Chapter 4
MAINTENANCE
4.4
REPLACEMENT OF MAJOR PARTS
4-17
4
INS
TRUCT
IO
N
M
ANUAL
4.4
REPLACEMENT OF MAJOR PARTS
The system includes parts that need periodic replacement. The parts should be replaced
as scheduled. Use of parts over their service life can cause a system failure.
WARNING
Direct exposure to electromagnetic waves at close range will have
adverse effects on the human body. When it is necessary to get
close to the antenna for maintenance or inspection purposes,
make sure to turn the indicator power switch to "OFF" or "STBY."
Direct exposure to electromagnetic waves at close range will have
adverse effects on the human body.
When conducting maintenance work, make sure to turn off the
power and unplug the power connector J1 of the display unit so
that the power supply to the equipment is completely cut off.
Some equipment components can carry electrical current even
after the power switch is turned off, and conducting maintenance
work without unplugging the power connector may result in
electrocution, equipment failure, or accidents.
CAUTION
Make sure to shut off the main power before replacing parts.
Failure to comply may result in electrocution or equipment failure.
When replacing magnetrons, make sure to shut off the main power
and let the equipment stand for more than 5 minutes to discharge
the high-voltage circuit.
Failure to comply may result in electrocution.
Make sure to take off your watch when your hand must get close
to the magnetron.
Failure to comply may result in damage to the watch since the
magnetron is a strong magnet.
Do not directly touch the inverter circuit of the LCD display with a
bare hand since high voltage temporarily remains in the circuit
even after the main power is shut off.
Failure to comply may result in electrocution.
Содержание JMA-3300 Series
Страница 2: ......
Страница 16: ...WARNING LABEL MOUNTING POINT xiv NCD 2182 Display Unit ...
Страница 17: ...WARNING LABEL MOUNTING POINT xv NBA 5111 Power Supply NBD 865 Rectifier unit ...
Страница 30: ...GLOSSARY xxviii ...
Страница 46: ...Chapter 1 GENERAL AND EQUIPMENT COMPOSITION 1 5 GENERAL SYSTEM DIAGRAMS 1 16 ...
Страница 47: ...Chapter 2 OPERATIONS 2 1 SCREEN DISPLAY 2 1 2 INSTRUCTION MANUAL Chapter 2 OPERATIONS 2 1 SCREEN DISPLAY ...
Страница 244: ...Chapter 4 MAINTENANCE 4 6 TROUBLE SHOOTING 4 36 ...
Страница 254: ...Chapter 7 SPECIFICATIONS 7 2 SCANNER 7 6 13 Overall Noise Figure 6dB Average 14 Tune AUTO MANUAL ...
Страница 265: ...APPENDIX APPENDIX 1 APPENDIX INSTRUCTION MANUAL APPENDIX Fig A1 NKE 2042 SCANNER INTERCONNECTION DIAGRAM ...
Страница 266: ...APPENDIX APPENDIX 2 Fig A2 NKE 2043 SCANNER INTERCONNECTION DIAGRAM ...
Страница 267: ...APPENDIX APPENDIX 3 APPENDIX INSTRUCTION MANUAL Fig A3 NKE 2062 SCANNER INTERCONNECTION DIAGRAM ...
Страница 268: ...APPENDIX APPENDIX 4 Fig A4 NKE 2062HS SCANNER INTERCONNECTION DIAGRAM ...
Страница 269: ...APPENDIX APPENDIX 5 APPENDIX INSTRUCTION MANUAL Fig A5 NKE 2063 SCANNER INTERCONNECTION DIAGRAM ...
Страница 271: ...APPENDIX APPENDIX 7 APPENDIX INSTRUCTION MANUAL LJ 1 6 6 11 5 17 5 211 7 21 5 0 ...
Страница 272: ...APPENDIX APPENDIX 8 Fig A8 NKE 2063AHS SCANNER INTERCONNECTION DIAGRAM ...
Страница 273: ...APPENDIX APPENDIX APPENDIX INSTRUCTION MANUAL Fig A NKE 2103 4 4HS 6 6HS SCANNER INTERCONNECTION DIAGRAM ...
Страница 274: ...APPENDIX APPENDIX Fig A NCD 2182 DISPLAY UNIT INTERCONNECTION DIAGRAM ...
Страница 275: ...APPENDIX APPENDIX APPENDIX INSTRUCTION MANUAL Fig A PRIMARY POWER SUPPLY DIAGRAM TYPE JMA 3300 6 6 6 ...
Страница 276: ...APPENDIX APPENDIX 1 Fig A1 JMA 3314 INTERCONNECTION DIAGRAM ...
Страница 277: ...APPENDIX APPENDIX 1 APPENDIX INSTRUCTION MANUAL Fig A1 JMA 3334 INTERCONNECTION DIAGRAM ...
Страница 278: ...APPENDIX APPENDIX 1 Fig A1 JMA 3316 HS INTERCONNECTION DIAGRAM ...
Страница 279: ...APPENDIX APPENDIX 1 APPENDIX INSTRUCTION MANUAL Fig A1 JMA 3336 HS INTERCONNECTION DIAGRAM NKE 2063 A HS AHS ...
Страница 280: ...APPENDIX APPENDIX 1 Fig A1 JMA 3340 4 4HS 6 6HS INTERCONNECTION DIAGRAM ...
Страница 297: ......