JLG X20JP - X600AJ Service Manual - Manual (Page 295)

SECTION 6 - JLG CONTROL SYSTEM
3121623 – JLG Lift – 6-79
In this case, due to some problem in the connection, the
voltage drops enough to determine a battery disconnec-
tion but not enough to pass the 1 Vpc voltage check.
What happens in this case is that, both with the new or old
firmware versions, the charger remains locked in A13 in
order to letting know the customer that the connection
does not appear to be reliable. What you need to do in
this case is physically disconnecting the charger, let the
voltage drop, and connect again the battery, as shown
below.
Figure 6-59.
T4: manual disconnection of the battery
T5: a new battery is recognized
Troubleshooting: A13 usually appears at the end of a
charge. This alarm may also spawn when connecting a
battery which is completely charged or with a nominal
value that is greater than the charger’s one. Follow the
instruction above to recover from this alarm (basically, dis-
connect the battery, let the charger’s capacitors dis-
charge, and connect again a new battery). If the charger
remains locked in A13 alarm, besides connection prob-
lems, you may also have connected the new battery too
early. Disconnect the battery and then wait for at least 7
seconds, 10 seconds or wait for the alarm to clear
(depending on the firmware versions).
A14: PUMP MISTAKE (CB, CB9, QL)
Non-blocking alarm. This error occurs whenever the Air
Pump pressure is not within the proper limits. If the display
is present, this alarm will be shown in the data roll, after
the charged ampere-hours (or eventually the number of
slave devices, if there are any). Moreover, this alarm
causes the Air Pump to beep and to light its led. Most
important, when this alarm occurs the charger’s turns the
pump off, while charge continues.
Troubleshooting: the air pressure is too high or too low, so
check the air tube. Check also with a pressure gauge if the
pressure is within the 50 – 250 mbar range. If the air pump
is always working, verify the correctness of the wiring
between the Air Pump and the charger. In fact, the pump
should switch in a continuous cycle of 3 minutes of work
and 10 minutes of rest (20 minutes after the first hour of
cycling). If problem persists, contact Zivan
A14: SHORT OUTPUT (CB6, QE6)
Blocking alarm. This alarm occurs when the charger
detects a significant current and a low voltage (< 1.05 V/
cell) for 10 consecutive seconds. In this case the charger
stops.
Troubleshooting: the output of the charger has probably a
short circuit. Check for short circuits in the connection
cable and make sure that the connectors are not in touch
with metallic parts. If the problem persists, the charger
may be damaged. Change the product or contact Zivan.
A15: TH. SENSOR KO (CB, CB6, CB9, QL)
Non-blocking alarm. This alarm reports a failure in the
thermal sensor PT100, which may be short-circuited or
open. If the display is present, this alarm will be shown in
the data roll, after the charged ampere-hours (or eventu-
ally the number of slave devices, if there are any – for CB9
products, this way of displaying is done only in the 0.44
firmware versions or higher).
Troubleshooting: the temperature sensor PT100 is open or
not working. Change or disconnect (at your own risk) the
temperature sensor. Contact Zivan
A16: LOGIC FAILURE #2 (CB, CB6, CB9, QE6, QE9,
QL)
Temporary alarm. This error reports a problem in the volt-
age levels of the power supply, which is typically caused
by a hole in the mains voltage. During this alarm the char-
ger stops and, similarly to the A07 alarm, waits for 2.5 sec-
onds and then tries to resume the charge from the point it
was interrupted.
Troubleshooting: wait for the charger to try the restarting
procedure. If the problem persists, check that the input
power cord is properly working and make sure that the
mains voltage is correct.
A17: FLASH CHECKSUM (NG1/NG3, G9, QL)
Blocking alarm. This error occurs when the microproces-
sor detects a corruption in its internal flash memory. This
is done through a checksum algorithm that is able to
understand (with some limitations) if the microprocessor
is running the same exact program that was originally pro-
grammed or not.
Troubleshooting: try to turn off and turn on the charger. If
the problem persists, change the product or contact Zivan.
A18: EEPROM KO (CB, CB9, QE, QE9, QL)