Do you have a question about the Philips CD690 and is the answer not in the manual?
Describes power, voltage, frequency, and general operating parameters.
Details line output, headphone output, and audio performance metrics.
Covers dimensions, weight, and optical system details.
Lists all physical buttons and indicators on the player's front panel.
Identifies all input/output ports and connectors on the player.
Advises on handling sensitive components to prevent ESD damage.
Outlines mandatory safety regulations for servicing the device.
Warns about invisible laser hazards and precautions.
Step-by-step guide for removing the player's top cover.
Instructions for detaching the rear panel and front fascia.
Guide for disassembling the CD disc loading system.
Steps for taking out the main circuit board.
Guidance on safely soldering and desoldering surface-mount components.
Lists essential tools and test discs for servicing.
Comprehensive list defining various signal acronyms and terminal functions.
Illustrates the functional interconnections of the CD player's main sections.
Detailed electrical connections between all major internal assemblies.
Schematic detailing the power supply unit's components and layout.
Shows the specific connections to the main power transformer.
Schematic diagram for the audio headphone amplification stage.
Circuit schematic for the infrared remote control signal receiver.
Visual guide to component placement on the headphone board.
Visual guide to component placement on the IR receiver board.
Schematic illustrating the logic for player controls and display.
Component placement diagram for the front control panel.
Schematic for the laser diode signal control circuitry.
Component layout for the diode signal controller board.
Schematic detailing the servo control and audio decoding functions.
Diagram showing component placement on the servo/decoder board's component side.
Diagram showing component placement on the servo/decoder board's solder side.
Visual representation of the sequence for system initialization.
Decision tree for diagnosing and resolving common player malfunctions.
Instructions for accessing and utilizing the built-in diagnostic test program.
Table listing system and operating error codes with their meanings.
Procedures for verifying critical component functionality.
Important safety advisories to follow during component testing.
Guidelines for testing key performance specifications.
Diagram showing the assembly breakdown of the disc loading mechanism.
Inventory of mechanical components for the player's chassis and loader.
List detailing the different screws used in assembly.
Comprehensive illustration of all player parts in an exploded format.
List of electronic components for the servo/decoder board and general parts.
Inventory of capacitors and resistors.
Further listing of resistors and coils used in the circuitry.
Inventory of all diodes used in the player.
Inventory of transistors and integrated circuits.
Comprehensive list for the diode signal controller panel.
List of parts for the front control and display interface.
List of parts for the headphone and IR receiver panels.
List of other general electrical parts.