Sony HCD-GNX80 User Manual

HCD-GNX80
E Model
Australian Model
SERVICE MANUAL
MiNi Hi-Fi COMPONENT SYSTEM
Sony Corporation
Audio Group
Published by Sony Engineering Corporation
9-879-460-01
2005B02-1
© 2005.02
SPECIFICATIONS
Ver.1.0 2005. 02
– Continued on next page –
• HCD-GNX80 is the Amplifier,
CD player, tape deck and tuner
section in MHC-GNX80.
Model Name Using Similar Mechanism HCD-GN880
CD CD Mechanism Type CDM74-F1BD81
Section Base Unit Name BU-F1BD81A
Optical Pick-up Name KSM-215DCP/C2NP
TAPE Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type CMAT5Z2
The following are measured at
AC 120, 220, 240 V, 50/60 Hz
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)
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: Use only the supplied speaker
• SS-GNX100
SURROUND SPEAKER: Use only the supplied speaker
• SS-RSX80
SUBWOOFER OUT: Use only the supplied subwoofer
• SS-WG80
Disc player section
System Compact disc and digital audio system
Laser Semiconductor laser (λ=780 nm)
Emission duration: continuous
Laser Output Max. 44.6 µW*
*This output is the value measured at a
distance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Wave length 780 – 790 nm
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
OPTICAL CD DIGITAL OUT
(Square optical connector jack, rear panel)
Wave length 660 nm
Output Level –18 dBm

Sony HCD-GNX80 Specifications

General

Brand	Sony
Model	HCD-GNX80
Category	Stereo System
Language	English

Summary

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

Guidelines for safely handling the optical pick-up block to prevent electrostatic discharge.

NOTES ON LASER DIODE EMISSION CHECK

Instructions for safely checking the laser diode emission to avoid eye damage.

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

Procedure to check the S-curve waveform for laser diode and focus search operation.

GENERAL

Locating the Controls

Identification and location of buttons and controls on the main unit and front panel.

DISASSEMBLY

DISASSEMBLY FLOW

Diagram illustrating the sequence of disassembly steps for the set.

TEST MODE

GC TEST MODE

Mode for checking fluorescent indicator tube, LEDs, keys, and specific levels.

MC TEST MODE

Mode for checking operations of Amplifier, Tuner, and Tape sections.

MECHANICAL ADJUSTMENTS

Torque Measurement

Table detailing torque specifications for various mechanical adjustments.

ELECTRICAL ADJUSTMENTS

RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT

Procedure for adjusting the record/playback head azimuth for optimal audio output.

S-curve Check

Procedure to check the S-curve waveform for symmetrical output on the CD board.

DIAGRAMS

CIRCUIT BOARD LOCATION

Diagram showing the physical placement of all circuit boards within the unit.

BLOCK DIAGRAM - CD SECTION

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

EXPLODED VIEWS

CASE (TOP), REAR PANEL SECTION

Exploded view showing the assembly of the top case and rear panel components.

ELECTRICAL PARTS LIST

CAPACITORS

List of replacement capacitors with part numbers and specifications.

RESISTORS

List of replacement resistors with part numbers and specifications.