Sony TRINITRON KV-32HS20 Service Manual page 45

B BOARD SCHEMATIC DIAGRAM (4 OF 4)
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A
—
B
—
C
—
D
—
E
—
F
—
G
—
H
—
I
—
J
—
K
—
L
—
M
—
N
—
O
—
P
—
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| 19 | 20 | 21 | 22 | 23 | B BOARD WAVEFORMS (4 OF 4)
B BOARD: IC2309Q
(LSB) R0
(LSB) G0
(LSB) B0
DVDD
DVSS
KV-32HS20/36HS20/36HS20H/32XBR450/36XBR450/36XBR450H
1 2 3
3.0 Vp-p (V) 3.0 Vp-p (V) 1.6 Vp-p (H)
4
5 6
1.8 Vp-p (H) 1.3 Vp-p (H) 1.5 Vp-p (H)
7 8
1.2 Vp-p (H) 1.4 Vp-p (H).
43 AVSS
1
4LSB'S
R1 2 CURRENT 42 RO
CELLS
R2
3
R3 4
R4 5
LACHES 6LSB'S
R5 6 DECODER CURRENT
CELLS
R6 7
R7 8
R8 9 DECODER
CLOCK
GENERATOR
R9 10
RCK 31
45 AVSS
11
4LSB'S
G1 44 GO
12 CURRENT
CELLS
G2 13
G3 14
G4 15
6LSB'S
LACHES
DECODER
G5 16 CURRENT
CELLS
G6 17
G7 18
DECODER
G8 19
CLOCK
GENERATOR
G9 20
GCK 32
47 AVSS
21
4LSB'S
B1 22 CURRENT 46 BO
CELLS
B2 23
B3 24
41 AVDD
B4 25
6LSB'S
LACHES 40 AVDD
B5 26 DECODER CURRENT
CELLS 39 AVDD
B6 27
28
B7
DECODER
B8 29 CLOCK
GENERATOR
B9 30
VG
38
BCK 33
VREF
- 37
48 BIAS VOLTAGE CURRENT CELLS +
GENERATOR (FOR FULL SCALE) 36 IREF
VB 35
34