Sony HCD-GTX66 Service Manual page 62

HCD-GTX66/GTX77
Q Q
3 7 6 3 1 5 1 5 0
• IC BLOCK DIAGRAMS
IC401 BA5826SFP-E2 (BD91 Board)
VO1(-) 1
CH1
VO1(+) 2
LEVEL
SHIFT
3
IN1
13.3K
T.S.D.
REGULATOR,BIAS
DROP
100
RESET 4
REGB 5
REGOUT 6
MUTE 7
8
GND
IN2' 9
LEVEL
IN2
10
SHIFT
VO2(+) 11
CH2
VOL(-) 12
T E
L GND 13 1 3 9 4 2 2 9 6 5 1 3
OPOUT 14
IC201 TK63115SCL-G@GT (BD91 Board)
VIN 1
GND 2
V REF
ON/OFF
CONTROL
VCONT 3
IC701 BA6956AN (DRIVER Board)
IC712 BA6956AN (DRIVER Board)
w w w
1 2 3
HCD-GTX66/GTX77
28 GND
27 VOL(-)
CH4
26 VOL(+)
LEVEL
SHIFT
25 IN4
24 IN4'
23 BIAS
VCC 22 VCC
VCC 21 VCC
20
IN3'
19 IN3
LEVEL
SHIFT
18 VO3(+)
CH3
17 VO3(-)
16 RESET
15 OPIN
5
VOUT
THERMAL &
OVER CURRENT
PROTECTION
4 NC
TSD
x a o
y
CONTROL LOGIC
. i
4 5 6 7 8 9
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8
IC402 BD4929G-TR (MAIN Board (1/4))
NC
4 5
VREF
1 2 3
VOUT VDD GND
IC101 M61529FP-D60G (MAIN Board (2/4))
Q Q
3 7 6 3
42 41 40 39 38 37 36
INPUT
ATT
+
VOCAL
CUT
+
EXTERNAL INPUT
INPUT ATT ATT
REF
1 2 3 4 5 6
u 1 6 3
.
62 62
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2 4
9 9
1 5 1 5 0 8 9 2 4
35 34 33 32 31 30 29 28 27
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 16
m
c o
2
8 9 9
9 8 2 9 9
26 25 24 23 22
BASS
BOOST
MCU
INTERFACE
BASS
BOOST
17 18 19 20 21