Do you have a question about the Sony HCD-M90 and is the answer not in the manual?
CD Player | Yes |
---|---|
Cassette Deck | Yes |
Remote Control | Yes |
Tuner | AM/FM |
Speakers | 2-way speakers |
Type | Mini Hi-Fi System |
Power Output | 100W (50W per channel) |
Power output and harmonic distortion details for amplifier section.
Specifications for DVD player, tape deck, and other related sections.
Tuning range, antenna, and frequency for FM/AM tuners.
Power needs, consumption, physical size, and weight of the unit.
Precautions for component replacement, flexible boards, and safety tests.
Instructions for AC leakage testing and general safety warnings.
Precautions for handling optical components and laser diodes.
Procedures for service position setup and releasing the disc tray lock.
Information on former vs. new board part numbers.
Notes on replacing the DVD board and initializing memory.
Identification of controls on the main unit and remote.
Step-by-step guides for clock setting and adjustment.
Outline of the disassembly sequence for key parts like boards and mechanisms.
Steps to remove the side and top panels.
Steps to disassemble the mechanical deck and front panel.
Steps to remove the back panel assembly and main board.
Steps to remove the control board and DAC board.
Steps to remove the DVD board and mechanism deck.
Steps to remove loading board, motor, and RF-240 board.
Steps to remove the tray and optical device.
Procedures for Cold Reset, Panel Test, and DVD specific test modes.
Mode for diagnosis and adjustment using on-screen display.
Accessing the Syscon Diagnosis check menu and navigation.
Performing comprehensive diagnostics including version and peripheral checks.
Diagnosing servo systems, power supply, ARP, and RAM integrity.
Diagnosing ARP to RAM bus, RAM data, and AV decoder integrity.
Checking video/audio paths, error codes, and initiating auto adjustment.
Detailed steps for adjusting DVD single-layer and CD discs.
Detailed steps for adjusting DVD dual-layer discs.
Accessing the manual operation menu for servo control.
Procedures for disc check and type selection.
Controlling servo on/off functions for replay.
Procedures for track/layer adjustments, manual ops, and memory checks.
Clearing and reading the error occurrence history data.
Modes for tray lock and DVD color system selection.
Changing the AM channel step for tuner.
Adjusting video level and checking S-video output.
Procedure for adjusting the recording bias of the tape deck.
Block diagram illustrating the DVD servo digital signal processor and related components.
Block diagram showing signal paths within the main DVD section.
Block diagram showing remaining signal paths in the main DVD section.
Block diagram illustrating signal flow for tuner and tape deck sections.
Block diagram showing the audio amplifier and control signal paths.
Block diagram of system controller and power supply circuits.
Guidelines for interpreting PWB and schematic diagrams, and board locations.
Component layout for the RF-240 board, Sides A and B.
Schematic diagram of the RF-240 board, showing component connections.
Component layout for the RF-240 board (Suffix-22).
Schematic diagram of the RF-240 board (Suffix-22).
Component layouts for DVD board (Side A) and loading board.
Component layout for the DVD board (Side B).
Schematic for DVD board (1/7) and loading boards.
Schematic diagram for the second part of the DVD board.
Schematic diagram for the third part of the DVD board.
Schematic diagram for the fourth part of the DVD board.
Schematic diagram for the fifth part of the DVD board.
Schematic diagram for the sixth part of the DVD board.
Schematic diagram for the seventh part of the DVD board.
Schematic for DVD board (1/7) and loading boards (Suffix-22).
Schematic for DVD board (2/7) (Suffix-22).
Schematic for DVD board (3/7) (Suffix-22).
Schematic for DVD board (4/7) (Suffix-22).
Schematic for DVD board (5/7) (Suffix-22).
Schematic for DVD board (6/7) (Suffix-22).
Schematic for DVD board (7/7) (Suffix-22).
Component layouts for DVD board (Side A) and loading board (Suffix-22).
Component layout for the DVD board (Side B) (Suffix-22).
Component layouts for the DAC board (Side A and B).
Schematic diagram of the DAC board showing component connections.
Component layout for the TC board (Suffix-12).
Schematic diagram of the TC board (Suffix-12).
