Tuner Pack Schematic Diagram - Panasonic DMR-EH50P Service Manual

DMR-EH50 P / DMR-EH50 PC

20.9. Tuner Pack Schematic Diagram

G
TO PP7404
MAIN P.C.B.
(MAIN NET SECTION)
PS7801
GND 13
TUNER 5V 12
11
IIC CLK 10
IIC DATA 9
F
AFC 8
GND 7
6
UNREG 38V 5
TUNER VIDEO1 4
GND 3
1TUNER R 2
1TUNER L 1
E
D
C
B
A
1 2
2 3 4
LB7801
J0JHC0000032
C7819 C7818
0.022 0.022
R7809 R7808 R7806
330 330 330
R7807 180K
C7817 50V2.2
C7820
50V2.2
32 31 30 29 28 27
L OUT R OUT AGC SCL
DET.
AGC
MATRIX & OFFSET
MODE SW CANCEL
OFFSET 75us
CANCEL DE-EMPH
WIDE BAND WIDE BAND
EXPAND RMS DET
SPECTRAL SPECTRAL
EXPAND RMS DET
DBX
DE-EMPH
1 2 3 4 5 6
C7808
35V10
3 4 5
TU7801
ENGF6503GRF
(U/V TUNER)
5 6 7 8 9 10 11 12 13 14 15 16 17 18
C7824 C7823
0.01 6V47
C7826 C7825 D7801
0.01 50V1 MAZ73000BC
R7813
470
R7812
470
Q7801
2SB1218A0L
(BUFFER)
C7811 C7810 C7809
0.22 0.1 0.33
C7815
50V4.7
R7805
330 R7803
3300
26 25 24 23 22 21 20 19 18 17
GND SDA SIF VCC PLL PILOT
INPUT DET.
I2C
DECODER
PILOT
DET
SIF
DEMOD
INPUT OFFSET
PLL
VCA CANCEL
L+R
FILTER
SIF/BB STEREO PILOT
SW FILTER CANCEL
WIDE BAND
IC7801
FILTER
L-R
AN5832SA-E1V
FILTER
(AUDIO MULTIPLEX DECODER)
SAP SAP SAP OUT
FILTER DEMOD FILTER
SPECTRAL
FILTER
SAP DET
NOISE NOISE (L-R)/SAP
FILTER DET SWITCH
7 8 9 10 11 12 13 14 15 16
R7802 C7803 C7801
10K 0.1 50V2.2
6 7 8
60
FL7801
EFCT4R5MS5W
R7810
0
1 3
R7811
2
1K
C7813 C7812
0.01 6V47
R7814
680
C7814
1000P
R7804
10K
DMR-EH50P/PC
Tuner Pack Schematic Diagram
9 10 11