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FE ZAJ, Service Manual

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FE ZAJ Service Manual Download Page 24

 

18 

TN512955-E 

 

Appendix 3-1  CPU printed board 

 

J6 

J5 

Summary of Contents for ZAJ

Page 1: ...Service Manual TN512955b E PARAMAGNETIC OXYGEN ANALYZER TYPE ZAJ...

Page 2: ...strictly prohibited unless a written approval is obtained from the manufacturer Fuji Electric will not bear any responsibility for a trouble caused by such a modification Name Q ty Remarks Analyzer m...

Page 3: ...A 0 to 1V 5 4 REPLACEMENT OF PARTS 6 4 1 Replacement of restrictor 6 4 2 Replacement of switching power supply 6 4 3 Replacement of sensor 7 4 4 Replacement of display 8 5 CHECK FOR SIGNALS 9 5 1 Chec...

Page 4: ...oof type Do not use it in a place with explosive gases to prevent explosion fire or other serious accidents CAUTION This unit should be installed in a place which conforms to the conditions noted in t...

Page 5: ...h oil and grease are not adhering If such a material is adhering a fire or the like accident may be caused Caution on wiring CAUTION The unit must be earthed as specified Otherwise it may cause electr...

Page 6: ...instrument with a wet hand Otherwise you will have a shock hazard If the fuse is blown eliminate the cause and then replace it with the one of the same capacity and type as before Otherwise shock haza...

Page 7: ...screw 3 Power switch 4 Display and operation panel 8 Reference gas inlet 7 Purge gas inlet 6 Sample gas outlet 5 Sample gas inlet 9 I O signal terminal 1 1 Handle 2 Knurled screw Front Rear 11 Screw f...

Page 8: ...pply has been performed carry out the signal check as described in Section 5 After that perform zero calibration and span calibration and flow sample gas Caution For protection of the sensor be sure t...

Page 9: ...stopper provided on the outer case prevents the inner case from being removed fully Photo 2 3 Components inside the inner case SW power supply 1 for magnet driving Sensor Fuse SW power supply 2 for c...

Page 10: ...The LCD contrast adjustment is performed by means of the VR of the display printed circuit board When the VR is turned clockwise by a precision driver display characters turn dark and when it is turn...

Page 11: ...selected This mode contains 4 to 20mA output 0 to 1V output coil pulse manual gain synchronous pulse zero memory span memory magnet reset and peak code input Be careful not to get in items other than...

Page 12: ...shown in the Photo 2 3 SW power supply 1 is used for magnet driving and SW power supply 2 for circuit use To replace the switching power supply perform how to stop analyzer given in section 2 1 Turn O...

Page 13: ...ignal cable connector Unscrew 3 screws from the mounting board while holding the sensor by hand and remove the sensor and mounting board from the instrument Unscrew 4 screws fastening the mounting boa...

Page 14: ...of the inner case and remove the front frame from the inner case Note that the soldered AC power cable cannot completely be removed from the instrument Unscrew 6 screws fastening the display printed c...

Page 15: ...lloscope Pulse cycles depend on power frequencies At power frequency of 50Hz 12 5 0 5Hz At power frequency of 60Hz 15 0 0 5 Hz 5 3 Check and adjustment of synchronous rectification waveforms Synchrono...

Page 16: ...erformed and poor measurement results will be obtained 0V 2 0 5V Good 0V 2 0 5V Not good MEAS MODE H ON R OFF L OFF A OFF ADJUST MODE MOVE AVE CLOCK Factory Mode Sync phase Amp gain Zero save Sync pha...

Page 17: ...the MANUAL ZERO CAL ERR code appears in the manual calibration check calibration gas range settings and calibration concentration settings Caution If the range settings have changed an error may be d...

Page 18: ...nge the reference gas and range Err 5 Output device error OUTPUT DEVICE ERR This code is displayed when a response is not received from an output printed circuit board Countermeasures Check the cable...

Page 19: ...eference gas line Does measure ment gas pressure fluctuate For reference gas joint Is cap screw loose Is reference gas line properly air tight Is valve fully open Needle valve for reduce valve Take an...

Page 20: ...rictor 2 years 5 Fuse 757642 2A 6 4 x 30 mm 2 years Recommended replacement cycle for maintenance parts is at least 2 years Prepare maintenance parts every 2 years Maintenance parts including No 1 to...

Page 21: ...point Zero temperature compensation table Temperature compensation table for zero point 2 gain 2 O2 gain 100 gain 100 O2 gain Name First address Length of data Byte Number of data Type of data Zero a...

Page 22: ...ngth Piping diameter Teflon tube About 0 5 m 3 mm 2mm Teflon tube About 0 5 m 5 mm 4mm SUS tube Nylon tube About 0 5 m 3 mm 2mm Teflon tube About 0 5 m 5 mm 4mm Appendix INLET OUTLET SUBGAS Gas inlet...

Page 23: ...CPU printed circuit board Thermistor Power terminal block Noise filter Power supply switch Fuse holder Relay terminal block Magnet driven wiring Magnet terminal block Display board Flat cable CPU boa...

Page 24: ...18 TN512955 E Appendix 3 1 CPU printed board J6 J5...

Page 25: ...TN512955 E 19 Appendix 3 2 A D printed circuit board J11 J15 J13 J12 J14...

Page 26: ...20 TN512955 E Appendix 3 3 Display output printed circuit board VR1...

Page 27: ...TN512955 E 21 Appendix 3 4 Analyzer printed circuit board Appendix 3 5 Output printed circuit board CN1 CN5...

Page 28: ......

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