Drv Board Adjustment (Fs-2575, -5075) - Furuno FS-1575 Service Manual

5.7.2 DRV Board Adjustment (FS-2575, -5075)

Type of
Model
PA Board
FS-5075 05P0866A
FS-2575 05P0866B
PA
FS-2575 DRV Board Arrangement
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Table 5.7.2 List of Adjustment Points on DRV Board
Adjustment VR
R79 PA IC bias adjustment
DRIV (Q2-Q3) bias
R78
adjustment
PRE-DRIV (Q1) bias
R77
adjustment
Same as above Same as above
DRV
Fig. 5.7.10 DRV Board Arrangement
5-40
5.7 Board Adjustment
Function Adjusted Value
500 mA at 24V
100 mV at R21
75 mV at R11/87
Same as above
PA2
PA1
DRV
FS-5075 DRV Board Arrangement