HCD-EP505
15
15
AM
RF AMP
AM
OSC
AM
MIX
L. P. F
FM/AM PLL
U403
FM/AM PLL
U402
AM/FM
IF BUFFER
DECODER
• SIGNAL PATH
: FM
: AM
X401
7.2MHz
AMIN
IFIN
IF OUT
FM/AM
IO1
AOUT
AIN
FMIN
20
1
14
13
18
SWALLOW
COUNTER
UNIVERSAL
COUNTER
CCB
INTERFACE
REFERENCE
DIVIDER
UNLOCK
DETECT
12 BIT
PROGRAMMABLE
DIVIDER
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
DI
CL
CE
DO
DA IN
STATION
STEREO
FM
ON/OFF
TU-L
R-CH
R-CH
EMP OUT
L IN
L OUT
EMP OUT
RCLK
RDATA
RCLK
RDAT
MUX
TU-R
CLOCK
PLL CE
DA OUT
PD
XIN
XOUT
3
4
2
5
11
BO1
6
10
17
16
• R-ch is omitted due
to same as L-ch.
CN402
CN401
U401
FM TUNER PACK
CF401
T401
AM RF
T402
AM OSC
D405
VT
CF402
CF403
1
5
8
AMRF
AM-IF
FM-IN
FMDET
EMP IN
AM DET
AMMIX
OSC
RF IN
OSC
IF OUT
OSC OUT
OSC OUT
6
1
23
2
30
4
27
29
24
5
10
22
16
FMRF IN
FMIF
FMRF OUT
13
FM DET
1
AMRF IN
3
AM
OSC
8
AMOSC
BUFFER
20
FMOSC
15
AM/FM SW
7
AM/FMIF
BUFFER
FM
MIX
L OUT
R OUT
17
3
CE
DO
6
4
DI
20
XOUT
1
XIN
CL
5
CF401
9
11
AMIF
7
BO1
7
IFIN
20
AOUT
19
AIN
18
PD
FMIN
AM
MIX
CF404
CF406
TC401
DET
AM IF
AGC
CF404
FM
DET
FM IF
24
22
20
21
19
17
MUTING
13
14
TULED
6
STLED
7
BUFFER
Q405
4
16
2
X304
4.332MHz
RDS DECODER
IC305
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, MPX
U402
14
13
XI
XO
E
(Page 17)
A
(Page 18)
D
(Page 18)
B
(Page 17)
FM ANT
75
Ω
COAXIAL
AM ANT
AM FREQUENCY
COVERAGE
T402
AM
TRACKING
L401, TC401
AM IF
T406
FMDET
9
T407
FM DET
L. P. F.
T404
L. P. F.
FM/AM BAND
SELECT SWITCH
Q404
BPF
BPF401
FM IF AMP
Q403
L407
AM RF
L408
AM OSC
D407
TC402
AM FREQUENCY
COVERAGE
L408
AM TRACKING
L407, TC402
FM TRACKING
TC401
TC401
PHASE
DETECTOR/
CHARGE PUMP
(AEP, UK)
(EXCEPT AEP, UK, CH)
(AEP, UK, CH)
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, MPX
U401
AM IF
T401
TU-L
R-CH
TU-R
DA IN
CLOCK
PLL CE
DA OUT
AGC
12
16
AMIN
15
BUFFER
Q404
STATION
STEREO
FM/AM BAND
SELECT SWITCH
Q403
FM OSC BUFFER
Q401
L. P. F
X401
7.2MHz
(AEP, UK, CH)
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – TUNER Section –
Ver 1.1
Summary of Contents for HCD-EP505
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