Fujitsu AW*Z24LBC Service Instruction page 46

Does not operate at all (Operation Lamp and Timer Lamp do not light up)
[Check Point]
(1) Is the input power voltage from the exclusive circuit AC outlet normal?
(2) Is the AC plug inserted to the AC outlet securely and not loose?
(3) Does not connected cable do wrong wiring?
(4) Check if each connector is inserted securely.
[Checking Flow Chart]
Is AC input voltage from AC outlet normal ?
Is AC voltage between W1 and 4pin of K1 normal?
Is AC voltage between VA 1 normal?
Is DC voltage between terminal of C4 normal?
Is DC voltage between terminals of C12 & C13 normal?
Is DC voltage between terminals of C15 normal?
Is DC voltage between terminals of C66 normal?
Is DC voltage between terminals 3 & 4 of IC19 normal?
Controller PCB defective
YES (AC230V)
YES (AC230V)
YES (AC230V)
YES (AC280~420V)
YES (C12:DC20, C13: DC13.5V
YES (DC7V)
YES (DC15V)
YES (DC5Vp-p, Pulse wave of 60Hz)
07-01
NO
Fault of an input power supply.
NO
Temp fuse defective
NO
Switching power circuit
(F1, VA1 defective)
NO
Switching power circuit
(D1, R1 defective)
NO
Switching power circuit
(IC5, T1 or IC8,11 defective)
(IC5, T1, IC20 defective)
1V)
NO
IC3 defective
NO
IC17 defective
NO
IC19 defective