Section 3. Systems Overview
Model 4700 Maintenance Manual
Alternative LEARN
Alternative LEARN When FlashWare is not available, learning pots and changing battery voltage can be done using the LPH and Performance Reduction (Turtle) buttons on the truck steering column. NOTE: In this procedure, the LPH button can be considered an ENTER button and the performance Reduction (Turtle) button can be considered a TOGGLE button to change selections. Six selections are available with this procedure: Ld (Learn drive), LL (Learn lift), Learn Right Steer position*, Learn Left Steer position*, Learn Center Steer position*, which are indicated by the steer position LEDs, and Lb (Learn battery). *Applies to dual traction motor trucks only.
Read and understand this procedure thoroughly. Values can be mislearned and the lift truck can move if these procedures are not performed correctly. If, while learning the traction pot, the parking brake is not set or the directional control is not in neutral, the truck will travel. While learning the lift pot, the carriage will lift. Make sure there are no overhead obstructions. With the key switch ON, sitting in the seat, parking brake engaged, and the travel directional lever in neutral, do the following:
Enter Learn Mode 1. Press the LPH and Turtle buttons at the same time and release. 2. Press the Turtle button and release. 3. Press the LPH and Turtle buttons at the same time again and release.
5. Press the LPH and Turtle buttons at the same time again and release. A flashing “n” should be displayed and the Battery Charge Indicator LEDs will flash. 6. Press the Turtle button and release. A flashing “y” should be displayed and the Battery Charge Indicator LEDs will flash. 7. Press the LPH button and release. (Learn mode is now accessed.) “Ld” should now be flashing on the display. Press the Turtle button to toggle between selections.
Model 4700 with Software Lower than V2.9 1. Press the LPH and Turtle buttons at the same time and release. 2. Press the Turtle button and release. 3. Press the LPH button once and release. A flashing “n” should be displayed and the Battery Charge Indicator LEDs will flash. 4. Press the Turtle button and release. A flashing “y” should be displayed and the Battery Charge Indicator LEDs will flash. 5. Press the LPH button and release. (Learn mode is now accessed.) “Ld” should now be flashing on the display. Press the Turtle button to toggle between selections.
Learn the Traction Potentiometer
The parking brake must be engaged and the travel directional lever must be in neutral or the truck will travel. 1. While in Learn mode with “Ld” flashing (Ld = Learn drive), press and release the LPH button. A solid “Ld” should be displayed and the Battery Charge Indicator LEDs will flash. 2. Depress and hold the traction forward pedal (on dual pedal trucks) or traction pedal (on single pedal trucks).
4. Press the LPH button once and release.
3-8
Publication 1160093, Issued: 20 May 2013
