File name Onkyo-DTA9.4 pwramp.pdfDTA-9.4
Ref. No. 3750
SERVICE MANUAL
May, 2003
SEVEN CHANNEL AMPLIFIER MODEL DTA-9.4
Black model BUDD 120V AC, 60Hz
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 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 OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.
DTA-9.4 SPECIFICATIONS
Amplifier section
Continuous average power output (FTC Power, Rated Power) (Measured with AES-17 LPF) Front L/R: 120 Watts per channel min. RMS. Into 8 ohms 2 channel driven, from 20 to 20,000 Hz with no more than 1 % total harmonic distortion. 240 Watts per channel min. RMS. Into 4 ohms 2 channel driven, 1,000 Hz with no more than 1.5 % total harmonic distortion. Center: 120 Watts min. RMS. Into 8 ohms 1 channel driven, from 20 to 20,000 Hz with no more than 1 % total harmonic distortion. 240 Watts min. RMS. Into 4 ohms 1 channel driven, 1,000 Hz with no more than 1.5 % total harmonic distortion. Surround L/R: 120 Watts per channel min. RMS. Into 8 ohms 2 channel driven, from 20 to 20,000 Hz with no more than 1 % total harmonic distortion. 240 Watts per channel min. RMS. Into 4 ohms 2 channel driven, 1,000 Hz with no more than 1.5 % total harmonic distortion. Surround Back: 120 Watts per channel min. RMS. Into 8 ohms 2 channel driven, from 20 to 20,000 Hz with no more than 1 % total harmonic distortion. 240 Watts per channel min. RMS. Into 4 ohms 2 channel driven, 1,000 Hz with no more than 1.5 % total harmonic distortion. Dynamic Power Output 2 x 350 Watts at 2 ohms 2 x 267 Watts at 4 ohms 2 x 162 Watts at 8 ohms 1 % at rated power (1 kHz) 0.01 % at 1 watt output (1 kHz) 25 at 8 ohms 1 kHz 1 V, 5 k ohms (Unbalanced) 2 V, 10 k ohms (Balanced) 5 - 12V dc (12V Trigger) 10 Hz to 60 kHz : +1 dB, 3 dB (8 ohms) 115 dB (IHF-A, 1 V input / Unbalanced or 2 V input / Balanced)
General
Power Supply Power Consumption Power Consumption in standby mode Input terminals Analog Audio: Control: Power supply: Output terminals Analog Audio: Weight Unbalanced (RCA type) x 7 Balanced (XLR type) x 7 12V TRIGGER (CONTROL LINK) AC INLET (IEC type) Speakers x 7 39.0 lbs. AC 120 V, 60 Hz 5.3 A 3.8 W
Dimensions (W x H x D) 17-1/8" x 6-7/8" x 17-13/16"
Specifications and features are subject to change without notice.
Total Harmonic Distortion (Measured with AES-17 LPF) Damping Factor Input Sensitivity and Impedance
Frequency Response Signal to Noise Ratio
DTA-9.4 OPERATION CHECK-1
CHECK THE DC POWER SUPPLY CURRENT DETECTION
Notes
No load and No signal input.
How to check?
1. Remove the top cover. 2. Connect the power supply card to a wall outlet. 4. Power On the unit. 5. Short-circuit the both ends of P161 on NAPS-7789. An object should be in the following states.
Lights Blinks
Standby Power
CHECK |