Service manual

XL-UH240
– 1
MICRO COMPONENT SYSTEM
SERVICE MANUAL
No. S1601XLUH240/
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
XL-UH240
MODEL
In the interests of user-safety (Required by safety regula-
tions in some countries) the set should be restored to its
original condition and only parts identical to those specified
be used.
XL-UH240 Micro Component System consisting of XL-
UH240 main unit) and CP-UH240 (speaker system).
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] IMPORTANT SERVICE NOTES (FOR
U.S.A. ONLY)................................................1-1
[2] SPECIFICATIONS........................................1-2
[3] NAMES OF PARTS ......................................1-3
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
[4] CD Changer Mechanism Section ................2-5
CHAPTER 3. MECHANICAL DESCRIPTION
[1] REMOVING AND REINSTALLING THE MAIN
PARTS..........................................................3-1
[2] DISASSEMBLY.............................................3-3
CHAPTER 4. DIAGRAMS
[1] BLOCK DIAGRAM........................................4-1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] WAVEFORMS OF SERVO CIRCUIT..............5-1
[2] 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] WIRING SIDE OF PWB/SCHEMATIC
DIAGRAM .......................................................6-2
CHAPTER 7. FLOWCHART
[1] TROUBLESHOOTING....................................7-1
CHAPTER 8. OTHERS
[1] FUNCTION TABLE OF IC ..............................8-1
[2] FL DISPLAY....................................................8-8
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.
CONTENTS

Summary of content (124 pages)