Sony XR-3100R, Service Manual

Page: 18 / 44

18 18
XR-3100R/C33R
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – TUNER Section –
1
4
2 FM-ANT
AM-ANT
6
VCO
20
IF-COUNT/SEEK
19
SD
5
11 19 20 15
5 6 4
25
13
26
VT
13
AM-XTAL-IN
CK
3
CE
DOUT
XTOUT, XTIN
DIN
PLLSI
PLLCE
53
VSM
SD-IN
20
ST-MONO
5
TUNMUTE
AM-CPOUT
18
FM-CPOUT
VT
FM-VCO
16
AM-VCO
IF IN
10
SEEK
2
OSC OUT
PLLSO
27 28
PLLCKO
50
NOISE DET
32
NOISE ON
4
18
S-METER
17
15
12
LCH-OUT
RCH-OUT
AM-DET
22
FM-DET
FILTER
X1
10.25MHz
FM/AM PLL
IC1
05
MUTING
Q151
BUFFER
Q51
MUTING
CONTROL SWITCH
Q61
MUTING
Q121
BAND-PASS
FILTER
IC90
R-CH
D61
R-CH
FM/AM TUNER UNIT
TU1
SYSTEM CONTROLLER
IC501 (1/3)
LO/DX
11
SEEK
21
ST
LO/DX
J1
(FM/AM ANTENNA)
8
+8V-FM
FM B+
10
+8V-AM
AM B+
D1
9
+8V-TU
1 52
MTP
75
DAVN
RDS DECODER
IC51
INTERFACE
REGISTER
IIC BUS
SLAVE
TRANSCEIVER
OSCILLATOR
& CLOCK
X51
4.332MHz
4 8 5
OSCI OSCO
10 9
SDA SCL DAVN
57 kHz
BAND-PASS
FILTER
CLOCKED
COMPARATOR
RDS/RDBS
DEMODULATOR
& DECODER
SIGNAL
QUALITY
DECODER
16 18 19
MPX
CIN
4
5
SC
OUT
MULTI
PATH
DETECTOR
20 2
LVIN MPTH
Q90
NOISE DET
DISCHARGE
SWITCH
FM RDS
S-METER
RV1
DATA
CLOCK
DATA, CLOCK
(Page 19)
C
FM-L
(Page 19) A
AM
(Page 19) B
1, 24
SEEKOUT
• SIGNAL PATH
: FM
: AM (MW/LW)