Skyjack SJ3220 Service Manual

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SJ3220, SJ3226, SJ4720, SJ4726, SJ4732223198ABA
Section 4 – Troubleshooting Information Electrical System
4.2-5 No Down Function from Base Control Console
1. Control Module CM1 display is broadcasting an
error message.
Check Control Module display screen and follow
instructions to clear error.
2. Open or defective Lift/Lower switch S2.
Check switch.
Check continuity between wire #10 and 13A on
switch (Dn Mode)
Replace switch if no continuity when operating
switch.
3. Loose or broken wire #13A from Lift/Lower
switch S2 to Control Module CM1 pin #P4-4 (Dn
signal).
Check continuity. Test for 24V Input voltage
between wire #13A and wire #02.
Use HMI Diagnostic menu to make sure input P4-4
signal is present.
Replace if defective.
4. Loose or broken wire #13 from Control Module
CM1 pin #P5-12 to Holding valve coils 2H-13-1
and 2H-13-2.
Check continuity. Test for 12V Output voltage
between wire #13 and wire #02.
Use HMI Diagnostic menu to make sure output
P5-12 signal is present.
Replace if defective.
5. (CE machines only) Loose or broken wire
#13C from Control Module CM1 pin #P2-8 to
Proportional Lowering Valve 2H-13C.
Check continuity. Test for Proportional Output
voltage between wire #13C and wire #02.
Use HMI Diagnostic menu to make sure output P2-8
signal is present.
Replace if defective.
7. Machine overloaded and Overload Lights PL-1
and PL-2 on Emergency Stop buttons ashing
Check machine limits and reduce weight as
required.
Check Pressure Transducers PT1 and Angle
Transducers AT1 and AT2 functionality
Check wire #60 from Control Module CM1 pin
#P1-8 (overloaded signal).
Test for 24V Output voltage between wire #60 and
wire #02.
Use HMI Diagnostic menu to make sure Output
P1-8 signal is present (pulsed).
8. Machine not level.
Move machine and ONLY use on level surface.
Check Control Module CM1 display.
9. Check machine Tilt Procedure.
- Check Control Module CM1 display screen and
perform Tilt Calibration Procedure ONLY if level has
been checked and needs adjustment
10. External or internal fault detected by Control
Module CM1
Check Control Module display screen. Use
Diagnostic Menu to see switch and sensor status.
Correct trouble code as displayed. Replace module
if defective.

Skyjack SJ3220 Specifications

General

Brand	Skyjack
Model	SJ3220
Category	Scissor Lifts
Language	English