SERVICE MANUAL
Ver. 1.0 2008.12
• The tuner and CD sections have no adjustments.
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-GT930UI: US model:
87.5 – 107.9 MHz
CDX-GT930UI: AEP, UK model:
87.5 – 108.0 MHz
CDX-GT980UI:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
CDX-GT937UI:
FM1/FM2: 87.5 – 108.0 MHz (at 50 kHz step)
FM3: 65 – 74 MHz (at 30 kHz step)
FM tuning interval:
CDX-GT980UI:
50 kHz/200 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
Sony Corporation
9-889-373-01
2008L04-1
Audio&Video Business Group
©
2008.12
Published by Sony Techno Create Corporation
CDX-GT930UI/GT937UI/
(Photo: CDX-GT930UI)
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
AM
CDX-GT930UI: US model/GT980UI:
Tuning range:
CDX-GT930UI: US model:
530 – 1,710 kHz
CDX-GT980UI:
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning interval:
CDX-GT980UI:
9 kHz/10 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Sensitivity: 26 μV
MW/LW
CDX-GT930UI: AEP, UK model/GT937UI:
Tuning range:
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
FM/AM COMPACT DISC PLAYER
FM/MW/LW COMPACT DISC PLAYER
GT980UI
US Model
AEP Model
UK Model
CDX-GT930UI
E Model
CDX-GT980UI
Russian Model
CDX-GT937UI
NEW
MG-101Z-188//Q
DAX-25A
Intermediate frequency: 25 kHz
Sensitivity: MW: 26 μV, LW: 45 μV
USB Player section
Interface: USB (Full-speed)
Maximum current: 500mA
Power amplifi er section
Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output:
52 W × 4 (at 4 ohms)
General
Outputs:
Audio outputs terminal (front/rear)
Subwoofer output terminal (mono)
Power antenna (aerial) relay control terminal
Power amplifi er control terminal
– Continued on next page –
CDX-GT930UI: US model/GT980UI
CDX-GT930UI: AEP, UK model/GT937UI