Service Manual
Page 6
...digit signal or no segment signal Signal D1 ~ S1 ~ Check the pulse signals from LSI. • Defective display tube If VF1, VF2, Digit and Segment signals are OK. 3) No print.... • Poor voltage VM • Defective motor VM = 11 V±5 % (while printing) 4) Poor display. ...• Defective LSI • Short or open circuits between Between LSI and digit signals and segment sig- Check detector...digits. • Defective printer magnet • Refer to the printer service...
...digit signal or no segment signal Signal D1 ~ S1 ~ Check the pulse signals from LSI. • Defective display tube If VF1, VF2, Digit and Segment signals are OK. 3) No print.... • Poor voltage VM • Defective motor VM = 11 V±5 % (while printing) 4) Poor display. ...• Defective LSI • Short or open circuits between Between LSI and digit signals and segment sig- Check detector...digits. • Defective printer magnet • Refer to the printer service...