Denon DRA-29*5, Руководство по обслуживанию

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43
DRA-295
LA1266 (IC402)
10
4
1 3
8
19
15
17
18
14
21
22
GND
Vcc
5
11
IF
BUFFER
IF
BUFFER
2
FM - IF
6
Q.D.
7
REG
23
OSC
OSC
BUFFER
24
NARROW
S-METER
S-METER
16
LED
DRIVER
RF MIX
12
20
AM-IF DET
AGC
POST
AMP
9
13
AM-IF FM-IF FM-IN
AM-IN
20 19 18 17 16 15 14 13 12
9 8
7
5 6 1
21
LA3401 (IC403)
22
VOL
REG
OSC
SYMMETRICAL
REOCTANCE
CIRCUIT
PHASE
COMPARATOR
VCO STOP
PILOT DET
FF FF
FF
38kHz
FF
38kHz 90°
FF
19kHz 90°
MUTING
FM AM CHANGE
Ro
Rc
Rc
Rb
2 3 4
DECODER
MUTING CONTROL
FM AM CHANGE OVER
Vcc ON
MUTING
MUTING
OUTPUT
STEREO
SWITCH
TRIGGER
LAMP
DRIVER
Rb
10 11
LC72131M (IC401)
1 20
2 19
3 18
4 17
5
16
6 15
7 14
8 13
9 12
10 11
XIN
CE
DI
CL
DO
BO1
BO2
BO3
BO4
IO1
AOUT
AIN
PD
V
DD
FMIN
AMIN
IO2
IFIN
Vss
XOUT
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
A OUTPUT
A –INPUT
A+INPUT
V
B OUTPUT
V
B –INPUT
B +INPUT
1
2
3
4 5
7
8
6
S2
S3
S4
S5
S6
S7
S8
S9
S10
S1
V
DD
STB
DATA
S2
S3
S4
S5
S6
S7
S8
S9
S10
GND
CK
Vss
S1
13
14
1
3
4
5
6
7
8
9
10
11
12
2
15
16
28
27
26
25
24
23
22
21
20
19
18
17
1
13
28
2~12
12~27
14
15
16
Vss
GND
V
DD
S1~S10
CK
DATA
STB
GND=0V
Vss=-8.0~-17V
GND=0V
VIDEO OUT
VIN1
A
1 2 3 4 5 6 7
6dB
amp
8
Vcc
9
video switch
(4 inout 1 output)
control
driver
B
GND
VIN2 VIN3 VIN4
TC9273N-007 (IC300)
NJM2068DD (IC301,602) LA7952 (IC500)
(U.S.A./Canada model)
Border Input
Pin No Symbol Name Function
Dual Power Use:VDD = 8.0~17 V Single Power Use:VDD = 8.0~18V
+Power Terminal
Digital Ground
+Power Terminal
I/O Terminal
Clock Input
Low level
Terminal
Clock input for data transfer.
Serial input for switch setting.
Strobe InputStrobe input for data writing. Strobe Input
Data Input
Input terminal of analog switch.
TC9273N Terminal Function