Sony HCD-C990 Service Manual - Page 83
IC301, CXD9702L, IC814, TC7WH157FK TE85R
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IC814 TC7WH157FK (TE85R) A1 B2 Y3 GND 4 EN G A Y B Y 8 VCC 171 ST 161 SELECT 5Y HCD-C770/C990 - AMP Board - IC301, 304, 306, 307, 309, 311 CXD9702L VBBA 1 VBOOTA 2 VDRVA 3 VDDA 4 GNDA 5 INA 6 ENA 7 DIAGA 8 VBBA VDRVA UNDER VOLTAGE LOCK-OUT THERMAL SHUT DOWN CROSS OVER DELAY LOW SIDE LEVEL SHIFT PRE DRIVER HIGH SIDE LEVEL SHIFT PRE DRIVER − ++− PROTECTOR CIRCUIT FILTER VBBA VDRVA VBBA OUTA 9 SA 10 VBBB 11 VBOOTB 12 VDRVB 13 VDDB 14 GNDB 15 INB 16 ENB 17 DIAGB 18 VBBB VDRVB UNDER VOLTAGE LOCK-OUT THERMAL SHUT DOWN CROSS OVER DELAY LOW SIDE LEVEL SHIFT PRE DRIVER HIGH SIDE LEVEL SHIFT PRE DRIVER − ++− PROTECTOR CIRCUIT FILTER VBBB VDRVB VBBB OUTB 19 SB 20 83
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83
HCD-C770/C990
– AMP Board –
IC301,
304,
306,
307,
309,
311
CXD9702L
IC814
TC7WH157FK (TE85R)
SELECT
11
6
ST
11
7
A
1
2
3
A
B
Y
5
Y
B
GND
4
VCC
8
Y
EN
G
Y
CROSS OVER
DELAY
FILTER
THERMAL
SHUT DOWN
UNDER
VOLTAGE
LOCK–OUT
HIGH SIDE
LEVEL SHIFT
PROTECTOR
CIRCUIT
PRE
DRIVER
LOW SIDE
LEVEL SHIFT
PRE
DRIVER
−
16
INB
15
GNDB
14
VDDB
20
SB
19
OUTB
13
VDRVB
12
VBOOTB
11
VBBB
VDRVB
VBBB
17
ENB
18
DIAGB
CROSS OVER
DELAY
THERMAL
SHUT DOWN
UNDER
VOLTAGE
LOCK–OUT
HIGH SIDE
LEVEL SHIFT
PROTECTOR
CIRCUIT
PRE
DRIVER
LOW SIDE
LEVEL SHIFT
PRE
DRIVER
6
INA
5
GNDA
4
VDDA
10
SA
9
OUTA
3
VDRVA
2
VBOOTA
1
VBBA
VDRVA
VBBA
7
ENA
8
DIAGA
VDRVA
VDRVB
VBBA
VBBB
VBBB
+
FILTER
+
−
−
VBBA
+
+
−