Philips HTS4600, Service Manual

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8 - 1 8 - 1
AMP BOARD
TABLE OF CONTENTS
Internal IC Diagram ........................................................................... 8-1
Circuit Diagram .................................................................................. 8-2
PCB Layout Top view ....................................................................... 8-3
PCB Layout Bottom View .................................................................. 8-4
INTERNAL IC DIAGRAM - TDA8920B
INTERNAL IC DIAGRAM - CO4558A
9 (3)
8 (2)
IN 1M
IN 1P
SGND 1
11 (5)
OSC
7 (1)
MODE
6 (23)
SGND 2
2 (19)
IN 2 P
IN2M
5 (22)
4 (21)
MUTE
1 (18)
12 (6)
V
SSA2
V
SSA1
24 (17)
V
SSD
ENABLE 2
SWITCH 2
RELEASE 2
19 (-)
N.C.
V
SSP1
V
SSP2
17 (11) 20 (13)
OUT 2
21 (14)
22 (15)
BOOT 2
V
DDP 2
V
SSP 1
TDA8920BTH
(TDA8920BJ)
OUT 1
BOOT 1
16 (10)
14 (8)
15 (9)
23 (16)
V
DDP 1
V
DDP 2
RELEASE 1
SWITCH 1
ENABLE 1
13 (7)
18 (12)
STAB 1 PROT
MUTE
3 (20) 10 (4)
V
DDA2
V
DDA1
INPUT
STAGE
INPUT
STAGE
MODE
OSCILLATOR
PWM
MODULATOR
PWM
MODULATOR
MANAGER
STAB1
CONTROL
AND
HANDSHAKE
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTIONS
CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
HIGH
DRIVER
LOW
DRIVER
LOW