All Controls Inoperative From Base Control Console - Skyjack SJ3220 Service Manual

Section 4 – Troubleshooting Information

4.2-3 All Controls Inoperative From Base Control Console

1. Control Module CM1 display is broadcasting an
error message.
2. Loose or broken wire #03A to circuit breaker
CB1 or circuit breaker is open.
3. Loose or broken wire #05 to Base Emergency
Stop switch S28.
4. Open or defective Base Emergency Stop switch
S28.
5. Loose or broken wire #05A from Base
Emergency Stop switch S28 to Base Key switch
S10.
6. Open or defective Base Key Switch S10.
7. Loose or broken wire #08C from Base Key switch
S10 to Control Module CM1 pin #P3-1 (enable
signal).
8. Loose or broken wire #10 from Base Key switch
S10 to Base Lift/Lower switch S2.
9. Loose or broken #10 wire from Base Key switch
S10 to Control Module CM1 pin #P3-5 (Base
signal).
10. Open or defective Lift/Lower switch S2.
223198ABA
98
Check Control Module display screen and follow
instructions to clear error.
Check continuity to circuit breaker. Test circuit
breaker CB1. Replace if defective.
Check continuity. Replace if defective.
Close switch by pulling knob out and check switch.
Replace if defective.
Check continuity. Replace if defective.
Check switch.
Check continuity between wire #05A and wire
#08C on switch (when selected on Base or
Platform)
Check continuity between wire #05A and wire #07
on switch (when selected on Platform only)
Check continuity between wire #05A and wire #10
on switch (when selected on Base only)
Replace switch if no continuity when operating
switch.
Check continuity. Test for 24V Input voltage
between wire #08C and wire #02.
Use HMI Diagnostic menu to make sure input P3-1
signal is present.
Replace if defective.
Check continuity. Replace if defective.
Check continuity. Test for 24V Input voltage
between wire #10 and wire #02.
Use HMI Diagnostic menu to make sure input P3-5
signal is present.
Replace if defective.
Check switch.
Check continuity between wire #10 and wire #14A
on switch (when selected on Up)
Check continuity between wire #10 and wire #13A
on switch (when selected to Dn)
Replace switch if no continuity when operating
switch.
SJ3220, SJ3226, SJ4720, SJ4726, SJ4732
Electrical System