Electrical Adjustments
SM3226-1 – 10FEB97
5–9
Output Voltage for Receivers PT1, PT2, and PT3
Perform this procedure to ensure the output voltages of RECEIVERS PT1, PT2, and PT3 are correct for the DRIVER
BOARD to convert to a TTL level used at the SEQUENCE BOARD. It will be necessary to check this output when
changing film manufacturers, replacing sensors and/or DRIVER BOARD.
To Check:
[1] Connect the Channel A and the Channel B GROUND CLIPS to CPG5.
[2] Connect the Channel A OSCILLOSCOPE PROBE to the correct TEST POINT:
Note
This gives the analog output of each FILM JAM SENSOR.
• PH2 for the SLOW SCAN FILM SENSOR
• PH3 for the FILM PROCESSOR ADAPTER FILM SENSOR
• PH1 for the TRANSPORT GUIDE PLATE FILM SENSOR
[3] Set the Sec/Div to 2 ms/division.
[4] Set the Volts/Div to 1.0V for both Channel A and Channel B.
[5] Connect the Channel B OSCILLOSCOPE PROBE to the correct TEST POINT:
Note
This shows the TTL levels for each FILM JAM SENSOR as converted by the DRIVER BOARD.
• PHT2 for the SLOW SCAN FILM SENSOR
• PHT3 for the FILM PROCESSOR ADAPTER FILM SENSOR
• PHT1 for the TRANSPORT GUIDE PLATE FILM SENSOR
