Skyjack SJ20 Service Manual

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SJ20238886ABA
Section 4 – Troubleshooting Information Electrical System
4.2-4 No Lower from Base or Platform
1. Loose or broken wire 13 from lower coil 2H-13 to
machine controller pin A29
Check continuity. Replace if defective.
2. Loose or broken wire 00C from lower coil 2H-13
to machine controller pin A26
Check continuity. Replace if defective.
3. Defective coil 3H-13 Replace coil
4.2-5 No Lift or Lower from Base Controls
1. Loose or broken wire 10 from base key switch
S10 to lift/lower switch S2
Check continuity. Replace if defective.
2. Open or defective key select switch S10 Close switch. Replace if defective
3. Loose or broken wire 10 from base key switch
S10 to machine controller pin B7
Check continuity. Replace if defective.
4.2-6 No Lift from Base Controls
1. Loose or broken wire 14A from lift/lower switch
S2 to machine controller pin B2
Check continuity. Replace if defective.
2. Open or defective lift/lower switch S2 Close switch. Replace if defective
4.2-7 No Lower from Base Controls
1. Loose or broken wire 13A from lift/lower switch
S2 to machine controller pin B6
Check continuity. Replace if defective.
2. Open or defective lift/lower switch S2 Close switch. Replace if defective
4.2-8 No Functions from Platform Controls
1. Loose or broken 08 wire from E-stop switch S4 to lift/
off/drive switch S3
Check continuity. Replace if defective.
2. Loose or broken 08 wire from E-stop switch S4
Joystick pin P-17
Check continuity. Replace if defective.
3. Defective enable switch or wiring on upper contol
joystick
Check wiring and switch. Repair or replace if
defective.
4. Defective ground wire 00 from machine controller
pin P-32 to B-
Check continuity. Replace if defective.
5. Defective Joystick Replace if defective

Skyjack SJ20 Specifications

General

Brand	Skyjack
Model	SJ20
Category	Lifting Systems
Language	English