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Avantra 36/44 Service Manual
4-2
Maintenance
4.2
Servicing
4.2.1 Checking Sensor Operation
When reading the following procedures, refer to the low voltage wiring diagram.
4.2.1.1
Optical Interrupter
1.
Check the +5 V supply. Connect the DVM between P31,4 (common) and
P31,2 (+).
Reading should be 4.75 to 5.25 V DC.
2.
Check the supply to the transmitter. Connect the DVM between P31,4
(common) and P 31,3 (supply) of the optical interrupter.
Reading should be 1.7 to 1.9 DC.
3.
Connect the DVM between P31,4 (common) and P31,1 (pulse) of the opti-
cal interrupter.
Reading should range from 12 V (detector gap open) to 0 V (detector gap
closed).
4.2.1.2
Film Sensor
1.
Check the output. Connect the DVM across the appropriate channel to be
checked.
For SENSOR 4, for example, measure the voltage between X501,15 and
X501,2. A non activated sensor should read 0 V, and an activated sensor
should read 5 V.
4.2.1.3
Temperature Sensor
Checking the response to the actual temperature is done as a resistance measure-
ment.
1.
Switch off the processor.
2.
Disconnect the sensor from the circuit.
3.
Connect a DVM to the sensor.
4.
Use the following (simplified) formula to calculate the correlation between
temperature and resistance:
Resistance (Q) = (temp. [C
°
] x 1.925) + 500
Summary of Contents for Avantra 36/44
Page 1: ...The Avantra 36 44 Service Manual Part Number 580078 0002 ...
Page 24: ...Section I Imagesetter ...
Page 282: ...Section II Bridge ...
Page 327: ...Section III Buffer ...
Page 359: ...Section IV On line Processor ...
Page 462: ...Avantra 36 44 Service Manual B 2 Spare Parts Avantra 36 44 OLP Parts ...
Page 464: ...Avantra 36 44 Service Manual B 4 Spare Parts Avantra 36 44 OLP Parts ...
Page 466: ...Avantra 36 44 Service Manual B 6 Spare Parts Avantra 36 44 OLP Cassette Parts ...
Page 468: ...Avantra 36 44 Service Manual B 8 Spare Parts Avantra 36 44 OLP Feed Rack Parts ...
Page 470: ...Avantra 36 44 Service Manual B 10 Spare Parts Avantra 36 44 OLP Tank Parts ...
Page 472: ...Avantra 36 44 Service Manual B 12 Spare Parts Avantra 36 44 OLP Right Side View Parts ...
Page 474: ...Avantra 36 44 Service Manual B 14 Spare Parts Avantra 36 44 OLP Control Panel Parts ...
Page 476: ...Avantra 36 44 Service Manual B 16 Spare Parts Avantra 36 44 OLP Rack Spare Parts ...
Page 478: ...Avantra 36 44 Service Manual B 18 Spare Parts Avantra 36 44 OLP Dryer Spare Parts 18 ...
Page 480: ...Avantra 36 44 Service Manual B 20 Spare Parts Electronics upper Spare Parts ...
Page 482: ...Avantra 36 44 Service Manual B 22 Spare Parts Electronics lower Spare Parts ...
Page 484: ...C 1 Appendix C Wiring Diagrams ...
Page 491: ...Section V Crane ...