©Copyright Task Force Tips, Inc. 2008-2014
LIY-500 May 12, 2014 Rev10
46
5.0 TROUBLESHOOTING
For online service information updates, go to:
www.tft.com/customerservice/FAQ.cfm Click on Remote Control Monitors.
NOTICE
FAILURE TO DISCONNECT POWER BEFORE REMOVING CIRCUIT BOARDS WILL RESULT IN
DAMAGE AND VOID WARRANTY.
SYMPTOM
POSSIBLE CAUSE
REMEDY
No Power LED
Polarity reversed
Check wiring and reverse polarity
Power LED On But No
Operation
Low voltage due to:
- wire gauge too small
- wire length too long
- poor connection
- inadequate apparatus electrical system
Check connections and wiring per Remote Control (RC)
Monitor Electrical Controls Supplemental Instructions.
Verify voltage is above 9 volts.
Monitor Disable Interlock turned on
Raise TFT RC Extend-A-Gun
Operation only from monitor
operator station. PARK, &
OSC LED’s on remote station
blink slowly when button
pressed
Incorrect wiring
Check blue/white communication wiring
Bad communication board
Replace communication board in monitor. If problem
persists, replace communication board in remote
operator station.
Monitor will not operate from
any station and PARK & OSC
LED’s on monitor are on
solid.
Bad communication board
Replace communication board in monitor.
During PARK pattern, monitor
stops and PARK LED stays
on solid.
Monitor has hit an obstruction before end
of travel is reached.
Remove obstruction and run PARK pattern again.
Manual override knob has been moved
with power off.
Move monitor axis to each end stop making sure motor
current limits. Run PARK pattern again.
Operation only from monitor
control station
Communication board code version
incompatible
Verify code versions on monitor and all operator
stations
One Axis Fails To Operate
From Any Control Station
Loose motor wiring connection
Check axis motor connection
Bad motor control board
Interchange motor control boards and check if problem
persists with same axis, If not, replace motor control
board.
Bad motor
Interchange motor control boards. Check if problem
persists with same axis, If yes, replace motor.
Bad membrane switch
Replace membrane switch / operator station
Vertical/Horizontal axis will
not speed up
Loose encoder wiring connection
Check axis encoder connection
Bad motor encoder
Interchange motor control boards. Check if problem
persists with same axis. If yes, replace motor.
Remove encoder cover and check for RED light just
below disk. If no light, encoder is bad. Replace motor.
Vertical/Horizontal axis runs
only in fast speed
Loose encoder wiring connection
Check axis encoder connection
Bad motor encoder
Interchange motor control boards. Check if problem
persists with same axis. If yes, replace motor.
Remove encoder cover and check for RED light just
below disk. If no light, encoder is bad. Replace motor.
Vertical/Horizontal axis only
runs ~5 seconds and then
stops.
Loose encoder wiring connection
Check axis encoder connection
Bad motor encoder
Interchange motor control boards. Check if problem
persists with same axis. If yes, replace motor.
Remove encoder cover and check for RED light just
below disk. If no light, encoder is bad. Replace motor.
PARK & OSC LED’s on
monitor control station blink
rapidly when button pressed.
Loose encoder wiring connection
Check axis encoder connection
Bad motor encoder
Interchange motor control boards. Check if problem
persists with same axis. If yes, replace motor.
Remove encoder cover and check for RED light just
below disk. If no light, encoder is bad. Replace motor.