splice using an origi- nal coupler.
  • Page 40 Messages Number Message Cause Action INSTALLATION Trapped The product is stuck in a small area be- Check if there are any obstacles which hind a number of obstacles. make it hard for the product to move on from this location. Mower lifted The lift sensor has been activated due Free the product and rectify the reason.
  • Page 41 Messages Number Message Cause Action INTERNAL DIAGNOSTICS No message Indicates that no message is stored. Loop sensor problem, The cabling to the sensor circuit board Check the cabling and refit the cable or front is faulty or has come loose. replace if necessary.
  • Page 42 Messages Number Message Cause Action INTERNAL DIAGNOSTICS Electronics problem Communication problems with the cut- Restart the product. ting system. Replace the main circuit board. Refer To replace the main circuit board on page 23 Update the firmware via Autocheck. Alarm! Mower shut Alarm has been activated as the prod- Adapt the security level of the product Security menu .
  • Page 43 Messages Number Message Cause Action INTERNAL DIAGNOSTICS Electronics problem Keypad problem. Make sure the cable between the HMI circuit board and the keypad is properly connected. To re- Replace the keypad. Refer to place the keypad on page 21 . Replace the HMI circuit board.

  • Page 44: Symptoms

    Messages Number Message Cause Action CHARGING STATION Charging station There is an object in the way of the Remove the object. blocked product preventing it from entering the charging station. The baseplate is bent. Ensure that the baseplate is placed on level ground.
  • Page 45 Note: Refer to the Operator's manual for more information about how to rectify errors. 8.2.1 Symptoms during mowing Symptom Cause Action Uneven mowing results The product works too few hours per day. Increase the working hours. Work area too large. Try to limit the work area or extend the working time.
  • Page 46 8.2.2 Symptoms during searching Symptom Cause Action The product runs, but the The product is searching for the charging This behaviour is normal and no action is blade disc does not rotate station. The blade disc does not rotate required. when the product is searching for the charging station.

  • Page 47: Loop Signal

    8.2.4 Symptoms during charging Symptom Cause Action Battery test to determine the Both the mowing and charging Low battery capacity. Perform a Auto test on times are shorter than usual battery’s capacity. Refer to page 15 . The product never leaves the The parking mode is activated.
  • Page 48 8.3.1 To troubleshoot the loop signal 8.3.1.3 Blue flashing light A blue flashing light is most likely a break in the Always start by checking the LED in the charging boundary loop. station. This usually provides a good indication of where troubleshooting should begin.

  • Page 49: To Find A Break In The Boundary Loop

    8.4 To find a break in the boundary loop perform a battery test in connection with the product’s normal operation or in connection with it having recently A break in the loop wire is normally due to physical been in operation. damage to the wire, e.g.

  • Page 50: Transportation, Storage And Disposal

    9 Transportation, storage and disposal 9.1 Transportation • Keep the product with all wheels on level ground during storage, or use an original wall hanger. The supplied Li-ion batteries obey the Dangerous Goods • If you keep the charging station indoors, disconnect Legislation requirements.
  • Page 51 1414 - 001 - Transportation, storage and disposal- 51...
  • Page 52 ORIGINAL INSTRUCTIONS We reserve the right to make changes without prior notice. Copyright © 2019 Husqvarna AB. All rights reserved. 114 21 74-26 www.husqvarna.com 2020-02-26...

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