SECTION 6 - TROUBLESHOOTING
6-18
31215825
6.11 FAULT CODE TROUBLESHOOTING TABLES
Machine in Drive Speed Cut-Back (Turtle) Mode All The Time
Overview of Procedure
Under normal machine operation once the platform is elevated the machine’s maximum drive speed is reduced to 1/4 the normal
drive speed of when the platform is fully lowered. This is detected with a drive speed cut-back
(proximity)
switch mounted at the base
of the mast assembly and a target mounted on the mast assembly. When the mast is elevated and the target raised the proximity
switch then cuts back the machine drive speed. When machine is in the drive speed cut-back mode a turtle is displayed on the
Ground Control Module LCD display.
Check For These Obvious Conditions First:
• Mast drive speed cut-back (proximity) switch and target plate secure and undamaged.
• Both Pot Hole Protection Bar Limit switches secure and undamaged.
Battery Voltage Low - Warning Level 3 - Three (3) LED/LCDs lit
• 3 LEDs/BARS Flashing with an audible beep.
• Machine will Operate - No Control Functions are Locked Out.
When batteries are drained to Warning Level 3, charge batteries until a level of four (4) LEDs-(Platform) or BARS (Ground Control Mod
-
ule), or more before operating. Failure to do so, will eventually result in a fault Code 38 - Battery Voltage Low - Warning Level 2.
NOTE:
If battery is not charging properly, see Battery/Battery Charger Servicing - Section 3 of this Manual.
Overload Alarm and Overload Indicator
Overload Alarm: The output of the alarm will be software controlled and sound a continuous alarm while LSS is active.
Overload Indicator: The overload indicator will be mounted on the platform box and connected internally to the platform box panel
connector. The anode side of the LED will be routed to the ground station and driven by the aux 2 Output (ground module P1-8). P1-
8 output should mimic the current Aux 1 output (P1-9) when LSS is enabled. This will drive the LED at 5 seconds on and 2 seconds off.
NOTE:
The LSS system activation will remain the same and will only be active when an open circuit is detected at ground module pins P2-13
and P2-4. Machine drive and lift functions will be deactivated while LSS is activated.
Table 6-5. Machine In Drive Speed Cut-Back (Turtle) Mode All The Time
STEP
ACTION
SPEC
YES
NO
1.
The Pot-Hole-Protection system bars should be raised when the
platform is fully lowered. Check if the Pot-Hole-Protection bars are
down when the platform is fully lowered.
—
Check the
mechanical
operation of
the PHP System
Go to Step 2
2.
With the platform fully lowered, check for continuity on the Cutback
Proximity Switch wires between pins-8 and 18 on the P2 connector
at the Ground Control Module.
—
Go to Step 3
Repair or Replace
Speed Cutback
(Proximity)
Switch
3.
With the platform fully lowered, bars raised, check for continuity on
the Right Side PHP bar limit switch, between pins-9 and 19 on the P2
connector at the Ground Control Module.
—
Repair or Replace Right Side
PHP Limit Switch
Go to Step 4
4.
With the platform fully lowered, bars raised, check for continuity on
the Left Side PHP bar limit switch, between pins-10 and 20 on the P2
connector at the Ground Control Module.
—
Repair or Replace Left Side
PHP Limit Switch
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