Diagrams; Block Diagram - Tuner Section - Sony HCD-EP505 Service Manual

6-1. BLOCK DIAGRAM – TUNER Section –
(EXCEPT AEP, UK, CH)
TC401
TC401
FM TRACKING
BPF401
BPF
L407
AM RF
D407
L408
TC402
AM OSC
L408
L407, TC402
AM FREQUENCY
AM TRACKING
COVERAGE
CN401
(AEP, UK, CH)
FM ANT
U401
75Ω
FM TUNER PACK
COAXIAL
1 RF IN IF OUT 8
OSC OUT 6
VT
5
T401
CN402 AM RF
AM ANT
D405
T402
TC401
AM OSC
T402
L401, TC401
AM FREQUENCY
COVERAGE
AM
TRACKING
FM/AM PLL
U403
14
• R-ch is omitted due
to same as L-ch.
• SIGNAL PATH
: FM
: AM
SECTION 6

DIAGRAMS

FM/AM IF AMP,
AM RF AMP/MIX/OSC,
CF406
FM/AM DET, MPX
U401
22 13
FMRF OUT FM DET
FM
FMRF IN FMIF L OUT
24 5 10
MIX
T401 R OUT
CF401
AM IF
AM
1 AMRF IN
9 11 AMIF
AGC
MIX
CF404
AM
AMOSC
3
8
OSC
BUFFER
FM OSC BUFFER
FMOSC 20
Q401
16 15
FMIN AMIN
AM/FMIF
7 7 IFIN
BUFFER
FM/AM BAND
AM/FM SW 15 7 BO1
SELECT SWITCH
Q403
FM/AM PLL
U402
20 AOUT
19 AIN
L. P. F
18 PD
CF401 CF402 CF403
FM IF AMP
1
Q403
AMMIX
CF404
AMRF AM AM
27 2
RF AMP MIX
T406
OSC
OSC
AM AM IF
29
OSC
30
L. P. F
13 18
1/2
SWALLOW
COUNTER
SHIFT REGISTER & LATCH
TU-L
16
TU-R
17
R-CH
STATION
BUFFER
12
Q404
STEREO
X401
7.2MHz
XIN
1
XOUT
20
DA IN
DI 4
CLOCK
CL
5
PLL CE
CE 3
DA OUT
DO 6
EMP IN
FMDET
FM-IN
FM L. P. F.
FM IF 23 22
DET T404
24
AM DET
AGC
AM-IF
4 AM IF DET
AM/FM
IF BUFFER
9
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
T407
FM/AM DET, MPX
FM DET
U402
X401
7.2MHz
17 16 1 20
REFERENCE
PHASE PHASE
DIVIDER
DETECTOR/ DETECTOR/
CHARGE PUMP CHARGE PUMP
12 BIT
UNLOCK
PROGRAMMABLE
DETECT
DIVIDER
15 15
(AEP, UK)
13
BUFFER
4 MUX
Q405
RDS DECODER
EMP OUT L IN L OUT
21 L. P. F. 19 17
DECODER
EMP OUT
20
R-CH
MUTING
13 14 6 7
FM/AM BAND
SELECT SWITCH
Q404
11 10 6
DI
3
CL
4
CCB
CE
INTERFACE
2
DO
5
UNIVERSAL
COUNTER
HCD-EP505
Ver 1.1
X304
4.332MHz
14
RCLK
RCLK A
16 (Page 18)
RDATA
RDAT 2
IC305
TU-L
B (Page 17)
TU-R
R-CH
(AEP, UK, CH)
FM
ON/OFF
D
(Page 18)
STEREO
STATION
DA IN
CLOCK
PLL CE
DA OUT
E (Page 17)