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Sony HCD-GNX700 User Manual

Sony HCD-GNX700
86 pages
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HCD-GNX700/GNX800
E Model
HCD-GNX700/GNX800
Australian Model
HCD-GNX800
SERVICE MANUAL
MiNi Hi-Fi COMPONENT SYSTEM
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
9-887-068-01
2006B02-1
© 2006.02
SPECIFICATIONS
Ver.1.0 2006.02
– Continued on next page –
HCD-GNX700/GNX800 is the Amplifier,
CD player, tape deck and tuner
section in MHC-GNX700/GNX800.
Model Name Using Similar Mechanism HCD-GN880
CD CD Mechanism Type CDM74KF-F1BD81A
Section Base Unit Name BU-F1BD81A
Optical Pick-up Name KSM-215DCP/C2NP
TAPE Model Name Using Similar Mechanism HCD-GNX80
Section Tape Transport Mechanism Type CWN42FF601
Amplifier section
HCD-GNX800
The following are measured at AC 120, 220, 240 V, 50/60 Hz
Front/Surround speaker
DIN power output (rated) 180 + 180 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
225 + 225 watts
(6 ohms at 1 kHz, 10% THD)
Subwoofer
Continuous RMS power output (reference)
200 watts
(8 ohms at 100 Hz, 10% THD)
HCD-GNX700
The following are measured at AC 120, 220, 240 V, 50/60 Hz
Front speaker
DIN power output (rated) 170 + 170 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
220 + 220 watts
(6 ohms at 1 kHz, 10% THD)
Subwoofer
Continuous RMS power output (reference)
160 watts
(8 ohms at 100 Hz, 10% THD)
Inputs
VIDEO/MD (AUDIO) IN (phono jacks):
voltage 250/450 mV,
impedance 47 kiloohms
TV (AUDIO) IN (phono jack): voltage 250 mV,
impedance 47 kiloohms
MIC (phone jack): sensitivity 1 mV,
impedance 10 kiloohms
Outputs
PHONES (stereo mini jack): accepts headphones of 8 ohms or more
FRONT SPEAKER/SURROUND SPEAKER/
SUBWOOFER OUT: Use only the supplied speaker
Photo: HCD-GNX800

Table of Contents

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Sony HCD-GNX700 Specifications

General IconGeneral
TypeMini Hi-Fi Component System
Power Output100W
CD PlayerYes
BluetoothNo
USB PortNo
Remote ControlYes
Radio TunerAM/FM
Speaker Configuration2.0
FunctionsCD, Radio, Cassette

Summary

Servicing Notes and Precautions

Optical Pick-up Block Handling

Guidance on handling the optical pick-up block to prevent electrostatic breakdown and damage.

Laser Diode Emission Checks

Procedures for checking laser diode emission and focus search operation.

Model Identification

Details on identifying different models based on their back panel.

General Information and Controls

Locating Controls on Main Unit

Overview of controls and their locations on the main unit, including top and front panels.

Remote Control Functions

Description of buttons on the remote control and instructions for setting the clock.

Disassembly Procedures

Disassembly Flow Chart

A sequential guide illustrating the order of disassembly for various set components.

Side Panel and Top Case Removal

Step-by-step instructions for removing the side panels and top case.

Loading Panel Removal

Procedure for removing the loading panel, including pulley and disc tray.

Front Panel Assembly Removal

Instructions for detaching the front panel assembly, including connectors and wires.

Tuner Pack Removal

Procedure for removing the tuner pack, including its connection and mounting screws.

Tape Mechanism Deck and MIC Board Removal

Steps to remove the tape mechanism deck and the associated MIC board.

CD-SW Board and Panel Board Removal

Instructions for detaching the CD-SW board and the panel board.

Function Board and Jog Board Removal

Procedure for removing the function board and the jog board assembly.

CD Mechanism Deck Removal

Steps to detach the CD mechanism deck from the main unit.

Back Panel Removal

Instructions for removing the back panel, including connectors and wires.

Primary Board and Effector Board Removal

Procedure for removing the primary board and the effector board.

Power Amp PC Board Assy and Main Board Removal

Steps to detach the power amplifier PC board assembly and the main board.

Surround Board and PA Board Removal

Instructions for removing the surround board and the PA board.

Power Transformer (T1200) Removal

Procedure for removing the power transformer (T1200).

Driver Board and SW Board Removal

Steps to detach the driver board and the SW board.

CD Board Removal

Instructions for removing the CD board, including optical pick-up and coil springs.

Sensor Board Removal

Procedure for removing the sensor board, including tray, belt, and pulley.

Motor (TB) Board Removal

Steps to detach the motor (TB) board and associated components.

Motor (LD) Board Removal

Instructions for removing the motor (LD) board and loading motor assembly.

