Yamaha C-80 - Troubleshooting and Specifications; Amplifier Troubleshooting Guide; Technical Specifications

Before assuming that your amplifier is faulty, check the following | troubleshooting 1i ist which details the corrective action you can take
yourself without having to call a service engineer. If you have any doubts or questions, get in touch with dodi nearest Yamaha dealer.
Power is not supplied even when the
Power switch is turned on.
No sound is heard. -
Plug it in securely.
The power plug is not securely plugged in.
Input switches set incorrectly. Set input switches to source you want to
hear.
Check and secure cannections.
Connect them securely.
The power amp is not connected correctly,
The input terminals are not connected
Securely.
Regulate balance with the control iocated
lV——————— epe ae
| One che anne! sounds stronger than the other | The balance control needs adjustment. .
| below the knobs for loudness and volume.
The Phono rotary switch is iS 8t set tod an A MM Set the switch to MC position,
position,
Sound from MCc cart rtridge is is 5 Jow.
Connect the wire. (Sometimes better
results can be obtained without the wire.) |
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A loud humming sound is heard during
record play.
| Turntable's ground wire is not connected to
_ amplifier's ground terminal.
Set Rec Out to source you are record ing.
—— ——Ü
| Rec Out selector set improperly.
The Audio Mute s witch is on.
Volume is too low even when the Volume -
control is t is turned up.
input Sensitivity/Impedance
FOO Mia 100 ¿41100 ohms, 1 k-ohms
MM dista E e ae 2.5 mV/ 100 ohms, 47 k-ohms
(220, 330 pF)
. DAD, Aux, Tape, Tuner suaeon 150 ) mV/47 k- ohms
Output Level/impedance
Pre Out ....... PUENTE MR ERO DNE: 1.5 V/47 ohms
ger CL SR SE 150 mV/600 ohms
THD (20-20,000 Hz}
Phono MC to Rec Out, 3 V cian ada 0.001 %
Phono MM to Rec Out, V... iii td 0.001%
DAD, Aux, Tape, Tuner to Rec Out, 3 V oon 0.001%
Frequency Response
DAD, Aux, Tape, Tuner... 20 to 20,000 Hz + o. —0.2 dB
RIAA Deviation
Phono MO, MN, ut mischt i RP AUS 20 to 20,000 Hz x 0.2dB
Phono MC, MM ooo. O 10 to 100,000 Hz «0.5 dB
Signal to Noise Ratio
Phono MC (500 «V, Input Shorted)... NETTE 91 dB
Phono MM (5.0 mV, input Shorted)... une 95 dB
DAD, Aux, Tape, Tuner (150 mV, Input Shorted) ccc. 106 dB
Power Supply ........................sssss fcri ad AC 120 VIGO Hz
Power Consumption o... esses 30 W
Dimensions (Wo H x D} uuu. IRAN 435 x 95 x 380 mm
(17-118 x 3- 3/4” x 14-15/167)
Weight M EE ENERO 8.8 kg
(14 lbs. 15 oz.)
Specifications subject to change without notice,