Toshiba MW26G71 Service Manual page 105

A B
8
7
6
C1565
1 B
L1508
15uH
5.0
BUFFER
C1537
Q1501
2SC3052
3.7 15P CH
3.1
L1509
R1515
680 15uH
W836
5
4
C1567
1 B
L1511
15uH
5.0 BUFFER
C1548
Q1503
3.7
2SC3052
3
15P CH
3.1
L1512
R1522
C1547
680 15uH
0.1 B
FROM/TO IN/OUT/REGULATOR
GND
2
1
A B
G-37
C
DIGITAL COMB SCHEMATIC DIAGRAM
R1510
560
1.2 0 1.6 2.3 3.2 2.9 3.2
80 79 78 77 76 75 74
C1532
0.9
C1533 0.01 B
1.7
47 0.01 B C1534
C1540_1 1.2
VRMYAD
C1535 0.01 B
0.47 B 0 79 VB1 READY
VSSYAD
100P CH
1.2 80 VCLAMPP
YIN(CVBS)
1.8
2.4
81 BIASYAD
VDDYAD(2.5V)
C1541
W835 C1543
0.7
1.2
VRBYAD 82 VRTYAD
0 BUFFER 6.3V 100 V-S
C1544 0.01 B
0.8
Q1502
BIASACAD
C1542
2SA1530A
0.01 B C1545
1.7
VRTCAD
0.1 B
0.01 B
1.2
CIN
L1513
2.4
48
VDDCAD(2.5V)
C1552
22uH C1553
1.2
CR IN
6.3V 100 V-S
0.01 B
0
VSSCAD
C1554
C1551 0.1 B
1.2
1
CB IN VDDPLL(2.5V)
0.01 B C1555
0.7
VRBCAD 2 PLL IN
L1514 0.01 B
2.5
VDDDA(2.5V)
99 BIASDA
C1556
33uH R1526
2.0
DAOUT
100 VREFDA
0.1 B
1.5K
0
C1557
VSSDA
C1559 0.01 B 1.1
6.3V 22 V-S
2.0 2.5
C1560
JG1501
0.01 B
1.4 1.5
BUFFER
1 2 3 4 5 6
Q1505
2.5 1.2 1.2 0 3.2 1.6 1.6
2SC3052 C1504
0.01 B R1501
270K
X1501
C1501
42MHz
0.1 B
C1546
C1502
0.01 B
1.8
22 6.3V
V-S
1.2
BUFFER
0
Q1504
2SA1530A
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
C
D E
(SCALER PCB)
B1501
HCB2012K-600T25
0 0 0 1.5 0 0 0 0 0 3.2 0 0 0 0 1.5 1.6 0 0 1.8 1.7 2.5
73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53
49 YOUT4
50 VSSRAM2
51 VDDRAM2(1.5V)
52 VDDRAMD1
VDDIO2(3.3V)
3D-Y/C_SEPA
IC1501
TC90A92AFG
29
TESTM0
30 RESET DVDD3(3.3V)
31 SDA
32 SCL
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
0.2
0 1.5 0 0 0 0 0 0 1.5 0 0 0 1.5 0 0 3.2 0 0 0 0
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
L1507
10uH
L1505
10uH
L1504
47uH
C1517
0.01 B
R1508
R1507
100
R1506
100
R1505
100
180
0 1.5
52 51
0
1.6
4D03WGJ0101T5E
1.5
NR1502
YOUT5
1.6
YOUT6
1.2
YOUT7
0
VSSIO2
1.5
YOUT8
4D03WGJ0101T5E
1.9
NR1501
YOUT9
3.2 C1516 0.01 B
0
TESTM6
0
TESTM5
0
DVSS3
0
CSYNC IN
0
TESTM4
1.5 C1515 0.01 B
0
TESTM3
0
TESTM2
0
TESTM1
R1509
4.6
100 R1528
4.6
100
29 30
0 3.4
R1504
470
F G
H
FROM/TO IN/OUT/REGULATOR
8
P.CON+5V
P.CON+3.3V
L1506
P.CON+1.5V
10uH
7
P.CON+2.5V
FROM/TO SCALER
3D_Y/C_ODD/EVE
3D_Y/C_VD-OUT
3D_Y/C_HD-OUT
3D_Y/C_656-CLK
6
3D_Y/C_656OUT-0
3D_Y/C_656OUT-1
3D_Y/C_656OUT-2
3D_Y/C_656OUT-3
3D_Y/C_656OUT-4
3D_Y/C_656OUT-5
5
3D_Y/C_656OUT-6
3D_Y/C_656OUT-7
4
FROM/TO IN/OUT/REGULATOR
SCL
SDA
3D_Y/C-RESET
3
C_IN
Y/CVBS_IN
2
PCBDS0
CED020
1
H
G-38