Sony HCD-GTX88 Service Manual page 64

HCD-GTX88
• IC BLOCK DIAGRAMS
IC401 BA5826SFP-E2 (BD91 Board)
VO1(-)
1
CH1
VO1(+) 2
IN1 3
13.3K
T.S.D.
REGULATOR,BIAS
DROP
100
RESET 4
5
REGB
REGOUT 6
MUTE 7
GND 8
IN2' 9
IN2
10
VO2(+)
11
CH2
VOL(-) 12
GND 13
OPOUT 14
IC201 TK63115SCL-G@GT (BD91 Board)
VIN 1
GND 2
V REF
ON/OFF
CONTROL
3
VCONT
IC701 BA6956AN (DRIVER Board)
IC712 BA6956AN (DRIVER Board)
1 2 3
HCD-GTX88
28 GND
27 VOL(-)
CH4
LEVEL
26 VOL(+)
SHIFT
LEVEL
SHIFT
25
IN4
24 IN4'
23
BIAS
VCC 22 VCC
VCC 21 VCC
20 IN3'
19 IN3
LEVEL
SHIFT
LEVEL
SHIFT
18
VO3(+)
CH3
17
VO3(-)
16 RESET
15 OPIN
5 VOUT
THERMAL &
OVER CURRENT
PROTECTION
4 NC
TSD
CONTROL LOGIC
4 5 6 7 8 9
IC402 BD4929G-TR (MAIN Board (1/4))
NC
4 5
VREF
1 2 3
VOUT VDD GND
IC101 M61529FP-D60G (MAIN Board (2/4))
42 41 40 39 38 37
INPUT
ATT
VOCAL
CUT
EXTERNAL INPUT
INPUT ATT ATT
REF
1 2 3 4 5 6
64 64
36 35 34 33 32 31 30 29 28
TONE CONTROL
ELECTRICAL
(BASS/MID/TREBLE)
VOLUME
TONE ATT
+
SURROUND
OR
DPL BUFFER +
+
TONE ATT
ELECTRICAL
TONE CONTROL
VOLUME
(BASS/MID/TREBLE)
7 8 9 10 11 12 13 14 15
27 26 25 24 23 22
BASS
BOOST
+
MCU
INTERFACE
BASS
BOOST
16 17 18 19 20 21