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MAIN BOARD
TABLE OF CONTENTS
Internal IC Diagram ......................................................... 7-1
Block Diagram ................................................................. 7-2
Circuit Diagram - Servo Part ........................................... 7-3
Circuit Diagram - Main Part ............................................. 7-4
Layout Mapping - Main Part ............................................ 7-5
Circuit Diagram - Tape Part ............................................. 7-6
PCB Layout Top View ...................................................... 7-7
Layout Mapping - Main Part ............................................ 7-8
PCB Layout Bottom View ................................................ 7-9
Electrical Parts list ......................................................... 7-10
7-1
7-1
TDA8920 INTERNAL IC DIAGRAM
OUT1
VSSP1
VDDP2
DRIVER
HIGH
MBL461
OUT2
BOOT2
TDA8920TH
BOOT1
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
CONTROL
AND
HANDSHAKE
PWM
MODULATOR
MANAGER
OSCILLATOR
TEMPERATURE SENSOR
CURRENT PROTECTION
STABI
MODE
INPUT
STAGE
mute
9
8
IN1
−
IN1
+
22
21
20
17
16
15
VSSP2
VSSP1
DRIVER
HIGH
DRIVER
LOW
RELEASE2
SWITCH2
ENABLE2
CONTROL
AND
HANDSHAKE
PWM
MODULATOR
11
SGND1
7
OSC
2
SGND2
6
MODE
INPUT
STAGE
mute
5
4
IN2
−
IN2
+
19
24
VSSD
HW
1
VSSA2
12
VSSA1
3
VDDA2
10
VDDA1
23
13
18
14
VDDP2
PROT
STABI
VDDP1
Содержание FWD21
Страница 7: ...1 7 ...
Страница 16: ...2 2 REPAIR INSTRUCTIONS 2 2 ...
Страница 17: ...2 3 REPAIR INSTRUCTIONS 2 3 ...
Страница 21: ...4 1 SET BLOCK DIAGRAM 4 1 ...
Страница 22: ...4 2 SET WIRING DIAGRAM 4 2 ...
Страница 37: ...CIRCUIT DIAGRAM MAIN BOARD 1 2 3 4 5 6 1 2 3 4 5 6 A B C D A B C D 7 4 7 4 ...
Страница 38: ...7 5 7 5 CIRCUIT DIAGRAM MAPPING MAIN BOARD SERVO PART ...
Страница 40: ...7 7 7 7 A 1 2 3 4 5 1 2 3 4 5 B C D E A B C D E C49 PCB LAYOUT MAIN BOARD TOP VIEW ...
Страница 41: ...PCB LAYOUT MAPPING MAIN BOARD TOP VIEW PCB LAYOUT MAPPING MAIN BOARD BOTTOM VIEW 7 8 7 8 ...
Страница 51: ...MEASUREMENT SETUP AUDIO Generator IN JK401 OUT JK501 DUT LOAD 3OHM LEVEL DISTORTION METER SCOPE 10 2 ...
Страница 53: ...10 4 SERVICE POSITION ...
Страница 54: ...10 5 SUBWOOFER SET BLOCK DIAGRAM 10 5 ...
Страница 55: ...SUBWOOFER SET WIRING DIRGRAM 10 6 10 6 ...
Страница 65: ...10 16 MECHANICAL EXPLODED VIEW 2 3 4 1 A B C D E G F H 10 16 ...