Front Control Trouble Service Flow Chart - Daewoo DM-K40 Service Manual

3.6. Front Control Trouble Service Flow Chart

Front Control Trouble
Check between CN1 and CN903 Connection
Check between CN2 and CON2 Connection
Check U2 Pin14/27/38Voltage
Check U1 Pin1/2/34/35 Voltage
Daewoo DM-K40 Service Manual
OK
OK
OK
SEG Signal
NG
Replace U1
Page 34
NG
NG
NG
See: 3.1
Check U2
OK
OK
Replace U2
Replace
Replace VFD
NG