AR-BC260 TROUBLESHOOTING 11 - 5
Main
code
Sub
code
Title
LED controller output trouble
(Black)
E7
24
Display
Lamp/Message
Phenomenon Detail
When printing, the print end
signal for each page is not
properly provided.
Section
LED/ICU PWB
Case 1
Cause
Disconnection of the LED
head connector.
Check &
Remedy
Check connection of the
LED head connector.
Case 2
Cause
Disconnection of the
harness inside the LED
head.
Check &
Remedy
Replace the LED head unit.
Case 3
Cause
ICU PWB abnormality
Check &
Remedy
Replace the ICU PWB.
Main
code
Sub
code
Title
LED controller output trouble
(Cyan)
E7
25
Display
Lamp/Message
Phenomenon Detail
When printing, the print end
signal for each page is not
properly provided.
Section
LED/ICU PWB
Case 1
Cause
Disconnection of the LED
head connector.
Check &
Remedy
Check connection of the
LED head connector.
Case 2
Cause
Disconnection of the
harness inside the LED
head.
Check &
Remedy
Replace the LED head unit.
Case 3
Cause
ICU PWB abnormality
Check &
Remedy
Replace the ICU PWB.
Main
code
Sub
code
Title
LED controller output trouble
(Magenta)
E7
26
Display
Lamp/Message
Phenomenon Detail
When printing, the print end
signal for each page is not
properly provided.
Section
LED/ICU PWB
Case 1
Cause
Disconnection of the LED
head connector.
Check &
Remedy
Check connection of the
LED head connector.
Case 2
Cause
Disconnection of the
harness inside the LED
head.
Check &
Remedy
Replace the LED head unit.
Case 3
Cause
ICU PWB abnormality
Check &
Remedy
Replace the ICU PWB.
Main
code
Sub
code
Title
LED controller output trouble
(Yellow)
E7
27
Display
Lamp/Message
Phenomenon Detail
When printing, the print end
signal for each page is not
properly provided.
Section
LED/ICU PWB
Case 1
Cause
Disconnection of the LED
head connector
Check &
Remedy
Check connection of the
LED head connector.
Case 2
Cause
Disconnection of the
harness inside the LED
head.
Check &
Remedy
Replace the LED head unit
Case 3
Cause
ICU PWB abnormality
Check &
Remedy
Replace the ICU PWB.
Main
code
Sub
code
Title
LED control ASIC connection
abnormality
E7
28
Display
Lamp/Message
Phenomenon Detail
Access error between the
PCU PWB CPU and the
LED control ASIC
Section
ICU/PCU PWB
Case 1
Cause
Disconnection of the ICU/
PCU PWB communication
connector
Check &
Remedy
Check connection of the
ICU/PCU PWB
communication connector
Case 2
Cause
ICU/PCU PWB
communication harness
trouble.
Check &
Remedy
Check the ICU/PCU PWB
communication harness.
Case 3
Cause
ICU PWB/PCU PWB
trouble
Check &
Remedy
Check grounding of the
machine. Replace the ICU
PWB or the PCU PWB.
Main
code
Sub
code
Title
ICU PWB matching error
E7
30
Display
Lamp/Message
Phenomenon Detail
Check matching between
the machine and the ICU
PWB (by the identification
port) when the power is
turned on. If matching is
improper, it is judged as a
trouble.
Section
ICU PWB
Case 1
Cause
An ICU PWB for the AR-
C170M is installed to the
AR-BC260.
Check &
Remedy
Replace the ICU PWB.
Case 2
Cause
ICU PWB abnormality
(When the identification port
is abnormal)
Check &
Remedy
Replace the ICU PWB.