Sony HCD-EC69i Service Manual page 40

HCD-EC69i/EC79i/EC99i
• Waveforms
– CD Board – – MAIN Board –
IC101 (RFi) IC801
(CD play mode)
0.5 to 1.3 Vp-p
200 mV/DIV, 500 ns/DIV
IC101 (XO)
(CD play mode)
3.3 Vp-p
59.1 ns
1 V/DIV, 20 ns/DIV
• 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
HCD-EC69i/EC79i/EC99i
– PANEL Board –
(XOUT) IC301 (X1A)
1.2 Vp-p
13.4 μs
30.6 μs
500 mV/DIV, 5 μs/DIV 1 V/DIV, 10 μs/DIV
IC301 (X1)
168 ns
1 V/DIV, 100 ns/DIV
IC401 BA5826SFP-E2
VO1(–) 1
D.BUFF
2
VO1(+)
D.BUFF LEVEL
SHIFT
3
IN1
LEVEL
SHIFT
RESET 4
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
REGB 5
6
REGOUT
MUTE 7 MUTE
GND 8
IN2' 9
IN2 10
LEVEL
LEVEL
SHIFT
SHIFT
D.BUFF
VO2(+) 11
D.BUFF
VO2(–)
12
GND 13
OPOUT 14
3.1 Vp-p
3.6 Vp-p
28 GND
27 VO4(–)
D.BUFF
26 VO4(+)
D.BUFF
25 IN4
24 IN4'
23 BIAS
VCC 22 VCC
VCC 21 VCC
20
IN3'
19 IN3
D.BUFF
18 VO3(+)
D.BUFF
17 VO3(–)
16 RESETt
15 OPIN
40 40
– MAIN Board –
IC602 BD3499FV-E2
A1 1
A2 2
B1 3
B2 4 INPUT
INPUT
GAIN
SELECTOR
C1 5
C2 6
D1 7
PC BUS
D2 8
LOGIC
SEL2 9
INVERTER
SEL1 10
11
VOL1
VOLUME
VOL2 12
SURROUND
TC2 13
TC1 14
TREBLE/
BASS
IC701 NJM2368V (TE2)
8 7 6
VOLTAGE
REFERENCE
30 μA
L. O
OSC
+
−
UNDERVOLTAGE
LOCKOUT
S. C. P
+
−
PWM
ERROR +
−
AMP
+
+
−
+
1 2 3
28 FIL
27 GND
26 SDA
25 SCL
24 VCC
23 OUT1
22 SB1
21 SR
20 SB2
19 OUT2
18 BCB1
17 BCA1
16 BCA2
15 BCB2
5
4