TCM FB-8 Series, Service Manual

Page: 231 / 259

- 69 -
3. TROUBLESHOOTING GUIDE
(4) The truck travels, but does not gain speed.
75(WL)
0 V
5 V
Is the “turtle” mark
invisible?
LCD panel
CN9-1-16
“Turtle” mark
invisible
Switch panel
In maintenance mode:
A (Accelerator 1
potentiometer output
voltage)
B (Accelerator 2
potentiometer output
voltage)
A: Below 3.1 V
B: Below 1.5 V
• Accelerator
• LY93, LG92
3.1 V or more
In maintenance mode:
D (Steering potentiometer
output voltage)
Drive motor inverter
2.4 to 2.7V
Other than
2.4 to 2.7 V
• Steering angle potentiometer
• YL43
• Adjust the neutral position
of the wheels.
Key switch ......................... Turn it ON.
Key switch ............... Turn it ON.
F/R lever .......... Shift into F or R.
Parking brake lever ....... Release.
Accelerator pedal ...... Press fully.
Key switch ............... Turn it ON.
Wheels .. Set them straight ahead.
Key switch .. Turn it ON.
Turtle button ...........Press.
Turtle
mark
visible
LCD panel