Multiquip MVH-702DRSC manual Engine Troubleshooting

MVH-702DRSC —TROUBLESHOOTING

TABLE 7. ENGINE TROUBLESHOOTING

SYMPTOM	POSSIBLE PROBLEM	SOLUTION
The main switch of machine body is	Defective battery?	Charge or replace battery.
	Main switch not working?	Repair or replace main switch.
switched on, but no electricity is
available (monitoring lamps 9, 10, and	Cell/crank start switch not working?	Repair or replace cell/crank switch.
12 are not lighted on the control unit)
	Control unit circuit board broken?	Repair or replace control unit circuit board.
	Low charge of transmitter battery?	Charge battery.
The main switch of the transmitter is
	Faulty main transmitter switch?	Repair or replace transmitter main switch.
switched on, but the engine does not
	Transmitter circuit board broken?	Repair or replace transmitter circuit board.
start (signal lamp of transmitter does
not light.)	Tansmitter infra-red lamp covered with dust?	Wipe lamp with clean cloth. If very dirty, use mild soap
		or cleaner to remove dirt.
The main switch of the transmitter is
switched on, but the engine does not		Make sure remote control cable is properly connected.
start (signal lamp of transmitter lights	Remote control cable not properly connected?
		Check and correct any possible short circuits.
but monitoring lamp no. 8 on control
unit does not light.)
The main switch of the transmitter is	Cell motor/relay of engine burned?	Reposition throttle lever to RUN position.
switched on, but the engine does not
start (signal lamp of transmitter does	Control unit circuit board burned?	Replace fuel filter.
not light and monitoring lamp no. 8 on
	Main battery power too low?	Charge or replace battery
control unit does not light.)
he main switch of the transmitter is	Failed engine fuel solenoid?	Repair or replace fue solenoid.
switched on, the engine starts but then
		Make sure wire harness is connected properoy and
stops (signal lamp of transmitter does	Disconnected or short-circuited wire harness?
		correct any short circuits.
not light and monitoring lamp no. 8 on
control unit does not light.)	Need restart?	Refer to Restarting Engine section of this manual.
Engine starts but no vibration starts	Vibration switch on transmitter does not work?	Repair or replace switch.
(vibration switch is on, but monitoring
lamp no. 6 of control unit does not	Failure of transmitter circuit board?	Repair or replace circuit board.
light.)
	Failure of control unit circuit board?	Repair or replace circuit board.
Engine starts but no vibration starts
		Make sure wire harness is connected properoy and
(vibration switch is on and monitoring	Disconnected or short-circuited wire harness?
		correct any short circuits.
lamp no. 6 of control unit lights.)
	Failure of vibration solenoid of valve unit?	Repair or replace solenoid.
	Broken joystick lever?	Repair or replacejoystick lever.
Machine vibrates but does not travel	Failure of transmitter circuit board?	Repair or replace circuit board.
(monitoring lamp and joystick lever of
	Disconnected or short-circuited wire harness?	Make sure wire harness is connected properoy and
transmitter are not working.)
		correct any short circuits.
	Failure of control unit circuit board?	Repair or replace circuit board.
	Failure of vibration solenoid of valve unit?	Repair or replace solenoid.
Machine vibrates but does not travel
		Make sure wire harness is connected properoy and
(monitoring lamp and joystick lever of	Disconnected or short-circuited wire harness?
		correct any short circuits.
transmitter are working.)
	Failure of vibrator unit?	Repair or replace vibrator unit.

PAGE 28 — MQ-MIKASA MVH-702DRSC COMPACTOR — PARTS & OPERATION MANUAL — REV. #1 (12/17/03)