JLG X20JP - X600AJ Service Manual - Manual (Page 296)

SECTION 6 - JLG CONTROL SYSTEM
6-80 – JLG Lift – 3121623
Blocking alarm. This error occurs whenever there micro-
processor detects communications problem with the
external EEPROM memory. When this alarm is shown in
ZnCanConsole, it is also followed by a number or an acro-
nym that is used by Zivan to understand how the alarm
was generated.
Troubleshooting: try to turn off and turn on the charger. If
the problem persists, change the product or contact Zivan
A19: FLASH CHECKSUM (QE, QE9)
Blocking alarm. This error occurs whenever there micro-
processor detects communications problem with the
external EEPROM memory. When this alarm is shown in
ZnCanConsole, it is also followed by a number or an acro-
nym that is used by Zivan to understand how the alarm
was generated.
Troubleshooting: try to turn off and turn on the charger. If
the problem persists, change the product or contact Zivan.
A20: LOGIC FAILURE #2 (QE, QE9)
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
A21: LOGIC FAILURE #3 (G9 only, QL)
Blocking alarm. This error occurs when the charger’s
detects a voltage that exceeds a safety threshold for more
than 6 seconds, approximately.
Troubleshooting: try to turn off and turn on the charger. If
the problem persist, change the product or contact Zivan.
A21: LOGIC FAILURE #3 (QE9 only)
Blocking alarm. This error occurs when the charger’s
detects a voltage that exceeds a safety threshold for more
than 25 seconds.
Troubleshooting: try to turn off and turn on the charger. If
the problem persist, change the product or contact Zivan
A29: CLK BATTERY OFF (only for CB, CB6 products
with Clock Calendar logics and firmware versions 0.24,
0.16 - respectively - or higher)
Non- blocking alarm. This error occurs whenever the Year
indication of the Clock Calendar is zero. This happens
when the button cell battery in the logic board is dis-
charged or removed, or there are communications prob-
lem between the microprocessor and the Clock Calendar.
The control algorithm or this alarm is performed only once
at the turn on of the charger. If the display is present, this
alarm will be shown in the data roll, after the charged
amperhours (or eventually the number of slave devices, if
there are any). The battery supplied with charger has an
expected service life of 5 years.
Troubleshooting: Battery needs to be replaced. Contact
Zivan.