KYJACK, Page 5
JIII Conventional eries
143911
ection 4 - Troubleshooting Information
ervice and Maintenance
Electrical ystem (Continued)
2. Contactor C1 defective.
Check contactor. Replace if defective.
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3. Defective pump motor DCM1.
Check motor. Replace if defective.
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4. Loose or broken wire #59 from relay 21CCR
(AN I/C A)
or relay 21ACR
(CE)
to proportional valve
coil 2H-59.
Check continuity. Replace if defective.
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5. Loose or broken wire #02 from proportional valve coil 2H-59 to base terminal block B-1.
Check continuity. Replace if defective.
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6. Defective proportional valve coil 2H-59.
Check continuity through coil. Reading should be 19ohms. Replace if defective.
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4.1-3
All Controls Inoperative From Base Control Console
1. Loose or broken wire #07 from base terminal block to platform emergency stop switch S4.
Check continuity. Replace if defective.
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2. Open or defective platform emergency stop switch S4.
Close switch. Replace if defective.
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3. Loose or broken wire #7A from platform emergency stop switch S4 to base terminal block.
Check continuity. Replace if defective.
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4. Loose or broken wire #7A from base terminal block to base key switch S10.
Check continuity. Replace if defective.
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5. Open or defective base key switch S10.
Close switch. Replace if defective.
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6. Loose or broken wire #10E from base key switch S10 to base up/down switch S2.
Check continuity. Replace if defective.
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7. Loose or broken wire #10E from base terminal block B-1 to CM1 control module pin P2-2.
(CE)
Check continuity. Replace if defective.
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4.1-4
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.
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2. Loose or broken wire #8C or wire #02 from base terminal block to platform emergency stop switch
S4.
Check continuity. Replace if defective.
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3. Open or defective platform emergency stop switch S4.
Close switch. Replace if defective.
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4. Loose or broken wire #8 or wire #02 from emergency stop switch S4 to battery charge indicator
BCI.
Check continuity. Replace if defective.
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5. Loose or broken wire #8 or wire #02 from battery charge indicator BC1 to joystick S7.
Check continuity. Replace if defective.
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6. Defective joystick enable switch S7-6.
Check switch. Replace if defective.
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7. Defective joystick neutral switch S7-1.
Check switch. Replace if defective.
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8. Defective joystick S7.
Check joystick. Replace if defective.
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