Sony HCD-GTX77 Service Manual

Sony HCD-GTX77 Service Manual

Cd deck receiver
Table of Contents

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HCD-GTX66/GTX77
QQ
3 7 63 1515 0
SERVICE MANUAL
Ver. 1.0 2007. 07
• HCD-GTX66/GTX77 are the tuner,
deck, CD and amplifier section in
MHC-GTX66/GTX77.
TE
L 13942296513
Amplifier section
Brazil model only
The following are measured at
AC 127 V or 220 V, 50/60 Hz
Front speaker
RMS output power:
HCD-GTX77: 300 W + 300 W
(at 4 Ω, 1 kHz, 10% THD)
HCD-GTX66: 280 W + 280 W
(at 4 Ω, 1 kHz, 10% THD)
Other models
The following are measured at
Mexican model:
HCD-GTX77: AC 127 V, 60 Hz
Other models:
AC 120, 220, 240 V, 50/60 Hz
Front speaker
Power Output (rated):
HCD-GTX77: 225 W + 225 W
(at 4 Ω, 1 kHz, 1% THD)
HCD-GTX66: 210 W + 210 W
(at 4 Ω, 1 kHz, 1% THD)
RMS output power (reference):
HCD-GTX77: 380 W + 380 W
(per channel at 4 Ω, 1 kHz,
10% THD)
HCD-GTX66: 340 W + 340 W
(per channel at 4 Ω, 1 kHz,
10% THD)
www
.
Sony Corporation
9-887-780-01
2007G04-1
Personal Audio Division
© 2007. 07
Published by Sony Techno Create Corporation
http://www.xiaoyu163.com
CD
Section
Tape Deck
Section
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2 9
8
Model Name Using Similar Mechanism
CD Mechanism Type
Optical Pick-up Name
Model Name Using Similar Machanism
Q Q
3
6 7
1 3
1 5
SPECIFICATIONS
Inputs
VIDEO (AUDIO IN) L/R:
AUDIO (AUDIO IN) L/R:
MIC:
(USB) port:
Outputs
PHONES:
Disc player section
System
Laser
Laser Output
co
.
9 4
2 8
E Model
HCD-GTX88
CDM74KF-K6BD91UR-WOD//M
KSM-213DCP/C2NP
HCD-GTX88
0 5
8
2 9
9 4
2 8
Voltage 250 mV,
impedance 47 kilohms
Voltage 450 mV,
impedance 47 kilohms
Sensitivity 1 mV,
impedance 10 kilohms
Type A
accepts headphones of
8 ohms or more
Compact disc and digital
audio system
Semiconductor laser
(λ=770 – 810 nm)
Emission duration:
continuous
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.
– Continued on next page –
m
CD DECK RECEIVER
9 9
9 9
1

