SECTION 4, Page 13
SJKB-40-D, SJKB-40-D/F
JUN. 1999
TROUBLESHOOTING (Cont.)
TROUBLE
PROBABLE CAUSE
REMEDY
ELECTRICAL SYSTEM (Cont.)
NO JIB UP OR DOWN
FROM PLATFORM CON-
TROLS
1.
Loose or broken wire #08 from
platform terminal block TB3 to jib
up/down switch S18.
2.
Defective jib up/down switch S18.
1.
Check Continuity. Replace if
defective.
2.
Check Switch. Replace if
defective.
NO JIB DOWN FROM
PLATFORM CONTROLS
1.
Defective jib up/down switch S18.
2.
Loose or broken wire #34 from jib
up/down switch S18 to platform
terminal block TB2.
3.
Loose or broken wire #34 from
platform terminal block TB2 to
base terminal block TB3.
1.
Check Switch. Replace if
defective.
2.
Check Continuity. Replace if
defective.
3.
Check Continuity. Replace if
defective.
NO JIB UP FROM PLAT-
FORM CONTROLS
1.
Defective jib up/down switch S18.
2.
Loose or broken wire #35 from jib
up/down switch S18 to platform
terminal block TB2.
3.
Loose or broken wire #35 from
platform terminal block TB2 to
base terminal block TB3.
1.
Check Switch. Replace if
defective.
2.
Check Continuity. Replace if
defective.
3.
Check Continuity. Replace if
defective.
NO PLATFORM ROTATE
LEFT FROM PLATFORM
OR BASE CONTROLS
1.
Loose or broken wire #36 from
base terminal block TB3 to relay
36CR.
2.
Loose or broken wire #02 from
relay 36CR to base terminal block
TB3.
3.
Defective relay 36CR.
4.
Loose or broken wire #09 from
base terminal block TB3 to relay
36CR.
5.
Loose or broken wire #36A from
relay 36CR to platform rotate left
valve coil 4H-36A.
6.
Defective platform rotate left valve
coil 4H-36A.
7.
Loose or broken wire #02 from
platform rotate left valve coil 4H-
36A to base terminal block TB3.
8.
Open diode D36.
1.
Check Continuity. Replace if
defective.
2.
Check Continuity. Replace if
defective.
3.
Check Relay. Replace if
defective.
4.
Check Continuity. Replace if
defective.
5.
Check Continuity. Replace if
defective.
6.
Check Continuity through coil.
Replace if defective.
7.
Check Continuity. Replace if
defective.
8.
Check Diode. Replace if
defective.
Содержание SJKB-40-D
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