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INDEX
Ch1 Precautions
Safety Precautions .......................................1-1 Servicing Precautions ..................................1-2 Precautions for Electrostatically Sensitive Device (ESDs ...............................1-3 Special Precautions and Warning Lables for Laser Products ............................1-4 Special Precautions for HDD .......................1-5

Ch8 Ch9 Ch10

Electrical Parts List Block Diagram Wiring Diagram

Electrical Parts Lis .......................................8-1

Block ............................................................9-1

Ch2

Product Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 .2-2 .2-3 .2-4

Wiring Diagram ..........................................10-1 GND ...........................................................10-2 VDD............................................................10-3 SMPS .........................................................10-4

Features . . . . . . . . . . . . . Specifications . . . . . . . . . Accessories . . . . . . . . . . Specification Comparison

Ch3

Product Functions

Ch11

PCB Diagram

SPK connection ...........................................3-1 Main Functions.............................................3-2 New Functions .............................................3-3

MAIN PCB..................................................11-1 MAIN PCB Description ..............................11-2 SMPS-PCB ................................................11-4

Ch4 Ch5
Separate Separate Separate Separate

Adjustments How to disassemble
CABINET-TOP ..............................5-1 REAR-COVER..............................5-2 CHASSIS-BACK...........................5-3 PCB ..............................................5-5

Ch12

Schematic Diagram

DVD flash Initialization & Update .................4-1

MAIN ..........................................................12-1 KEY ............................................................12-9 SMPS .......................................................12-10

Ch13

Circuit Board Description

Ch6

TroubleShooting

PCB Assy. Layout 1 (HT-X250/X200).........13-1 Functional Description (SMPS) .............13-2 Functional Description (Main,Front) ........13-4 Functional Description (Amp)................13-4

Main .............................................................6-1 Output ..........................................................6-2 In case of Power Protection .........................6-3 AMP Pre-Inspection relating to Power Protection..6-4

Ch14
Definition of Home Theater ........................14-1 Concept of Sound .............................14-2 Home Theater Sound Format ...............14-3 Home Theater Components .................14-4

Ch7

Exploded Views and Parts List

HT-X250 Exploded View ..............................7-1 HT-X250 Parts List .......................................7-2