Test Modes and Procedures

GC Test Mode Operations

Checking fluorescent indicator tube, LEDs, jog dials, and software versions.

MC Test Mode Functions

Checking amplifier, tuner, and tape operations; includes GEQ, volume, and tape recording checks.

Cold Reset Procedure

Clears all data including preset data in RAM to initial conditions.

VACS ON/OFF Mode

Switching the VACS (Variable Attenuation Control System) ON and OFF.

Tuner Step Change

Toggling AM channel step interval between 9 kHz and 10 kHz.

CD Service Mode

Allows free movement of the CD sled motor for cleaning the optical pick-up.

CD Aging Mode

Operation check mode for the CD section to verify aging operations.

CD Error Code Display Mode

Displays error codes related to mechanical and disc errors.

CD Repeat 5 Limit Off Mode

Enables CD playback to repeat for limitless times.

CD Ship Mode (with Memory Clear)

Moves optical pick-up for vibration durability and clears RAM data.

CD Ship Mode (without Memory Clear)

Moves optical pick-up for vibration durability without clearing RAM data.

CD Power Manage Mode

Switches power supply to the BU during TUNER function ON or OFF.

CD Tray Lock Mode

Activates mode to prevent disc trays from opening via buttons.

Video/MD Switching

Mode to switch between VIDEO and MD functions.

TCM Offline Mode

Prevents automatic power-off when TCM is not connected.

Mechanical and Electrical Adjustments

Mechanical Adjustments Precautions

Precautions for cleaning, demagnetizing, and using correct tools for adjustments.

Torque Measurement Specifications

Table detailing torque meter readings for FWD and FF/REW modes.

Electrical Adjustments Overview

General precautions and settings for performing electrical adjustments.

Record/Playback Head Azimuth Adjustment

Procedure for adjusting the azimuth of record/playback heads for both decks.

CD Section Adjustments (S-curve Check)

Procedure for checking the CD S-curve waveform for symmetry and peak level.

RFAC Level Check

Procedure to check RFAC signal level and waveform clarity.

E-F Balance Check

Procedure to check E-F balance by confirming DC voltage levels in traverse waveform.

Diagrams and Circuit Board Locations

Schematic Diagram Notes

Notes on component identification, voltage measurements, and signal paths.

Printed Wiring Board Notes

Information on component side, pattern side, and unleaded solder usage.

Circuit Boards Location

Diagram showing the physical layout and names of all circuit boards within the unit.

Block Diagrams Overview

Collection of block diagrams for CD, Tape/Tuner, Main, Amp, and Display/Power sections.

Printed Wiring Board Layouts

Layout diagrams for various boards including CD, CD Mechanism, MAIN, PANEL, etc.

Schematic Diagrams

Detailed schematic diagrams for CD, CD Mechanism, MAIN, PANEL, PA, SURROUND, EFFECTOR, and POWER sections.

IC Pin Function Descriptions

Detailed pin descriptions for key integrated circuits used in the unit.

Exploded Views of Unit Sections

Case and Back Panel Assembly

Exploded view detailing parts for the case and back panel.

Front Panel Assembly - Part 1

Exploded view showing components of the front panel assembly.

Front Panel Assembly - Part 2

Exploded view detailing buttons, indicators, and escutcheons for the front panel.

Chassis Section Components

Exploded view illustrating the main chassis components and their arrangement.

CD Mechanism Deck - Part 1

Exploded view of the CD mechanism deck, showing motors, gears, and boards.

CD Mechanism Deck - Part 2

Exploded view of the CD mechanism deck, detailing parts like magnets, pulleys, and insulators.

Electrical Parts Lists

Capacitor Listings

Comprehensive list of capacitors used in the CD board with part numbers and specifications.

Resistor Listings

Comprehensive list of resistors used in the CD board with part numbers and specifications.

Component Lists by Board/Type

Parts lists categorized by board (CD-SW, DRIVER, EFFECTOR, etc.) and component type (IC, Transistor, Diode).

Component Lists for Main and MIC Boards

Parts lists for MAIN and MIC boards, including connectors, diodes, ICs, and resistors.

Component Lists for PA and PANEL Boards

Parts lists for PA and PANEL boards, detailing resistors, transistors, and capacitors.

Component Lists for PRIMARY and SW Boards

Parts lists for PRIMARY and SW boards, including capacitors, connectors, and diodes.

Component Lists for SENSOR and SURROUND Boards

Parts lists for SENSOR and SURROUND boards, including ICs, transistors, resistors, and capacitors.

Component Lists for TRANS Board and Miscellaneous

Parts lists for TRANS board, switches, connectors, diodes, transistors, resistors, and miscellaneous items.

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