Denon DRA-700AE Service Manual page 14

SN74HCT08 (IC 206) AUDIO P.W.B
1A V
1
14
CC
1B 4B
2
13
1Y 3 4A
12
2A 4Y
4
11
2B 5 3B
10
6
2Y 3A
9
7
GND 8 3Y
24LC16B (IC 404) FRONT P.W.B. for 500AE,model
1
A0
2
A1
3
A2
4
V
SS
CXA1511M (IC 201) AUDIO P.W.B. for 700AE, 700AEDAB model
8 5
1 4
NJM2068 (IC 104, 108-113, 120) INPUT P.W.B. for 500AE model
(IC 104-113, 120) INPUT P.W.B. for 700AE, 700AEDAB model
BLOCK DIAGRAM
8
V
CC
7
WP
6
SCL
5
SDA
Block Diagram and Pin Configuration
IN 1
ABLC
Photo
Diode
WP
I/O MEMORY
CONTROL CONTROL
LOGIC LOGIC
SDA SCL
V
CC
V
SS
Head Limiter BPF Delector &
Amp Amp BEF Comparator Integralor
2
C1
470, 680
0.01µ 0.01µ
14
DRA-700AE/700AEDAB/500AE
HV GENERATOR
EEPROM
ARRAY
XDEC
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
Hysteresis
Comparator
3 4 5 6 7 8
C2 GND fo N.C. OUT V
200k
(fo = 40kHz)
CC
V = 5V
CC