75
4. The role No.
J1-6 - and 5-4-2
for the coil of
relay for motor
of pump (KMp)
is OK or not?
4.Repair or replace
16 - pin plug of
controller
5. Check relay
of pump motor
is OK or not?
5. Repair or
replacement the
relay.
6. Check micro -
switche(SU) is
OK or not?
6.Adjust or replace
micro - switche (SU)
7.The pump
motor is normal
or not?
7. repair or replace
the pump motor
8.The hydraulic
valve of the
pump is OK or
not ?(dirty,
plugged,etc.)
8. Clean up the valve
core
9.The hydraulic
oil is
insufficient?
9.Add hydraulic oil
1. The lower
magnet valve
(YV) is damaged
or the role No.
J1-9- and 5-7- is
OK or not?
Cann't lower (others
normal)
2.The lower
magnetic valve
is plugged for
dirty?
NO
Rapair or replace
1.Check the
signal line J1-1 -
and J1-8 is
conducted?
NO
Replace the PCB
board of the controll
handle
2. Check
whether the
voltage between
5-10- and 2-4- is
24V
Repair or replace the
cable in the handle.
1. Check the
snail speed
switch is OK or
not
2. Check the
Protect module
BD-W135/110
and its plug are
OK or not?
Replace or repair it.
3. The PCB
board of the
control handle is
OK or not?
Can lift, but the drive
speed is very slowly
Can forward, not
backward / can
backward, not forward
No
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