No Up Function From Platform Controls (Kc) - Skyjack SJ3220 Service Manual

Section 4 – Troubleshooting Information

4.2-9 No Up Function from Platform Controls (KC)

1. Control Module CM1 display is broadcasting an
error message.
2. Loose or broken wire #09 from Lift/Off/Drive
switch S3 to Control Module CM1 pin #P3-7.
3. Lift//Off/Drive switch S3 is set to an incorrect
mode.
4. Loose or broken wire #08C from Base Key
Switch S10 to Anti-Overrising Limit switch LS7B
N.C contact.
5. Open or defective Anti-Overrising Limit switch
LS7B.
6. Loose or broken wire #52A from Anti-Overrising
Limit switch LS7B to Anti-Overrising Limit switch
LS7C (if equipped).
7. Open or defective Anti-Overrising Limit switch
LS7C (if equipped).
8. Loose or broken wire #52B from Anti-Overrising
Limit switch LS7C to Anti-Overrising Limit switch
LS7D (if equipped).
9. Open or defective Anti-Overrising Limit switch
LS7D (if equipped).
10. Loose or broken wire #52A from Anti-Overrising
Limit switch LS7D to Anti-Overrising Limit switch
LS7A.
11. Open or defective Anti-Overrising Limit switch
LS7A
223198ABA
106
Check Control Module display screen and follow
instructions to clear error.
Check continuity. Test for 24V Input voltage
between wire #09 and wire #02.
Use HMI Diagnostic menu to make sure input P3-7
signal is present.
Replace if defective.
Select Lift. Check switch. Replace if defective.
Check continuity. Replace if defective.
Check switch.
Check continuity between wire #08C and wire
#52A. N.C. contact on Anti-Overrising Limit switch
LS7B
Replace Limit switch if defective.
Check continuity. Replace if defective.
Check switch.
Check continuity between wire #52A and wire #52B
N.C. contact on Anti-Overrising Limit switch LS7C
Replace limit switch if defective.
Check continuity. Replace if defective.
Check switch.
Check continuity between wire #52B and wire
#52A. N.C. contact on Anti-Overrising Limit switch
LS7D
Replace Limit switch if defective.
Check continuity. Replace if defective.
Check switch.
Check continuity between wire #52A and wire #51.
N.C. contact on Anti-Overrising Limit switch LS7A
Replace limit switch if defective.
SJ3220, SJ3226, SJ4720, SJ4726, SJ4732
Electrical System