Skyjack SJ 3220, Service Manual

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SJ3220, SJ3226, SJ4720, SJ4726, SJ4732 223198ABA
Section 4 – Troubleshooting Information Electrical System
4.2-9 No Up Function from Platform Controls (KC)
1.
Control Module CM1 display is broadcasting an
error message.
Check Control Module display screen and follow
instructions to clear error.
2.
Loose or broken wire #09 from Lift/Off/Drive
switch S3 to Control Module CM1 pin #P3-7.
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.
3.
Lift//Off/Drive switch S3 is set to an incorrect
mode.
Select Lift. Check switch. Replace if defective.
4.
Loose or broken wire #08C from Base Key
Switch S10 to Anti-Overrising Limit switch LS7B
N.C contact.
Check continuity. Replace if defective.
5.
Open or defective Anti-Overrising Limit switch
LS7B.
Check switch.
Check continuity between wire #08C and wire
#52A. N.C. contact on Anti-Overrising Limit switch
LS7B
Replace Limit switch if defective.
6.
Loose or broken wire #52A from Anti-Overrising
Limit switch LS7B to Anti-Overrising Limit switch
LS7C (if equipped).
Check continuity. Replace if defective.
7.
Open or defective Anti-Overrising Limit switch
LS7C (if equipped).
Check switch.
Check continuity between wire #52A and wire #52B
N.C. contact on Anti-Overrising Limit switch LS7C
Replace limit switch if defective.
8.
Loose or broken wire #52B from Anti-Overrising
Limit switch LS7C to Anti-Overrising Limit switch
LS7D (if equipped).
Check continuity. Replace if defective.
9.
Open or defective Anti-Overrising Limit switch
LS7D (if equipped).
Check switch.
Check continuity between wire #52B and wire
#52A. N.C. contact on Anti-Overrising Limit switch
LS7D
Replace Limit switch if defective.
10.
Loose or broken wire #52A from Anti-Overrising
Limit switch LS7D to Anti-Overrising Limit switch
LS7A.
Check continuity. Replace if defective.
11.
Open or defective Anti-Overrising Limit switch
LS7A
Check switch.
Check continuity between wire #52A and wire #51.
N.C. contact on Anti-Overrising Limit switch LS7A
Replace limit switch if defective.