Led Controller Output Trouble (Black); Led Controller Output Trouble (Cyan); Led Controller Output Trouble (Magenta); Led Controller Output Trouble (Yellow) - Sharp AR-BC260 Service Manual

Main Sub LED controller output trouble
Title
code code (Black)
E7 24 Display Lamp/Message
Phenomenon Detail
Section LED/ICU PWB
Case 1 Cause
Check &
Remedy
Case 2 Cause
Check &
Remedy
Case 3 Cause
Check &
Remedy
Main Sub LED controller output trouble
Title
code code (Cyan)
E7 25 Display Lamp/Message
Phenomenon Detail
Section LED/ICU PWB
Case 1 Cause
Check &
Remedy
Case 2 Cause
Check &
Remedy
Case 3 Cause
Check &
Remedy
Main Sub LED controller output trouble
Title
code code (Magenta)
E7 26 Display Lamp/Message
Phenomenon Detail
Section LED/ICU PWB
Case 1 Cause
Check &
Remedy
Case 2 Cause
Check &
Remedy
Case 3 Cause
Check &
Remedy
When printing, the print end
signal for each page is not
properly provided.
Disconnection of the LED
head connector.
Check connection of the
LED head connector.
Disconnection of the
harness inside the LED
head.
Replace the LED head unit.
ICU PWB abnormality
Replace the ICU PWB.
When printing, the print end
signal for each page is not
properly provided.
Disconnection of the LED
head connector.
Check connection of the
LED head connector.
Disconnection of the
harness inside the LED
head.
Replace the LED head unit.
ICU PWB abnormality
Replace the ICU PWB.
When printing, the print end
signal for each page is not
properly provided.
Disconnection of the LED
head connector.
Check connection of the
LED head connector.
Disconnection of the
harness inside the LED
head.
Replace the LED head unit.
ICU PWB abnormality
Replace the ICU PWB.
AR-BC260 TROUBLESHOOTING 11 - 5
Main Sub LED controller output trouble
Title
code code (Yellow)
E7 27 Display Lamp/Message
Phenomenon Detail
Section LED/ICU PWB
Case 1 Cause
Check &
Remedy
Case 2 Cause
Check &
Remedy
Case 3 Cause
Check &
Remedy
Main Sub LED control ASIC connection
Title
code code abnormality
E7 28 Display Lamp/Message
Phenomenon Detail
Section ICU/PCU PWB
Case 1 Cause
Check &
Remedy
Case 2 Cause
Check &
Remedy
Case 3 Cause
Check &
Remedy
Main Sub
Title

ICU PWB matching error

code code
E7 30 Display Lamp/Message
Phenomenon Detail
Section ICU PWB
Case 1 Cause
Check &
Remedy
Case 2 Cause
Check &
Remedy
When printing, the print end
signal for each page is not
properly provided.
Disconnection of the LED
head connector
Check connection of the
LED head connector.
Disconnection of the
harness inside the LED
head.
Replace the LED head unit
ICU PWB abnormality
Replace the ICU PWB.
Access error between the
PCU PWB CPU and the
LED control ASIC
Disconnection of the ICU/
PCU PWB communication
connector
Check connection of the
ICU/PCU PWB
communication connector
ICU/PCU PWB
communication harness
trouble.
Check the ICU/PCU PWB
communication harness.
ICU PWB/PCU PWB
trouble
Check grounding of the
machine. Replace the ICU
PWB or the PCU PWB.
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.
An ICU PWB for the AR-
C170M is installed to the
AR-BC260.
Replace the ICU PWB.
ICU PWB abnormality
(When the identification port
is abnormal)
Replace the ICU PWB.