Sharp XL-DK255 Service Manual - Page 1

XL-DK225 SERVICE MANUAL No. S7734XLDK225/ MICRO COMPONENT SYSTEM VIDEO /AUX MODEL XL-DK225 XL-DK225 Micro Component System consisting of XL-DK225 (main unit) and CP-DK225 (speaker system). • In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used. CONTENTS PRECAUTIONS FOR USING LEAD-FREE SOLDER CHAPTER 1. GENERAL DESCRIPTION [1] Important Service Safety Precaution 1-1 [2] Specifications 1-1 [3] Names Of Parts 1-2 CHAPTER 2. ADJUSTMENTS [1] CD Section 2-1 [2] Test Mode 2-2 [3] Standard Specification Of Stereo System Error Message Display Contents 2-4 CHAPTER 3. MECHANICAL DESCRIPTION [1] Removing And Reinstalling The Main Parts 3-1 [2] Disassembly 3-2 CHAPTER 4. BLOCK DIAGRAM [1] Block Diagram 4-1 CHAPTER 5. CIRCUIT DESCRIPTION [1] Waveforms Of Servo Circuit 5-1 [2] IC Voltage 5-3 CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT [1] Notes On Schematic Diagram 6-1 [2] Types Of Transistor And LED 6-1 [3] Schematic Diagram 6-2 [4] Charts Of Connecting Wires 6-10 [5] Wiring Side of PWB 6-12 CHAPTER 7. FLOWCHART [1] Troubleshooting 7-1 CHAPTER 8. OTHER [1] Function Table Of IC 8-1 [2] FL Display 8-9 PARTS GUIDE Parts marked with " ! " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set. SHARP CORPORATION This document has been published to be used for after sales service only. - 1 The contents are subject to change without notice.