Service code interrupt

Error type T11 [Pressure-control motor lock]
T11-***
!!System Error!!
Press Reset Key
If Recovery has Failed, Call Service
Reset method Jam reset or switch on power again
Error point Error conditions
600
Timeout error for reducing pressure (OFF -> ON) during print-pressure home
positioning.
601
Timeout error for increasing pressure (ON -> OFF) during print-pressure home
positioning.
602 The print-pressure limit sensor does not change during print-pressure operation.
620 Print-pressure operation was called with the print-pressure motor locked.
621
Incorrect print-pressure operation timing (print-pressure operation command was
received when the print-pressure should not change).
622 Sensor A is ON and sensor B is OFF during movement from area A to area D.
623 Either sensor A or sensor B is ON during movement from area D to area A.
624 The current area data is undefined.
625 The target area data is undefined.
626 Timeout during relative print-pressure movement.
Error type T12 [Master-disposal-section motor lock]
T12-***
!!System Error!!
Press Reset Key
If Recovery has Failed, Call Service
Reset method Jam reset or switch on power again
Error point Error conditions
305
The master compression sensor does not go ON within 6.5 s after the master
compression motor operates in the return direction.
306
Master compression sensor does not go OFF within 2 s after the master
compression motor operates in the compress direction.
307
The master compression sensor does not go ON within 6.5 s after the master
compression motor operates in the compress direction, and the mastercompression-
motor limit sensor cannot count up until the compression-limit
position.
309
The master-compression-motor limit sensor does not change within 200 ms
during compression operation.

hope to be of help