4-3.5. General Checkout; 4-3.6. Adjustment - Big Joe PDBB-20-T12 Operation, Maintenance, Repair Parts List

4-3.5. General Checkout.

Carefully complete the following checkout procedure.
If you find a problem during the checkout, refer to
Paragraph 4-3.7. for further information.
The checkout can be conducted with or without the
handheld programmer (See Paragraph 4-3.2.). The
checkout procedure is easier with a programmer. Oth-
erwise, observe LED for codes.
CAUTION: Put the vehicle up on blocks to get the
drive wheel off the ground before begin-
ning these tests.
Turn the keyswitch off and make sure that
the brake is applied (brake switch open),
the throttle is in neutral, and the forward/
reverse switches are open.
Do not stand, or allow anyone else to
stand, directly in front of or behind the
vehicle during the tests.
1. If a programmer is available, connect it to the pro-
grammer connector.
2. Turn the keyswitch on. The programmer should
"power up" with an initial display, and the control-
ler's Status LED should begin steadily blinking a
single flash. If neither happens, check for continu-
ity in the keyswitch circuit and controller ground.
3. If you are using a programmer, put it into the diag-
nostic mode by pressing the "DIAGNOSTICS"
key. The display should indicate "No Known
Faults."
Release the brake by pulling down the control
arm into the operating position. The LED should
continue blinking a single flash and the program-
mer should continue to indicate no faults. If there
is a problem, the LED will flash a diagnostic code
and the programmer will display a diagnostic
message. If you are conducting the checkout
without a programmer, look up the LED diagnostic
code in Table 4-4.
When the problem has been corrected, it may be
necessary to cycle the brake in order to clear the
fault code.
4. With the brake released, select a direction and
operate the throttle. The motor should begin to
turn in the selected direction. If it does not, verify
the wiring to the forward/reverse switches, for-
901357
ward/reverse contactors, and motor. The motor
should run proportionally faster with increasing
throttle. If not, refer to Paragraph
5. If you are using a programmer, put it into the test
mode by pressing the "TEST" key. Scroll down to
observe the status of the forward, reverse, brake,
emergency reverse, and mode switches. Cycle
each switch in turn, observing the programmer.
Each input should show the correct state on the
programmer.
6. Check the controller's fault detection circuitry as
described in paragraph
7. Take the vehicle off the blocks and drive it in a
clear area. It should have smooth acceleration
and good top speed.
8. Test the plug braking of the vehicle. Verify that the
plug braking option is as desired (variable or
fixed).
9. Verify that all options, such as high pedal disable
(HPD), static return to off (SRO), and anti-
tiedown, are as desired.
10. Check to see whether the emergency reverse
(belly button) feature is working correctly. Verify
that the circuit is operational by momentarily dis-
connecting one of the emergency reverse wires.
The vehicle should be disabled and a fault indi-
cated.

4-3.6. Adjustment.

To change a parameter
mer, press the "PROGRAM" key, and scroll down the
Program Menu until the desired parameter is the top
line of the display. Press the appropriate "CHANGE
VALUE" key ("up" or "down") until the desired number
is reached. The parameter is now set at the desired
value. All programming occurs in real time. That is, the
parameter can be changed while the vehicle is in oper-
ation.
Some parameters have dependencies on other
parameters. When the programmer is being used to
adjust a parameter and a limit is reached, the display
will stop changing. To see why the display has stopped
changing, press the "MORE INFO" key. If the limit is
related to another parameter, that information will be
displayed; changing the value of the related parameter
may allow the original parameter to be adjusted fur-
ther. Otherwise, the display simply says "Max Limit" or
"Min Limit".
4-3.7.
10-3.4.
(Table 4-3) using the program-
4-5