Onkyo A-9377 Service Manual (English)

Other manuals for Onkyo A-9377

Questions and Answers:

B
blairrobinJul 26, 2025
Why is there no sound coming from my Onkyo Amplifier A-9377?
- G
  Gina WardJul 26, 2025
  If the MUTING indicator is flashing, press the [MUTING] button on the remote controller to unmute the Onkyo A-9377. Also ensure that all audio plugs are fully inserted, the inputs and outputs of all components are correctly connected, the speaker cable polarity is correct, the correct input source is selected, no cables are bent or damaged, and the SPEAKERS selector is correctly set (not OFF). If you are using a turntable with an MC type cartridge, ensure you are using an MC head amp or MC transformer.
S
Selena SpencerJul 30, 2025
How to fix an Onkyo A-9377 Amplifier remote controller that is not working?
- J
  Jacob RamirezJul 30, 2025
  Ensure that the remote controller is not too far from the A-9377 and has a clear path to the A-9377's remote control sensor. Also, make sure that the A-9377 isn't in direct sunlight or exposed to inverter-type fluorescent lights. If the A-9377 is in a rack or cabinet with colored glass doors, the remote controller may not work well when the doors are closed. Finally, make sure that the batteries are installed correctly (page 10) and try new batteries, avoiding mixing old and new types (page 10).
E
Evan DelacruzAug 3, 2025
How to troubleshoot an Onkyo Amplifier A-9377 that will not turn on?
- S
  Sara MunozAug 3, 2025
  Make sure the power cord is properly plugged into the wall outlet. If it is, unplug the power cord, wait ten seconds or more, then plug it in again.
T
Tyler ParksAug 8, 2025
What to do if my Onkyo Amplifier A-9377 locks up due to interference?
- M
  Megan SimmonsAug 8, 2025
  To address this issue, unplug the power cord from the wall outlet, wait at least ten seconds, and then plug it back in again.
S
Sheena ToddAug 12, 2025
Why do the tone controls not work on my Onkyo Amplifier A-9377?
- M
  Marc DeleonAug 12, 2025
  If the TONE/DIRECT indicator is illuminated, the Direct function is enabled, and the tone controls are disabled. To regain control, press the [TONE/DIRECT] button to turn the function off; the TONE/DIRECT indicator will then turn off (page 16).
S
Sarah CastilloAug 16, 2025
What causes noise in my Onkyo Amplifier A-9377 and how do I fix it?
- M
  mgibsonAug 16, 2025
  Avoid bundling audio cables with power cords or speaker cables, as this can degrade audio performance. Additionally, the noise might be due to an audio cable picking up interference; try repositioning the cables.
B
burchedwardAug 20, 2025
What to do if SPEAKERS A and B indicators are both flashing on my Onkyo Amplifier A-9377?
- D
  Daniel ParkAug 20, 2025
  Set the POWER switch to OFF immediately, remove the power cord from the wall outlet, and contact your Onkyo dealer.

Onkyo A-9377 Specifications

General

Package depth	549 mm
Package width	428 mm
Package height	258 mm
Dimensions (WxDxH)	435 x 15 x 348 mm
Power requirements	AC 220-230 V, 50/60 Hz
Impedance	4 Ω
Frequency range	10 - 70000 Hz
Signal-to-Noise Ratio (SNR)	96 dB
Total Harmonic Distortion (THD)	0.08 %
Product color	Silver
Package weight	10700 g
Power consumption (typical)	286 W