Sony ICF-CD553RM Service Manual ▷ View online
29
ICF-CD553RM
– TUNER Board –
IC1
TA2149BN
IC702
BA5826FP-E2
1
2
3
4
5
6
7
8
9
10
11
12
13
13
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT-DOWN
MONITOR
LEVEL
SHIFT
LEVEL
SHIFT
D.BUFF
D.BUFF
D.BUFF
GND
SLIN
(SLIN)
VREF
VCC
VCC
(FIN)
FIN
F–
F+
SL–
SL+
NC
OPIN
SP–
REG–B
SP+
SPIN
RST
REGO
MUTE
GND
TIN
(TIN)
T–
T+
GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGULATOR
DRIVER
MUTE
VCC
VCC
RF GND
3
2
1
IF REQ
AM
MIX
FM RFIN
AM LOW CUT
5
4
MIX OUT
VCC
AM IF IN
8
7
6
FM IF IN
GND
10
9
AGC
QUAD
12
11
R-OUT
L-OUT
FM RFOUT
22
23
24
20
21
17
18
19
15
16
13
14
AM RFIN
RF VCC
FM OSC
ST LED
OSC OUT
AM OSC
IF REQ
LPF1
MPX IN
DET OUT
LPF2
FM
MIX
FM
OSC
LEVEL
DET
AM
DET
MUTE
FM
DET
ST/MO
FM/AM
AM
OSC
AGC
SW
ST
1/8
BUFF
BUFF
DIVIDE
DECODE
VCO
IF BUFF
AF BUFF
AF
FM RF
AM IF
FM IF
1/1 OR
1/16
30
ICF-CD553RM
IC2
LC72137M-TLM
11
10
9
8
7
6
5
4
3
2
1
12
13
14
15
16
19
20
UNLOCK
DETECTOR
POWER ON
RESET
UNIVERSAL
COUNTER
CCB
I/F
CE
DI
CL
DO
XOUT
AOUT
XIN
AIN
PD
VSS
VDD
B04
FMIN
AMIN
B01
B02
B03
I01
I02
IFIN
PHASE
DETECTOR
CHARGE
PUMP
REFERENCE
DIVIDER
SWALLOW
COUNTER
1/16,1/17
4BITS
12BITS
PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER
LATCH
1/2
17
18
– MAIN Board –
IC302
BD3870FS-E2
31
ICF-CD553RM
IC303
MS87V1021-02TA
CS
15
MVDD
16
SI
14
SO
13
SK
12
BUSY
11
TEST
10
TEST
9
TEST
8
TEST
7
TEST
6
TEST
5
TEST
4
TEST
3
TEST
2
MGND
1
MCU
INTERFACE
TIMING
CONTROLLER
ADPCM
ANALIZER/
SYNTHESIZER
XT
AOUT
27
LOUT
29
SG
31
AGND
32
LIN
30
XT
19
18
DVDD
17
RESET
20
AIN
26
AMON
28
TEST
21
TEST
22
TEST
23
DGND
24
AVDD
25
LOW-PASS
FILTER
D/A
CONVERTER
LOW-PASS
FILTER
A/D
CONVERTER
SIGNAL
GROND
GROND
VOLUME
CONTROLLER
DARM
2M-bit
2M-bit
MASKROM
512K-bit
IC304
BA6208
1
2
3
4
5
6
7
8
9
NC
OUTPUT 2
Vcc
GND
NC
INPUT 2
INPUT 1
NC
MOTOR
DRIVE
MOTOR
DRIVE
REG
SWITCH
SWITCH
OUTPUT1
– AMP Board –
IC301
BA5417
STANDBY
T.S.D.
BS
FILTER
PRE GND2
PRE GND1
NF2
IN2
IN1
NF1
FIL
TER
STBY
POWER GND
BS1
OUT1
VCC
OUT2
10
3 4 5
6
BS
BS2
2
NC
1
8
9
7
11 12
13
14 15
+
–
–
+
–
–
32
ICF-CD553RM
MAIN BOARD IC401
µ
PD789478GC-A28-8BT (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
NC
—
Not used
3 to 5
VLC2 to VLC0
—
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
6 to 9
COM0 to COM3
O
Common drive signal output to the liquid crystal display
10 to 31
SEG0 to SEG21
O
Segment drive signal output to the liquid crystal display
32
MEMO BUSY
I
Busy signal input from the voice messenger
33
MEMO RESET
O
Reset signal output to the voice messenger “L”: reset
34
MEMO CS
O
Chip select signal output to the voice messenger “L” active
35
MEMO SK
O
Serial data transfer clock signal output to the voice messenger
36
MEMO SO
I
Serial data input from the voice messenger
37
MEMO SI
O
Serial data output to the voice messenger
38
AVDD
—
Power supply terminal (+3.3V) (for A/D converter)
39
C-FSEQ
I
Synchronizing signal detection signal input from the digital signal processor
40, 41
ENCODE+,
ENCODE–
I
Jog dial pulse input from the rotary encoder
42
CD CLOSE DET
I
CD tray close detect switch input terminal “L”: CD tray is closed
43 to 46
KEY3 to KEY0
I
Front and side panel key input terminal (A/D input)
47
AVSS
—
Ground terminal (for A/D converter)
48
RC IN
I
SIRCS signal input from the remote control receiver
49
AC IN
I
Power failure detection signal input terminal
50
WRQ
I
Interruption detection signal input from the digital signal processor “L” active
51
CD CLOSE
O
CD tray open/close motor drive signal (close direction) output terminal “H” active
52
BUZZER
I
Beep sound drive signal output terminal
53
CD DATA IN
I
Serial data input from the digital signal processor
54
CD DATA
O
Serial data output to the digital signal processor
55
CD CLK
O
Serial data transfer clock signal output to the digital signal processor
56
CD CE
O
Chip enable signal output to the digital signal processor
57
DRF
I
Focus on/off detection signal input from the digital signal processor
58
XRST
O
Reset signal output to the digital signal processor “L”: reset
59
POWER ON
O
Power amplifier on/off control signal output terminal “L”: power amplifier on, “H”: standby
60
CD OPEN
O
CD tray open/close motor drive signal (open direction) output terminal “H” active
61
CD OPEN DET
I
CD tray open detect switch input terminal “L”: CD tray is closed
62
MUTE
O
Muting on/off control signal output terminal Not used
63
COUNT
I
PLL serial count data input from the FM/AM PLL
64
RADIO CE
O
PLL chip enable signal output to the FM/AM PLL
65
RADIO DATA
O
PLL serial data output to the FM/AM PLL
66
RADIO CLK
O
PLL serial data transfer clock signal output to the FM/AM PLL
67
VOL CLK
O
Serial data transfer clock signal output to the electrical volume
68
VOL DAT
O
Serial data output to the electrical volume
69
IC0
—
Not used
70
XT1
I
Sub system clock input terminal (32.768 kHz)
71
XT2
O
Sub system clock output terminal (32.768 kHz)
72
VDD
—
Power supply terminal (+3.3V)
73
VSS
—
Ground terminal
74
X1
I
Main system clock input terminal (4.19 MHz)
75
X2
O
Main system clock output terminal (4.19 MHz)
•
IC Pin Function Description
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