Case 580SR Service Manual page 348

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282
All LEDs green
and OK
Repair or
replace
SECTION 21 - TRANSMISSION
T-LED Blinks
N-LED Blinks in phase
Select neutral and push kickdown
button (F9) 2 red - 5 orange
YES
Direction modulator open
NO
circuit
YES
Check solenoid
YES
resistance: is it faulty?
NO
Repair or
Check internal and external wiring of the direction
YES
replace
modulation solenoid: are they faulty?
Key on power
YES
NO
YES
(F10)
2 red - 6
NO
red
YES
Direction modulator short
circuit
YES
Check solenoid resistance:
is it faulty?
YES
NO
Replace the
powershift lever unit
1
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No fault
Other non critical
output fault, F7 or F8
NO
NO
F28374