Sony HCD-EC55 - Page 48

4848
HCD-EC55/EC77/GX99
HCD-EC55/EC77/GX99
•Waveforms
– BD90 Board – – PANEL Board –
1 IC101 ia (RFI)
(CD PLAY mode)
0.5 to 1.3 Vp-p
200 mV/DIV, 500 ns/DIV
2 IC101 wf (XO)
(CD PLAY mode)
59.1 ns
3.3 Vp-p
1 V/DIV, 20 ns/DIV
– MAIN Board –
1 IC801 w; (XOUT)
13.3 µ s
1.5 Vp-p
500 mV/DIV, 4
µ s/DIV
1 IC301 qd (X0A)
30.5 µ s
2.1 Vp-p
500 mV/DIV, 10
µ s/DIV
2 IC301 od (X0)
198 ns
2.5 Vp-p
1 V/DIV, 100 ns/DIV
• IC Block Diagrams
IC201 TK63115SCL-G@GT
– BD90 Board –
IC401 BA5826SFP-E2
VIN
1
GND
2
VOUT
3
V REF
ON/OFF
CONTROL
THERMAL &
OVER CURRENT
PROTECTION
VCONT
5
4NC
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
LEVEL
SHIFT
LEVEL
SHIFT
GND
IN4
IN4'
BIAS
VCC
VCC
IN3'
IN3
VOL(+)
VOL(-)
RESET
OPIN
VO1(-)
REGB
VO1(+)
IN1
RESET
REGOUT
MUTE
GND
IN2'
IN2
VO2(+)
VOL(-)
GND
OPOUT
MUTE
VCC
VCC
13.3K
13.3K
13.3K
13.3K
100
10K
10K
10K
T.S.D.
REGULATOR,BIAS
DROP
VO3(-)
VO3(+)
CH3
CH4
CH2
CH1
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
VCC
INL3
INL4
AGND
DGND
REFIN
INL1
INR1
INR2
INR3
INR4
INL2
TREL
TRER
BASSL2
BASSL1
BASSR1
BASSR2
LOUT
ROUT
NC
NC
CLK
DATA
TONE CONTROL
BASS/TREBLE
SURROUND
INPUT
GAIN
CONTROL
IGOUTR
IGOUTL
VOLINR
VOLINL
MUTE
MUTE
INPUT
GAIN
CONTROL
L ch
TONE CONTROL
BASS/TREBLE
R ch
MCU
I/F
0 - +12dB/2dB step
0 - +12dB
/2dB step
VOLUME
VOLUME
0 - -89dB.
0 - -89dB.
REF
INPUT
SELECTOR
INPUT
SELECTOR
SELECTOR
MODE
IC602 R2S15904SP
– MAIN Board –