UBI EasyCoder 501 – Service Manual
193
26. TROUBLE SHOOTING, cont'd.
26.2
Single Function Failure,
cont'd.
Ribbon-End Sensor out of order
• If the error condition 1027 "Out of transfer ribbon" is not
reported even though the printer positively is out of ribbon,
there is something wrong with the ribbon end sensor.
• The same applies if it becomes impossible to print with the
printer being set up for direct thermal printing regardless if the
transfer ribbon is removed (error 1058 “Transfer ribbon fit-
ted”).
• Check the sensor for paper dust or foreign objects and that the
mirror plate is properly aligned.
• Check that the sensor's cable is connected to P-603 on the CPU
board.
• Adjust the sensitivity of the receiver by means of potentio-
meter WR-601 on the CPU board.
• Fit or remove strap on P-604 to change the intensity of the light
emitter.
Note:
In printers not fitted with a transfer
ribbon mechanism, a strap must be fitted
on P-9:J1 to substitute the ribbon-end
sensor's out-of-ribbon signal, so direct
thermal printing can be used.
