Onkyo A 905 TX Service Manual

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A-905TX

Ref. No. 3677

ONKYO® SERVICE MANUAL °52°°

INTEGRATED STEREO AMPLIFIER
A-905TX

@951 DIE! m
LEISLIEIEID
[anal-1mm

_ II
Sign;
- - n n E

:IDEIEIEI

omo mmmmmwm

anon
on

Dru-m

HaQ Q Q G <0
I_I I_I

UDT 120V AC, 60Hz
UPT 230-240V AC, SOHZ

SAFETY-RELATED COMPONENT
WARN IN G ! I

COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.

MAKE LEAKAGE-CURRENT 0R RESISTANCE
MEASUREMENTS To DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

ONKYO.

IMAGINATIVE SIGHT & SOUND

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SPECIFICATIONS

Power output
22 watts per channel, min RMS,
at 4 ohms, both channels driven
1 kHz, with no more than 0.5% THD
15 watts per channel, min RMS,
at 8 ohms, both channels driven
1 kHz, with no more than 0.2% THD
2 X 20 watts at 4 ohmsi kHz (DiN)
2 X i4 watts at 8 ohmsi kHz (DiN)
2 X 32 watts at 4 ohmsi kHz (EiAJ)

Total harmonic distortion
0.2% at rated power

IM distortion
0.2% at rated power

Damping factor
30 at 8 ohms

Frequency and response
15 to 30,000 Hz :i dB

Input sensitivity/impedance
TUNER/LINE/DVD/CD: 200 mV/BO kohms
TAPE PLAY: 200 mV/SO kohms
MD PLAY: 200 mV/50 kohms
CDR/PC PLAY: 200 mV/2.2 kohms

Output sensitivity/impedance
TAPE REC: 200 mV/2:2 kohms
MD REC: 200 mV/22 kohms
CDR/PC REC: 200 mV/2.2 Kohms

Bass control
: 8 dB at 50 Hz

Treble control
: 8 dB at i0,000 Hz

SERVICE PROCEDURES

Replacing the fuses

E- This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse , For fuse rating, refer to
the marking adjest to the symbol.

EB- Ce symbole indique que le fusible utilise est e lent.

Pour une protection permanente, n'utiliser que des fusibles de meme
typet Ce demier est indique la qu le present symbol est apposre.

Acoustic Presence
1: +3 dB at 20.5 Hz, +3 dB at 82 Hz
2: +3 dB at 20.5 Hz, +6 dB at 82 Hz

Signal to noise ratio (IHF-A)
LINE/DVD/CD/MD/CDR/PC: iOO dB

Muting
750 dB

Power supply
AC 120 V, 60 Hz
AC 2307240 V, 50 Hz

Power consumption
(ACiZO\/,60 Hz) :63W
(AC 230-240 V, 50 Hz) :58 W

Dimensions (W X H X D)
205 X 9i X 302 mm
8-1/16" >< 3-9/i6 >< i1-7/8"

Weight
3.4 kg, 7 5 lbs

Specifications and externai appearance are subyect to
Change Without notice as a result of product improve
merit

REF.NO. PART NO. DESCRIPTION

F901 252158 A 1.6A»ULFl'-237, Fuse