All Controls Inoperative From Platform Control Console; No Up Function From Platform Controls - Skyjack SJIII 3215 Service Manual

Service and Maintenance
Electrical System (Continued)
4. Defective down valve coil 2H-13.
- Check continuity through coil. Replace if defective.
5. Defective lift cylinder holding valve coil 2H-13-1.
- Check continuity through coil. Replace if defective.
6. Loose or broken wire #02 from holding valve coil 2H-13-1 or down valve coil 2H-13 to base terminal
block.
- Check continuity. Replace if defective.
4.1-7

All Controls Inoperative From Platform Control Console

1. Loose or broken wire #8C from base key switch S10 to base terminal block.
- Check continuity. Replace if defective.
2. Loose or broken wire #8C or wire #02 from base terminal block to platform emergency stop switch
S4.
- Check continuity. Replace if defective.
3. Open or defective platform emergency stop switch S4.
- Close switch. Replace if defective.
4. Loose or broken wire #8 or wire #02 from emergency stop switch S4 to battery charge indicator BCI.
- Check continuity. Replace if defective.
5. Loose or broken wire #8 or wire #02 from battery charge indicator BC1 to joystick S7.
- Check continuity. Replace if defective.
6. Defective joystick enable switch S7-6.
- Check switch. Replace if defective.
7. Defective joystick neutral switch S7-1.
- Check switch. Replace if defective.
8. Defective joystick S7.
- Check joystick. Replace if defective.
4.1-8

No Up Function from Platform Controls

1. Loose or broken wire "B" from proportional controller S7 to lift/drive switch S3.
- Check continuity. Replace if defective.
2. Lift/Drive switch S3 defective.
- Check switch. Replace if defective.
3. Defective PWM card on joystick S7.
- Check joystick card. Replace if defective.
4. Loose or broken wire #14 from lift/drive switch S3 to base terminal block.
- Check continuity. Replace if defective.
5. Open or defective diode D14A.
- Check diode. Replace if defective.
6. Loose or broken wire #14 from base terminal block to relay 14CR.
- Check continuity. Replace if defective.
7. Defective low voltage protection resistor RST8.
- Check resistor and make sure it is secure. Replace if defective.
8. Loose or broken wire #14A from base terminal block to up valve coil 3H-14A.
- Check continuity. Replace if defective.
9. Loose or broken wire #02 from base terminal block to up valve coil 3H-14A.
- Check continuity. Replace if defective.
10. Defective up valve coil 3H-14A.
- Check continuity through coil. Replace if defective.
SJIII DC Electric
SJIII 3215 SJIII 3219
165983
Section 4 - Troubleshooting Information
SKYJACK, Page 7