JVC RX-DV31SL Service Manual page 38
Home theater dvd-audio/video receiver
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Also See for RX-DV31SL:
- Instructions manual (149 pages) ,
- Instructions manual (80 pages) ,
- Instructions manual (78 pages)
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6.15 LA73054-X (IC401) : Video driver
• Pin layout & Block diagram
36
35
LPF
2Step
Amp1
C_OFFSET
DC_CTL
CLAMP
1
2
• Pin function
Pin No.
Symbol
1
VCC1
2
COMPOSITE.IN
3
SQUEEZE.SW
4
LETTER-BOX.SW
5
MUTE-SW-1
6
C-IN
7
GND11
8
Y-IN-1
9
YC-MIX.SW
10
SIGNAL-IN.SW
11
Y-IN-2
12
MUTE-SW-2
13
LPF.SW
14
CB.IN
15
AMP.SW-2
16
CR.IN
17
GND12
18
REG
19
DRIVE.SW-2
20
GND26
21
CR.OUT
22
GND25
23
CB.OUT
24
VCC22
25
Y-OUT-2
26
GND24
27
GND23
28
Y-OUT-1
29
GND22
30
C-DC.OUT
31
C-OUT
32
GND21
33
COMPOSITE-OUT
34
VCC21
35
DRIVE.SW-1
36
AMP.SW-1
1-38 (No.22023)
34
33
32
31
30
75
75
DRIVER
DRIVER
75
DRIVER
LPF1
Y/C
MIX
LPF1
2Step
Amp3
2Step
Amp2
CLAMP
3
4
5
6
7
I/O
-
VCC except for 75ohm driver
I
Input composite
I
Selecting squeeze mode
I
Selecting letter-box mode
I
Composite/S signal mute selection
I
Input Chroma signal
-
Composite/S GND except for 75ohm driver
I
Input Y signal
I
Selecting of doing Y/C-MIX or not
I
Selection of a kind of signal
I
Input component Y or baseband signal
I
Component signal mute selection
I
Selection of a kind of component LPF
I
Input component or baseband signal
I
Selecting amplifier gain for component signal
I
Input component or baseband signal
-
Component GND except for 75ohm driver
O
Capacitor terminal for regulator
I
2drive/1drive select for component signal
-
CR-GND for 75ohm driver
O
75ohm driver output of pin16 input
-
CB-OUT for 75ohm driver
O
75ohm driver output of pin14 input
-
Component Vcc for 75ohm driver
O
75ohm driver output of pin11 input
-
Component Y out for 75ohm driver
-
Y out for 75ohm driver
O
75ohm driver output of pin8 input
-
Chroma out for 75ohm driver
O
DC voltage output for S1,S2
O
75ohm driver output of pin6 input
-
Composite out for 75ohm driver
O
75ohm driver output of pin2 input
-
Composite/S Vcc for 75ohm driver
I
2drive/1drive select for composite/S signal
I
Selecting amplifier gain for composite/S signal
29
28
27
26
25
75
DRIVER
LPF2
LPF1
2Step
Amp4
SYNC
SEP
PEDESTAL
CLAMP
CLAMP
8
9
10
11
12
Function
24
23
22
21
20
75
75
DRIVER
DRIVER
LPF2
LPF1
LPF2
LPF1
2Step
2Step
Amp5
Amp6
PEDESTAL
PEDESTAL
VCC
CLAMP
CLAMP
REG
13
14
15
16
17
19
18
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