Ryobi RYRM8006 Troubleshooting Manual
  1. Manuals
  2. Brands
  3. Ryobi Manuals
  4. Lawn Mower
  5. RYRM8006
  6. Troubleshooting manual
Ryobi RYRM8006 Troubleshooting Manual

Ryobi RYRM8006 Troubleshooting Manual

80v tractor mower
Hide thumbs Also See for RYRM8006:
Table of Contents

Advertisement

Quick Links

Download this manual
Models RYRM8006 / RYRM8007
80V Tractor Mower
Troubleshooting Guide
Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RYRM8006 and is the answer not in the manual?

Questions and answers

Richard Sheppeck
July 3, 2025

Ryobi 80V 42" lawn tractor. LCD was working last year, not used over winter and now nothing is displayed on the LCD screen how to troubleshoot?

0

Related Manuals for Ryobi RYRM8006

Summary of Contents for Ryobi RYRM8006

  • Page 1 Models RYRM8006 / RYRM8007 80V Tractor Mower Troubleshooting Guide Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

  • Page 2: Table Of Contents

    Table of Contents • Mower Overview ……..………………………………. 5 • Beep Diagnostic Codes …………….……………… 34 • Brushless Motors ……………………………………. 6 • Testing Blade Motor Controller ……………………. 35 ……….………………………. 36 • Digital Multimeter (DMM) .……..…………………… 7 • Testing Deck Motors • Component Locations …………………....
  • Page 3 < Return to Table of Contents Warning THIS MATERIAL IS INTENDED ONLY FOR TECHNICIANS TRAINED IN ELECTRICITY! Technicians should wear personal protective equipment, such as rubber gloves, safety glasses, and hearing protection. Dangerous voltages / currents are present. EXERCISE CAUTION AT ALL TIMES! This guide assumes knowledge of basic electrical equipment such as DMM (Digital Multi Meter) to measure voltage, current, resistance, continuity, and diodes.

  • Page 4: Using This Document

    < Return to Table of Contents Using this Document • Any blue text can be clicked on to jump directly to the page of that topic. (This document is also printer-friendly, so you can have it in front of you while servicing the mower.) If you print this document, we recommend printing it in landscape mode and in color •...

  • Page 5: Mower Overview

    < Return to Table of Contents Mower Overview The RYOBI Tractor is completely electrical, consisting of 3 (42”) and 4 (46”) brushless motors (one for each blade and one for transaxle) and a controller for each motor. RYRM8006 RYRM8007 OP801720...

  • Page 6: Brushless Motors

    < Return to Table of Contents Brushless Motors Overview Brushless motors operate quite differently than brushed motors with which you may be used to working. (e.g., a starter motor). A brushed motor, like the one pictured to the right, can be quickly tested by applying voltage to the two terminals.

  • Page 7: Digital Multimeter (Dmm)

    < Return to Table of Contents Digital Multimeter (DMM) A DMM is a standard diagnostic tool that serves as a voltmeter, ammeter, and ohmmeter. We use this tool for various tests throughout this guide. Ω VOLTAGE is potential RESISTANCE is the A DIODE is a device that energy.

  • Page 8: Component Locations

    < Return to Table of Contents 80v Troubleshooting Guide COMPONENT LOCATIONS Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...
  • Page 9 < Return to Table of Contents Component Locations RYRM8060 42” Tractor RYRM8070 48” Tractor Headlights Control Panel Seat Switch under seat Drive Controller LCD Panel Display DC-DC Converter, Brake Switch Main Relay, under hood Charging Port Blade Controllers Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...
  • Page 10 < Return to Table of Contents Batteries Locations RYRM8060 42” Tractor Mower RYRM8070 46” Tractor Mower DC-DC Converter, Main Relay, Front of unit under hood 80v Batteries Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

  • Page 11: Tic Connections

    < Return to Table of Contents TIC Connections Pre-Charge Line The TIC has 2 connections to the mower. Main TIC Connector HELPFUL TIP There are 2 yellow tabs in the Pre-Charge Line Connectors. These can fall out during repair. Make sure they are reinserted correctly if they do fall out.

