Suzuki S-1800H80/180, Technical Manual

Page: 33 / 123

Connect the digital tester to the 15V and GND-1 check pins and adjust VR3 so that the voltage is 15.0V.
Connect the digital tester to the 70V and GND-1 check pins and adjust VR2 so that the voltage is 70.0V, when J3
connector is not connected.
Connect the digital tester to the 12V and GND-1 check pins and verify the voltage is 12.0±0.6V.
Connect the digital tester to the 5V-1 and GND-1 check pins and verify the voltage is 5.0±0.25V.
Connect the digital tester to the 5V-2 and GND-2 check pins and verify the voltage is 5.0±0.25V.
Connect the oscilloscope to the FRQ and GND-P check pins and adjust the waveforms at VR1 so that the below
is shown.
The value of frequency counter is 115.0 kHz.
8.69μsec（115.0 kHz）
Connect the oscilloscope to the 70V and GND-1 check pins and the Dummy Load between the J3-No.4 (70V) and
No.3 (GND).
And adjust VR4 voltage rate that starts to degrease at 150Ω and keeps it not to degrease at 160Ω.
Reference: Power Reduction Control (TX POWER)
TX POWER Voltage (V)
C
50V
±
5
％（
approx.47
〜
53V
）
B
31V
±
10
％（
approx.28
〜
34V
）
A
21V ± 20 ％（ approx.16 〜 25V ）
-32-
Adjust the voltage, 70V on the Power Supply PCB (No.703) for S-1800 Hull Unit
（Reckless adjustment may cause serious problem.）