SERVICE MANUAL
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
HCD-GPX33/GPX55/GPX77/
GPX88
SPECIFICATIONS
9-890-622-01
2013C80-1
©
2013.03
Ver. 1.0 2013.03
• HCD-GPX33 is the amplifi er, USB, CD player,
Bluetooth, NFC and tuner section in MHC-GPX33.
• HCD-GPX55 is the amplifi er, USB, CD player,
Bluetooth, NFC and tuner section in MHC-GPX55.
• HCD-GPX77 is the amplifi er, USB, CD player,
Bluetooth, NFC and tuner section in MHC-GPX77.
• HCD-GPX88 is the amplifi er, USB, CD player,
Bluetooth, NFC and tuner section in MHC-GPX88. Photo: HCD-GPX88
“WALKMAN” and “WALKMAN” logo are registered trademarks of Sony Corporation.
MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and Thomson.
Windows Media is either a registered trademark or trademark of Microsoft Corporation in the United States
and/or other countries.
This product is protected by certain intellectual property rights of Microsoft Corporation. Use or distribution
of such technology outside of this product is prohibited without a license from Microsoft or an authorized
Microsoft subsidiary.
The Bluetooth
®
word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use
of such marks by Sony Corporation is under license. Other trademarks and trade names are those of their
respective owners.
The N Mark is a trademark or registered trademark of NFC Forum, Inc. in the United States and in other
countries.
Android is a trademark of Google Inc.
All other trademarks and registered trademarks are of their respective holders. In this manual, ™ and ® marks
are not specified.
CD Section
Model Name Using
Similar Mechanism
NEW
CD Mechanism Type CDM90-DVBU202//M
Optical Pick-up Name CMS-S76RFS7G
COMPACT DISC RECEIVER
US Model
HCD-GPX55/GPX77
E Model
HCD-GPX33/GPX55/GPX77/GPX88
Australian Model
HCD-GPX77
Mexican Model
HCD-GPX33/GPX77/GPX88
Saudi Arabia Model
HCD-GPX33/GPX77
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(USA model only)
With 4 ohm loads, both channels driven, from
120 – 10,000 Hz; rated 130 watts per channel
minimum RMS power, with no more than
0.7% total harmonic distortion from 250
milliwatts to rated output.
Amplifi er section
The following are measured at
USA model:
AC 120 V, 60 Hz
Mexican model:
AC 120 V – 240 V, 60 Hz
Other models:
AC 120 V – 240 V, 50/60 Hz
MHC-GPX88
Front speaker
Power Output (rated):
350 W + 350 W (at 4 ohms, 1 kHz,
1% THD)
RMS output power (reference):
600 W + 600 W (per channel at 4 ohms,
1 kHz)
Subwoofer
RMS output power (reference):
500 W + 500 W (per channel at 5 ohms,
100 Hz)
LBT-GPX77/MHC-GPX77
HIGH speakers
Power Output (rated):
350 W + 350 W (at 4 ohms, 1 kHz,
1% THD)
RMS output power (reference):
600 W + 600 W (per channel at 4 ohms,
1 kHz)
LOW speakers
RMS output power (reference):
300 W + 300 W (8 ohms, 100 Hz)
LBT-GPX55/MHC-GPX55
Front speaker
Power Output (rated):
350 W + 350 W (at 4 ohms, 1 kHz,
1% THD)
RMS output power (reference):
550 W + 550 W (per channel at 4 ohms,
1 kHz)
Subwoofer
RMS output power (reference):
500 W (5 ohms, 100 Hz)
MHC-GPX33
Front speaker
Power Output (rated):
350 W + 350 W (at 4 ohms, 1 kHz,
1% THD)
RMS output power (reference):
600 W + 600 W (per channel at
4 ohms, 1 kHz)
Inputs
TV/DVD/SAT (AUDIO IN) L/R
Voltage 2 V, impedance 47 kilohms
PC/GAME (AUDIO IN) L/R
Voltage 2 V, impedance 47 kilohms
MIC (MHC-GPX88 only)
Sensitivity 1 mV, impedance 10 kilohms
A (USB), B (USB) port: Type A
USB section
Supported bit rate
WMA:
48 kbps – 192 kbps, VBR, CBR
AAC:
48 kbps – 320 kbps, VBR, CBR
Sampling frequencies
WMA: 44.1 kHz
AAC: 44.1 kHz
Supported USB device
Mass Storage Class
Maximum current
500 mA
Disc/USB section
Supported bit rate
MPEG1 Layer-3:
32 kbps – 320 kbps, VBR
MPEG2 Layer-3:
8 kbps – 160 kbps, VBR
MPEG1 Layer-2:
32 kbps – 384 kbps, VBR
Sampling frequencies
MPEG1 Layer-3:
32 kHz/44.1 kHz/48 kHz
MPEG2 Layer-3:
16 kHz/22.05 kHz/24 kHz
MPEG1 Layer-2:
32 kHz/44.1 kHz/48 kHz
Disc player section
System
Compact disc and digital audio system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6 PW
* 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
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
FM lead antenna
AM loop antenna
FM tuner section
Tuning range
USA and Brazilian models:
87.5 MHz – 108.0 MHz
(100 kHz step)
Other models:
87.5 MHz – 108.0 MHz (50 kHz step)
AM tuner section
Tuning range
Pan American and Australia models:
531 kHz – 1,710 kHz (9 kHz step)
530 kHz – 1,710 kHz (10 kHz step)
Saudi Arabian model:
531 kHz – 1,602 kHz (9 kHz step)
Other models:
531 kHz – 1,602 kHz (9 kHz step)
530 kHz – 1,610 kHz (10 kHz step)
Bluetooth section
Communication system
Bluetooth Standard version 3.0 +
EDR (Enhanced Date Rate)
Output
Bluetooth Standard Power Class 2
Maximum communication range
Line of sight approx. 10 m
1)
Frequency band
2.4 GHz band (2.4000 GHz – 2.4835 GHz)
Modulation method
FHSS (Freq Hopping Spread Spectrum)
Compatible Bluetooth profiles
2)
A2DP (Advanced Audio Distribution
Profile)
AVRCP 1.3 (Audio Video Remote
Control Profile)
Supported codecs
SBC (Sub Band Codec)
AAC (Advanced Audio Coding)
1)
The actual range will vary depending on
factors such as obstacles between devices,
magnetic fields around a microwave oven,
static electricity, reception sensitivity,
antenna’s performance, operating system,
software application, etc.
2)
Bluetooth standard profiles indicate the
purpose of Bluetooth communication
between devices.
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