Skyjack SJIII 3220 Operating & Maintenance Manual page 66

TROUBLESHOOTING INFORMATION
TROUBLE
ALL CONTROLS
INOPERATIVE (Cont.)
ALL CONTROLS
INOPERATIVE FROM
PLATFORM (Machines
without Power Deck)
ALL CONTROLS
INOPERATIVE FROM
PLATFORM (Machines
with Power Deck)
LIFT AND DRIVE
INOPERATIVE FROM
PLATFORM CONTROLS
SECTION 4, Page 2
PROBABLE CAUSE
ELECTRICAL SYSTEM
20. Loose or broken wire #59B from Relay
(21CR) to Proportional Valve Coil
(2H-59B).
21. Loose or broken wire #02 from
Proportional Valve Coil (2H-59B) to
Base Terminal Block (TB-1).
22. Defective Proportional Valve Coil
(2H-59B).
1. Loose or broken wire #07 from Base
Terminal Block (TB-1) to Platform
Emergency Stop Switch (S4).
2. Open or defective Platform Emergency
stop switch (S4).
3. Loose or broken wire #7A from
Platform Emergency Stop Switch (S4)
to Key Switch (S3).
4. Open or defective Key Switch (S3).
5. Loose or broken wire #7B from
Keyswitch (S3) to Battery charge
Indicator BCI.
6. Loose or broken wire #7B from Battery
Charge Indicator BCI to Joystick (S7).
1. Loose or broken wire #07 from Base
Terminal Block (TB-1) to Platform
Emergency Stop Switch (S4).
2. Open or defective Emergency Stop
Switch (S4).
3. Loose or broken wire #7A from
Platform Emergency Stop Switch (S4)
to Key Switch (S3).
4. Open or Defective Key Switch (S3).
5. Loose or broken wire #7B from Key
Switch (S3) to Lift/Drive Select Switch
(S5).
6. Defective Lift/Drive Select Switch (S5).
1. Defective Neutral Switch (S7-1) in
Joystick Controller (S7).
2. Defective A/B switch (S74) in Joystick
Controller (S7).
3. Circuit Board (S7-1) defective.
4. Loose or broken wire #59 from Joystick
Controller (S7) to Platform Terminal
Block (TB-2).
5. Loose or broken wire #59 from Platform
Terminal Block (TB-2) to Base Terminal
Block (TB-1).
Complete Revision 99-05-01
REMEDY
20. Check continuity.
defective.
21. Check continuity.
defective.
22. Check continuity through coil.
Reading should be 19ohms. Replace
if defective.
1. Check continuity.
defective.
2. Close switch. Replace if defective.
3. Check continuity.
defective.
4. Close switch. Replace if defective.
5. Check continuity.
defective.
6. Check continuity.
defective.
1. Check continuity.
defective.
2. Close switch. Replace if defective.
3. Check continuity.
defective.
4. Close switch. Replace if defective.
5. Check continuity.
defective.
6. Check switch. Replace if defective.
1. Check switch. Replace if defective.
2. Check switch. Replace if defective.
3. Refer to Section 4, Page 12 P .Q.
Controller Test Procedure.
4. Check continuity.
defective.
5. Check continuity.
defective.
SJIII Series - The CONVENTIONALS
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if
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