Image error
 - Adjust the printing area
 - Adjust the rising timing of the printing roller
 - Image error and operation
 - Space motor error
 - White Voltage adjustment
 
 Master making error
 - Adjust the master detecting sensor
 - Adjust the master loadunload position
 - Adjust the pressure of the master delivery plate
 - Adjust the tension of master making belt
 - Adjust the voltage of thermal head
 - Light No 3 is on, show “no master loading”
 - Light No 3 is on, show “remnants master in the paper feeding part”
 - Light No 3 is on, shows“cut motor malfunction”
 
 Paper feeding error
 - Adjust the gap of paper separator pawl
 - Adjust the image position sensor
 - Adjust the interval of paper feeding magnet
 - Adjust the length of first paper feed
 - Adjust the position of left paper jam sensor
 - Adjust the pressure of the friction pad
 - Adjust the second paper feeding length
 - Adjustment the cam gap
 - Feed timing adjustment, feed cam adjustment
 - Install the paper feeding roller
 - Light No 5 is on, display middle paper jam
 - Light No 6 is on, display left paper jam
 - Light No 6 on  ,show add paper
 - Light No. 7 is on, right paper jam or disposal box open
 - Paper separator device adjustment
 - Second paper feeding pressure adjustment
 
 Unloading error
 - Adjust the master load and eject position sensor
 - Adjust the position of waste master full switch
 - Adjust the waste master detecting sensor
 - Cut when one-third master making
 - Light 4,Show ' The clamp motor problem'
 - Light No 4 is on, the disposal master box is full
 
 Clamper error
 - Adjust the AC Mode Position
 - Adjust the B Mode
 - Adjust the Synchronous Belt of the Clamper
 - B Mode Standard Position
 - Clamp Error
 - Master onoff combination
 
 Drum error
 - Adjust the stop position
 - light No 5 is on ,display no drum
 - light No 5 is on, the drum be locked
 - light No 5 is on, the ink is over
 - Replace cloth screen
 - The home position of drum
 
 Electronic error
 - Coder sensor
 - Display top cover open
 - light No. 5 is on
 - Main motor locked
 - Power protect
 - System Error