Description: Communication error between main PWB and print engine
Causes: Defective main PWB. Defective engine PWB.
Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB. Defective engine PWB. Replace the engine PWB and check for correct operation.
Code: F041
Description: Communication error between main PWB and scanner engine
Causes: Defective main PWB. Defective ISC PWB.
Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB. Defective ISC PWB. Replace the ISC PWB and check for correct operation.
Code: F050
Description: Print engine ROM checksum error
Causes: Defective engine PWB.
Remedy: Defective engine software. Install the engine software. Defective engine PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace engine PWB.
Code: F051
Description: Scanner engine ROM checksum error
Causes: Defective ISC PWB.
Remedy: Defective Scanner software. Install the Scanner software. Defective ISC PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace ISC PWB.
Code: F278
Description: Power supply in drive system error
Causes: Main power switch was turned off without using the power key, or a power failure has occurred.
Remedy: Turn on power. (To switch off power, first press the power key until the main power indicator goes off, then turn the main power switch off.)