Sony HCD-EC68P Service Manual page 42

HCD-EC68P/EC78P
• IC Block Diagrams
– CD Board –
IC201 TK63115SCL-G@GT
VIN 1
THERMAL &
OVER CURRENT
PROTECTION
–
VOLTAGE
GND 2
REFERENCE +
5 VOUT
ON/OFF
VCONT 3 4 NC
CONTROL
– MAIN Board –
IC602 BD3499FV-E2
A1 1
A2 2
B1 3
B2 4 INPUT INPUT
SELECTOR GAIN
C1 5
C2 6
D1 7
PC BUS
D2 8
LOGIC
SEL2 9
INVERTER
SEL1 10
VOL1 11
VOLUME
VOL2 12
SURROUND
TC2 13
TC1 14
TREBLE/
BASS
HCD-EC68P/EC78P
IC401 BA5826SFP-E2
1
VO1(–)
D.BUFF
2
VO1(+)
LEVEL
D.BUFF
SHIFT
IN1 3
LEVEL
SHIFT
RESET 4
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
REGB 5
REGOUT 6
MUTE
MUTE 7
GND 8
9
IN2'
IN2 10
LEVEL
LEVEL
SHIFT
D.BUFF SHIFT
VO2(+) 11
D.BUFF
VO2(–) 12
GND 13
OPOUT 14
IC701 BD9701CP-V5
REGULATOR STANDBY
28 FIL
27 GND
VOLTAGE
REFERENCE
26 SDA
25 SCL
1 2 3 4 5
24 VCC
23 OUT1
22 SB1
21 SR
20 SB2
19 OUT2
18 BCB1
17 BCA1
16 BCA2
15 BCB2
IC801 LV23003VA
AM RF-IN 1
28 GND
REG 2
FM
27
VO4(–)
FM-MIX 3
MIX
D.BUFF
GND1 4
VO4(+)
26
5
AM-MIX
D.BUFF
VCC1 6
25 IN4
24
IN4'
AMIF-IN 7 AM AM
IF DET
FMIF-IN 8
FM FM
IF DET
23 BIAS
VCC 22 VCC
IF
BUFFER
VCC 21 VCC
P-DET 9
20 IN3'
19 IN3
D.BUFF
P-COMP 10
18 VO3(+) FM-DET 11
L-OUT 12
D.BUFF
DECODER
13
VO3(–) R-OUT
17
VSS 14
16 RESETt
15 OPIN
UNIVERSAL
COUNTER
CE 15
16
DI CCB
I/F
CL 17
DO 18
– PANEL Board –
IC303 BA6956AN
TSD
1 2 3 4 5
42 42
AM
FM
36 FM RF-IN
RF
RF
35 GND2
34 FMRF-OUT
33 VCC2
FM
32 FM-OSC
OSC
AM
AM
MIX
31 AM-OSC
OSC
30 BO2
29 BO1
OSC
BUFFER LOW-PASS
28 LP-OUT
FILTER
27 LP-IN
26 PD
AGC 25 AGC
24 AMDET-OUT
23 FMDET-OUT
FM
S-METER
SD
ST
PIROT
TRIG
DET
STSW
FF
FF FF
PHASE VCO
COMPARATOR
MUTE 22 MPX-IN
POWER ON
21 VDD
RESET
PROGRAMMABLE
DIVIDER
DATA SHIFT
REGISTER
LATCH
SWALLOW
COUNTER
PHASE
DETECTOR
UNLOCK
CHARGE
DETECTOR
PUMP
20 XOUT
REFERENCE
19 XIN
DIVIDER
CONTROL LOGIC
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