Component layout for the TC board (Suffix-32).
Schematic diagram of the TC board (Suffix-32).
Schematic diagram of the MAIN board (1/2) for Suffix-14.
Schematic diagram of the MAIN board (2/2) for Suffix-14.
Diagram showing connections for the JACK board.
Component layouts for MAIN and JACK boards.
Component layouts for MAIN (Suffix-16) and JACK (Suffix-12) boards.
Schematic diagram of the MAIN board (1/2) for Suffix-14.
Schematic diagram of the MAIN board (2/2) for Suffix-16.
Component layouts for CONTROL (Suffix-11) and VIDEO boards.
Schematic diagrams for CONTROL (Suffix-11) and VIDEO boards.
Component layouts for CONTROL (Suffix-12) and VIDEO boards.
Schematic diagrams for CONTROL (Suffix-12) and VIDEO boards.
Component layout for the SWITCH board (Suffix-11).
Schematic diagram of the SWITCH board (Suffix-11).
Component layout for the SWITCH board (Suffix-12).
Schematic diagram of the SWITCH board (Suffix-12).
Component layout for the POWER board (Suffix-11).
Schematic diagram of the POWER board (Suffix-11).
Component layout for the POWER board (Suffix-12, -21).
Schematic diagram of the POWER board (Suffix-12, -21).
Waveform measurements for the RF-240 board.
Waveform measurements for various signals on the DVD board.
Further waveform measurements for the DVD board.
Waveform diagrams for DAC, TC, MAIN, and CONTROL boards.
Block diagrams for IC102, IC701, and IC801 on the DVD board.
Block diagrams for IC302 (DAC) and IC101, IC201 (MAIN) boards.
Block diagrams for IC323 and IC326 on the CONTROL board.
Detailed pin function description for IC001 on the RF-240 board.
Continued pin function description for IC001 on the RF-240 board.
Pin function description for IC103 on the DVD board.
Continued pin function description for IC103 on the DVD board.
Pin function description for IC302 on the DVD board.
Continued pin function description for IC302 on the DVD board.
Continued pin function description for IC302 on the DVD board.
Continued pin function description for IC302 on the DVD board.
Pin function description for IC306 on the CONTROL board.
Continued pin function description for IC306 on the CONTROL board.
Continued pin function description for IC306 on the CONTROL board.
Exploded view of the unit's side panels and chassis.
Exploded view of the front panel components.
Exploded view of the top panel components.
Exploded view of the chassis section 1.
Exploded view of the chassis section 2.
Exploded view of the chassis section 3.
Exploded view of the mechanism deck components.
Exploded view of the base unit components.
List of electrical parts for the control board (Suffix-11).
List of electrical parts for the control board (Suffix-12).
List of electrical parts for the main board (Suffix-14).
List of electrical parts for DAC and DVD boards (Suffix-21).
List of electrical parts for the DVD board (Suffix-22).
List of electrical parts for the main board (Suffix-16).
List of electrical parts for the RF-240 board (Suffix-11 and -22).
List of capacitors and connectors for the DVD board (Suffix-21).
List of capacitors and connectors for the DVD board (Suffix-22).
List of resistors for the DVD board (Suffix-22).
List of electrical parts for the main board (Suffix-14).
List of components for JACK, SWITCH, DIODE, IC, COIL, and RESISTOR.
List of electrical parts for the TC board (Suffix-12).
List of electrical parts for the main board (Suffix-14).
List of electrical parts for the main board (Suffix-16).
Continuation of the electrical parts list for the MAIN board (Suffix-16).
List of resistors for the MAIN board (Suffix-16).
List of electrical parts for the POWER board (Suffix-11).
List of electrical parts for the POWER board (Suffix-12, -21).
List of capacitors and connectors for the RF-240 board.
List of electrical parts for the SWITCH board (Suffix-11).
List of electrical parts for the SWITCH board (Suffix-12).
List of electrical parts for the TC board (Suffix-12).
List of electrical parts for the TC board (Suffix-32).
List of electrical parts for the video board.
List of accessories provided with the unit.
Record of revisions made to the service manual with dates and descriptions.