SERVICE MANUAL
Published by Sony Techno Create Corporation
Sony Corporation
Audio Business Group
SPECIFICATIONS
FM/AM COMPACT DISC PLAYER
CDX-GT870US/GT878US
9-887-933-01
2007L04-1
©
2007.12
AEP Model
UK Model
CDX-GT828U
E Model
CDX-GT870US/GT878US
Ver. 1.0 2007.12
Model Name Using Similar Mechanism
CDX-GT620U/670U/
GT670US
CD Drive Mechanism Type MG-101I-188//Q
Optical Pick-up Name DAX-25A
• The tuner and CD sections have no adjustments.
CDX-GT828U/GT870US/
GT878US
Photo: CDX-GT828U
FM/MW/LW COMPACT DISC PLAYER
CDX-GT828U
CD Player section
Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and fl utter: Below measurable limit
Tuner section
FM
Tuning range:
CDX-GT828U:
87.5 – 108.0 MHz
CDX-GT870US/GT878US:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval:
CDX-GT870US/GT878US:
50 kHz/200 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio:
67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz:
0.5 % (stereo), 0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
MW/LW
CDX-GT828U:
Tuning range:
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency:
10.7 MHz/450 kHz
Sensitivity:
MW: 30 μV, LW: 40 μV
AM
CDX-GT870US/GT878US:
Tuning range:
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning interval:
9 kHz/10 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: 30 μV
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