Skyjack SJ 3220, Service Manual

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SJ3220, SJ3226, SJ4720, SJ4726, SJ4732 223198ABA
Electrical System Section 4 – Troubleshooting Information
6.
Open or defective Base Key Switch S10.
Operate and check switch.
Check continuity between wire #05A and wire #07
on switch (Platform Mode selected).
Replace if defective when operating switch.
7.
Loose or broken wire #08C from Base Key switch
S10 to Control Module CM1 pin #3-1 (enable
signal).
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.
8.
Loose or broken wire #07 from Base Key switch
S10 to platform Emergency Stop switch S4.
Check continuity. Replace if defective.
9.
Open or defective platform Emergency Stop
switch S4.
Close switch by pulling knob out and check switch.
Check continuity between wire #07 and wire #08.
Replace switch if defective.
10.
Loose or broken wire #08 from platform Emergency
Stop switch S4 to Control module CM1 pin #P3-2.
(platform signal)
Check continuity. Test for 24V Input voltage
between wire #08 and wire #02.
Use HMI Diagnostic menu to make sure input P3-2
signal is present.
Replace if defective.
11.
Loose or broken wire #08 from platform
Emergency Stop switch S4 to Lift/Off/Drive switch
S3.
Check continuity. Replace if defective.
12.
Open or defective Lift/Off/Drive switch S3.
Check switch.
Check continuity between wire #08 and wire #12
(Drive Mode selected)
Check continuity between wire #08 and wire #09
(Lift Mode selected)
Replace if no continuity when operating switch.
13.
Loose or broken wire #12 from Lift/Off/Drive
switch S3 to Control Module CM1 pin #P3-6.
(drive signal)
Check continuity. Test for 24V Input voltage
between wire #12 and wire #02.
Use HMI Diagnostic menu to make sure input P3-6
signal is present.
Replace if defective.
14.
Loose or broken wire #09 from Lift/Off/Drive
switch S3 to Control Module CM1 pin #P3-7.
(lift signal)
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.
15.
Loose or broken wire #08 from platform
Emergency Stop switch S4 to Joystick S7.
Check continuity. Replace if defective.