  • Page 12: Control Panel

    < Return to Table of Contents Control Panel Cruise Reverse Mow Option Control (RMO) Switch Blade Power Switch LCD Screen Key Switch a.k.a. “PTO” Switch Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

  • Page 13: Controller Locations

    < Return to Table of Contents Controller Locations RYRM8060 42” Tractor Mower RYRM8070 46” Tractor Mower Deck Motor Drive Motor Controllers* (2) Controller *NOTE The RYRM8070 has (3) Deck Motor Controllers, not (2) Additional Note: Color of controller housing/casing may vary; typically, between black, gray, and white. Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...
  • Page 14 < Return to Table of Contents 80v Troubleshooting Guide DIAGRAM Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

  • Page 15: Block Diagram And Control Flow

    < Return to Table of Contents Block Diagram: Control Flow 5V out Batteries Head Lights 80V to 12V Seat Relay Transducer DCDC switch Fuse Converter Switch Enable Brake Charge Port Switch Primary Blade Blade Drive Control Control Controller Beeper Motor Motor Motor Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

  • Page 16: Troubleshooting

    < Return to Table of Contents 80v Troubleshooting Guide TROUBLESHOOTING Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

  • Page 17: Troubleshooting Introduction

    < Return to Table of Contents Troubleshooting: Introduction A service person who has spent many years working on gas mowers may feel uneasy when working on the new generation of electric mower. If this sounds like you, fear not, you’re not alone.
  • Page 18 3. Release the Parking Brake. 4. Turn Main Power Key to the ON position. 5. The LCD Screen should display the RYOBI logo followed by the user interface. 6. Pull PTO knob up. The Blade Motors should run. 7. Push the PTO knob down and ensure Blade Motors stop.

  • Page 19: Troubleshooting: Basic

    < Return to Table of Contents Troubleshooting: Basics • Follow the Block Diagram on the previous page. • CHECK FOR LOOSE AND/OR BAD CONNECTIONS. • Test the easiest components first, such as Power, Key Switch, DC-DC Converter, etc. • Mower should be fully charged, if possible. •...

  • Page 20: Troubleshooting: Detailed

    < Return to Table of Contents Troubleshooting: Detailed Use the block diagram as a guide. Also refer to the beep diagnostic code chart. 1. Test Charger by plugging it into the Charging Port on the mower and checking if batteries charge. a.
  • Page 21 < Return to Table of Contents Troubleshooting: Detailed Use the block diagram as a guide. Also refer to the beep diagnostic code chart. 4. Check if the mower will drive. If not, check the following, in order, testing drive function after each step: a.

  • Page 22: No Power To Mower

    < Return to Table of Contents No Power to Mower • LIKELY CAUSES: 80v Batteries; TIC (Main Relay doesn’t click) • Testing Steps: (check function after each step) 1. Turn mower off 2. Unplug all 80v Batteries 3. Insert (1) battery and attempt to turn mower on 4.

  • Page 23: Mower Drive Non-Functional

    < Return to Table of Contents Mower Drive Non-Functional • LIKELY CAUSES: Drive Motor Controller (Mower will turn on) (Especially if mower beeps every once every two seconds when trying to drive) • Testing Steps: (check function after each step) Drive Motor Controller 1.
  • Page 24 < Return to Table of Contents Park / Neutral Light Malfunction • LIKELY CAUSES: Drive Motor Controller • Testing Steps: (check function after each step) Parking Brake Indicator 1. Ensure connections and wiring are secure Check Brake Switch connection b. Check Neutral Switch connection Check LCD Panel connection 2.

