Onkyo TX 903 Owners Manual

Page 2

0 Congratulations on your purchase of the ONKYO TX-903, 7X-901 Tuner-Amplifier,

0 Please read th/s manual thoroughly before making connections and turning power on

0 Fol/owrng the instructions in this manual will enable you to obtain optimum performance
and listening enjoyment from your new TX «903, TX -901. 0 Please retain this manual for future
reference,

C ON TEN T5

Features .................... ,, 1
Important safeguards 2
Precautions .................. 2
Before using this unit. 3
System connections ............... 4
Control positions and names 7
Operations .................. 9
Troubleshooting guide 13
Specifications ................ 14

Features

0 Plenty of Clean Power
TX-903: 60 watts of continuous power per channel into 8 ohms With no more than 0.2% total harmonic distortion (2 x100 watts dynamic
power at 4 ohms)
TXA901: 45 watts of continuous power per channel into 8 ohms With no more than 0.3% total harmomc distortion (2 x 80 watts dynamic
power at 4 ohms)

Discrete Output Stage

Instead of the less expensive IC power amp CllCUlUY used In some receivers, the TX-903 and TX-901 feature output stages composed

of discrete components Not just an off w the W shelf chip, the circuit design of the output stage Is optimized for the specific reqUIrernents

of the tuner amplifier to assure that theTXeEIOB and TXVBOI can not only deliver sufficient power, but also safely drive even low impedance

loads.

40-Station FM/AM Random Preset Tuning

0 Classified Memory Preset
The memory presets are divided Into six classes, A through F, which can be used for different types of programs (rock, news, Classical.
etc ), Or each member ol the family can have a separate class (class A for Dad, class B for Mom, class D for Junior). Any preset station
can be assigned to any class

0 Direct Access Tuning Using Numeric Buttons
Instead of using the UP or DOWN tuning buttons to scan through the available frequencies until the desired station is located, Direct
Access Tuning lets you punch In the broadcast frequency directly using the numeric buttons For example, 103 5 MHz can be selected
by Simply pressing the 1, 0, 3 and 5 buttons

0 APR (Automatic Precision Reception) System

Onkyos exCIUSIve APR system lets every FM broadcast sound Its best. Its built - In electronic brain monitors the signal and selects the

optimum settings for RF Local/DX and Stereo Auto/ Mono. The APR system settings are shown by indicators on the front panel.

Six Program Inputs Including Video Sound with Logic Controlled Feather-Touch Keys

Two Pairs of Speaker Output Terminals

Loudness Control

RI Compatible Wireless Remote Control Included (TX-903 only)

CAUTION

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). N0 USERSERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL,"

CAUTION

RISK OF ELECTRIC SHOCK
DO NOT OPEN

I The lightning flash With arrowhead symbol, Within
an equilateral triangle, Is Intended to alert the user
to the presence of uninsulated ~dangerous voltage
Within the product's enclosure that may be of sulli-
crent magnitude to constitute a risk of electric shock
to persons.

0 The exclamation point within an equilateral triangle
IS Intended to alert the user to the presence of im-
portant operating and maintenance (servicing) in-
structlons in the literature accompanying the appllr
ance

"WARNING"
"TO REDUCE THE RISK OF FIRE 0R ELECTRIC SHOCK, Do NOT
EXPOSE THIS APPLIANCE T0 RAIN OR MOISTURE"

O For models having power cords with a polarized plug.
CAUTION: TO PREVENT ELECTRIC SHOCK DO NOT USE
THIS (POLARIZED) PLUG WITH AN EXTENSION CORD, REV
CEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE
FULLY INSERTED TO PREVENT BLADE EXPOSURE.

0 Sur les modeles dont Ia fiche est polarisée.
ATTENTION: POUR PREVENIR LEs CHocsELECTRIOUEs
NE PAs UTILISER CETI'E FlCHE POLARISEE AVEC L'iN PR0-
LONGATEUR, UNE PRISE DE COURANT 0U UNE AUTRE SORTIE
DE COURANT, SAUF SI LEs LAMEs PEUVENT ETRE INSEREEs
A FOND SANS EN LAISSER AUCUNE PAHTIE A DECOUVERT.

Page 8

NOTE:

Control positions and names

- O The features, specifications, and display for the TX<903 and

TX»901 are slightly diflerent. Read this manual carefully to
operate the model you have purchased correctly ,

For more information about buttons or controls, turn to the page number listed in the [ 1.

Tuning Selector Button: ( 1 DOWN. UP > )[10] - F7 FM Muting/Mode Button (MUTE/MODE) [10]

Speaker Selector Switches (SPEAKERS) [9] 0'be BUHOHS (1 ~9. °)[1°]

r Stand-By Indicator (TX-903 only) / Loudness Control Switch
When this Indicator is lit, the power (LOUDNESSHSI
can be turned on by the remote
control transmitter. Volume Control Knob
VOLUME 9
Heldphone Jack Remote Control Sensor [3] ( )I ]
(PHONES) [9] (TX-903 only)
Display
(-
LI-1_-15
K ©
(E
F it II
I__] l
MAIN POWER SWiCh [5] Memory Button (MEMORY)[11] Balance Control Knob
(BALANCE) [9]
\- SYSTEM POWER Button Classified Memory Buttons -/ ¥
(TX»903 only) [9] (CLASS A ~ CLASS F) [11] Treble Control Knob
(TREBLE) [9]
Direct Tuning Button
(DIRECT TUNING) [10] L- Bass Control Knob
(BASS) [9]

Input Selector Buttons (TAPE-2 MONITOR,
TAPE-VIDEO. AM, FM, PHONO, co) [9]

FM Stereo Indicator fl /- Tape-2 Monitor Indicator
Tuned Indicators Memory Indicator
I l '
FM Muting On/Otf indicator W {- S 99 "dcam
| I I

r-a Mswm stzsr

w W muse W" 3
m m lliIHiViIiHH Mowo AUDIO MUVE

qr svwso
iMou: Moor

- Audio Muting Indicator

APR system indicators -im_ III C] III /\_-I I:I (_-j [:1 (TX-903 07W)
-Qm/_l /_/ LI" /_\l LUZ}: (AI-i3:
Input Selector/Frequeflcv Display L Preset Station

Classified Memory Display