Sony HCD-GT111 Service Manual

SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
HCD-GT111/GT222/
GT444/GT555
SPECIFICATIONS
COMPACT DISC DECK RECEIVER
9-889-112-03
2008G05-1
©
2008.07
AEP Model
HCD-GT111/GT222/GT444
UK Model
HCD-GT444
E Model
Russian Model
HCD-GT111/GT222/GT444/GT555
Ver. 1.2 2008.07
• HCD-GT111 is the amplifi er, USB, CD player, tape
deck and tuner section in MHC-GT111/GT111BP.
• HCD-GT222 is the amplifi er, USB, CD player, tape
deck and tuner section in MHC-GT222.
• HCD-GT444 is the amplifi er, USB, CD player, tape
deck and tuner section in MHC-GT444.
• HCD-GT555 is the amplifi er, USB, CD player, tape
deck and tuner section in MHC-GT555.
Photo: HCD-GT555
CD
Section
Model Name Using Similar Mechanism
NEW
Mechanism Type
CDM88A-K6BD93-WOD
Optical Pick-up Block Name
KSM-213DCP
Tape deck
Section
Model Name Using Similar Mechanism
HCD-EC55/EC77
Tape Transport Mechanism Type
TCM-J1 or CS-21SC-900TP
Amplifier section
HCD-GT555
The following are measured at AC 120, 127,
220, 230 – 240 V 50/60 Hz
Front speaker
Power output (rated): 110 W + 110 W
(at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
200W + 200 W (per channel at 6 Ω,
1kHz,10%THD)
Subwoofer
RMS output power (reference): 190 W
(at 6 Ω,100Hz,10%THD)
HCD-GT444
The following are measured at AC 120, 127,
220, 230 – 240 V 50/60 Hz
Front speaker
Power output (rated): 90 W + 90 W
(at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
150 W + 150 W (per channel at 6 Ω,
1 kHz, 10% THD)
Subwoofer
RMS output power (reference): 150 W
(at 6 Ω, 100 Hz, 10% THD)
HCD-GT222
The following are measured at AC 120, 127,
220, 230 – 240V 50/60 Hz
Power output (rated): 110 W + 110 W
(at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
200 W + 200 W (per channel at 6 Ω,
1 kHz, 10% THD)
HCD-GT111
The following are measured at AC 120, 127,
220, 230 – 240V 50/60 Hz
Power output (rated): 60 W + 60 W
(at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
100 W + 100 W (per channel at 6 Ω,
1 kHz, 10% THD)
Inputs
AUDIO INPUT L/R : voltage
250 mV, impedance 47 kilohms
MIC: sensitivity 1 mV, impedance
10 kilohms
(USB) port: Type A
Outputs
PHONES: accepts headphones of 8 Ω or
more
FRONT SPEAKER: accepts impedance of
6 Ω
SUBWOOFER (HCD-GT555/
HCD-GT444 only): accepts
impedance of 6 Ω
USB section
Supported bit rate
MP3 (MPEG 1 Audio Layer-3):
32 – 320 kbps, VBR
WMA: 32 – 192 kbps, VBR
AAC: 48 – 320 kbps
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3):
32/44.1/48 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz
Transfer speed
Full-Speed
Supported USB device
Mass Storage Class
Maximum current
500 mA
CD player section
System: Compact disc and digital audio
system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6 μW
* This output is the value measurement
at a distance of 200 mm from the
objective lens surface on the Optical
Pick-up Block with 7 mm aperture.
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 88 dB
Tape deck section
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range:
87.5 – 108.0 MHz (50 kHz step)
Antenna: FM lead antenna
Antenna terminals: 75 ohms unbalanced
Intermediate frequency: 10.7 MHz
AM tuner section
Tuning range
Pan American and Oceanian models:
530 – 1,710 kHz (with 10 kHz tuning
interval)
531 – 1,710 kHz (with 9 kHz tuning
interval)
European and Russian models:
531 – 1,602 kHz (with 9 kHz tuning
interval)
Other models:
530 – 1,610 kHz (with 10 kHz tuning
interval)
531 – 1,602 kHz (with 9 kHz tuning
interval)
Antenna: AM loop antenna, external antenna
terminal
Intermediate frequency: 450 kHz
Mexican model: AC 127 V, 60 Hz
Argentine model: AC 220 V, 50/60 Hz
Other models: AC 120, 220 or 230 –
240 V, 50/60 Hz, Adjustable with
voltage selector
Power consumption
HCD-GT555: 216 W
HCD-GT444: 286 W
HCD-GT222: 163 W
HCD-GT111: 150 W
Dimensions (w/h/d) (excl. speakers)
Approx. 231 × 361 × 437.5 mm
(9 1/8 × 14 1/4 × 17 1/4 inch)
Mass (excl. speakers)
HCD-GT555/GT444/GT222
(Except European model),
HCD-ZT4: 10.0 kg (22 lb 1 oz)
HCD-GT222 (European model):
9.6 kg
HCD-GT111: 8.0 kg
Design and specifications are subject to
change without notice.
General
Power requirements
European and Russian models:
AC 230 V, 50/60 Hz