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Summarization of Contents

Service Manual Overview
Product Specifications
Detailed technical data including inputs, outputs, and component specifications.
Amplifier Section Specifications
Specifies output power measurements for front speakers under different conditions and models.
General System Specifications
Tape Deck Specifications
Details recording system, frequency response, and wave length.
Tuner and USB Specifications
Lists tuning ranges, frequencies, and USB supported formats and current.
Component Handling and Repair Notes
Unleaded Solder Information
Details characteristics of unleaded solder, melting point, viscosity, and handling.
Laser Safety and Handling
Handling Precautions for Optical Pick-up
Warns about electrostatic discharge and handling of flexible boards.
General Information and Controls
Unit Controls Overview
Explains operations using unit buttons, mentioning remote compatibility and views of front and top.
Component Identification
Remote Control Overview
Lists and explains the functions of the remote control buttons.
Disassembly Procedures
Disassembly: Case (Top)
Details steps and parts for removing the top case.
Disassembly: Loading Panel
Outlines removing the loading panel, including pulley and disc tray steps.
Disassembly: Tuner Pack
Disassembly: CD Block Section
Details removing the CD block section, listing wires, screws, and lugs.
Disassembly: Front Panel Section
Disassembly: Tape Deck, Mic, USB Boards
Details removing tape mechanism, mic, and USB connector boards, listing screws and brackets.
Disassembly: Panel, Function, Jog Boards
Disassembly: CD-SW Board
Details removing the CD-SW board, including screws and escutcheon.
Disassembly: Cover (CDM)
Disassembly: Back Panel Section
Outlines removing the back panel section, specifying wires and screws.
Disassembly: Power Board Section
Disassembly: Main Board
Explains removing the main board, specifying connectors and screws.
Disassembly: Subwoofer and Power Boards
Disassembly: Power Transformer (T1200)
Outlines removing the power transformer, specifying screws and board connections.
Disassembly: BD91 Board
Disassembly: Driver, SW, USB Boards
Explains removing driver, SW, and USB boards, listing screws and wires.
Disassembly: Optical Pick-Up
Disassembly: Sensor Board
Outlines removing the sensor board, listing parts like tray, floating screws, sensors, belt, and pulley.
Disassembly: Motor (TB) Board
Disassembly: Motor (LD) Board
Explains removing the motor (LD) board, including stoppers, loading motor assembly, screws, and belt.
Test Modes and Procedures
GC Test Mode Operation
Explains checking LEDs, buttons, knobs, and software versions using GC Test Mode.
MC Test Mode Operation
Covers checking amp, tuner, and tape operations, including EQ adjustments and tape function.
Cold Reset Functionality
Describes the cold reset procedure to clear data and restore initial conditions.
VACS ON/OFF Mode
Explains switching the VACS system on and off.
Tuner Step Change Mode
Details toggling AM channel steps between 9 and 10 kHz.
CD Service Mode Operation
CD Aging Mode Operation
Describes mode for CD section operation check, including error handling and repeated aging.
Special Operation Modes
CD Tray Lock Mode
Locks the disc tray, preventing opening when specific buttons are pressed.
TCM Offline Mode
Prevents system shutdown when TCM is not connected, allowing measurements.
VACS Display Mode
Used to check VACS level, displaying various VACS-related indicators.
CD Repeat 5 Limit Off Mode
CD Ship Mode (Memory Clear)
Moves pick-up for vibration durability and clears RAM data, used for customer returns.
CD Ship Mode (No Memory Clear)
Moves pick-up for vibration durability without clearing RAM data, used for customer returns.
Mechanical Adjustments and Precautions
Adjustment Precautions
Lists precautions for adjustments: cleaning, demagnetizing, and using correct tools.
Electrical Adjustments
FM Tune Level Check
Details checking FM tune level using a signal generator and confirming the 'TUNED' indicator.
Head Azimuth Adjustment Procedure
Explains adjusting head azimuth to match output peaks for L-CH and R-CH.
Test Disc List for CD Section
S-Curve Check Procedure
Details checking S-curve waveform using oscilloscope and test discs.
Circuit Diagrams
Block Diagram: RF/Servo Section
Illustrates block diagram for RF and Servo sections, including signal paths.
Printed Wiring and Schematic Diagram Notes
Unleaded Solder Information
Details characteristics and handling of unleaded solder, including melting point and viscosity.
Circuit Waveform Analysis
BD91 Board Waveforms (CD Play)
Shows waveforms for IC101 on BD91 board related to CD playback.
Main Board Waveforms
Displays waveforms for IC401 on main board, related to IN/OUT signals.
USB and Panel Board Waveforms
Shows waveforms for IC901 (USB) and IC900 (Panel).
Schematic Diagrams: Main Section
Main Board Schematic (1/4)
First part of main board schematic, illustrating IC401 connections and related circuitry.
Main Board Schematic (2/4)
Main Board Schematic (3/4)
Third part (3/4) of main board schematic, detailing IC101 and associated components.
USB Connector Section Diagrams
Schematic Diagram: USB Connector Section
Presents schematic diagram for USB connector section, showing ICs and connections.
IC Block Diagrams
IC401 Block Diagram
Block diagram for IC401, a motor driver IC on the BD91 board.
IC402 Block Diagram
Block diagram for IC402, a decoder IC on the main board.
IC101 Block Diagram
Block diagram for IC101, a digital signal processor on the main board.
IC563/564 Block Diagram
IC566/567 Block Diagram
Block diagram for IC566 and IC567, analog switches.
IC568 Block Diagram
Block diagram for IC568, a data selector IC.
IC301 Block Diagram
IC550 Block Diagram
Block diagram for IC550, an overload detector.
IC565/570 Block Diagram
Block diagram for IC565 and IC570, voltage regulators.
IC915 Block Diagram
IC1501 Block Diagram
Block diagram for IC1501, a digital delay IC.
IC1503 Block Diagram
Block diagram for IC1503, a multiplexer IC.
IC1100 Block Diagram
IC902 Block Diagram
Block diagram for IC902, a spectrum analyzer IC.
IC Pin Descriptions
IC101 Pin Descriptions
Detailed pin descriptions for IC101, covering its multiple functions.
IC Pin Descriptions: USB Controller
IC901 Pin Descriptions (Continued)
Continues pin descriptions for IC901, covering pins 85 through 100.
Exploded Views
Main Section Exploded View
Provides exploded view of main unit, detailing CD block, chassis, and front panel parts.
Electrical Parts List
Capacitors and Connectors
Lists various ceramic and electrolytic capacitors, along with connector part numbers.
Diodes and Transistors
Lists diodes like MA111-TX and transistors such as 2SA2119K.
Resistors
Lists metal film and carbon resistors with values, tolerance, and wattage.
Resistors (Continued)
Capacitors and Connectors (Continued)
Lists capacitors and connectors for the driver board.

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