Sakai SW880-1, Руководство по ремонту

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TROUBLESHOOTING
2-6-4. Front and rear vibratory drums cannot perform one-drum vibration
Reference Fig. : 2-6-1
Check point Check/Cause Action
1. Vibrator Solenoid (F)
or (R) (3 each for front
and rear)
Disconnect each harness of vibrator solenoid (F) or (R) (3
each for front and rear) in front or rear drum and measure
resistance of coil.
Standard resistance : 7.2 Ω
If resistance is abnormal, vibrator solenoid (F) or (R) is
faulty.
•
•
Replace vibrator solenoid
(F) or (R).
2. Vibratory Drum
Select Switch
(1) when starter switch is ON, measure voltage between
vibratory drum select switch terminal 1, 4 inlet wires YW
and chassis ground.
Standard voltage: 12 V
(2) when starter switch is ON and vibratory drum select
switch is “
”, measure voltage between vibratory
drum select switch terminal wires and chassis ground.
Vibratory drum select switch terminal 2 outlet wire BrB
and chassis ground.
Vibratory drum select switch terminal 5 outlet wire LB
and chassis ground.
There is no electricity in normal condition.
(3) when starter switch is ON and vibratory drum select
switch is “
”, measure voltage between vibratory
drum select switch terminal 2 outlet wire BrB and
chassis ground.
Standard voltage : 12 V
(4) when starter switch is ON and vibratory drum select
switch is “
”, measure voltage between vibratory
drum select switch terminal 5 outlet wire LB and chassis
ground.
Standard voltage : 12 V
If above item (1) is OK and any of items (2) through (4) is
NG, vibratory drum select switch is faulty.
•
•
•
Replace vibratory drum
select switch.
3. Harness Connecting
Between Terminals
Measure resistance of harness connecting between
terminals.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.