SERVICE MANUAL
Sony Corporation
Audio & Video Business Group
Published by Sony EMCS (Malaysia) PG Tec
HCD-GTR33/GTR55/GTR77
SPECIFICATIONS
9-890-541-01
2010C08-1
©
2010.03
E Model
• HCD-GTR33 is the ampli
fi
er, USB, CD player, tuner and
tape deck (only E4 model) section in MHC-GTR33.
• HCD-GTR55 is the ampli
fi
er, USB, CD player, tuner and
tape deck (only E4 model) section in MHC-GTR55.
• HCD-GTR77 is the ampli
fi
er, USB, CD player, tuner and
tape deck (only E4 model) section in MHC-GTR77.
Photo: HCD-GTR77 (E4 Model)
“WALKMAN” and “WALKMAN” logo are registered
trademarks of Sony Corporation.
MICROVAULT is a trademark of Sony Corporation.
MPEG Layer-3 audio coding technology and patents licensed
from Fraunhofer IIS and Thomson.
Windows Media is a registered trademark of Microsoft
Corporation in the United States and/or other countries.
“Memory Stick” is a trademark of Sony Corporation.
CD Section
Model Name Using Similar Mechanism
HCD-GTZ4/GTZ4i/GTZ5
CD Mechanism Type
CDM88BL-DVBU101
Optical Pick-up Name
KHM-313CAB/C2NP
Tape Section
(Only for E4 model)
Model Name Using Similar Mechanism
HCD-GT111/GT222/GT444/GT555
Tape mechanism Type
CS-21SC-900TP
• Abbreviation
E4 : African model
COMPACT DISC DECK RECEIVER
Ampli
fi
er section
MHC-GTR77
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120 V, 220 V, 240 V, 50/60 Hz
Front/Satellite Speaker
Power Output (rated):
120 W + 120 W (at 6
Ω
, 1 kHz, 1% THD)
Front Speaker
RMS output power (reference):
225 W + 225 W (per channel at 8
Ω
, 1 kHz)
Satellite Speaker
RMS output power (reference):
100 W + 100 W (per channel at 24
Ω
,
1
kHz)
Subwoofer
RMS output power (reference):
130 W + 130 W (12
Ω
, 100 Hz)
MHC-GTR55
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120 V, 220 V, 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):
240 W + 240 W (per channel at 6
Ω
, 1 kHz)
Subwoofer
RMS output power (reference):
240
W
(6
Ω
, 100 Hz)
MHC-GTR33
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120 V, 220 V, 240 V, 50/60 Hz
Front Speaker
Power Output (rated):
75 W + 75 W (at 6
Ω
, 1 kHz, 1% THD)
RMS output power (reference):
165 W + 165 W (per channel at 6
Ω
, 1 kHz)
Subwoofer
RMS output power (reference):
160
W
(6
Ω
, 100 Hz)
Inputs
PC (AUDIO IN) L/R
Voltage 700 mV, impedance 47 kilohms
MIC
Sensitivity 1 mV, impedance 10 kilohms
(USB) port: Type A
Outputs
PHONES
Accepts headphones of 8
Ω
or more
USB section
Supported bit rate
MP3 (MPEG 1 Audio Layer-3):
32 kbps – 320 kbps, VBR
WMA: 48 kbps – 192 kbps
AAC: 48 kbps – 320 kbps
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3):
32 kHz/44.1 kHz/48 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz
Transfer speed
Full-Speed
Supported USB device
Mass Storage Class
Maximum current
500
mA
Disc player section
System
Compact disc and digital audio system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6
μ
W
* 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
(For African model only)
Recording system
4-track 2 channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North
American
models:
87.5 MHz – 108.0 MHz (100 kHz step)
Other
models:
87.5 MHz – 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 kHz – 1,710 kHz (with 10 kHz tuning
interval)
531 kHz – 1,710 kHz (with 9 kHz tuning
interval)
Other
models:
530 kHz – 1,610 kHz (with 10 kHz tuning
interval)
531 kHz – 1,602 kHz (with 9 kHz tuning
interval)
Antenna
AM loop antenna, external antenna terminal
Intermediate frequency
450
kHz
General
Power requirements
Oceanian model: AC 230 V – 240 V,
50/60 Hz
Mexican model: AC 127 V, 60 Hz
Argentina model: AC 220 V, 50/60 Hz
Other models: AC 120 V, 220 V or
230 V – 240 V, 50/60 Hz, Adjustable with
voltage selector
Power consumption
MHC-GTR77:
260
W
MHC-GTR55: 250 W
MHC-GTR33: 280 W
Dimensions (w/h/d) (excl. speakers)
(Approx.)
231 mm × 361 mm × 429.5 mm
Mass (excl. speakers) (Approx.)
African and Pan Asian models:
HCD-GTR77/HCD-GTR55: 10.7 kg
HCD-GTR33: 10.5 kg
Other
models:
HCD-GTR77/HCD-GTR55: 10.2 kg
HCD-GTR33: 10.0 kg
Design and speci
fi
cations are subject to change
without notice.
