Sony HCD-MX500i Service Manual page 42

HCD-MX500i/MX550i
• IC Block Diagrams
– BD96/BD96U Board –
IC102 MM3404A15URE
CE 1 BIAS
VOLTAGE
–
REFERENCE
+
CURRENT
LIMIT
GND 2
IC403, 404 TC74HC4066AFT (EL)
1I/O 1 14 VCC
13 1C
1O/I 2 12 4C
2O/I 3 11 4I/O
2I/O 4 10 4O/I
2C 5 9 3O/I
3C 6
GND 7 8 3I/O
IC405 TC74VHC157FT (EKJ)
SELECT 11 1 16 V
CC
S
1A 2 1A G 15 STROBE
INPUT
1B 3 1B 4A 14 4A
INPUT
1Y 4 1Y 4B 13 4B
OUTPUT
2A 5 2A 4Y 11 12 4Y OUTPUT
INPUT
2B 6 2B 3A 11 3A
INPUT
OUTPUT 2Y 7 2Y 3B 10 3B
3Y
GND 8 9 3Y OUTPUT
HCD-MX500i/MX550i
IC301 BA5826HFP-E2
4 VDD
1
VO1(–)
D.BUFF
2
VO1(+)
D.BUFF LEVEL
SHIFT
IN1 3
LEVEL
SHIFT
RESET 4
3 VOUT
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
REGB 5
REGOUT 6
MUTE
MUTE 7
GND 8
IN2' 9
IN2 10
LEVEL
LEVEL
SHIFT
D.BUFF SHIFT
VO2(+) 11
D.BUFF
VO2(–) 12
GND 13
OPOUT 14
IC406 BD2220G-TR
VIN 1 REGULATOR 5 VOUT
GND 2
EN (/EN) 3 4 /OC
– DAB Board –
IC671 TK11133CSCL-G
28 GND
5
27 VO4(–)
D.BUFF
OVER HEAT &
26 VO4(+)
OVER CURRENT
D.BUFF
PROTECTION
CONTROL
CIRCUIT –
25 IN4
+
BANDGAP
24 IN4'
REFERENCE
1 2
23 BIAS
VCC 22 VCC
VCC 21 VCC
20
IN3'
– MAIN Board –
19 IN3
IC405, 508, 509, 704 TK11133CSCL-G
IC504 TK11150CSCL-G
D.BUFF
18 VO3(+)
D.BUFF
5
VO3(–)
17
16 RESETt
OVER HEAT &
15 OPIN
OVER CURRENT
PROTECTION
CONTROL
CIRCUIT –
+
BANDGAP
REFERENCE
1 2
42 42
IC672 SI-3010KM-TLS
VC 1
4
VIN 2
GND 3
REF
VOUT 4
ADJ 5
3
IC502 BD3491FS-SE2
B1 1
B2 2
4
C1 3
C2 4
D1 5 INPUT
SELECTOR
D2 6
E1 7
E2 8
F1 9
F2 10
SEL2 11
BUFFER
SEL1 12
VOL1 13
VOLUME
VOL2 14
3
TC2 15
TC1 16
TSD
–
+
32 SDA
31 SCL
30 FIL
INPUT
29 GND
GAIN
I2C BUS 28 SDA
LOGIC
27 SCL
26 VCC
25 OUT1
SURROUND
TREBLE/
BASS
24 SB1
23 SR
22 SB2
21 OUT2
20 BCB1
19 BCA1
18 BCA2
17 BCB2