Service manual

8.14. ATSC POWER
POWER SUPPLY +3V3 FOR MT5112
1.25 x (1+0/100) = 1.25V
POWER SUPPLY +1V2 FOR MT5351
POWER SUPPLY +3V3 FOR MT5351 (ANALOG)
POWER SUPPLY +2V5 FOR MT5351 AND DDR
POWER SUPPLY +3V3 FOR MT5351
GLOBAL SIGNAL
POWER SUPPLY +30V FOR SAMSUNG TUNER
Vout = 1.25 x ( 1 + Rb / Ra )
Ra
Rb
1%
1%
POWER SUPPLY +1V8 FOR MT5112
SCHOTTKY DIODE
20V/3A
NOTES CURRENT RATING.
yc5d18
yc5d18
+5V_TUNER
DV12
DV33
AV33
DV18
5VDD
DV33_DM
+30V_TUNER
GND
DTVDDR_2V5
DV3312,15,17,18
DV1215,18
AV3315,18
DV1813
5VDD12,15
DV33_DM13
GND7,12,13,15,16,17,18
+5V_TUNER7
+30V_TUNER7
DTVDDR_2V516
DV12DV33
VCC
DV33_DM
DV33 AV33
+5V_TUNER
+30V_TUNER
DTVDDR_2V5
5VDD
5VDD
DV18
+5V_TUNER
VCC
C432
0.1U
C0603
R416
11.5K1%
R0603
R423
267K1%
R0603
R522
1.15K 1%
C451
0.1U
C0603
C881
0.1uF
C420
0.1U
C0603
+
C431
100U/16V
CE025063
R520
20K
+
C437
100U/16V
CE025063
C439
0.1U
C0603
I808
AP1510
1
2
3
4
8
7
6
5
FB
EN
OCSET
VCC
VSS
VSS
OUTPUT
OUTPUT
R850
1_3K
C783
0.1U
C0603
R232
0
R0603
+ C317
10U/50V
C880
0.01uF(NC)
L158
10uH SMD
DRWW9*12 0.6mm
C883
0.1U
C0603
I123
Regulator AP1522 SOT23-5/SMD
1
2
34
5
SW
GND
FBSHDN
V_IN
C879
0.01uF(NC)
L153
R121/0603 3A
L0603
+
C785
220u/16v L_ESR
+
C427
100U/16V
CE025063
C784
0.1U
C0603
C429
0.1U
C0603
D151
SR36
C419
0.1U
R849 1k74
L828
30uH
0.7m/m
C786
4.7u/16v 0805
R231
100
R0603
C440
0.1U
C0603
R523
0
R0603
ADJ
OUT
IN
I120
AMC7585-2.5V/TO252
3
2
1
4
I118
AP1510
1
8
2
7
3
64
5
FB
VSS
EN
VSS
OCSET
OutputVCC
Output
C318
0.1U
C0603
R847
100K
R848
3.3K
+ C450
220U/16V
CE050080
C310
0.1U
C0603
+ C803
470U/16V
CE050080
L150
R121/0805 6A
L0805
+ C804
470U/16V
CE050080
D819
SR54
D153
SR54
1 2
+
C438
100U/16V
CE025063
C878
0.1uF
L227
30uH
0.7m/m
+ C417
100U/16V
C426
0.1U
C0603
+ C882
470uF/16V
L829
10 UH SMD
I121
AZ1117/adj
SOT223
1
23
ADJ/GND
OUTIN
R521
3.65K 1%
R519
3.9K
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