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2.1.9.3 Flowmeter Backlight Board
Flowmeter backlight board is to light the auxiliary flowmeter and backup flowmeter. The backup
flowmeter is controlled by the top light board switch. When the switch of top light board is set to
ligh-light level or low-light level, the auxiliary light lights; otherwise, the auxiliary light is out.
The backup flowmeter is controlled by the EFCS VCM. When the backup flow control system
powers on, the auxiliary light lights; otherwise, the auxiliary light is out.
J1, power supply port
Definition of flowmeter backlight board J1
Pin No. Signal Name Discription Note
1)
VPP 12V power supply /
2)
Lighting Control signal /
3)
GND Ground /
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