Pioneer sx 2500 owners manual

Page 1

INSTALLATION, OPERATION
AND SERVICE MANUAL

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

PIONEERI

Page 2

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

If the AUTO TUNING" SWITCHES are not in use, tuning is
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 lC's to provide
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.

REMOTE CONTROL

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 EQUALIZER CIRCUIT

This is a professional circuit that provides higher dynamic range and
lower distortion.

HIGHLY VERSATILE

The SX-2500 incorporates an 8-pin socket for a step-up transformer
unit Pioneer PP-402 for a moving coil cartridge; 3 switch for separate
use of pre- and main amplifiers; outputs for 2 stereo systems; a
PHONO l and PHONO 2 button, and connections for 2 tape
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.

th"the remote control attachment you can 0 erate the tuning and

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.,.W 44

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PIONEER

LINE VOLTAGE SELECTION AND FUSE

SWITCHING LINE VOLTAGE SETTING AND FUSE

To remove the fuse, turn the fusecap located on the line
voltage selector switch in the direction indicated by the
arrow. Then remove the fuse plug from the unit.

Put the fuse plug back so that the proper line voltage
marking can be seen through the cut on the edge of the
plug. Whenever the position of the selector switch is
changed, check the rating of the fuse.

A 1.5-ampere is to -be used for either 220V or 240V
operation and a 3-ampere fuse for 110V, 120V or 130V
operation.

If the rating of the fuse is correct, replace cap.

FUSE REPLACEMENT

If the fuse blows, remove the fuse cap and replace the fuse
with a new one.

STEREO SYSTEM

The SX<2500 is general»purp0se stereo amplifier. Connect it
to the speaker systems (two or four), turntable, tape
recorder, etc., which are separately available.

INSTALLATION

When installing your stereo system, check the following

points.

0 The area should be well-ventilated, and free from damp-
ness and dust.

I The units should not be exposed to direct sunlight.

O The units should not be placed near radiators or other
heating units.

0 The place should be substantial and roomy enough for the
installation, when installing the unit on a shelf.

FUSE PLUG

fife
it

FUSE

FUSE CAP

COIN
Take off the fuse cap by turning it with a coin,

in the direction indicated by the arrow.

Fig. 1

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....-....

Fig. 2