Daewoo frs20 manual Trouble Diagnosis, Faulty Start F/R lights OFF , F-PCB Power OFF

9. TROUBLE DIAGNOSIS

9-1. Faulty Start (F/R lights OFF , F-PCB Power OFF)

Start

Power cord or Fuse	Y
is disconnected ?
N
1’st power of SMPS	N
is on?
Y
Main PCB Fuse is	Y
disconnected?

N

VoltageN (DC12V/14.5V/5V) on

Main PCB is OK?

Change the Main Fuse

(AC250V 15A)

(In the left side of

machine compartment)

Check power Cord connection from machine compartment and to CN1 of M-PCB.

Change the Fuse

(AC250V 3.15A)

(on the Main PCB)

Y

Wire connection of F-PCB is OK?

N

※Refer to the 5-1. (Power circuit diagram)

Y

Change Main PCB

Checkup and connect

F-PCB wires.

Change F-PCB AS.

※How to replace Front PCB

1)Insert a flat tip driver into the left down groove of panel frame and snap it out smoothly.

2)Separate 2 housings of 10P / 7P from Front PCB. (Do not hold only wires to pull out.)

3)Unscrew (7 points) to remove Front PCB.

*Follow the reverse order when assembling.

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