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MX-C300P  TROUBLESHOOTING  7 – 12

Cause

Connection error between OPU and MCU section 
data corruption

Check & Remedy

Check connector connection and harness 
Replace MFPC PWB
Check ground point
Power off/on

Cause

Connection error between OPU and MCU section 
data corruption

Check & Remedy

Check connector connection and harness 
Replace MFPC PWB
Check ground point
Power off/on

Cause

Command size error from MCU to OPU

Check & Remedy

Check connector connection and harness 
Replace MFPC PWB
Check ground point
Power off/on

Cause

Command size error from MCU to OPU

Check & Remedy

Check connector connection and harness 
Replace MFPC PWB
Check ground point
Power off/on

C2PPD_ST

C2PPD remaining JAM
(Cassette2 feed paper)

TRAY1

PPD2 not-reached JAM
(Main cassette feed paper)

TRAY2

C2PPD not-reached JAM
(Cassette2 feed paper)

PPD2_N2

PPD2 not-reached JAM
(Cassette 2 feed paper)

PPD2_NA

PPD2 not-reached JAM
(ADU feed paper)

PPD2_S1

PPD2 remaining JAM
(Main cassette feed paper)

PPD2_S2

PPD2 remaining JAM
(Main cassette 2 feed paper)

PPD2_SA

PPD2 remaining JAM
(ADU feed paper)

PPD2_SM

PPD2 remaining JAM
(Manual feed tray feed paper)

PRI

PPD2 JAM
(Waiting the image preparation finish time out)

DRUM

PPD2 JAM(Detecting the drum lock)

PPD1_N

PPD1 not-reached JAM (Main tray feed paper)

PPD1_SA

PPD1 remaining JAM (ADU refeed paper)

PPD1_SB

PPD1 remaining JAM (POD1 exiting paper)

MFT

PPD2 not-reached JAM
(Manual feed tray feed paper)

NO_MATCH

Parameter inconsistency

SIZE_ILG

Size irregular JAM

STOP_JAM

Emergency stop JAM

MX-C300P  FIRMWARE UPDATE  8 – 1

MX-C300P

6HUYLFH0DQXDO

ROM update is required in the following cases:
1) When there is a necessity to upgrade the performance.
2) When installing a new spare parts PWB unit (with ROM) for

repair to the machine.

3) When there is a trouble in the ROM program and it must be

repaired.

Before execution of ROM update, check combinations with ROM’s
installed in the other PWB’s including options. Some combinations
of each ROM’s versions may cause malfunctions of the machine.

There are following methods of update of the firmware.
1)

Firmware update using USB memory. 

For the update, connect the media or USB memory to the USB port that exists in the main body, and select the firmware data in the media or
USB memory by simulation screen in the main unit.

*1:
- Store the firmware data (xxx .sfu) to the media or USB memory beforehand.
- The media used for the update must have a minimum of 32MB of storage capacity.
- The USB flash memory equipped with the security (secure) function cannot be used.

 

 

 

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MX-C300P  FIRMWARE UPDATE  8 – 2

The firmware update executes by SIM49-01.

1) Insert the media or USB memory which stores the firmware into

the main unit. (Use the USB I/F of the operation panel section.)

2) Enter the SIM49-01.

Select the firmware file to be updated with [up] or [down] key.
The displayed firmware file is changed depending on the files in
the USB thumb drive.  

* When there is no firmware file in the USB memory, “No file

detected” message is displayed.  

* The displayed firmware file is changed depending on the

files in the USB thumb drive.

3) Select the file and press [OK] button. Then, the current version

and the new version are displayed. 

4) Press [OK] button. Then, the machine is restarted and the

download of the firmware file starts. 
* At this moment, do not disconnect the USB memory.  

5) After downloading the firmware file, the upgrading starts. 

* At this moment, do not disconnect the USB memory.  

6) When the upgrading is finished, the upgrading result is dis-

played.  

When the upgrading is finished correctly, the message shown in
the figure is displayed. 

When the upgrading is failed, the defective part and the error
code are displayed. 

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VIX

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MX-C300P  MAINTENANCE  9 – 1

MX-C300P

6HUYLFH0DQXDO

When the drum cartridge, the primary transfer unit, the secondary
transfer unit, or the fusing unit is replaced with a new one, the initial
detection function operates after turning ON the power to reset
each counter automatically.

When the machine is initialized during warming up, or when the
simulation is executed or the machine is turned OFF and the door
is opened before the machine enters the print ready state, the initial
detection function may not operate normally. Therefore, never exe-
cute the simulation or never operate the machine such as turning
OFF the machine power and opening the door before the machine
enters the print ready state after replacing one of the above parts
and turning ON the power.

When the counter is not automatically reset, it must be reset manu-
ally.

Since the maintenance counter (total) and the maintenance coun-
ter (color) are not automatically reset, they must be cleared by exe-
cuting SIM24-4.

(For details, refer to the page of "2. Maintenance timing display.")

When the developer cartridge is replaced, the initial setting of the
toner density needs to be executed by SIM25-2.

If another simulation is executed or the machine power is turned
OFF during execution of this simulation, the initial setting of the
toner density cannot be executed normally. Therefore, never oper-
ate the machine until the initial setting of the toner density is com-
pleted (the machine enters the print ready state).

Perform the following items.

- Image skew adjustment (LSU unit) (SIM61-04)

- Image registration adjustment (SIM50-22)

- Firmware version check (SIM22-05) (Execute according to the

necessity.)

- Trouble counter and JAM counter reset (SIM24-01)