Sony HCD-GT22 Service Manual page 58

HCD-GT22/GT44/GT55
• 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
– DRIVER Board –
IC701, 712 BA6956AN
TSD
CONTROL LOGIC
1 2 3 4 5 6 7 8 9
HCD-GT22/GT44/GT55
IC401 BA5826SFP-E2
28
1 GND
VO1(–)
D.BUFF
27 VO4(–)
2
VO1(+)
D.BUFF
LEVEL
D.BUFF
SHIFT 26 VO4(+)
D.BUFF
IN1 3
LEVEL
SHIFT
25 IN4
RESET 4
24
IN4'
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
23 BIAS
5
REGB
VCC 22 VCC
REGOUT 6
VCC 21 VCC
MUTE
MUTE 7
20 IN3'
GND 8
IN2' 9
19 IN3
IN2 10
LEVEL
LEVEL
SHIFT
D.BUFF
SHIFT
D.BUFF
VO3(+)
18
VO2(+) 11
D.BUFF
D.BUFF
17 VO3(–)
VO2(–)
12
GND 13
16 RESETt
OPOUT
14
15 OPIN
– USB Board –
IC915 R5523N001B-TR-F
5 OUT
GATE CURRENT
EN 1
CONTROL LIMIT
4 IN
UVLO
FLAG
GND 2
DELAY
THERMAL
SHUTDOWN
FLG 3
– MAIN Board –
IC102 R2S15208SP
REFIN 1 REF AMP 10 REFOUT
LIN 2 9 LOUT
3BAND
PARAMETRIC
EQUALIZER
RIN 3 8 ROUT
7 GND
VCC 4
MCU
DATA 5 6 CLOCK
INTERFACE
IC103 R2S15207FP
30 29 28 27
RECOUT
VOCALCUT
ON/OFF
INA1 31
INPUT
SELECTOR
GND 32
+
REFIN 33
REF
SURROUND
SUR1 34
VOCAL CUT
SUR2 35
MONO/STEREO
MIX1 36
MIX2 37
+
VCC 38
INPUT
SELECTOR
INA2 39
INB2 40
RECOUT VOCALCUT
ON/OFF
1 2 3 4
58 58
26 25 24 23 22 21
TONE CONTROL
(BASS, TREBLE, MID)
TONE
ON/OFF
20 VOLIN1
VOLUME
19 BB11
18 BB21
TONE ATT
BASSBOOST
ON/OFF
17 OUT1
+
16 DATA
MCU
INTERFACE 15 CLOCK
14 OUT2
BASSBOOST
ON/OFF
TONE ATT
13 BB22
12 BB12
VOLUME
11 VOLIN2
TONE
ON/OFF
TONE CONTROL
(BASS, TREBLE, MID)
5 6 7 8 9 10