  • Page 25: Checking Fuses

    < Return to Table of Contents Checking Fuses • Testing DC-DC Convertor Fuse (4A Automotive) IMPORTANT: If fuse is blown, find source of problem before replacing the fuse. • Testing Steps: 1. Remove rubber cap DC-DC Convertor Fuse Testing Points 2.

  • Page 26: Testing Headlight Assembly

    < Return to Table of Contents DC-DC Convertor / Headlights • Testing DC-DC Convertor • Testing Steps: DC-DC 1. Power mower on Convertor 2. Set DMM to DC Volts 3. Check for ~80v between the and BLACK wires 4. Check for ~12v between the BLUE YELLOW wires...

  • Page 27: Charging Port

    < Return to Table of Contents Charging Port • Testing Charging Port • Testing Steps: 1. Plug Charger into the mower while 80v batteries are installed 2. Check the LCD Display for charging status If LCD Display doesn’t power on, check connections to LCD Display If connections are secure, but LCD Display doesn’t power on, replace LCD Display b.
  • Page 28 < Return to Table of Contents 80v Batteries • Testing 80v Batteries (in mower) • Testing Steps: 1. Press the indicator button on each battery and check its readout If you receive E:01, allow battery to cool to room temperature naturally b.
  • Page 29 < Return to Table of Contents 80v Batteries • Testing 80v Batteries (outside mower) • Testing Steps: 1. Press the indicator button on each battery and check its readout If you receive E:01, allow battery to cool to room temperature naturally b.
  • Page 30 < Return to Table of Contents 80v Charger • Testing 80v Charger • Testing Steps: 1. Plug in the charger without a battery (unplugging and plugging back if already plugged in) and check the charger indicator light If SOLID RED, the charger is working normally b.

  • Page 31: Testing Blade (Pto) Switch

    < Return to Table of Contents Blade Power (PTO) Switch • Testing Blade Power (PTO) Switch • Testing Steps: 1. Disconnect main power from mower 2. Set DMM to Resistance 3. Test for continuity at the points indicated With the switch pulled out (closed), you should get very low resistance or Continuity b.
  • Page 32 < Return to Table of Contents Key Switch / USB Port • Testing Key Switch (operates at 12v) • Testing Steps: (Wires Connected) 1. Set DMM to DC Voltage 2. Measure Voltage between the two wires going into switch With the switch set to OFF, you should get approximately 12v b.

  • Page 33: Testing Beeper

    < Return to Table of Contents Seat Switch / Beeper • Testing Seat Switch • Testing Steps: Seat Switch 1. Power mower off 2. Set DMM to Resistance 3. Disconnect Seat Switch connectors 4. Test for continuity across input terminals With the switch pushed down, you should get very low resistance or Continuity b.

  • Page 34: Beep Diagnostic Codes

    < Return to Table of Contents Beep Codes EXAMPLE ERROR CODE: A0 0000000 BEEP # DESCRIPTION CHECK IF NOT SOLVED… Wiring and connections; Short Reverse ensure solid connection and Replace angular transducer Replace Drive Motor Controller beep no loose wires Pedal out of Center Check angular transducer Check pedal assembly...
  • Page 35 < Return to Table of Contents Deck Motor Controllers • Testing Deck Motor Controller • Testing Steps: (resistance of output) 1. Set DMM to Resistance 2. Test for continuity between any two terminals Typical resistance should be roughly 142K Ohms 3.

  • Page 36: Testing Deck Motors

    < Return to Table of Contents Deck Motors • Testing Deck Motors • Testing Steps: 1. Set DMM to Resistance 2. Test for continuity between any two pins 3. Test for continuity between other pins 4. Measurements should be nearly identical a.

  • Page 37: Testing Drive Motor Controllers

    < Return to Table of Contents Drive Motor Controller • Testing Drive Motor Controller • Testing Steps: (resistance of output) 1. Set DMM to Resistance 2. Test for continuity between any two terminals 3. Test for continuity between other terminals 4.

