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7.3 REPLACEMENT OF MAJOR PARTS
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Replacement of magnetron (V101)
Remove the shield cover of the modulator and check that no charge remains in the high-voltage modulator
circuit. Then, disconnect the lead wire of the magnetron. The magnetron can be demounted by removing the
screws fixing it. When mounting a new magnetron, do not touch the magnet with a screwdriver or put it on an
iron plate. After replacement, connect the lead wire correctly.
Handling of Magnetron under Long-Time Storage
The magnetron that has been kept in storage for a long time may cause sparks and operate unstably when its
operation is started. Perform the aging in the following procedures:
(1) Warm up the cathode for a longer time than usually. (20 to 30 minutes in the STBY state.)
(2) Start the operation from the short pulse range and shift it gradually to the longer pulse ranges. If the
operation becomes unstable during this process, return it to the standby mode immediately. Keep the
state for 5 to 10 minutes until the operation is restarted.
Содержание JMA-610 Series
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Страница 29: ...1 5 1 1 4 EXTERIOR DRAWINGS y Fig 1 1 Exterior Drawing of Scanner Unit Type NKE 316 Unit mm...
Страница 30: ...1 6 Fig 1 2 Exterior Drawing of Processing Unit Type NDC 1486 Unit mm...
Страница 31: ...1 7 1 1 4 EXTERIOR DRAWINGS y Fig 1 3 Exterior Drawing of Operating Unit Type NCE 7882A Unit mm...
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Страница 131: ...SECTION 7 TROUBLE SHOOTING 7 1 FAULT FINDING 7 3 7 2 TROUBLE SHOOTING 7 5 7 3 REPLACEMENT OF MAJOR PARTS 7 7...
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Страница 143: ...SECTION 8 AFTER SALES SERVICE When you Request for Repair Recommended Maintenance Radar Failure Check List...
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Страница 147: ...SECTION 9 DISPOSAL 9 1 DISPOSAL OF THE UNIT 9 1 9 2 DISPOSAL OF USED BATTERIES 9 2 9 3 DISPOSAL OF USED MAGNETRON 9 3...
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Страница 165: ...APPENDIX Fig 1 Block Diagram of JMA 610...
Страница 168: ...Fig 4 Internal Connection Diagram of Scanner Unit NKE 316...
Страница 169: ...APPENDIX Fig 5 Internal Connection Diagram of Control Unit NCM 883...
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