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How to check the hull unit
1. Press the POWER (|) switch on the control unit to turn on the equipment. Confirm that
" ON" lamp above the POWER switch and the
2. Confirm that the 5V and UP lamps on the raise/lower control box are lit.
3. Remove the cover of the raise/lower control box and use a multimeter to measure the
following voltages:
Terminal
Terminal No.
TB-C101
(1) – (2), (6) – (7)
(2) – (3), (7) – (8)
(1) – (3), (6) – (8)
4. In the raise/lower control box, set the TEST/NORMAL switch to TEST. Press the
[DOWN] switch to confirm 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.
5. Press and release the [DOWN] switch. Confirm that the transducer stops at the moment
the switch is released.
6. Press the [DOWN] switch again. Confirm that the transducer stops at the moment the
lower limit switch kicks.
7. Confirm that the [UP] switch operates in a similar manner.
Transducer switches of the control unit
Voltage
220 VAC
220 VAC
220 VAC
TEST
OFF
NORMAL
UP
Control unit (in hull unit)
switch light.
5V
L.SW
UP MD DN
DOWN
3-3
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