Skyjack SJIII Series Maintenance & Parts Manual page 91

Probable Cause
4.1-2. All Controls Inoperative From Platform
1. Loose or broken wire #07 from base terminal block
( B-1) to platform emergency stop switch (S4).
2. Open or defective platform emergency stop switch
(S4).
3. Loose or broken wire #7A from platform emergency
stop switch (S4) to key switch (S3).
4. Open or defective key switch (S3).
5. Loose or broken wire #8 from keyswitch (S3) to battery
charge indicator (BCI).
6. Loose or broken wire #8 from platform keyswitch
(S3) to joystick enable switch (S7-6) (ANSI/CSA
only).
7. Defective joystick enable switch (S7-6).
8. Loose or broken wire #8 from battery charge indicator
(BCI) to LIF /DRIVE select switch (S5)
(CE only).
9. Defective LIF /DRIVE select switch (S5).
4.1-3. Lift And Drive Inoperative From Platform Controls
1. Defective neutral switch (S7-1) in joystick controller
(S7).
2. Defective A/B switch (S7-4) or (S7-5) in joystick
controller (S7).
3. Circuit board (PWM) defective.
4. Loose or broken wire #59 from joystick controller
(S7) to platform terminal block ( B-2).
5. Loose or broken wire #59 from platform terminal
block ( B-2) to base terminal block ( B-1).
4.1-4. No Down Or Reverse Only Function From Platform Controls
1. A/B switch (S7-4) in proportional controller open or
defective.
2. Loose or broken wire "A" from proportional controller
(S7) to LIF /DRIVE switch (S5).
3. LIF /DRIVE switch (S5) defective.
4.1-5. No Up Or Forward Only Function From Platform Controls
1. A/B switch (S7-5) in proportional controller open or
defective.
2. Loose or broken wire "B" from proportional controller
(S7) to LIF /DRIVE select switch (S5).
3. LIF /DRIVE select switch (S5) defective.
ECTION 4, Page 4
Troubleshooting Information - Electrical ystem
1. Check continuity. Replace if defective.
2. Close switch. Replace if defective.
3. Check continuity. Replace if defective.
4. Close switch. Replace if defective.
5. Check continuity. Replace if defective.
6. Check continuity. Replace if defective.
7. Check switch. Replace if defective.
8. Check continuity. Replace if defective.
9. Check switch. Replace if defective.
1. Check switch. Replace if defective.
2. Check switch. Replace if defective.
3. Refer to Section 5, Joystick Controller est
Procedure.
4. Check continuity. Replace if defective.
5. Check continuity. Replace if defective.
1. Check switch. Replace if defective.
2. Check continuity. Replace if defective.
3. Check switch. Replace if defective.
1. Check switch. Replace if defective.
2. Check continuity. Replace if defective.
3. Check switch. Replace if defective.
JIII eries - he Compacts
Remedy
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