Other Related Items - Sharp MX-M350 Service Manual

MAIN SUB
EE EU Content Auto developer adjustment trouble
(Under-toner)
Detail The toner concentration output is
detected as 3.5V or above in the auto
development adjustment.
Cause Insufficient toner concentration
Charging voltage, developing voltage
abnormality
Insufficient toner concentration
Developing unit trouble
PCU PWB trouble
Check and Use SIM25-2 to perform auto developer
remedy adjustment.
PF 00 Content RIC copy inhibit signal is received.
Detail Copy inhibit command from RIM (host)
is received.
Cause Judged by the host.
Check and Inform to the host.
remedy

4. Other related items

(1) Self diag operation
The machine always monitors its own status. When it detects any
abnormality or a status which requires warning, it performs the self
diag operation to display the trouble or warning message as fol-
lows:
Warning Content This message is displayed to warn
mainly the user to inform that a
consumable part is near life, etc. It is
no direct relation with machine
troubles.
Machine The machine operation may be
operation stopped and may be not.
Message The message may be automatically
clear cleared by replacement or supply of
the consumable part, or may be
cleared by the specified simulation
operation.
Trouble Content This message is a trouble message
related to a machine trouble.
Machine The machine operation is stopped.
operation
Message This message may be automatically
clear cleared by repairing the trouble, or
may be cleared by the specified
simulation operation.
Details
MX-M350/M450 N/U TROUBLE CODES 11 - 13
(2) Power ON trouble detection function
• When the power is turned on, if the stored trouble is H3, H4, H5,
U1, U2, PF, or U6 (sub code 2, 3), it is immediately judged as a
trouble.
∗ E7-50 and 60 are not judged as a storing trouble, (Detected
every time when the power is turned on.)
Trouble code Storing
H3, H4, H5 PCU
U1 ICU
U2 Each block
PF ICU
U6-2, 3 PCU
(3) Basic flow of countermeasures
Monitors the machine
conditions.
Detects/analyzes
the content.
Warning
Trouble/Warning
Trouble
The machine is stopped.
The content is displayed.
Warning
Trouble/Warning
Trouble
Troubleshoot the cause.
Repair
Cancel the self-
diagnostic message with
the diagnostics
(test commands).
Reset
Standby state
Trouble cancel command
simulation
SIM 14
SIM 13
SIM 16
SIM 17
SIM 15
A consumable
NO
part has reached
its lifetime.
YES
Replace or supply
the consumable part.