Read Sony CMT-EP707 / HCD-EP707 Service Manual online
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30
HCD-EP707
• IC Block Diagrams
– MAIN Board –
IC201
LC72131D
IC204
BU4094BC
IC202
LA1823
IC205, 206
TA7291S (J)
IC207
PT2314
IC208
BA3308
PHASE
DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS
PROGRAMMABLE
DRIVER
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
POWER
ON
RESET
1/2
CCB
INTERFACE
1
2 3 4 5
6 7 8 9
16
15
14
13
12
11
10
17
18
19
20
XOUT
VSS
AOUT
AIN
PD
VDD
FMIN
AMIN
XIN
DO
CL
DI
CE
IFIN
IO1
BO4
BO3
BO2
BO1
IO2
UNLOCK
DETECTOR
DATA SHIFT REGISTER LATCH
1
16
8 – STAGE
SHIFT REGISTER
15
OUTPUT
ENABLE
ENABLE
14 Q5
13 Q6
12 Q7
11 Q8
10 Q'S
9 QS
VDD
STROBE
2
SERIAL IN
3
CLOCK
8 – BIT
LATCHES
3 – STATE
OUTPUTS
4
Q1
5
Q2
6
Q3
7
8
Q4
VSS
24
23
FM
RF
1
AM
RF
GND2
2
VCC2
REG
3
AM
MIX
AM
OSC
OSC
BUFFER
4
22
21
VCC1
20
FM
OSC
PHASE
COMP
FM
MIX
DECODER
5
6
19
GND1
7
MUTE
8
18
17
16
9
15
PILOT
DET
14
FM
DET
13
10
FM
S-METER
11
12
ST
ST SW
FF
VCO
FF
FF
TRIG
AM
IF
AM
DET
AGC
FM
IF
SD
IF
BUFFER
FMRF IN
RF GND
FMRF OUT
VCC2
FM OSC
DET OUT
MUTE
R
L
AM/FM
MO/ST
FM DET
AMRF IN
REG
AM OSC
VCC1
FM MIX
GND
FM BUFFER
AM OSC BUFFER
AM MIX
QUAD
AMIF
SD
REGULATOR
PROTECT
CIRCUIT
5
7
4
8
9
1
2
6
3
GND
OUT1
NC
VREF
IN1
IN2
VCC
VS
OUT2
DRIVER
CIRCUIT
DRIVER
CIRCUIT
4
TREB_L
3
TREB_R
18
LOUT
MUTE
SPEAKER
ATT
11
R4
10
R3
9
R2
8
R1
6
ROUT
12
LOUD_L
7
LOUD_R
5
RIN
15
L2
16
L1
INPUT
SELECTOR
&
GAIN
CONTROL
SERIAL BUS
DECODER
&
LATCHES
14
L3
13
L4
20
BOUT_L
19
BIN_L
17
LIN
22
BOUT_R
23
OUT_R
MUTE
SPEAKER
ATT
24
OUT_L
21
BIN_R
26
DATA
25
DGND
28
REF
27
CLK
BASS
TREBLE
VOLUME &
LOUDNESS
LOUDNESS
1
VDD
2
AGND
3
4
5
6
7
8
GND
ALC
VCC
OUTPUT1
1
2
INPUT1
NF1
INPUT2
9
NF2
OUTPUT2
ALC
+
–
+
–
MUTE
IC209
BA335
AF AMP
COMPARATOR
1
2
3
4
5
6
7
8
9
V. N
C. R.
NF
NC
GND
T
ROUT
DIOUT
V8
VCC
IC203
BU1924F-E2 (AEP, UK models)
ANALOG
DIGIT
AL
RCLK
NC
XO
XI
VSS2
T2
VDD2
T1
QUAL
RDA
T
VREF
MUX
VDD1
VSS1
VSS3
CMP
1
4
3
6
5
8
7
2
14
15
16
13
12 11 10
9
CLOCK
PLL 57kHz
RDS/ARI
COMPARATOR
8th SWITCHED
CAPACITOR
FILTER
ANTI-ALIASING
FILTER
BIPHASE
DECODER
PLL
1187.5Hz
DEFFERENTIAL
DECODER
TEST
Ver 1.6
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