  • Page 38: Testing Drive Motors

    < Return to Table of Contents Drive Motors / Hall Sensor • Testing Drive Motors • Testing Steps: 1. Unbolt heavy phase wires from Drive Motor Controller 2. Set DMM to Resistance 3. Test for resistance between heavy GREEN & YELLOW wires 4.

  • Page 39: Testing Brake Switch

    < Return to Table of Contents Brake Switch • Testing Brake Switch • Testing Steps: 1. Set DMM to DC Volts 2. Disconnect Brake Switch connector & BLACK terminals on 3. Measure between mating connector of the harness Nominal voltage should be 3.2v when plunger depressed and 0v when plunger released •...

  • Page 40: Relay Overview

    < Return to Table of Contents Relay Overview A Relay consists of an electromagnet and a Relay switch operated by the electromagnet within a single package. When 12v is supplied to the two small terminals on the left of the relay, it causes the switch to close and supply 80v to the mower.

  • Page 41: Testing Main Relay

    < Return to Table of Contents Main Relay • Testing Main Relay • Testing Steps: 1. Power the mower on. 2. You should hear an audible “click” as the Main Relay activates 3. Set DMM to DC Volts 4. Measure between terminals Nominal voltage between small terminals (under black caps) should be ~12v Testing points for Step 4B...

  • Page 42: Lcd Display

    < Return to Table of Contents 80v Troubleshooting Guide LCD DISPLAY Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

  • Page 43: Main Dashboard

    < Return to Table of Contents Main Dashboard Parking Brake Headlight Bluetooth Indicator Indicator Indicator Drive Speed Blade Speed Indicator Indicator Battery % Screen Tabs Charging Mode Indicator Bluetooth Lights Blade Speed Drive Speed After booting up/powering on, defaults to Main Dashboard. After 20s of no inputs, GUI will default to Main Dashboard.
  • Page 44 < Return to Table of Contents Error Code Interface Main Dashboard Error Code History To return to the Main Dashboard, press If you press and hold the Mode Button for 10s, the Error Code and hold the Mode Button for 10s. The History is accessed.

  • Page 45: Error Codes

    < Return to Table of Contents Error Codes EXAMPLE ERROR CODE: A0 0000000 INDICATOR CODE KEY CODE MEANING Drive Controller data0 Drive Controller data1 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 This INDICATOR CODE shows the area where Drive Comm Timeout (11111111) The BIT CODE indicates the error(s).
  • Page 46 < Return to Table of Contents Error Codes INDICATOR CODE MEANING MEANING NOT USED Over-voltage protection NOT USED NOT USED Drive Controller data1 CPU self-test failure Primary & Secondary self-test fault AD acquisition failure Accelerator failure Undervoltage protection (primary) Overvoltage (primary) Temperature protection (primary) Blocking protection (primary) Deck Controller data0...
  • Page 47 < Return to Table of Contents Error Codes (continued) INDICATOR CODE MEANING MEANING Seat Switch is not closed PTO switch is not closed Error with the seat and PTO logic F gear Deck Controller data2 R gear RMO enable flag NOT USED NOT USED Undervoltage protection (secondary control 1)
  • Page 48 < Return to Table of Contents Error Codes (continued) INDICATOR CODE MEANING MEANING Undervoltage protection (secondary control 2) Overvoltage protection (secondary control 2) Temperature protection (secondary control 2) Stall protection (secondary control 2) Deck Controller data5 Motor out of step (secondary control 2) Low speed protection (secondary control 2) MCU self-test fault (secondary control 2) NOT USED...

  • Page 49: Update Log

    < Return to Table of Contents Update Log 8.26.23 Created (GAW) 8.30.23 Minor visual update (MLB) 9.5.23 Beep codes updated (GAW) Confidential and Proprietary - Property of Techtronic Power Equipment - DO NOT COPY or DISCLOSE...

This manual is also suitable for:

Ryrm8007

Table of Contents