Samsung T220M Service Manual page 65

4-9-1. Circuit diagrams and waveforms
displayed on the monitor
57 VCOM0
58 AVDD_ADC
59 CVBSOUT1
60 CVBSOUT0
61 GND
SIF0P
62
63 AVDD_SIF
64 SIF1P
FGND
C5091
R5074
C5094
R5076
C5100
R5081
C5101
R5078
FGND
AMP_RESET
AUMCKO
DVDD_PLL
CLOSE TO IC
AUSD
AUWS
AUSCK
SDA1
SCL1
BD2005
1
BEAD_CHIP
BD2006
1
BEAD_CHIP
MDATA(0:15)
FGND
RA5032
1 2
2.2NF 50V
7 8
1 2 22KOHM 1/10W
5 6
1 2
2.2NF 1/10W
3 4
1 2 22KOHM 50V 1/16W
1 2
10KOHM
7 8
5 6
1 2 2.2NF 50V
3 4
1 2 22KOHM 1/10W 1/16W
1 2
2.2NF 50V 10KOHM
1 2
1 2
22KOHM 1/10W RA5033_DE
B12VS
CLOSE TO IC
BD2001
C2001
1 2 1
1NF 50V
BEAD_CHIP
C2002
1
C2003
220UF
1NF
35V
CLOSE TO IC
C2006
B3.3VD 1 2
22NF 50V
C2008
1 2
22NF 50V
1
C2011 BST1A
2 1 2
R2017 VDR1A
1 2 3
1UF 10V
/RESET
1 2 4
IC2005
AD
100OHM 1/10W
5
C2012 VSS_
100PF 50V
6
NTP-3000
CLK_
7
C2013 CLK_
1 2 8
VDD_
9
100NF 25V
MGND1
DGNDPLL
10
AGNDPLL
11
LFM
AVDD_PLL 12
FGND
AVDDPLL
13
DVDDPLL
14
TEST0
C2018 R2016
1 2 1 2
1NF 50V 3.3KOHM 1/10W
C2019
1 2
D2009
2
100PF 50V
LL4148
75V
R2014
1 2
100OHM 1/10W
1 2
1KOHM 1/10W
R2015
B1.8V_AMP
B1.8V_AMP
AVDD_PLL
FGND
FGND
2
DVDD_PLL
2
(No Sound)
A3.3V
R2001
C2079
1 2 1 2
4.7OHM 1/10W
1NF 50V
CLOSE TO IC
FGND
R2002
2 1 2
CHASSIS GND
4.7OHM 1/10W
R2003
2 1 2
50V 4.7OHM
1/10W
C2039 R2006
1 2 1 2
1NF 50V 4.7OHM 1/10W
CLOSE TO IC
BD2004
FGND
2
C2007
1 2
BEAD_CHIP
C2038
1UF 10V 220UF
CLOSE TO IC
35V
FGND
C2035 R2008
1 2 1 2
42
4.7OHM
NC
1NF 50V
41
1/10W
VDR2A
40
BST2A
39
PGND2A
38
PGND2A
37
OUT2A
36
OUT2A
35
PVDD2A C2036
34 1 2
PVDD2A
33
PVDD2B
32 100NF 1 25V 2
PVDD2B
31
OUT2B
100NF 25V
30
OUT2B C2037
29
PGND2B
FGND
C2025 R2012
FGND
1 2 1 2
1 2
1NF 50V 4.7OHM 1/10W
CLOSE TO IC
22NF 50V
C2024
1 R2013
2 1
AMP_MUTE
0OHM 1/10W
FGND
when no screen is
BD2002
SPK_R
SPK_R+
1 2
SPK_R_
SPK_R-
SPK_L
SPK_L+
SPK_L_
BEAD_CHIP
SPK_L-
SPK_L
FGND
SPK_L
BD2003
1 2
SPK_L_
SPK_OUT
BEAD_CHIP
B12VS
1
C2034 R2007
1 2 1 2
1NF 50V 4.7OHM
1/10W
BD2007
CHASSIS GND
FGND
1 2
BEAD_CHIP
FGND
BD2008
1 2
BEAD_CHIP
C2026 R2011
1 2 1 2
1NF 50V 4.7OHM 1/10W
FGND
4. Troubleshooting
CN2001
1
2
3
4
CN_S_004
SPK_R
SPK_R
SPK_R_
4-23