825
8.4.1 Parts Required for Periodic Replacement
Here are parts required for periodic replacement
Part name
Interval
1. Magnetron
4000 hours
2. Motor
10000 hours
3. LCD backlight
50000 hours
4. Fan motor
20000 hours
5. Backup battery
5 years
8.4.2 Replacement of magnetron
Before replacing the magnetron, turn off the main power source, wait for five minutes or more, and confirm
that no charge remains in the high-voltage modulator circuit.
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 procedure:
(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-5212-4
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Страница 18: ... xii NKE 2103 6 6HS Scanner Unit NKE 2254 7 9 6HS Scanner Unit Warning Label Warning Label ...
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Страница 45: ...1 4 EXTERIOR DRAWINGS 1 6 1 y Fig 1 1 Exterior Drawing of Scanner Unit Type NKE 2103 4 ...
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Страница 47: ...1 4 EXTERIOR DRAWINGS 1 8 1 y Fig 1 3 Exterior Drawing of Scanner Unit Type NKE 2254 7 ...
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Страница 49: ...1 4 EXTERIOR DRAWINGS 1 10 1 y Fig 1 5 Exterior Drawing of Monitor Unit Type NWZ 164 ...
Страница 50: ...1 11 Fig 1 6 Exterior Drawing of Processor Unit Type NDC 1460 ...
Страница 51: ...1 4 EXTERIOR DRAWINGS 1 12 1 y Fig 1 7 Exterior Drawing of Keyboard Unit Type NCE 7699A ...
Страница 52: ...1 13 Fig 1 8 Exterior Drawing of NSK Unit Type NCT 4106A ...
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Страница 477: ...Figure 8 NKE 2254 Interconnection Diagram of Scanner Unit ...
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