10. Troubleshooting
10-1) When Power is not On,
1. Before repair, check whether POWER CORD is normally connected.
2. Check using the following information.
Pre-Check
Snapping of 220 V AC FUSE ?
START
Replacement of FUSE
Connection of ends of
POWER CORD
DC-TRANS
1st power
is supplied?
Check of wire assembly
connection
DC-TRANS 2nd
power is supplied?
Replacement of
DC-TRANS
Snapping of FUSE on
MAIN PCB?
Replacement of FUSE
(AC 220 V 500 mA)
DC 5V on MAIN PCB
is coming out?
Repair Power part on PCB
(Replacement of REG 7805)
Voltage measurement
of REG 7085 OUT end
DC 12V on MAIN PCB
is coming out?
Repair Power part on PCB
(Replacement of REG 7812)
Wire connection of
PANEL PCB is normal?
Repair by Wire Connection
(Refer to 1)
LEAD WIRE CABI, DOOR
(Connect at hinge-upp)
PANEL PCB is normal?
Replacement of PANEL
PCB
RESET IC (ICO2) OUTLET
is DC 5V?
Replacement of RESET IC
NORMAL
Y
N
N
Y
N
Y
Y
N
N
Y
N
Y
N
Y
N
Y
N
Y
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