Sony HCD-GT111 Specifications

General

Power Output	100 W
Speaker Configuration	2.0
Speakers	2
CD Player	Yes
Number of Discs	1
FM/AM Tuner	Yes
Tuner Bands	FM, AM
Bluetooth	No
USB Playback	Yes
Audio Line In	Yes
Weight (Speaker)	1.5 kg
Playable File Types	MP3
Dimensions (Speaker)	150 x 230 x 150 mm
Type	Mini Hi-Fi System

Summary

SERVICING NOTES

Handling Optical Pick-up and Laser Diode

Precautions for electrostatic discharge and handling the optical pick-up block and laser diode.

Unleaded Solder and Disc Tray Lock Release

Characteristics of unleaded solder and procedure to release the disc tray lock.

Component Removal Procedures

Instructions for removing the tray and volume knob components.

Safety Precautions and Service Positions

Capacitor discharge for safety and service positions for boards.

GENERAL

Guide to Parts and Controls

Explanation of front and top view controls and their functions.

DISASSEMBLY

Disassembly Flow

Step-by-step procedure for disassembling the unit.

External Case Parts Removal

Instructions for removing side, top, and back panel assemblies.

Tape Mechanism Deck Removal

Steps to remove the tape mechanism deck from the unit.

Front Panel Block Removal

Instructions for removing the front panel block assembly.

Main Board Removal

Steps for removing the main board assembly.

CD Mechanism Block Removal

Procedure for removing the CD mechanism block assembly.

Belt Replacement

Procedure for replacing the belt (DLM3A) in the mechanism.

TEST MODE

Panel Test Mode

Checking LEDs, keys, model, and software versions.

Common Test Mode

Checking amplifier and tape sections in common test mode.

Cold Reset Procedure

Clearing all data to initial conditions for customer return.

VACS ON/OFF Mode

Switching the Variable Attenuation Control System ON/OFF.

Other Test Modes

Procedures for tuner step change, CD service, aging, error code, repeats, and ship modes.

MECHANICAL ADJUSTMENTS

Precautions

General precautions before performing mechanical adjustments.

Torque Measurement

Specifications and procedures for torque measurement.

Tape Tension Measurement

Specifications and procedures for tape tension measurement.

ELECTRICAL ADJUSTMENTS

DECK SECTION Adjustments

Adjusting head azimuth for optimal L-CH and R-CH output match.

CD SECTION Adjustments

Notes on CD block adjustments, test discs, and lens cleaning.

RF Level and FM Tune Level Checks

Confirming RF signal clarity and FM tune level.

DIAGRAMS

Block Diagram - CD Servo, USB Section

Visual representation of CD servo and USB circuit interconnections.

Block Diagram - MAIN Section

Visual representation of the MAIN section circuit interconnections.

Schematic Diagram - CD Board

Detailed circuit diagram for the CD board.

Printed Wiring Board - MAIN Board

Component layout and connections for the MAIN board.

Schematic Diagram - MAIN Board

Detailed circuit diagram for the MAIN board.

Schematic Diagram - POWERAMP Board

Detailed circuit diagram for the POWERAMP board.

Schematic Diagram - DISPLAY Board

Detailed circuit diagram for the DISPLAY board.

Schematic Diagram - TRANS1 Board

Detailed circuit diagram for the TRANS1 board.

EXPLODED VIEWS

8-1. Case Section

Exploded view of the unit's case components.

8-2. Loading Panel Section

Exploded view of the loading panel components.

8-4. Front Panel Section

Exploded view of the front panel components.

8-6. Top Panel Section

Exploded view of the top panel components.

8-8. Main Board Section

Exploded view of the MAIN board components.

8-10. CD Mechanism Section

Exploded view of the CD mechanism components.

ELECTRICAL PARTS LIST

General Notes on Parts List

General information regarding parts list standardization and notations.

CD Board Parts List

List of electrical components for the CD board.

Display Board Parts List

List of electrical components for the DISPLAY board.

Poweramp Board Parts List

List of electrical components for the POWERAMP board.

TRANS1 Board Parts List

List of electrical components for the TRANS1 board.

USB Board Parts List

List of electrical components for the USB board.