Sony HCD-GT22 Service Manual page 58

HCD-GT22/GT44/GT55
Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– CD Board –
IC201 TK63115SCL-G@GL
VIN 1
THERMAL &
OVER CURRENT
PROTECTION
–
VOLTAGE
GND 2
REFERENCE +
5 VOUT
ON/OFF
VCONT 3 4 NC
CONTROL
T E
L 1 3 9 4 2 2 9 6 5 1 3
– DRIVER Board –
IC701, 712 BA6956AN
TSD
CONTROL LOGIC
1 2 3 4 5 6 7 8 9
w w w
HCD-GT22/GT44/GT55
IC401 BA5826SFP-E2
1
VO1(–)
D.BUFF
2
VO1(+)
D.BUFF
LEVEL
D.BUFF
SHIFT
D.BUFF
IN1 3
LEVEL
SHIFT
RESET 4
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
5
REGB
VCC
REGOUT 6
VCC
MUTE
MUTE 7
GND 8
IN2' 9
IN2 10
LEVEL
LEVEL
SHIFT
D.BUFF
SHIFT
D.BUFF
VO2(+) 11
D.BUFF
D.BUFF
VO2(–)
12
GND 13
OPOUT
14
– USB Board –
IC915 R5523N001B-TR-F
GATE CURRENT
EN 1
CONTROL LIMIT
UVLO
FLAG
GND 2
DELAY
THERMAL
SHUTDOWN
FLG 3
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– MAIN Board –
IC102 R2S15208SP
28
GND
REFIN 1 REF AMP 10 REFOUT
27 VO4(–)
LIN 2 9 LOUT
3BAND
26 VO4(+)
PARAMETRIC
EQUALIZER
RIN 3 8 ROUT
7 GND
25 IN4
VCC 4
MCU
DATA 5 6 CLOCK
INTERFACE
24
IN4'
23 BIAS
IC103 R2S15207FP
22 VCC
21 VCC
20 IN3'
30 29 28 27
19 IN3
RECOUT
VOCALCUT
Q Q
3 7 6
INA1 31
VO3(+)
18
INPUT
SELECTOR
17 VO3(–)
16 RESETt
GND 32
15 OPIN
REFIN 33
REF
SUR1 34
SUR2 35
MONO/STEREO
MIX1 36
MIX2 37
VCC 38
INPUT
5 OUT
SELECTOR
INA2 39
INB2 40
RECOUT VOCALCUT
4 IN
ON/OFF
1 2 3 4
u 1 6 3
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2 4
8 9 9
26 25 24 23 22 21
TONE CONTROL
(BASS, TREBLE, MID)
TONE
ON/OFF
ON/OFF
3 1 5 1 5 0 8 9 2
+
TONE ATT
SURROUND
+
MCU
VOCAL CUT
INTERFACE
TONE ATT
+
TONE
ON/OFF
TONE CONTROL
(BASS, TREBLE, MID)
5 6 7 8 9 10
m
c o
2
8 9 9
4 9 8 2 9 9
20 VOLIN1
VOLUME
19 BB11
18 BB21
BASSBOOST
ON/OFF
17 OUT1
16 DATA
15 CLOCK
14 OUT2
BASSBOOST
ON/OFF
13 BB22
12 BB12
VOLUME
11 VOLIN2