Onkyo TX-910 - Adjustment Procedures; Preparation and Standard Knob Positions; Operation Confirmation; Amplifier Section Idling Current Adjustment

ADJUSTMENT PROCEDURES
Preparation
1 .Input
FM mono: lkHz.75kHz devi.,60dB/ p V
FM stereo: lkHz,75kHz devi.,60dB/ p V
Pilot signal 19kHz 7.5kHz devi.
AM:400Hz 30% mod.
2.0utputs
Connect the non-inductive type resistors of 8 ohms
to the speaker terminals A unless otherwise noted.
3.Standard Knob Position
VOLUME ................................... Maximum
......... BASS/TREBLE/BALANCE ..Center
.................. MUTING/LOUDNESS Off
..................... INPUT SELECTOR CD
SPEAKERS ................................ A
Confirming Operation
1 .Protection circuit
a.Speaker relay
The speaker relay turns on after the power switch turned on for 5 minutes.
The speaker relay turns off immediately after the power switch turns off.
b. Over-voltage confiiation
The speaker relay is off
irnmeditely after DC voltage + 6V is applied to the terminal CD.
Amplifier section
Idling Current Adjustment
Connect the DC voltmeter to the terminals LID(RID) and CT on the power amplifier pc board.
Adjust the semi-fixed resistor R51 l(R512) so that the indication of voltmeter is 5 +0.5mV.
Note:( ):Right channel
=12 8
RID
e =11
LID
vm On novcr
POWER AMP- PC BOARD
SOLDERING SIDE