Skyjack SJKB-40-D Operating Maintenance Instructions & Part List page 68

TROUBLE
UNIT WILL NOT DRIVE
(Cont.)
NOTE: Platform must be
over non steering axle for
these tests.
SJKB-40-D, SJKB-40-D/F
TROUBLESHOOTING (Cont.)
PROBABLE CAUSE
ELECTRICAL SYSTEM (Cont.)
13. Loose or broken wire #62C from
relay 08CR2 to platform terminal
block TB1.
14. Loose or broken wire #62C from
platform terminal block TB1 to
drive potentiometer R2.
15. Loose or broken wire #02 from
base terminal block TB3 to relay
17CR3.
16. Defective relay 17CR3.
17. Loose or broken wire #61 from
relay 17CR3 to base terminal block
TB3.
18. Loose or broken wire #61 from
base terminal block TB3 to
platform terminal block TB2.
19. Loose or broken wire #61 from
platform terminal block TB2 to
drive potentiometer R2.
20. Loose or broken wire #63 from
drive potentiometer to platform
terminal block TB2.
21. Loose or broken wire #63 from
platform terminal block TB2 to
base terminal block TB3.
22. Loose or broken wire #63 from
base terminal block TB3 to terminal
#11 on MDSD board MDSD1.
23. Loose or broken wire #64 from
drive potentiometer R2 to platform
terminal block TB2.
24. Loose or broken wire #64 from
platform terminal block TB2 to
base terminal block TB3.
25. Loose or broken wire #64 from
base terminal block TB3 to terminal
#10 on MDSD board MDSD1.
26. Defective drive potentiometer R2.
27. Loose or broken wire #09 from
base terminal block TB3 to EDA
board EDA1.
28. Blown EDA board fuse F2.
29. Loose or broken wire #02 from
base terminal block TB3 to EDA
board EDA1.
30. Loose or broken wire #98 from
terminal #10 on EDA board EDA1
to base terminal block TB3.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
JUN. 1999
REMEDY
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Relay. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Potentiometer. Replace if
defective.
Check Continuity. Replace if
defective.
Check Fuse. Check for shorted
wiring.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
SECTION 4, Page 17