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AB62 Work Platform - European

4-3

ROUBLESHOOTING

Section

4.1

4.1 T

ROUBLESHOOTING

DMR-30

ONTROLLER

There are two components to the DMR-30 system. A
DMT-30 transmitter in the upper control box transmits
inputs from the operator controls to the DMR-30
receiver in the lower control box. The DMR-30
receives the digital signal and commands the appro-
priate functions. A corresponding LED for each input
and output is added to the DMR30 -DMT-30 for eas-
ier diagnosis.
These LEDs correspond to wire position in the plugs
and acknowledge a signal on the wire. Using the
charts in figures 4-1 and 4-2, a signal or series of sig-
nals can be followed from switch to actuator to help in
determining the cause of a problem.
Four "blinking" diagnostic LEDs, located at the bot-
tom-center of the DMR-30, are labeled as to their
function and are also used for diagnostic purposes.
A. CPU LED: DMR-30 is powered up operating prop-
erly. Solid light indicates internal failure. Not lit when
no power input.
B. INPUT LED: Indicates an input from lower control
panel switches, including ignition switch. This LED
should flash with CPU LED.
C. OUTPUT LED: Indicates an output to boom or
drive functions. This LED flashes only when operat-
ing boom or drive functions from either controller.
D. BUSS LED: Indicates an input from the DMT-30
(upper controller). This LED should flash with CPU
LED and INPUT LED as the upper ignition must be
on to operate.

4.2 M

ACHINE

PERATION

Lower Control Box

Electrical Power Up

Both Emergency Stop Switches are pulled out.
Lower control box key switch in CHASSIS position.
Upper key ON.
BT1-03 chassis selected will be illuminated.
Other LEDs on DMR-30 that may be illuminated:
BT1-05 (tilt), BT2-01 (telescope interlock), BT1-11
(lift interlock #1), BT1-12 (lift interlock #2).

The CPU LED on the DMR-30 should be flashing on/
off. The BUSS LED on the DMR-30 should be flash-
ing on/off. The INPUT LED should be flashing ON/
OFF.

Engine Start

BT1-02 on DMR-30 (start) illuminated when operat-
ing start switch.
The hour meter should flash; BT4-08 (oil pressure
input) will illuminate while engine is running.

NOTE: If no oil pressure is detected, ignition sig-

nal is deactivated. Engine will not continue
to run.

Glow Plug

BT1-08 on DMR-30 illuminated. Glow plugs are auto-
matic.

Boom

Speed control knob in UPPER control box must be
turned past 5 to operate.

Boom Up

Function enable pushed.
LEDs on DMR-30 illuminated:
BT1-03 (chassis selected), BT2-04 (lift input), BT5-
09 (lift output to valve), BT6-12 (low flow output),
BT5-06 (throttle output).

Boom Down

Function enable pushed.
LEDs on DMR-30 illuminated:
BT1-03 (chassis selected), BT2-05 (boom down
input), BT6-04 (boom down output to valve), BT6-12
(low flow output), BT5-06 (mid throttle output).

Boom Riser Up

Function enable pushed.
LEDs on DMR-30 illuminated:
BT1-03 (chassis selected), BT2-02 (riser up input),
BT5-12 (riser up to valve output), BT6-10 (high flow
output to valve), BT5-06 (throttle output).

Riser Lower

Function enable pushed.
LEDs on DMR-30 illuminated:
BT2-03 (riser lower input), BT6-01 (riser lower out-
put), BT6-10 (high flow output to valve), BT5-06
(throttle output).

Boom Extend

Function enabled.
LEDs on DMR-30 illuminated: