Sony HCD-GT444 Service Manual page 54
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Also See for HCD-GT444:
- Service manual (93 pages) ,
- Service manual (118 pages) ,
- Service manual (102 pages)
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HCD-GT111/GT222/GT444/GT555
Q Q
3 7 6 3 1 5 1 5 0
• Waveforms
– CD Board –
– USB Board –
IC101
(FEi)
ICIC901
(CD play mode)
Approx.
400 mVp-p
200 mV/DIV, 500 ns/DIV
IC101
(TEi)
(CD play mode)
Approx.
500 mVp-p
200 mV/DIV, 500 ns/DIV
– TC Board –
IC101
(XO)
L501
(CD play mode)
(TAPE REC mode)
3.2 Vp-p
59 ns
T E
L
1 3 9 4 2 2 9 6 5 1 3
1 V/DIV, 20 ns/DIV
IC101
(RFi)
(CD play mode)
1.2 Vp-p
500 mV/DIV, 500 ns/DIV
w w w
HCD-GT111/GT222/GT444/GT555
– MAIN Board –
(X2)
IC401
(XC-OUT)
3.7 Vp-p
30.5 μs
111 ns
1 V/DIV, 20 μs/DIV
1 V/DIV, 50 ns/DIV
IC401
(X-OUT)
200 ns
1 V/DIV, 100 ns/DIV
56 Vp-p
13.6 μs
10 V/DIV, 5 μs/DIV
x
a o
y
.
i
http://www.xiaoyu163.com
8
• IC Block Diagrams
– CD Board –
IC201 TK63115SCL-G@GT
VIN 1
THERMAL &
OVER CURRENT
PROTECTION
2.5 Vp-p
–
VOLTAGE
GND 2
REFERENCE
+
ON/OFF
VCONT 3
CONTROL
3.5 Vp-p
IC501 AK5358AET-E2
Q
Q
3
7
6
3
DECIMATION
AINR
1
MODULATOR
FILTER
DECIMATION
MODULATOR
AINL
2
FILTER
CKS1
3
VOLTAGE
VCOM
4
REFERENCE
AGND
5
VA
6
VD
7
DGND
8
IC502 TC74VHC157FT (EKJ)
SELECT 11 1
16
V
CC
S
1A 2
1A
G
15
STROBE
INPUT
1B
3
1B
4A
14
4A
INPUT
4B
OUTPUT
1Y
4
1Y
4B
13
5
11 12
4Y
OUTPUT
2A
2A
4Y
INPUT
6
11
3A
u 1 6 3
2B
2B
3A
INPUT
OUTPUT
2Y
7
2Y
3B
10
3B
3Y
.
GND 8
9
3Y
OUTPUT
54
54
2
4
9
9
IC401 BA5826SFP-E2
1
VO1(–)
D.BUFF
2
VO1(+)
LEVEL
D.BUFF
SHIFT
3
IN1
5
VOUT
RESET
4
4
NC
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
REGB
5
REGOUT
6
MUTE
7
MUTE
GND
8
9
IN2'
IN2
10
LEVEL
1
5
1
5
0
8
9
2
D.BUFF
SHIFT
VO2(+)
11
16
CKSO
D.BUFF
VO2(–)
12
GND
13
15
CKS2
OPOUT
14
DIF
14
SERIAL I/O
13
PDN
INTERFACE
12
SCLK
CLOCK
11
MCLK
DIVIDER
10
LRCK
9
SDTO
– USB Board –
IC915 R5523N001B-TR-F
EN
1
m
UVLO
c o
GND
2
THERMAL
SHUTDOWN
FLG
3
2
8
9
9
28
GND
27
VO4(–)
D.BUFF
26
VO4(+)
D.BUFF
LEVEL
SHIFT
25
IN4
24
IN4'
23
BIAS
VCC
22
VCC
21
VCC
VCC
20
IN3'
19
IN3
LEVEL
4
9
8
SHIFT
2
9
9
D.BUFF
18
VO3(+)
D.BUFF
17
VO3(–)
RESETt
16
15
OPIN
5 OUT
GATE
CURRENT
CONTROL
LIMIT
4 IN
FLAG
DELAY
- Quick Links:
- Poweramp Board
- Test Mode
- Electrical Parts List
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