Samsung T23A750 - Page 29

4-9
4. Troubleshooting
4-3-1. Circuit diagrams and waveforms (HDMI No Screen) when no screen is
displayed on the monitor
HDMI INPUT 1
BZB84-C6V2
6.2
TP
EXC28CG900U
MMBD4148SE
4.7KOHM
DGND DGND
47KOHM
DDC_5V_VCC
HMR41-AK5200
DGND
DEFAULT_RESISTOR_3300OHM_2_1
4.7KOHM
A3.3V_PW
DGND
10V
DGND
100
MMBD4148SE
100
100OHM
ADUC20S02010
10OHM 10OHM
DGND
20
22OHM
100NF
EXC28CG900U
DGND
R621
R620
R690_DD R689_DD
FT601
FT602
CN602
RA602
R624
R627
D613
TP604
VT604
D601 D602
C617
6G5>
6E2< 6E2<
6E2<
6E2< 6E2<
6E2<
6E2<
6H5<
6E2<
6H5<
HDMI1_5V
HDMI1_HPD
SCL_DOWN HDMI1_DDC_SCL
HDMI1_RXCLK+
HDMI1_RXCLK- HDMI1_RX2- HDMI1_IDENT HDMI1_RX0+ HDMI1_RX1- HDMI1_RX1+ HDMI1_RX0- SDA_DOWN HDMI1_RX2+
HDMI1_DDC_SDA
HDMI_CEC
8 7 6 54
3 2 1
8 7 6 54
3 2 1
MGND4 MGND3
MGND2 MGND1
9 8 7 6 5 4 3 2 19 18 17 16 15 14 13 12 11 10 1
4 2
3 1