Yamaha YXR70FX, Руководство по обслуживанию

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ELEC
CHECKING SWITCH CONTINUITY
EBS01028
CHECKING SWITCH CONTINUITY
Check each switch for continuity with the
pocket tester. If the continuity reading is incor-
rect, check the wiring connections and if nec-
essary, replace the switch.
NOTICE
_
Never insert the tester probes into the cou-
pler terminal slots
1
. Always insert the
probes from the opposite end of the cou-
pler, taking care not to loosen or damage
the leads.
TIP:
_
• Before checking for continuity, set the pocket
tester to “0” and to the “
Ω ×
1” range.
• When checking for continuity, switch back
and forth between the switch positions a few
times.
The terminal connections for switches (e.g.,
main switch) are shown in an illustration simi-
lar to the one on the left.
The switch positions
a
are shown in the far
left column and the switch lead colors
b
are
shown in the top row in the switch illustration.
TIP:
_
“ ” indicates a continuity of electricity
between switch terminals (i.e., a closed circuit
at the respective switch position).
The example illustration on the left shows
that:
There is continuity between brown/red and
red/black when the switch is set to “ON”.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
R / B
Br / R
Br / R
L / Y
OFF
Br / R R / B L / Y Br / R
ON
START
b
a