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Troubleshooting for LED Blinking ( 1 time blink )
Ex. DX900** series
PB
Power
IC
Photo
coupler
Power
IC
Photo
coupler
(TNPA6200)
(
)
TNPA6199
P
Power
IC
Photo
coupler
(*)VLED : The DC level is different by the LCD panel.
VLED2
17-28
9,10
PB2
SRV-VLED2
SRV-VLED1
PB1
VLED1
17-28
5
9,10
BL-ON
SRV-BL-ON
PB3
1
1
P3
16V
Anode
LED
Drive
IC
Cathode
15
Sync/control/...
2,4,6,,,
BL_SOS
A03
P2
A02
1 - 5
1 - 5
16V
11
11
SUB-ON
<A+P+PB> -1
LCD Module
Back
light
LCD Panel
T-CON
board
BL-ON
IC9000
FRC
BL_SOS
1
Tr
(Low=Normal)
IC8000
SUB-ON
A
MTK
56
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