Tunb And Jckb Assy Block Diagram - Pioneer DVR-520H-S Service Manual

1

3.1.2 TUNB and JCKB ASSY BLOCK DIAGRAM

+32V +5V
A
Reg. Ripple Filter
U301
V/U Tuner Module
VXF 1023-
11
IF
Trap
SCL AGC
AGC
SDA
TUNB ASSY
A
(VWV2003)
G
B
SDEB ASSY
(VWV2033)
JA502
IN1
AV2
C
S
12
2
JA1301
C
8
6
Y
10
4
JA1302 V
6
8
2
12
L
4
10
IN2
(Front)
R
D
JA651
Optical
OUT
JA501
R/C Out
B Out
G Out
AV1
V/Y Out
V/Y In
L In
E
R In
L Out
R Out
Muting
(Discrete)
JA700
Y
C
Comp
OUT
L
F
R
16
1
2
+6V TUON
AGC
SW.
SCL
AGC
AFC
SDA
17
12
SIF
IC302
1,2
PIF
TDA9818TS
SAW
16
Trap
VIF/SIF
23,24
SIF
UV OUT
IC
SAW
AGC
SCL
SDA
Q401,Q405-Q406
R
L
15kHz LPF
SCL
IC401
26
SDA
2
Stereo
27
Decoder
MSP3417G
V/Y In
G In
B In
R/C In
16
4L
15
4R
L In
IC501
R In
LA73026AV
26
V Out (1/2)
L Out
30
5
R Out
31
SCART
Interface
39
40
SDET2 <u-com>
25
18
U/V Out
23
IC501
36 13
LA73026AV
37
(2/2)
7
42
43
SCART
1,10
Interface
2,11
LAMUTE
RAMUTE
<MAIN>
LAMUTE
RAMUTE
Muting
<MAIN>
(Discrete)
2
3
CN300 CN401
AGC
1 19
SCL
2 18
3 17 SDA
AFT
AFT
4 16
5 15 TUON<u-com>
11 9
U/V OUT
17 3
SIF
15 1
4R
12 4
10 6 4L
7 9 SDA
6 10 SCL
IC803 14 Y
TA1287FG
Cb
15
RGB
Cr
13
Interface
Clamp Pulse
IC805
Sync-Sepa
IC801
SCVY
SCL
SCR
Output Circuit
60
R/C
56
B
58
G
IC701
LA73033M
IC502
Video Selector
TC7W53FU
&
Video SW
Video Driver
(2/2)
IC503
MM1511XN
Y/C Mix
63
Y
C 65
68
V
C
Y
L
R
DVR-520H-S
3
4
B
JCKB ASSY (VWV2024)
Video Input Circuit
19
27 V/Y
U/V
IC701
25
C/CB
LA73033M
Video Selector
23
CR
&
Video Driver
(1/2)
Q702
Pulse Shape
36 SYNC
YVSEL
SCL
SWSTBY
SDA
<u-com>
Audio Input Circuit
4L/4R <from SDEB ASSY>
IC702
Audio Selector
with
Electric A.T.T
LC75342M
EVOLCLK
<u-com>
EVOLDATA
EVOLCE
IC806
AV2_R/C In
MM1501XN
Video SW
IC808
AV2_B In
MM1501XN
Video SW
IC807
AV2_G In
MM1501XN
Video SW
R
45 R
53
B
B
G
51 G
41 C
43 Y
4
SYNCAFT
<u-com>
SYNC
<u-com>
5 L
26
R
LPF
LPF
LPF