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General| Audio Channels | 2.0 |
|---|---|
| CD Player | Yes |
| Radio Tuner | FM/AM |
| USB Port | Yes |
| USB Playback | Yes |
| Equalizer | Yes |
| Bass Boost | Yes |
| Remote Control | Yes |
| Playable Media | CD, CD-R, CD-RW |
| Preset Stations | 30 |
| Audio Input | AUX |
| Type | Mini Hi-Fi System |
| Speaker Type | 2-way |
Details of amplifier power output for front and subwoofer speakers.
Specifications for the HCD-GT44 model, including front speaker and subwoofer power.
Specifications for the HCD-GT22 model, including inputs, outputs, and USB/CD sections.
Precautions for handling the optical pick-up block to prevent electrostatic discharge and damage.
Safety instructions for checking laser diode emission to avoid eye damage.
Information on using unleaded solder, including its characteristics and handling precautions.
Procedure to disable the antitheft lock for demonstration discs in stores.
Step-by-step guide for disassembling the unit in a specified order.
Procedures for removing the side and top covers of the unit.
Steps for removing the CD lid, CD mechanism deck, and USB board.
Procedure for removing the front panel and mecha deck assemblies.
Procedures for removing the back panel and main board assemblies.
Instructions for removing the CD, Driver, and SW boards.
Procedures for removing the optical pick-up block and sensor board.
Steps for removing the motor (TB) and motor (LD) boards.
Resets the system to initial conditions, clearing stored data in RAM.
Adjusts the AM tuning interval step between 9 kHz and 10 kHz.
Moves the optical pick-up to a vibration-durable position for shipping.
Enables the disc table lock function for sample discs in stores.
Displays amplifier IC parameters and VACS status.
Checks microprocessor operations, including EQ and volume adjustments.
Checks model, destination, and software version.
Displays error codes for the CD section, including mechanism and pick-up errors.
Important precautions to follow before performing mechanical adjustments.
Specifications and steps for measuring torque for FWD and FF/REW modes.
Specifications for measuring tape tension during FWD operation.
Adjustment details for the deck section, including signal levels.
Procedure for adjusting playback head azimuth for optimal L-CH and R-CH output.
Procedure to check FM tuning level using a signal generator.
Procedure to check the focus bias of the optical pick-up block using an oscilloscope.
Block diagram illustrating the CD servo and USB sections of the system.
Block diagram showing the main functional sections of the unit.
Block diagram detailing the amplifier section, including power stages and control signals.
Block diagram illustrating the panel interface and power amplifier connections.
Component layout and traces on the CD board.
Circuit diagram showing component interconnections for the CD board.
Component layouts for driver, SW, sensor, and motor boards.
Circuit diagrams for the driver, sensor, and motor boards.
Component layout for the USB board.
Circuit diagram for the USB controller and related components.
Component layout for the TC (Tape Control) board.
Circuit diagram for the TC board, showing tape mechanism control.
Example waveforms for CD, USB, and Panel sections for testing.
Component layout for the main board.
Part 1 of the main board circuit diagram.
Part 2 of the main board circuit diagram.
Part 3 of the main board circuit diagram.
Part 4 of the main board circuit diagram.
Component layout for the MIC board.
Circuit diagram for the MIC input section.
Component layout for the AMP board for GT22/GT55 models.
Circuit diagram for the AMP board of GT22/GT55 models.
Component layout for the AMP board for GT44 model.
Circuit diagram for the AMP board of GT44 model.
Component layout for the SUB WOOFER section of GT44/GT55 models.
Circuit diagram for the SUB WOOFER section of GT44/GT55 models.
Component layout for the PANEL board.
Circuit diagram for the PANEL board, including display and controls.
Component layouts for the KEY LEFT, KEY TOP, and KEY RIGHT boards.
Circuit diagrams for the KEY LEFT, KEY TOP, and KEY RIGHT boards.
Component layout for the TRANS board for GT22/GT55 models.
Circuit diagram for the TRANS board of GT22/GT55 models.
Component layout for the TRANS board for GT44 model.
Circuit diagram for the TRANS board of GT44 model.
Block diagrams illustrating the internal structure of key ICs.
Detailed description of pin functions for various ICs across different boards.
Exploded view of the unit's case assembly, showing panels and screws.
Exploded view of the key top board assembly, detailing buttons and related parts.
Exploded view of the TC Mecha Deck mechanism, showing motors and belts.
Exploded view of the panel board assembly, showing knobs, buttons, and encoders.
Exploded view of the front panel, detailing external controls and indicators.
Exploded view of the main board assembly, showing its placement and related components.
Exploded views of the power board and sub woofer board assemblies.
Exploded view of the main chassis, showing transformer, fuse, and cord assemblies.
Exploded view of the CD mechanism deck, showing screws, wires, motors, and gears.
Exploded view of the CD mechanism deck, detailing levers, pulleys, and chassis.
List of capacitors used in the circuit, including part numbers and specifications.
List of diodes used in the circuit, including part numbers and descriptions.
List of integrated circuits used in the circuit, with part numbers and descriptions.
List of resistors used in the circuit, including part numbers and specifications.
List of transistors used in the circuit, including part numbers and descriptions.
List of various switches used for controls and functions.
List of connectors used for interconnections between boards.
List of LEDs used for indicators on the panel.
Part number for the vibrator used in the unit.
List of miscellaneous parts like cores, cables, fans, and motors.
List of accessories provided with the unit, like power adaptors.
