Sony HCD-A490 User Manual

Details on CD mechanism, base unit, and optical pick-up types.

Information on tape transport mechanism types for decks A and B.

Specifications for FM and AM tuner sections, including tuning range and frequency.

Specifications for amplifier output power, input sensitivity, and impedance.

General specifications including power requirements, mass, and physical dimensions of the unit.

Crucial notes regarding the replacement of chip components and laser safety.

Instructions for handling optical pick-up blocks and base units, including ESD precautions.

Safety notes for checking laser diode emission, specifying safe observation distance.

Identifies and describes the location of various controls on the unit and remote commander.

Explains the functions of each button on the RM-S421 remote commander.

Precautions for mechanical adjustments, including cleaning, demagnetization, and tool usage.

Table of torque values for various mechanical adjustments, including FWD and REV.

Procedures for electrical adjustments and measurements for the deck section, L-CH and R-CH.

Details on test tapes used for head azimuth, level, and tape speed adjustments.

Step-by-step procedure for adjusting the record/playback head azimuth for decks A and B.

Instructions for adjusting tape speed for both decks, starting with high speed.

Procedure for adjusting normal speed playback, including frequency counter readings.

Steps to adjust playback level for decks A and B, specifying output levels and channel differences.

Procedure for adjusting high speed playback, detailing short-circuiting CN904 and adjusting RV72A.

Procedure for record bias adjustment for Deck B, covering AFC OSC and playback mode.

Procedure for record level adjustment for Deck B, involving AFC OSC and recorded portion playback.

Adjustments for the FM section, including setup for signal generators and tuning.

Steps to adjust FM tuned level, including supplying signals and adjusting RV2.

Adjustments for the AM section, using loop antennas and signal generators.

Steps to adjust AM tuned level, specifying loop antenna input and adjusting RV1.

Subcarrier adjustment procedure specifically for CIS models, involving signal generators and adjustments.

Procedure for VCO frequency adjustment, specifying switch position and signal generator settings.

Important notes for CD section operation, emphasizing checking items in order and using specific discs.

Procedure for checking the S-curve waveform, including oscilloscope connections and level checks.

Procedure for checking E-F balance, involving connecting test points and observing waveforms.

Procedure for checking the RF signal level, connecting the oscilloscope to test points.

Procedure for checking RF free-run frequency, connecting a frequency counter to test points.

Specifies the component side location for adjustments on the main board.

Specifies the component side location for adjustments on the BD board.

Diagram illustrating the location of various circuit boards within the unit.

Block diagram illustrating the signal flow and components within the CD section.

Block diagram showing the functional units and signal paths within the deck section.

Block diagram detailing the main section of the unit, showing interconnections between boards.

Block diagrams for various ICs used in the Tuner section and other parts of the unit.

Schematic diagram for the tuner section, detailing electronic components and connections.

Printed wiring board layouts for the main section of the unit, showing component placement.

Schematic diagrams for the main section, including power amp and HP boards.

Schematic diagram for the CD section, showing BD board, CD panel board, and loading board connections.

Printed wiring board layouts for the CD section, including CD panel and loading boards.

Printed wiring board layouts for the deck section, showing MD-A/B boards and panel boards.

Schematic diagram for the deck section, detailing connections between various boards like MD, TC, and PANEL.

Printed wiring board layouts for the panel board specific to AEP, G, and IT models.

Schematic diagram for the panel board, applicable to AEP and IT models.

Schematic diagram for the panel board, applicable to UK, EE, and CIS models.

Printed wiring board layouts for the panel board specific to AEP, IT, and G models.

Detailed pin functions and descriptions for IC101 (CXD2515Q).

Detailed pin functions and descriptions for IC101 (CXD2515Q) continued.

Detailed pin functions and descriptions for IC103 (CXD2565M).

Detailed pin functions and descriptions for IC201 (CXP82316-035Q).

Detailed pin functions and descriptions for IC601 System Control (µPD78043GF-079).

Detailed pin functions and descriptions for IC601 System Control (µPD78043GF-079) continued.

Detailed pin functions and descriptions for IC601 System Control (TMP47C1270AN-H227).

Detailed pin functions and descriptions for IC601 System Control (TMP47C1270AN-H227) continued.

Detailed pin functions and descriptions for IC902 Deck Controller (M50964-261FP).

Detailed pin functions and descriptions for IC902 Deck Controller (M50964-261FP) continued.

