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Section 16 Failures and After-Sale Services
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Section 16
Failures and After-Sale
Services
16.1 Failure Detection
Semiconductor circuits can be considered to be almost free from defective semiconductors and/or
performance deterioration except when there are design and inspection errors, or external and human
induced causes. Generally, the causes of comparably frequent failures include line disconnection due
to humidity of the high resistor, failure of the variable resistor as well as contact failures of switches and
relays.
In addition to faulty parts, faulty adjustments (especially faulty tuning) or faulty maintenance (especially
faulty cable contact) occasionally make up causes of failures; thus, it is effective to reinspect or
readjust these items.
16.1.1 About alerts
Failures can be detected from alerts.
For details on alerts, please refer to "Appendix B, Alert List."
16.1.2 Alert description
For a description of alerts to be displayed, please refer to "Appendix B, Alert List."
16.1.3 Fuse inspection
Because there is a specific cause for any fuse meltdown, it is necessary to check the related circuits
even if there is no abnormality after changing a fuse. However, please give consideration that the fuse
meltdown characteristics vary significantly. The following table shows a list of the fuses used in this
unit.
List of Fuses Used
Placement Location
Part No.
Rated current
Protection circuit
Model name
Radar processing unit
(JMR-5404-X,
JMR-5406-X)
F2
3.15A
I/F circuit
ST4-3.15AN1
Radar processing unit
(JMR-5406-X)
F3
5A
I/F circuit
ST4-5AN1
Radar processing unit
(JMR-5410-4X/4XH/
6X/6XH)
F2
5A
Input/output circuit
(CMH-2452)
PC4401
ST4-5AN1
F3
10A
ST6-10AN1
Radar processing unit
(JMR-5425-7X/9X/6XH,
JMR-5430-S, JMR-5472-S,
JMR-5482-S/SH)
F2
10A
Input/output circuit
(CMH-2452)
PC4401
ST6-10AN1
F3
10A
ST6-10AN1
Summary of Contents for JMR-5410-4X
Page 2: ......
Page 25: ...xxiii NKE 2255 7 9 6HS Scanner Unit Warning Label ...
Page 27: ...xxv NKE 2103 4 4HS Scanner Unit NKE 2103 6 6HS Scanner Unit NKE 2255 7 9 6HS Scanner Unit ...
Page 54: ...Contents 20 ...
Page 68: ...Section 1 Overview 1 14 Outline Drawing of Radar Antenna NKE 2632 A ...
Page 70: ...Section 1 Overview 1 16 Outline Drawing of Radar Antenna NKE 2043 NKE 2043 ...
Page 72: ...Section 1 Overview 1 18 Outline Drawing of Radar Antenna NKE 2103 4 4HS ...
Page 74: ...Section 1 Overview 1 20 Outline Drawing of Radar Antenna NKE 2255 7 ...
Page 76: ...Section 1 Overview 1 22 Outline Drawing of Radar Antenna NKE 2255 6HS ...
Page 78: ...Section 1 Overview 1 24 Outline drawing of 19inch Display NWZ 214 NWZ 214 ...
Page 80: ...Section 1 Overview 1 26 Outline Drawing of Process Unit NDC 1678 NDC 1678 ...
Page 82: ...Section 1 Overview 1 28 Outline Drawing of Trackball Operation Unit NCE 5605 Option ...
Page 84: ...Section 1 Overview 1 30 Outline Drawing of Junction Box NQE 1143 ...
Page 86: ...Section 1 Overview 1 32 Outline Drawing of 19inch Desktop Frame CWB 1659 ...
Page 88: ...Section 1 Overview 1 34 Outline Drawing of Interswitch Unit NQE 3141 8A Option ...
Page 126: ......
Page 214: ...Section 4 Range and Bearing Measurement Methods 4 32 ...
Page 244: ...Section 5 Basic Operation of the Radar 5 30 ...
Page 324: ...Section 8 Monitoring a Dragging Anchor 8 8 ...
Page 374: ...Section 11 Setting up Screen View 11 20 ...
Page 520: ...Section 15 Maintenance Inspection 15 70 ...
Page 546: ...Section 16 Failures and After Sale Services 16 26 ...
Page 590: ...Appendix A Radar Antenna Display Unit Block Diagrams A 8 A 1 8 NKE 2255 7 9 6HS ...
Page 592: ...Appendix A Radar Antenna Display Unit Block Diagrams A 10 A 1 10 NKE 2063A ...
Page 596: ...Appendix A Radar Antenna Display Unit Block Diagrams A 14 A 2 3 NCE 5794 operation unit ...
Page 622: ...Appendix D Menu List and Materials D 8 Tools VHF Call VHF1 Call VHF2 Call VHF3 Call ...
Page 687: ......