Sony CFD-S28L Service Manual page 30

• IC Block Diagrams
– TUNER Board –
IC1 TA2104AN
GND1 1
FM RF
2
FM RF IN
AM
AM LOW OUT 3 MIX
FM FM
MIX OUT 4
MIX OSC
AM
OSC
BUFF
VCC2 5 BUFF
LEVEL
DET
AM IF
AM IF IN 6
ST
IF BUFF
FM IF
1/8
FM IF IN 7
SW
GND2 8
AM
DET
IF REQ
AF BUFF
AGC
AGC
9
FM AF
QUAD 10 DET
ST/MO
R OUT 11
FM/AM
MUTE
VCO
L OUT 12
DIVIDE
DECODE
– MAIN Board –
IC301 TA2068N
ALC 1
LINE
NAB
2
OUT1 NAB
AMP1
BUF AMP TAPE
NAB
3
RADIO
A1
NF1
REC
AMP1
REC
4
OUT1
MONITOR
26dB BUF AMP
NAB
MUTE
5
AMP
IN1 B1
VREF 6
ON 7dB
REF
LOGIC
AMP
ON
7dB
GND 7
BUF AMP
2.1
B2
NAB MONITOR
MUTE
REC
8
IN2
AMP
AMP2
REC
9
OUT2
26dB
RADIO
NAB TAPE
10
NF2
NAB
AMP2
NAB
11
OUT2
LINE
MIC BUF AMP
AMP1 A2
MIC
12
NF
IC2 LC72137-D
NC 1
24 FM RF OUT
CE 2
23
VCC1
DI
CCB
22 AM RF IN
I/F
CL 4
DO 5
21 FM OSC
AM OSC
20
REFERENCE
19 OSC OUT
DIVIDER
B01 6
ST IND
18
PHASE
12BITS
DETECTOR
PROGRAMMABLE
B02 7
CHARGE
DIVIDER
PUMP
B03 8
UNLOCK
17 IF OUT
I01 9
DETECTOR
16 POWER ON
DET OUT
I02
10
15 MPX IN
14 LPF2/MO-ST
SWALLOW
COUNTER
1/2
13 LPF1/BAND
1/16,1/17
4BITS
UNIVERSAL
COUNTER
11
IFIN
IC302 BH3854AS
LINE
24 AGND 1
IN1
IN1 2
INT
23
EXT NF1 3
RADIO
22
BVN1 4
IN1
5
BIN1
REC
MATRIX
21
PLAY BVO1 6
SURROUND
TIN1 7
TVO1 8
PRE
20 VR VR
OUT1
OUT1 9
VCC 10
19 VCC
SC 11
PRE
18
PORT1 12
OUT2
PORT2 13
RADIO
17 PORT3 14
LINE
PORT4 15
RADIO
DGND 16
16
IN2
TAPE
15
TAPE
LINE
14
IN2
MIC
13
IN
– 45 –
IC701 CXA1992BR
22 NC 39 38 37
PD 2 PD 1 PD
I-V AMP I-V AMP AMP
21 XOUT
20 XIN
VCC
19 AOUT
18 AIN
IFB1 – IFB6
17 PD
16 VSS
FE
40
BIAS
15 VDD
RESET
14 B04
VEE
F I-V
F 41
AMP
13 FMIN
E I-V
TGFL
E 42
AMP
EI
43
12 AMIN
VEE 44 VEE
TEO 45
LPFI 46
TEI 47
ATSC 48
TZC 49
TM1
32 FILTER
DFCT
31 IN2
30 NF2
TDFCT 50
29 BVN2
28
BIN2
27 BVO2
26 TIN2
VC 51
25 TVO2
24 OUT2
FZC 52
23 VC
FOCUS PHASE
22 TC
COMPENSATION
21 BC
20
CK
19 DATA
FS4
DFCT
18 LATCH
17 VREF
1 2 3
36 35 34 33 32 31 30
LD
AMP
RF SUMMING
FOCUS OK
AMP
COMPARATOR
LASER
POWER
CONTROL
PEAK/BOTTOM MIRR
HOLD
COMPARATOR
PEAK/BOTTOM
HOLD
FOCUS BIAS
FOCUS ERROR
WINDOW
AMP
COMPARATOR
TGH
TRACKING GAIN
WINDOW
TGL
COMPARATOR
BALH IIC DATA REGISTER, INPUT SHIFT REGISTER,
ADDRESS DECODER, SENSE SELECTOR,
BALL
OUTPUT DECODER
ATSC
E-F BALANCE
WINDOW
COMPARATOR
ATSC
WINDOW
COMPARATOR
TZC
COMPARATOR
TRACKING PHASE
COMPENSATION
TG1
VCC
CENTER
VOLTAGE
GENERATOR
FZC
VCC
COMPARATOR
VEE
FS1
CHARGE UP
FS2
TG2
VEE
4 5 6 7 8 9
– 46 –
29 28 27
IIL
↓
TTL
DEFECT
AMP
26 SENS2
IIL
↓
25 SENS1
TTL
24 C. OUT
23 XRST
22 DATA
TTL
↓
21 XLT
IIL
20 CLK
19 LOCK
VCC 18 VCC
VCC
ISET 17 ISET
TM6
16 SL O
15 SL M
14 SL P
TM5
TM2
VEE
VCC
TM7
TM4
FSET
TM3
VEE
10 11 12 13