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PMC-MD55
TB1
B.P.F
FL1
2
FM
MIX
FM
OSC
24
FM RF-IN
FM RF OUT
L1
FM RF
CT1
D7
21
FM OSC
L2
FM OSC
D8
AM RF-IN
22
AM
MIX
D9
L3
AM (MW) ANT
CT2
L4
AM
OSC
AM OSC
20
AM
OSC
19
OSC-OUT
FM/AM FRONT-END
IC1 (1/2)
FM
TRACKING
CT1, L1
FM VT
VOLTAGE
L2
AM
TRACKING
CT2, L4
12
11
FM-IN
AM-IN
1/2
SWALLOW
COUNTER
1/16, 1/17
4BIT
12BITS
PROGRAMMABLE
DIVIDER
16
PHASE DETECTOR
CHARGE PUMP
REFERENCE
DIVIDER
17
PD
LP-IN
18
DATA SHIFT
REGISTER
LATCH
19
20
9
6
5
X IN
X OUT
X1
75kHz
8
13
10
7
ST-IND
MO/ST
IF-IN
BAND
CCB/IF
1
2
3
4
CE
RD
CK
CD
PLL, LOW-PASS FILTER
IC2
T1
AM IF
CF1
FM
IF AMP
Q14
MUTING
Q7
CF2
7
FM
IF-IN
AM
IF-IN
CF4
6
IF
BUFFER
17
14
13
18
ST-IND
IF-OUT
MO-ST
BAND
AM
DET
FM
DET
AM/FM
BUFFER
16
DET-OUT
15
HIGH
FREQUENCY CUT
Q1
MPX-IN
DIVIDE
DECODE
VCO
MUTE
12
11
R-CH
L-OUT
R-OUT
10
CF3
10.7MHz
QUAD
MONO/ST
SWITCH
Q2 (1/2)
BAND
SWITCH
Q2 (2/2)
MUTING
Q3
R-CH
MUTING
Q5
CN1
(1/3)
A
RA-LCH
IF, DET, FM MPX
IC1 (2/2)
75
Ω
FM
EXT ANTENNA
AM
ANTENNA
TU BOARD
COUNT
CLK
DATA
CE
VT
4
MIX-OUT
05
LP-OUT
12
TO FUNCTION
SELECT SECTION
(Page 40)
6
7
5
3
2
1
• SIGNAL PATH
: FM
: AM
R-CH : Same as L-CH.
• Abbreviation
CND : Canadian
5
1
8
ANT
VT
IF OUT
OSC OUT
TU1
FM TUNER UNIT
7
CT3
MUTING
CONTROL
SWITCH
Q12
CT5
CT4
RF AMP
Q15
(US, CND)
(AEP, UK)
FM-L
MW-L
LW-L
B+ SWITCH
Q13
+B
(FM TUNER UNIT)
+B
(+8V)
(AEP, UK)
LW MUTING
Q8
L5
LW ANT
MW MUTING
Q9
MW MUTING
Q10
CT3, L5
LW TRACKING
CT2, L3
LW TRACKING
CT5
LW VT VOLTAGE
CT4, L4
MW VT VOLTAGE
(AEP, UK)
(US, CND)
(AEP, UK)
(US, CND)
RDS
BUFFER
Q11
CN1
(2/3)
8
CN408
(1/2)
1
4
14
13
X403
4.332MHz
XO
XI
MUX
2
16
RDATA
RCLK
RDS
DECODER
IC406
CN1
(3/3)
6
7
5
3
2
1
63
64
65
66
67
7
9
R-MUTE
R-COUNT
R-CLK
R-DATA
R-CE
RDS-DATA
RDS-CLK
SYSTEM CONTROLLER
IC405(1/5)
G
FROM
POWER SUPPLY
SECTION
(Page 43)
VT
MUTING
CONTROL
Q6
MAIN BOARD (1/6)
FM EXT
ANTENNA
(AEP, UK)
(US, CND)
(US, CND)
MW/LW
ANTENNA
(AEP, UK)
CN402
– 31 –
– 32 –
– 33 –
6-1.
BLOCK DIAGRAM – TUNER Section –
SECTION 6
DIAGRAMS
Содержание PMC-MD55 - Md Boombox
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