SECTION 4, Page 8
SJ-600 Series Engine Powered
112715
June 2001
ELECTRICAL SYSTEM
TROUBLESHOOTING INFORMATION
TROUBLE
PROBABLE CAUSE
REMEDY
1. Defective steer left switch (S7-3) in
joystick controller (S7).
2. Loose or broken wire #24 from steer
left switch (S7-3) to platform terminal
block.
3. Loose or broken wire #24 from
platform terminal block to relay
(24CR).
4. Defective relay (24CR).
5. Loose or broken wire #04 from base
terminal block to relay (24CR).
6. Loose or broken wire #24A from
relay (24CR) to base terminal block.
7. Loose or broken wire #02 from relay
(24CR) to base terminal block.
8. Loose or broken wire #24A from
base terminal block to steer left valve
coil (4H24A).
9. Defective steer left valve coil (4H24A).
10. Loose or broken wire #02 from steer
left valve coil (4H24A) to base terminal
block.
11. Open diode (D24A).
1. Defective drive/reverse switch (S7-4)
in joystick controller (S7).
2. Defective joystick controller (S7).
3. Loose or broken wire #15 from
joystick (S7) to platform terminal
block.
4. Loose or broken wire #15 from
platform terminal block to relay
(15CR).
5. Defective relay (15CR).
6. Loose or broken wire #02 from relay
(15CR) to base terminal block.
7. Loose or broken wire #04 from base
terminal block to relay (15CR).
8. Loose or broken wire #15A from
relay (15CR) to time delay relay
(1TD).
9. Defective time delay relay (1TD).
10. Loose or broken wire #15B from time
delay relay (1TD) to reverse valve coil
(4H15B).
11. Defective reverse valve coil (4H15B).
12. Loose or broken wire #02 from
reverse valve coil (4H15B) to base
terminal block.
13. Open diode (D15A-1) or (D15A-2).
1. Defective drive forward switch (S7-5)
in joystick controller (S7).
2. Defective joystick controller (S7).
1. Check switch. Replace if defective.
2. Check continuity. Replace if
defective.
3. Check continuity. Replace if
defective.
4. Check relay. Replace if defective.
5. Check continuity. Replace if
defective.
6. Check continuity. Replace if
defective.
7. Check continuity. Replace if
defective.
8. Check continuity. Replace if
defective.
9. Check coil. Replace if defective.
10. Check continuity. Replace if
defective.
11. Check diode. Replace if defective.
1. Check switch. Replace if defective.
2. Check joystick. Replace if defective.
3. Check continuity. Replace if
defective.
4. Check continuity. Replace if
defective.
5. Check relay. Replace if defective.
6. Check continuity. Replace if
defective.
7. Check continuity. Replace if
defective.
8. Check continuity. Replace if
defective.
9. Check relay. Replace if defective.
10. Check continuity. Replace if
defective.
11. Check coil. Replace if defective.
12. Check continuity. Replace if
defective.
13. Check diodes. Replace if defective.
1. Check switch. Replace if defective.
2. Check joystick. Replace if defective.
STEER LEFT
INOPERATIVE
REVERSE DRIVE
INOPERATIVE
FORWARD DRIVE
INOPERATIVE
Содержание SJ-7027
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