Read Sharp MX-GB50A (serv.man3) Service Manual online
37
5.2 TROUBLESHOOTING GUIDE CHART
The Troubleshooting Guide Chart that follows is arranged in order of the normal operational
sequence. When a malfunction occurs, read down the SYMPTOM column until you reach the
appropriate description for your symptom. Read the corresponding PROBABLE CAUSE and then
perform the recommended procedure in the CORRECTIVE ACTION column.
sequence. When a malfunction occurs, read down the SYMPTOM column until you reach the
appropriate description for your symptom. Read the corresponding PROBABLE CAUSE and then
perform the recommended procedure in the CORRECTIVE ACTION column.
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
No indication of power
Not plugged in
Check to ensure that power cord is
properly connected to the machine
as well as the supply voltage.
Check the power supplied from the
outlet
properly connected to the machine
as well as the supply voltage.
Check the power supplied from the
outlet
No indication of power,
Unit is plugged in
Unit is plugged in
Main Control Board, a minimum of 2 of
the 3 LED’s on this board should be lit,
if not, board is bad
Display Panel or Cable
Door not making interlocks
Die Set not making switch
Jumper on the Main Control Board is
not set to the proper line voltage
the 3 LED’s on this board should be lit,
if not, board is bad
Display Panel or Cable
Door not making interlocks
Die Set not making switch
Jumper on the Main Control Board is
not set to the proper line voltage
Replace Main Control Board
Inspect or replace
Inspect or replace
Inspect or replace
Change the jumper to the proper line
voltage
Inspect or replace
Inspect or replace
Inspect or replace
Change the jumper to the proper line
voltage
No indication of power,
Unit is plugged in
Unit is plugged in
Main Control Board, a minimum of 2 of
the 3 LED’s on this board should be lit,
if not, board is bad
Display Panel or Cable
Door not making interlocks
Die Set not making switch
Jumper on the Main Control Board is
not set to the proper line voltage
the 3 LED’s on this board should be lit,
if not, board is bad
Display Panel or Cable
Door not making interlocks
Die Set not making switch
Jumper on the Main Control Board is
not set to the proper line voltage
Replace Main Control Board
Inspect or replace
Inspect or replace
Inspect or replace
Change the jumper to the proper line
voltage
Inspect or replace
Inspect or replace
Inspect or replace
Change the jumper to the proper line
voltage
Machine will not start, READY
LED is ON
LED is ON
Check Power Supply Board LED, if not
lit, board is bad
Check Main Control Board LED’s, if a
minimum of two of the three are not lit,
board is bad
Door is not closed or properly making
the interlock
lit, board is bad
Check Main Control Board LED’s, if a
minimum of two of the three are not lit,
board is bad
Door is not closed or properly making
the interlock
Inspect cable connections, replace
board as needed
Inspect cable connections, replace
board as needed
Inspect and correct
board as needed
Inspect cable connections, replace
board as needed
Inspect and correct
Paper Jam LED is lit, customer /
operator has been unable to
locate the jam
Paper Jam, not able to find any
large sheets, removed sheets
are torn
operator has been unable to
locate the jam
Paper Jam, not able to find any
large sheets, removed sheets
are torn
A small piece of chad or torn paper is
blocking a sensor and/or the paper
path
Suspect a small piece of paper is
hidden somewhere in the paper path
blocking a sensor and/or the paper
path
Suspect a small piece of paper is
hidden somewhere in the paper path
Separate the SmartPunch from the
Printer and the Finisher, clean out
the entire paper path
Run a heavy cover stock through the
system by hand. This process may
drive any small torn pieces out of the
paper path
Printer and the Finisher, clean out
the entire paper path
Run a heavy cover stock through the
system by hand. This process may
drive any small torn pieces out of the
paper path
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