Denon AVR-1685, Руководство по обслуживанию

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19
AVR-1705/685
LC75721E (IC
301
)
TA1270BF (IC
606
)
64
49
48 33
32
17
16 1
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM 10 AM 11 AM 12 AM 13 AM 14 AM 15 AM 16
AM 17
AM 18
AM 19
AM 20
AM 21
AM 22
AM 23
AM 24
AM 25
AM 26
AM 27
AM 28
AM 29
AM 30
AM 31
AM 32
G7 G8 G9 G10 G11 AA8
/G1
2
AA7
/G1
3
AA6
/G1
4
AA5
/G1
5
AA4
/G1
6
AA3 AA2 AA1 AM3
5
AM3
4
AM3
3
DI
CL
CE
RES
V
DD
OSCI
OSCO
Vss
TEST
V
FL
G1
G2
G3
G4
G5
G6
Symbol
V
DD
Vss
Power te5V
Power terminal GND
V
FL
Power terminal FL drive
DI
CL
CE
Serial data transfer terminal
DI: Data
CL: Clock
CE: Chip enable
OSCI
OSCO
External CR connecting terminal
RES
System reset terminal
AM1~AM35
AA1~AA3
Anode output terminal
AA4/G16
AA5/G15
AA6/G14
AA7/G13
AA8/G12
Anode/Grid output terminal
G1~G11 Grid output terminal
TEST LSI test terminal
Function
LC75721E Terminal Function
NJM2274R (IC
614
) TC90A69F (IC
6
09)
1
2
3
4 5
7
8
6
TOP
VIEW
1 Yin
Cin
7
C Mute CTL
2
GND
Disc.
Vref
7
Power Save CTL
2
Vcc
Clamp
8 Bias
+
+
Vsag 4
3 Vout
750
ohm
39
40
41
42
43
44
45
46
47
48
1
DAC1
Y INPUT
DAC Vcc (5V)
C Vcc (5V)
UV/CbCr SW
fsc OUTPUT
1HDL CONT
SECAM CONT
B-Y/Cb OUTPUT
R-Y/Cr OUTPUT
4.43MHz
X’tal
2
M-
X’tal
3
3.58MHz
X’tal
4
APC
5
C GND
6
CHROMA
OUTPUT
7
V-
SEP
8
SYNC.
INPUT
9
SYNC.
OUTPUT
10
AFC
FIL
TER
11
SYNC.
GND
12
32fh VCO
13
VD
OUTPUT
14
HD
OUTPUT
38
DAC2
37
Y OUTPUT
36
GND
35
DAC TEST
34
SDA
33
SCL
32
Ys (TH=0.7V HI; 1IN/L
O
W
; 2IN)
31
R-
Y1
INPUT
30
B-
Y
1
INPUT
29
Y1 INPUT
28
I 2
C
GND
27
R-
Y2
INPUT
26
B-
Y
2
INPUT
25
Y2 INPUT
24
23
22
21
20
19
18
17
16
15
SW GND
ADRS SW
R-Y/R
OUTPUT
B-Y/B
OUTPUT
Y/G
OUTPUT
SW
Vcc (9V)
SYNC
Vcc (9V)
CP/HP
INPUT
Dig GND
SCP
OUTPUT
DAC2
DAC1
fsc
Y DL
Y DL
SW
SW
PEDESTAL
CLAMP
1H DL
CONTROL
SECAM
CONTROL
CbCr / UV
SW
fsc
TRAP
OFFSET
SW
LPF / fsc
TRAP
BPF H. AFC H C / D
32fH
VCO
V C / D
ACC
TOF
SCP
SW
APC
P / N ID
SYSTEM
CW
MATRIX
TINT
DEMO
CHROMA
BLK
NOSE
DET
YUV RGB
MATRIX
CP / HP
IN
SW
V SEP
SYNC
SEP
SUB-COLOR
VCXO
SUB-
CONTRAST
Y OFFSET
SW
DAC
TEST
Ys
I 2 C BUS
CONTROL
PEDESTAL
CLAMP
PEDESTAL
CLAMP
HI: 20h/LOW: 24h
1
BIAS
VB1
2
VRT
27
COUT
3
VDD1
26
VS
S1
4
TESTI1
25
Y
OUT
5
VS
S2
24
VB2
6
VRB
23
PD
7
Y
CIN
22
FIL
8
TEST
21
VS
S4
9
KILLER
20
VDD4
10
TESTI2
19
FSC
11
VDD3
18
TESTOUT
12
VS
S3
17
MODE1
13
VDD2
16
SDA
14
TESTI3
15
SCL
CORING
PEAKING
DAC
1/8
(8fsc)
8fsc 4fsc
DAC
IIC BUS
28
PLL DET 1/2 VCO
Ped.
CLIP
LPF DELAY
CNR
C-N.C
CORING V-ENHANCER
KILLER
DYNAMIC COMB FILTER
Sync. Clamp
ADC
LINE
MEMORY
LINE
MEMORY
INTERPOLATION
MM74LCX244
(IC809-811)
BU2090F (IC302,607,615)
74LVX157
(IC816)
1
2
3
4
5
6
7
8
18
17
16
15
14
13
12
11 Q3
VDD
OE
Q7
Q8
Q11
Q10
Q9
Q6
VSS
DATA
CLOCK
LCK
Q0
Q1
Q2
9 10 Q4
Q5
CONTROL CIRCUIT
12-bit SHIFT REGISTER
12-bit STRAGE REGISTER
OUTPUT BUFFER (OPEN DRAIN)
1
2
3
4
5
6
7
8
20
19
18
16
15
14
13
I3
VCC
OE2
O2
I5
O0
I4
O1
I6
OE
I0
O4
I1
O5
I2
O6
9 12
O7 O3
10 11
GND I7
TOP VIEW
17
1A
1B
1Y
2A
2B
2Y
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Vcc
ST
4A
4B
4Y
3A
3B
3Y
SELECT
5
SEL
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