Detailed pin functions and descriptions for IC1501 TA Control (µPD78042GF-056-3B9).

Detailed pin functions and descriptions for IC1501 TA Control (µPD78042GF-056-3B9) continued.

Exploded view of the cabinet section, showing assembly of outer parts.

Exploded view of the front panel section, detailing buttons, indicators, and controls.

Exploded view of the mechanism deck chassis, showing main structural components.

Exploded view of Deck A and Deck B mechanisms, part 1, showing motors and levers.

Exploded view of Deck A and Deck B mechanisms, part 2, showing gears, sliders, and chassis.

Exploded view of the CD mechanism (CDM14-5BD13), showing disc tray and motor assembly.

Exploded view of the optical pick-up block section (BU-5BD13), showing sled and spindle components.

List of capacitors used in the BD board, including part numbers and specifications.

List of connectors used on the BD board, with part numbers.

List of integrated circuits used on the BD board, including part numbers.

List of coils used on the BD board, with part numbers and specifications.

List of motors used on the BD board, including part numbers.

List of resistors used on the BD board, including part numbers and values.

List of resistors for the BD CD Panel section, including values and part numbers.

List of switches for the BD CD Panel section, including part numbers.

List of vibrator components for the CD panel.

List of ICs for the CD panel, including part numbers.

List of connectors for the CD panel.

List of diodes for the CD panel.

List of components including vibrators, connectors, ICs, resistors, and switches for various boards.

List of capacitors for the main board, detailing part numbers and specifications.

List of connectors for the main board, with part numbers.

List of diodes for the main board, including part numbers.

List of ICs for the main board, including part numbers.

List of resistors for the main board, including part numbers and values.

List of capacitors for the main board, continuing from previous pages.

List of capacitors for the main board, continuing from previous pages.

List of connectors for the main board.

List of diodes for the main board.

List of ICs for the main board, including part numbers.

List of IFT components for the main board.

List of jack components for the main board.

List of resistors for the main board, including part numbers and values.

List of resistors for the main board, continuing from previous pages.

List of resistors for the main board, continuing from previous pages.

List of variable resistors for the main board.

List of vibrator components for the main board.

List of capacitors for the main TC board.

List of connectors for the main TC board.

List of diodes for the main TC board.

List of ICs for the main TC board.

List of resistors for the main TC board.

List of resistors for the main TC and MD-A boards.

List of ICs for the MD-A and MD-B boards.

List of jumper resistors for the MD-A and MD-B boards.

List of transistors for the MD-A and MD-B boards.

List of resistors for the MD-A and MD-B boards.

List of variable resistors for the MD-A and MD-B boards.

List of capacitors for the MD-A and MD-B boards.

List of coils for the MD-B panel.

List of transistors for the MD-B panel.

List of resistors for the MD-B panel.

List of capacitors for the MD-B panel.

List of capacitors for the panel, including part numbers.

List of connectors for the panel.

List of diodes for the panel.

List of fluorescent indicator tubes for the panel.

List of ICs for the panel, including part numbers.

List of coils for the panel.

List of transistors for the panel.

List of resistors for the panel, including part numbers and values.

List of resistors for the panel, continuing from previous pages.

List of tactile and slide switches for the panel, detailing functions.

List of vibrator components for the panel.

List of capacitors for the panel.

List of connectors for the panel.

List of diodes for the panel.

List of resistors for the panel, continuing from previous pages.

List of resistors for the panel, continuing from previous pages.

List of variable resistors for the panel.

List of switches for the panel, detailing functions.

List of switches for the panel, detailing functions.

List of diodes for the panel.

List of resistors for the panel, including part numbers and values.

List of capacitors for the polar board.

List of connectors for the polar board.

List of diodes for the polar board.

List of ICs for the polar board.

List of coils for the polar board.

List of transistors for the polar board.

List of resistors for the polar board.

List of switches for the polar board.

List of capacitors for the power and power amp boards.

List of diodes for the power and power amp boards.

List of ICs for the power and power amp boards.

List of relay components for the power board.

List of resistors for the power and power amp boards.

List of transformers for the power board.

List of connectors for the power board.

List of connectors for the power amp and VR boards.

List of diodes for the power amp and VR boards.

List of ICs for the power amp and VR boards.

List of resistors for the power amp and VR boards.

List of transistors for the power amp and VR boards.

List of variable resistors for the VR board.

List of miscellaneous components including wires and hardware.

Lists accessories, packing materials, and instruction manuals included with the unit.