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SHARP SERVICE MANUAL JX8200SM [11] TROUBLESHOOTING
[11] TROUBLESHOOTING
1. Self diagnostic message
A. Outline
In case of trouble in the printer or when any consumable part is
exhausted, the printer detects and analyzes it and the operation
panel LCD and LED display the status to warn the user and the
serviceman.
Basically, the LED indicates the kind of errors, and the LCD the
content.
When the printer detects any trouble, the power line of the loads is
immediately turned off to assure safety and to minimize the possible
damages of the printer.
The self diagnostics messages are classified into two; the service call
messages and the operator call messages.
[Operator call messages]
The operator call messages relate to the consumable parts and paper
jams.
[Service call messages]
The service call messages indicates errors which require to be
repaired by a serviceman.
The self diagnostics operations and messages are also dependent on
the operation modes of the printer.
The operation modes are classified into two; the normal print mode
and the diagnostics mode. The process of data (commands,
statuses) related to self diagnostics differs in different modes.
[Normal print mode]
In the normal print mode, command data are sent from the ICU to
check the printer status.
While the PCU detects the printer condition and sends the status data
(the detection result) to the ICU.
While on the printer side, the PCU displays the status according to
the data from the ICU.
[Diagnostics mode]
In the diagnostics mode, the PCU detects the printer condition and
displays the status directly on the printer display.
The ICU does not operate, either. The operation is performed only by
the PCU.
Self diagnostics message data process flow
PRINTER
P(S2)
P(C)
PCU
ICU
P(S1)
P(S1)/D(S)
LCD/LED DISPLAY
Trouble occurrence/
consumable part life
The trouble is detected
and analyzed.
The content of trouble is
displayed on the operation
panel LCD.
Turn off the power switch.
Consumable part life
Trouble content
Trouble
Troubleshoot with the
diagnostic function.
Repair
Reset
P(C): In the print mode, the command data to check the printer
status is sent from the host ICU.
P(S2): The status data which is sent from the PCU to the ICU in the
print mode.
P(S1): In the print mode, the PCU displays the status on the printer
display according to the command from the ICU.
D(S): In the diagnostics mode, The ICU does not operate. Only the
PCU operates.
11 – 1
CRT DISPLAY
HOST
PRINTER DRIVER
Replace the consumable
part.
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