Skyjack SJKB-40-D Operating Maintenance Instructions & Part List page 62

TROUBLE
NO TELESCOPE
TRACT FROM PLAT-
FORM OR BASE CON-
TROLS
NO TELESCOPE
TEND FROM PLATFORM
OR BASE CONTROLS
NO TELESCOPE
TRACT FROM PLAT-
FORM CONTROLS
SJKB-40-D, SJKB-40-D/F
TROUBLESHOOTING (Cont.)
PROBABLE CAUSE
ELECTRICAL SYSTEM (Cont.)
RE-
1. Loose or broken wire #38 from
base terminal block TB3 to relay
38CR.
2. Loose or broken wire #02 from
relay 38CR to base terminal block
TB3.
3. Defective relay 38CR.
4. Loose or broken wire #09 from
base terminal block TB3 to relay
38CR.
5. Loose or broken wire 38A from
relay 38CR to telescope retract
valve coil 4H-38A.
6. Defective telescope retract valve
coil 4H-38A.
7. Loose or broken wire #02 from
telescope retract valve coil 4H-38A
to base terminal block TB3.
8. Open diode D38.
EX- 1. Loose or broken wire #39 from
base terminal block TB3 to relay
39CR.
2. Loose or broken wire #02 from
relay 39CR to base terminal block
TB3.
3. Defective relay 39CR.
4. Loose or broken wire #09 from
base terminal block TB3 to relay
39CR.
5. Loose or broken wire 39A from
relay 39CR to telescope retract
valve coil 4H-39A.
6. Defective telescope retract valve
coil 4H-39A.
7. Loose or broken wire #02 from
telescope retract valve coil 4H-39A
to base terminal block TB3.
8. Open diode D39.
RE-
1. Loose or broken wire #08 from
platform terminal block TB1 to
telescope switch S16.
2. Defective telescope switch S16.
3. Loose or broken wire #38 from
telescope switch S16 to platform
terminal block TB2.
4. Loose or broken wire #38 from
platform terminal block TB2 to
base terminal block TB3.
1.
2.
3.
4.
5.
6.
7.
8.
1.
2.
3.
4.
5.
6.
7.
8.
1.
2.
3.
4.
JUN. 1999
REMEDY
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.
Check Continuity. Replace if
defective.
Check Switch. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
SECTION 4, Page 11