Teac AG 790 Service Manual

Page 1

TEAC

SERVICE MANUAL

AG-790

AM/FM Stereo Receiver

CONTENTS

1 SPECIFICATIONS ......................
2 ADJUSTMENTS AND CHECKS ------
3 EXPLODED VIEWS AND PARTS LIST
4 PC BOARDS AND PARTS LIST ----------

NOTES

0 PC boards shown are viewed from parts side.

I The parts with no reference number or no parts number in the
exploded views are not supplied.

0 As regards the resistors and capacitors, reler t0 the circuit diagrams
contained in this manual.

0 A Paris marked with this sign are safety critical components. They
must be replaced with identical components . refer to the appropriate
parts list and ensure exact replacement.

Effective : April, 2003 8-0092A

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1 SPECIFICATIONS

Amplifier Section
Output Power..:.100 +100 watts RMS (0:9 "/0 THD,1 kHz, 8 ohms)
Total Harmonic Distortion... .: 0.05 % (at 70 watts,1 kHz)
Input Sensitivity/Impedance .. .... PHONO: 5 mV/22 kohms
LINE: 300 mV/22 kohms
Frequency Response ...................... PHONO: 20 Hz-20 kHz, :3 dB
LINE: 20 Hz-50 kHz, +1/-3 dB
PHONO: 80 dB (IHF-A)
LINE: 80 dB (IHF-A)
Tone Control ............................................ BASS: :10 dB at 100 Hz
TREBLE: :10 dB at 10 kHz
Loudness Control (Volume at -40 dB Position) ..............................
+9 dB at 100 Hz, +8 dB at 10 kHz

Signal-to-Noise Ratio :::::

FM Tuner Section
(Without notes 98.1 MHz, 65 dBf)

Tuning Range ............. 87.5 MHz-108.0 MHz (100 kHz steps)
Usable Sensitivity (IHF) ...................... Mono: 20 dBf
50 dB Quieting Sensitivity .. Mono: 39 dBf, Stereo: 46 dBf
Capture Ratio ::::::::::
Image Rejection Ratio .
AM Suppresion Ratio ..........
Harmonic Distortion (1 kHz)
Frequency Response ...........
Stereo Separation (1 kHz) .:
Signal-to-Noise Ratio :::::

Mono: 0.4 %, Stereo: 0.5 %
...... 30 Hz-15 kHz, +2/-3 dB
.................................. 35 dB
Mono: 57 dB, Stereo: 55 dB

AM Tuner Section

Tuning Range ...... .530 kHz-1.720 kHz (10 kHz steps)

Usable Sensitivity 55 dB/m
Total Harmonic Distortion :. 1 /0 at 85 dB/m
Signal-to-Noise Ratio ..... . 48 dB at 85 dB/m

General

Power Requirements... 120 W230 V, 50-60 Hz

Power Consumption .. 180 W
AC Outlets ................ UnSWItched x 2, Total 100 W max (1 A max)
Dimensions (W x H x D) ................................ 435 x 139 x 335 mm

(17-1/8" x 5-1/2x13-3/16")
.. 9.4 kg (20-11/16 lbs)
.. AM Loop Antenna x1
FM "T" Type Antenna x 1
Remote Control Unit x1

Weight (net) ...............
Standard Accessories .

0 Design and specifications are subject to change without notice.

Voltage Conversion
(General export models only)

Be sure to remove the power cord from the AC outlet before
repositioning the voltage converter switch.

1. Locate the voltage selector on the rear panel.
2. Using a flat-bladed screwdriver, set to the appropriate
230V or 120V position according to your area.

IN NORTH AMERICA USE ONLY ON 120 V SUPPLY.