18
SYMPTOM
The unit fails to turn on when the
POWER switch is pressed.
No sound.
Sound “hums”.
Poor bass reproduction.
Sound output level to either or both
of the rear surround speakers is
lower than other speakers.
No sound from the center speaker.
No output of LFE sound.
Whole sound level is low, even
though the volume is increased on
the amplifier.
The difference of sound level
between a high level part and a low
level part is too great.
Noise from nearby TV or tuner.
CAUSE
Power cord is not plugged in or is not
completely inserted.
Incorrect input or output cord
connections.
Improper input mode selection.
Improper input mode selection on the
amplifier.
Incorrect cord connections.
The setting of LFE/BASS OUT is at the
SUBWOOFER position, though your
system does not include a subwoofer.
Output mode selection for each channel
(MAIN, CENTER or REAR) is improper.
Sound output level to either or both of
the rear surround speakers is
decreased.
The setting of CENTER SP. is at the
PHANTOM position.
The output level of LFE (LFE MIX LVL)
is adjusted to MUTE.
Output level (OUTPUT TRIM)
adjustment on this unit is low.
The setting of the DYNAMIC RANGE is
at the MAX position.
This unit is too close to the affected
equipment.
REMEDY
Firmly plug in the power cord.
Connect the cords properly. If the
problem persists, the cords may be
defective.
Select the proper input mode (RF, OPT
or COAX).
Select the “5-ch discrete AC-3 input”
mode on the amplifier.
Firmly connect the audio plugs. If the
problem persists, the cords may be
defective.
Select the MAIN position.
Make output mode selections suitable
for your speaker system.
Increase the level.
Select the SML or LRG position.
Increase the level.
Increase the level.
Select the STANDARD position.
Move this unit further away from the
affected equipment.
If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple
measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and
contact your authorized YAMAHA dealer or service center for help.
TROUBLESHOOTING
SPECIFICATIONS
Output Level/Output Impedance
MAIN L/R, CENTER, SURROUND L/R
1 kHz, 0 dB INPUT...............................................2V/1.2 k
Ω
SUBWOOFER
50 Hz, 0 dB INPUT...............................................6V/1.2 k
Ω
Input Impedance (RF, COAXIAL).........................................75
Ω
Frequency Response
MAIN L/R, CENTER, SURROUND L/R (LARGE)
20 Hz–20 kHz..........................................................0
5
1 dB
Filter Characteristics
MAIN L/R, CENTER, SURROUND L/R (SMALL)
H.P.F. ..................................................fc=90 Hz, 12 dB/oct.
SUBWOOFER
L.P.F. ...................................................fc=90 Hz, 24 dB/oct.
Total Harmonic Distortion
MAIN L/R, CENTER, SURROUND L/R (1 kHz)
...........................................................................0.01% or less
SUBWOOFER (50 Hz) ......................................0.01% or less
Signal to Noise Ratio (IHF-A).............................105 dB or more
Channel Separation (1 kHz).................................80 dB or more
Power Supply
U.S.A. model..................................................AC 120V, 60 Hz
General model .....................AC 110/120/220/240V, 50/60 Hz
Power Consumption ............................................................35W
AC OUTLET
UNSWITCHED x 1 ................................................200W max.
Dimensions (W x H x D) ............435 mm x 126 mm x 351.7 mm
(17-1/8” x 4-15/16” x 13-7/8”)
Weight ........................................................6.1 kg (13 lbs. 7 oz.)
* Please note that all specifications are subject to change
without notice.
