Sony HCD-EC79i - Page 40

HCD-EC69i/EC79i/EC99i
HCD-EC69i/EC79i/EC99i
4040
• IC Block Diagrams
– CD Board –
IC201 TK63115SCL-G@GT
THERMAL &
OVER CURRENT
PROTECTION
VOLTAGE
REFERENCE
ON/OFF
CONTROL
VIN
1
GND 2
VCONT
3NC4
VOUT
5
+
–
IC401 BA5826SFP-E2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
LEVEL
SHIFT
MUTE
LEVEL
SHIFT
D.BUFF
D.BUFF
D.BUFF
GND
IN4
IN4'
BIAS
VCC
VCC
IN3'
IN3
VO3(+)
VO3(–)
VO4(–)
VO4(+)
RESETt
OPIN
VO1(–)
REGB
VO1(+)
IN1
RESET
REGOUT
MUTE
GND
IN2'
IN2
VO2(+)
VO2(–)
GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGULATOR
VCC
VCC
– MAIN Board –
IC602 BD3499FV-E2
1A1
18 BCB1
17 BCA1
16 BCA2
20 SB2
19 OUT2
22 SB1
21 SR
24 VCC
23 OUT1
26
SDA
25
SCL
28 FIL
27 GND
15 BCB2
2A2
3B1
5C1
6C2
4
B2
11
VOL1
12
VOL2
13TC2
14TC1
7D1
8D2
9SEL2
10SEL1
INPUT
SELECTOR
TREBLE/
BASS
INVERTER
VOLUME
INPUT
GAIN
SURROUND
PC BUS
LOGIC
IC701 NJM2368V (TE2)
IN-
1
REF
8
CT
7
CS
6
V+
5
F. B
2
GND
3
OUT
4
UNDERVOLTAGE
LOCKOUT
L. O
30 μA
VOLTAGE
REFERENCE
+
−
ERROR
AMP
+
−
S. C. P
PWM
+
−
OSC
+
−
+
+

IC101 JB (RFi)
(CD play mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p

IC101 XG (XO)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.1 ns
3.3 Vp-p
XB
IC301 RG (X1A)
1 V/DIV, 10 μs/DIV
30.6 μs
3.1 Vp-p
RB
IC801 X (XOUT)
500 mV/DIV, 5 μs/DIV
13.4 μs
1.2 Vp-p
XT
IC301 PT (X1)
1 V/DIV, 100 ns/DIV
168 ns
3.6 Vp-p
• Waveforms
– CD Board – – MAIN Board – – PANEL Board –
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
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