Block Diagram - Main Section - Sony ICF-CD543RM Service Manual

ICF-CD543RM
5-2. BLOCK DIAGRAM – MAIN Section –
(US)
CT3, L4
VT
TV (7 – 13CH)/
WEATHER (1 – 7CH)
TRACKING
TVRO
20
L4
CT3
TV RF
D4
FM/TV ANT IN
TVIN
TV
24
(from AC line)
RF AMP
FMIN
FM
BPF 25
RF AMP
BPF1
FMRO
22
CT2, L3
FM/TV (2 – 6CH) L3 CT2
TRACKING FM RF
D3
ARFI
AM
L1
26
RF AMP
AM
FERRITE-ROD
D2
ANTENNA CT1
(1/2)
CT1, L1
AM TRACKING
AM OSC
AM VCO
VOLTAGE
LOW-PASS
FILTER
Q51, 52
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: CD PLAY
X51
75kHz
: FM
: TV (US model only)
: AM
63 62 64
74 75
X401
4.19MHz
TV/FM/AM RF AMP,
MIX, OSC, DET, MPX
IC1
150kHz
DETO
FM/TV FM FM
+ +
PSN
LPF LMT DET
45kHz
AM AGC
BPF AMP
AM/FM: 1/2
TV: 1/8
TV/FM
AM
REGULATOR
OSC
OSC
16 18 19 29
D5
D2 (2/2)
RV1
AM IF
L2
L5
FM/TV OSC
(US)
FM/TV VCO
VOLTAGE
OSC BUFFER BAND SELECT
Q1
FM/AM PLL
IC51
11 12
PD
15
PHASE DETECTOR
CHARGE PUMP
PSN
12BITS
PROGRAMMABLE
19 XIN
DIVIDER
SWALLOW
20
XOUT COUNTER
1/16, 1/17, 4BITS
DI
2
CLK CCB DATA SHIFT REGISTER
3
I/F LATCH
CE
1
SEG0 – SEG15 COM0 – COM3
10 – 25 6 – 9
70 71 48
SIRCS BUFFER
X402
Q401
32.768kHz
LIQUID CRYSTAL DISPLAY
REMOTE CONTROL
LCD401
RECEIVER
IC403
BUFFER
Q102
LOUT
BUFFER
MPXI
MPX 3
35 36 Q101
DECODER
R-CH
BASS BOOST
CONTROL
Q111, 112
VCO
S691
MEGA BASS
12 1
OFF LOW HIGH
RV2
FM STEREO
Q2
5 6
RESET
SYSTEM CONTROLLER
IC401 (2/2)
CD ON
RADIO ON 78
AC IN
KEY0 – KEY2
42 – 44
39 40 80
ROTARY
ENCODER
S403 D404
TIMER
PUSH START/STOP
S401 – 417
18 18
ELECTRICAL
POWER AMP
VOLUME
IC371
IC331
AMP
+
8 VIN2 VOUT2 7 12 L IN L OUT 3
IC301
MUTING
4 5
Q151
8
R-CH
R-CH R-CH
R-CH
STANDBY
SWITCH
Q351
Q371, 372
D371
5V
LEVEL SHIFT
Q671
58 59 79 52 60
U-COM 3.3V U-COM 3.9V
D971
RESET SIGNAL
76 GENERATOR
D401 – 403
IC402
LCD BACK
LIGHT
B+ SWITCH
CD 3.3V
Q302
5V
77
B+ SWITCH
TU 3.3V
Q301
+3.3V +5V
3.3V REGULATOR REGULATOR
Q953 Q951
+6V
D301
MOTOR 6V
REGULATOR
Q952
49
FM/TV ANT IN
CD-L
A
(Page 17)
SP101
(L-CH)
SP201
R-CH
(R-CH)
+
AMP B+
RECT
D911 – 914
RECT
D915, 916
T901
POWER
TRANSFORMER
RECT
D917 – 919
VT (AC IN)