Skyjack SJKB-40-D Operating Maintenance Instructions & Part List page 63

TROUBLE
NO TELESCOPE
TEND FROM PLATFORM
CONTROLS
NO JIB DOWN FROM
PLATFORM AND BASE
CONTROLS
NO JIB UP FROM PLAT-
FORM AND BASE CON-
TROLS
SECTION 4, Page 12
TROUBLESHOOTING (Cont.)
PROBABLE CAUSE
ELECTRICAL SYSTEM (Cont.)
EX- 1. Loose or broken wire #99 from
platform terminal block TB1 to
telescope switch S16.
2. Defective telescope switch S16.
3. Loose or broken wire #39 from
telescope switch S16 to platform
terminal block TB2.
4. Loose or broken wire #39 from
platform terminal block TB2 to
base terminal block TB3.
1. Loose or broken wire #34 from
base terminal block TB3 to relay
34CR.
2. Loose or broken wire #02 from
relay 34CR to base terminal block
TB3.
3. Defective relay 34CR.
4. Loose or broken wire #09 from
base terminal block TB3 to relay
34CR.
5. Loose or broken wire #34A from
relay 34CR to jib down valve coil
4H-34A.
6. Defective jib down valve coil 4H-
34A.
7. Loose or broken wire #02 from jib
down valve 4H-34A to base
terminal block TB3.
8. Open diode D34.
1. Loose or broken wire #35 from
base terminal block TB3 to relay
35CR.
2. Loose or broken wire #02 from
relay 35CR to base terminal block
TB3.
3. Defective relay 35CR.
4. Loose or broken wire #09 from
base terminal block TB3 to relay
35CR.
5. Loose or broken wire #35A from
relay 35CR to jib down valve coil
4H-35A.
6. Defective jib down valve coil 4H-
35A.
7. Loose or broken wire #02 from jib
down valve 4H-35A to base
terminal block TB3.
8. Open diode D35.
1.
2.
3.
4.
1.
2.
3.
4.
5.
6.
7.
8.
1.
2.
3.
4.
5.
6.
7.
8.
JUN. 1999
REMEDY
Check Continuity. Replace if
defective.
Check Switch. Replace if
defective.
Check Continuity. Replace if
defective.
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 through coil.
Replace if defective.
Check Continuity. Replace if
defective.
Check Diode. 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 through coil.
Replace if defective.
Check Continuity. Replace if
defective.
Check Diode. Replace if defective.
SJKB-40-D, SJKB-40-D/F