Pioneer sx 2500 service manual

Page 1

INSTALLATION, OPERATION
AND SERVICE MANUAL

Including PARTS LIST, CIRCUIT DIAGRAMS.
TROUBLE SHOOTING AND MOUNTING TEMPLATE.

PIONEEIT

Page 2

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FEATURES

TUNING SECTION

AUTOMATIC TUNING

The AUTO TUNING SWITCHES allow the dial pointer to scan
the dial, stopping and centering on an FM station. To get the next
station, just press the switch and the lit pointer travels to it auto
matically without dialing.

MANUAL TUNING 3
If the AUTO TUNING" SWITCHES are not in use, tuning is I
manual. The 2 tuning meters make this quick and accurate

FM CIRCUITRY

The FRONT END employs FET and two-stage radio frequency

amplifier, for higher signal-to-noise ratio.

The IF STAGE includes a crystal filter and 4 IC's to provide 3
excellent limiting, selectivity and capture ratio.

EASY TO USE

The FM MUTING knob provides a variable degree of muting,

depending on the number of stations you want to scan.

The FM STEREO STATION button, when pressed, causes the pointer ,
to pass by stronger FM mono stations and stop only at FM stereo. 1
REMOTE CONTROL

With the remote control attachment you can operate the tuning and
volume controls of the SX-2500 from distances up to 20 feet. This
is one of the most convenient features of this advanced tuner.

AUDIO SECTION

200 WATTS MUSIC POWER

The high power of the SX-2500 will drive even very low-efficiency

speakers with ease, and eliminates clipping. )
STEP TONE CONTROLS

The step" treble and bass knobs let you set ideal tonal balance ;
quickly.
3-STAGE EOUALIZER CIRCUIT f
This is a professional circuit that provides higher dynamic range and
lower distortion.

HIGHLY VERSATILE

The SX-ZSOO incorporates an 8-pin socket for a step-up transformer
unit Pioneer PP-402 for a mbving coil cartridge; 3 switch for separate
use of Dre-and main amplifiers; outputs for 2 stereo systems; a l
PHONO 1 and PHONO 2 button, and connections for 2 tape 1
recorders or decks, permitting even tape-to-tape dubbing.
STYLING

The SX-2500 is a handsome unit, with a smoked glass dial face and
indicators that light up to indicate various function modes and
tuning.