Sony cdx gt 33 u service manual

Page 1

CDX-GT33U

SERVICE MANUAL

Ver. 1.0 2009.03

AE P Model
UK Model
E Model

Photo: E model

- The tuner and CD sections have no adjustments.

CD Player section

Signal-to-noise ratio: 120 dB

Frequency response: 10 2 20,000 Hz
Wow and flutter: Below measurable limit

Tuner section
FM
"Inning range:

87.5 2 108.0 MHz (AEP, UK, IT, RU model)

87.5 2 107.9 MIIL (E, MX model)
Antenna (aerial) terminal:

External antenna (aerial) connector
Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBt'
Selectivity: 75 {IE at 400 kll;
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at l kll;
Frequency response: 20 2 15,000 Hz

Model Name Using Similar Mechanism CDX-GT430U/GT434U

CD Drive Mechanism Type

MG»101Y-188//Q

Optical Pick-up Name

BAX-25A

SPECIFICATIONS

AM (E, MX model)
Tuning range: 530 2 1.710 kll;
Antenna (aerial) terminal:

External antenna (aerial) connector
Intermediate frequency: 25 kHz
Sensitivity: 26 pV

MW/LW (AEP, UK, IT, RU model)
Tuning range:

MW: 531 71,602 kHz

LW: 153 7 279 kHz
Antenna (aerial) terminal:

External antenna (aerial) connector
Intermediate frequency: 25 kl [1
Sensitivity: MW: 26 pV. LW: 45 uV

USB Player section
Interface: USB (Fullnspeed)
Maximum current: SOOmA

Power amplifier section
Outputs: Speaker outputs (sure seal eonueetors)

Speaker impedance: 4 2 8 ohms
Maximum power output: 45 W X 4 (at 4 ohms)

- Continued on next page -

AEP, UK, Italian, Russian model

FM/MW/LW COMPACT DISC PLAYER

E, Mexican model

FM/AM COMPACT DISC PLAYER

9-889-450-01 Sony Corporation
2009004-1 Audio&Video Business Group
© 2009.03

Published by Sony Techno Create Corporation

ONY®

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CDX-GT33U

General
Output:
Power antenna (zterial) relay control terminal
Inputs:
Telephone ATT control terminal
(AEP, UK, IT, RU model)
Remote controller input terminal
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
Tone controls:
Low: :10 dB at 60 H1(XPLOD)
Mi $10 dB at 1 kHz (XPLOD)
High: 110dB at 10 kHz (XPLOD)
Power requirements: 12 V DC car battery
(negative ground (eatth))
Dimensions: Approx. 178 x 50 x 179 mm
(71/3 X 2 X 7 1/8 in.) (w/h/d)
Mounting dimensions: Approx. 182 x 53 x 162 mm
(7 /4 x 2 '/x x 6 '/2 in.) (w/h/d)
Mass: Approx. 1.2 kg (2 lb. 11 oz.)
Supplied accessories:
Card remote commander: RM7X151 (E, MX model)
Parts for installation and connections (1 set)

Design and Specifications are .mlgiecr m Lhange wttham rmriLe.

- Abbreviation
lT : Italian model
RU : Russian model
MX : Mexican model

SAFETY-RELATED COMPONET WARNING!

COMPONENTS IDENTIFIED BY MARK A OR DO'I'I'ED LINE
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

2

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

The laser diode in the optical pick»up block may suffer electrostat-
ic breakvdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.

The flexible board is easily damaged and should be handled with
care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

NOTES ON CHIP COMPONENT REPLACEMENT

- Never reuse a disconnected chip component.

- Notice that the minus side ofa tantalum capacitor may be dam-
aged by heat.

TEST DISCS
Please use the following test discs for the check on the CD section.

YDE5718 (Part No. 3-702-101-01)
PATD~012 (Part No. 4-225-203-01)

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radia»
tion exposure.

If the optical pick-up block is defective, please replace the whole
optical pick-up block.

Never turn the semi-fixed resistor located at the side of optical
pickvup block.

optical pickup

semivfixed resistor