KYJACK, Page 6
JIII Conventional eries
143911
ection 4 - Troubleshooting Information
ervice and Maintenance
Electrical ystem (Continued)
4.1-5
No Drive or Up Function from Platform or Base Controls (CE only)
1. Defective tilt relay 28CR1 or Aux. tilt relay 28ECR1.
Check relay. Replace if defective.
-
2. Loose or broken wire #02 from base terminal block to tilt relay 28CR1 or Aux. tilt relay 28ECR1.
Check continuity. Replace if defective.
-
3. Loose or broken wire #28 from CM1 control module pin P3-4 to tilt relay 28CR1.
Check continuity. Replace if defective.
-
4. Loose or broken wire #28E from CM1 control module pin P3-6 to Aux. tilt relay 28ECR1.
Check continuity. Replace if defective.
-
5. Loose or broken wire #19 from base terminal block to Aux. tilt relay 28ECR1.
Check continuity. Replace if defective.
-
6. Loose or broken wire #19A from Aux. tilt relay 28ECR1 to tilt relay 28CR1.
Check continuity. Replace if defective.
-
7. Loose or broken wire #19B from tilt relay 28CR1 to base terminal block.
Check continuity. Replace if defective.
-
8. Loose or broken wire #19B from base terminal block to motor contactor C1.
Check continuity. Replace if defective.
-
4.1-6
No Down or Reverse Only Function from Platform Controls
1. Loose or broken wire “A” 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 #13 down or #15 reverse from lift/drive switch S3 to base terminal block.
Check continuity. Replace if defective.
-
4.1-7
No Up or Forward Only Function from Platform Control Console
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 up or #16 forward from lift/drive switch S3 to base terminal block.
Check continuity. Replace if defective.
-
4.1-8
No Up Function from Platform or Base Control Console
1. Loose or broken wire #14 from base terminal block to up valve coil 3H-14.
Check continuity. Replace if defective.
-
2. Defective up valve coil 3H-14.
Check continuity through coil. Replace if defective.
-
3. Open diode D14.
Check diode. Replace if defective.
-
4. Open diode D21A
(AN I/C A)
or D21
(CE)
.
Check diode. Replace if defective.
-
5. Machine not level. (Above high speed limit switch)
Use on level surface.
-
