Furuno CSH-23F, CSH-24F manual Adjustment and Check, Hull Unit Check

6. ADJUSTMENT AND CHECK

6.1 Hull Unit Check

1.Press the ON switch to turn on the equipment. Con- firm that the lamps above the ON and c switches light.

2.Confirm that the 5V and UP lamps on the raise/ lower control box are lit.

POWER		TRANSDUCER
OFF	ON

3. Remove the cover of the raise/lower control box				Figure 6-1 Display unit front panel
and check the following voltages:
	Terminal	Terminal No.	Voltage
	TB-D1	7 – 8	+12 V
		1 – 2	180 VAC
	TB-D2	2 – 3	180 VAC
		1 – 3	360 VAC

4.In the raise/lower control box, turn the TEST/NOR- MAL switch to TEST. Press the d switch to con- firm that the transducer lowers. Also, while the transducer is being lowered, check that the MD LED lights when the MD L. SW kicks. Note that the MD L. SW does not stop the transducer when the TEST/ NORMAL switch is in the TEST position.

Figure 6-2 Raise/Lower

control box

5.Press and release the d switch. Confirm that the transducer stops at the moment the switch is released.

6.Press the d switch again. Confirm that the transducer stops at the moment the lower limit switch kicks.

7.Confirm that the c switch operates in a similar manner.

8.Check that LEDs on the panel of the raise/lower control box light as follows:

1)UP, MD and DN LEDs light when corresponding limit switch kicks.

2)UP and DOWN LEDs light while UP and DOWN switches are pressed and extinguish when switches are released.

9.Set the TEST/NORMAL switch to NORMAL.

10.At the display unit, press the d (mid position) switch. Confirm that the lamp above the switch blinks while the transducer is being lowered, a short beep sounds when the mid limit switch kicks, and the lamp lights when the transducer is fully lowered.

11.Press the d switch. Confirm that the lamp above the switch blinks while the transducer is being lowered, a short beep sounds when the mid limit switch kicks, and the lamp lights when the transducer is fully lowered.

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