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9.6 Adjustment
9.6.1 General adjustment
Adjustment after component replacement
This section describes the adjustment required as a result of replacement of the main
components.
(a) Replacement of magnetron V101 → Tuning preset
(b) Replacement of front end E101 → Tuning preset
9.6.2
Adjusting a scanner unit
Some scanner unit adjustments are necessary, however, no re-adjustments are necessary since the
scanner unit is thoroughly adjusted at the factory. However, if adjustments become necessary as
a result of the operation checking at inspection or fault repair, make the following adjustments.
Since some sections of the modulator (CME-322 or QME-323) generate a high
voltage of about 4000V, no one except service engineers are allowed to touch
inside of the modulator.
There is a risk of dying or getting a serious injury of any person by electric shock.
1. Adjusting AVR output voltage of a modulator
(a) When the radar is in a transmission mode, set the distance range to 12 nautical miles,
connect a voltmeter between J201-13PIN and GND of modulator CME-322 or CME-323,
and adjust the voltage to +8(V) at RV2.
2. Adjusting a tuning indication level of a receiver
(a) Set the tuning mode to manual when it is set to automatic.
(b) Carry out tuning by setting the distance range to 12 nautical miles or more.
High Voltage
152
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