2Writing Error; 3Usb Port Selection - Canon BJC-55 Service Bulletin

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COMP. SYSTEMS

5-4-2. Writing error

If a writing error occurs, the following information is indicated on the printer:

Error Condition

Data error

Flash error

RAM error

If an error occurs, implement the following countermeasure:

Data error occurs:

As error checking is performed with each data set, when the error is been detected, the

data has already been written. After also confirming the connection to the computer, re-

enter the writing mode and transfer the correct data.

Flash error occurs:

As error checking is performed with each data set, when the error is been detected, the

data has already been written. Re-enter the writing mode and transfer the correct data. If

the same error occurs, the flash ROM may be damaged. Replace the Control Board.

RAM error:

Occurs when the RAM memory to be used for writing on the printer side is checked. The

writing operation is not being performed. Replace the Control Board of the printer.

5-4-3. USB port selection

Each machine with a USB I/F has a unique ID, and the USB port of the host computer

(USBPRNxx) is exclusively assigned to this. If a new USB device is connected, a USB

port for the device is newly assigned. The USB port for the writing mode is assigned in the

ROM writing mode of BJC-55/BJ M40. The ports which are enabled by the USB Loader

are from 1 to 99. Note that only the USB ports assigned for writing mode from

"USBPRN01" to "USBPRN99" are correctly written to.

Power LED Error LED

Lights

Blinks

Reverse blink with the Power LED

Blinks

Synchronous blink with the Power LED

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PRNT-896

Beeper

Two long beeps

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