SECTION 4, Page 8
SJIII Series - The Conventionals
129919
4.1-22. Lift Up Inoperative From Base Controls
1.
Defective Up/Down Switch (S2).
2.
Loose or broken wire #14E from Up/Down Switch
(S2) to Diode (D14E-1).
3.
Open Diode (D14E-1).
4.
Loose or broken wire #14E from Up/Down Switch
(S2) to Diode (D14E-2).
5.
Open Diode (D14E-2).
1.
Check switch. Replace if defective.
2.
Check continuity. Replace if defective.
3.
Check Diode. Replace if defective.
4.
Check continuity. Replace if defective.
5.
Check Diode. Replace if defective.
Troubleshooting Information - Electrical System
Probable Cause
Remedy
4.1-23. Lift Down Inoperative From Base Controls
1.
Defective Up/Down Switch (S2).
2.
Loose or broken wire #13 from Up/Down Switch
(S2) to Base Terminal Block (TB-1).
1.
Check switch. Replace if defective.
2.
Check continuity. Replace if defective.
4.1-24. Two Or More Functions At One Time
1.
Shorted Diode.
1.
Check continuity of all Diodes. Replace if defective.
4.1-25. Powered Platform Extension Will Not Extend Or Retract
1.
Lift/Drive Select Switch (S5) not in lift position.
2.
Loose or broken wire #09 from Platform Terminal Block
TB-2 to Powered Platform Enable Switch (S12).
3.
Powered Platform Enable Switch (S12) defective.
4.
Loose or broken wire #09A from Powered Platform
Enable Switch (S12) to Platform Extend/Retract
Switch (S11).
5.
Loose or broken wire #21B from Platform Terminal
Block TB-2 to Base Terminal Block (TB-1).
6.
Open Diode (D21B-1).
7.
Open Diode (D21B-2).
8.
Loose or broken wire #02 from Extend/Valve Coil
(4H-26) to Retract Valve Coil (4H-27) to Platform
Terminal Block (TB-2).
1.
Move switch to lift position.
2.
Check continuity. Replace if defective.
3.
Check switch. Replace if defective.
4.
Check continuity. Replace if defective.
5.
Check continuity. Replace if defective.
6.
Check diode. Replace if defective.
7.
Check diode. Replace if defective.
8.
Check continuity. Replace if defective.
4.1-26. Powered Extension Platform Will Not Extend
1.
Powered Platform Extend/Retract Switch (S11)
defective.
2.
Loose or broken wire #26 from Powered Platform
Extend/Retract Switch (S11) to extend Valve Coil
(4H-26).
3.
Extend Valve Coil (4H-26) defective.
4.
Open Diode (D26).
5.
Loose or broken wire #02 from Extend Valve Coil
(4H-26).
1.
Check switch. Replace if defective.
2.
Check continuity. Replace if defective.
3.
Check continuity through coil, replace if defective.
4.
Check diode. Replace if defective.
5.
Check continuity through coil. Replace if defective.
Summary of Contents for SJIII Compact 3215
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