Denon AVR-786 Service Manual page 19

TC90A69F (IC612)
TC90A69F (IC609)
28 27 26 25 24 23
PLL DET
DAC DAC
(8fsc)
CORING Ped.
LPF
PEAKING CLIP
INTERPOLATION
ADC
1 2 3 4 5 6
LC75721E (IC301)
48
49
DI
CL
CE
RES
V
DD
OSCI
OSCO
Vss
TEST
V
FL
G1
G2
G3
G4
G5
G6
64
1
TA1270BF (IC901)
TA1270BF (IC606)
38 37 36 35 34 33
Y OFFSET DAC I 2 C BUS
DAC2
SW TEST CONTROL
DAC1 39
DAC1 SUB-
Y INPUT 40
CONTRAST Y DL
PEDESTAL
DAC Vcc (5V) 41 CLAMP
SW
fsc
Y DL
C Vcc (5V) 42
TRAP
UV/CbCr SW 43
SYSTEM
CW
MATRIX
fsc OUTPUT 44
fsc
1H DL
1HDL CONT 45
CONTROL
P / N ID
SECAM
SECAM CONT 46
LPF / fsc
CONTROL
TRAP
SW
B-Y/Cb OUTPUT 47
CbCr / UV BPF
TOF
SW
R-Y/Cr OUTPUT 48 APC
VCXO
ACC
SUB-COLOR
1 2 3 4 5 6
22 21 20 19 18 17 16
VCO 1/2
IIC BUS
8fsc 4fsc
1/8
CORING V-ENHANCER
DELAY
LINE LINE
MEMORY MEMORY
KILLER
CNR
DYNAMIC COMB FILTER
C-N.C
Sync. Clamp
7 8 9 10 11 12 13
LC75721E Terminal Function
Symbol
33
V Power terminal +5V
DD
Vss Power terminal GND
32
AM 17
V Power terminal FL drive
FL
AM 18
AM 19 Serial data transfer terminal
DI
AM 20
DI: Data
AM 21
CL
AM 22
CL: Clock
AM 23 CE
CE: Chip enable
AM 24
AM 25
AM 26 OSCI
External CR connecting terminal
AM 27
OSCO
AM 28
AM 29
System reset terminal
RES
AM 30
AM 31
AM1~AM35
AM 32
Anode output terminal
17 AA1~AA3
AA4/G16
16
AA5/G15
AA6/G14
Anode/Grid output terminal
AA7/G13
AA8/G12
G1~G11 Grid output terminal
TEST LSI test terminal
32 31 30 29 28 27 26 25
PEDESTAL PEDESTAL
Ys
CLAMP CLAMP
24
HI: 20h/LOW: 24h
23
OFFSET
SW
22
21
SW
YUV RGB
SW
MATRIX 20
TINT
19
DEMO
18
CP / HP
17
CHROMA NOSE
IN
BLK DET
16
V SEP H. AFC H C / D V C / D
SCP 15
32fH
SYNC
VCO
SEP
7 8 9 10 11 12 13 14
NJM2274R (IC607)
NJM2274R (IC614)
1
2
3
15
4
Power Save CTL
Yin 1 Clamp
Disc.
Cin 8 Bias
14
Function
CLOCK
MM74LCX244
(IC809-811)
TOP VIEW
SW GND 1 20
OE
ADRS SW
2 19
I0
R-Y/R
3 18
OUTPUT
O4
B-Y/B
OUTPUT 17
4
Y/G I1
OUTPUT
5 16
SW O5
Vcc (9V)
6 15
SYNC
I2
Vcc (9V)
7 14
CP/HP
O6
INPUT
8 13
I3
Dig GND
9 12
SCP
O7
OUTPUT
10 11
GND
19
AVR-1906 / AVR-786 / AVC-1620
8
TOP 7
VIEW
6
5
Vcc
7 2
Vref
+
+
7 2
C Mute CTL GND
BU2090F (IC302,604,608)
VSS 1 18
CONTROL CIRCUIT
DATA 2 17
12-bit SHIFT REGISTER
3 16
LCK
4 15
12-bit STRAGE REGISTER
Q0
5 14
O U T P U T B U FFE R (O P E N D R A IN )
Q1 6 13
Q2 7 12
8
Q3 11
9
Q4 10
74LVX157
(IC816)
SE LECT 1
VCC
SEL
1A 2
OE2
3
1B
O0
1Y 4
I4
5 5
O1 2A
I5
2B 6
O2
7
2Y
I6
GND 8
O3
I7
3 Vout
750
ohm
4 Vsag
VDD
OE
Q11
Q10
Q9
Q8
Q7
Q6
Q5
16
Vcc
15
ST
14
4A
13
4B
12
4Y
11 3A
10
3B
9 3Y