Pioneer dvr-3100-s, Руководство по обслуживанию

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DVR-3100-S
100
1 2 3 4
1 2 3 4
C
D
F
A
B
E
• Electric Volume IC
11
10
L4
LSELO
9
LIN
8
LTRE
7
LBASS1
8
LBASS2
5
4
LOUT
TEST
2 CE
3 VSS
1 DI
30 CL
28 Vref
27 NC
29 VDD
12
L3
13 L2
14
L1
15
NC
20
R4
19
R3
18 R2
17
R1
16
NC
21
RSELO
22
RIN
23
RTRE
24
RBASS1
25
RBASS2
26
ROUT
Control
Circuit
Logic
Circuit
CCB
Interface
LVref
RVref
Control
Circuit
No. Pin Name Function No. Pin Name Function
1 DI Serial data input for control 16 NC Not connected
2 CE
Chip enable pin
Data are written in the internal latch by a timing
of "H"
→
"L", and each analog switch works.
Data transfer is enabled by "H" level.
17 R1
Input signal pin
3 VSS Ground pin 18 R2
4 TEST
Pin for electronic volume test
Set to VSS electric potential.
19 R3
5 LOUT Volume and equalizer output pin 20 R4
6 LBASS2
Capacitor and resistor connection pins for bus
bandpass filter
21 RSELO Input selector output pin
7 LBASS1 22 RIN Volume and equalizer input pin
8 LTRE
Capacitor connection pin for treble bandpass
filter
23 RTRE
Capacitor connection pin for treble bandpass
filter
9 LIN Volume and equalizer input pin 24 RBASS1
Capacitor and resistor connection pins for bus
bandpass filter
10 LSELO Input selector output pin 25 RBASS2
11 L4
Input signal pins
26 ROUT Volume and equalizer output pin
12 L3 27 NC Not connected
13 L2 28 Vref
0.5XVDD voltage generation block
14 L1 29 VDD Power supply pin
15 NC Not connected 30 CL Clock input pin for control
LC75342M (TUJB ASSY : IC2801)
Pin Function
Block Diagram
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