Sony ta av 411 service manual

Page 1

IA-IIVzIII

SERVICE-MANUAL (lemme,

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS OutDUt
POWER OUTPUT AND TOTAL HARMONIC TAPE Phono jacks Voltage 150 mV
DISTORTION: (REC OUT) Impedance 1 kohm
With 8-ohm loads, both channels driven, SPEAKERS " Qfifips Speakers 3 16
from 40 - 20,000 HZ; rated 135 watts per HEADPHONES stereo phone Accepts low and high
channel minimum HMS power, with less 13° mpeume headphones
than 0.9% total harmonic distortion from GRAPHlC EQUALIZER controls

' ' Boost/Cut range:
250 mIllIwatts to rated output. :8dB(1OOHz.330Hz.1kHz.3.3kHz)

16 dB (10 kHz)

Amplifier section
Power bandwidth (lHF)

so Hz - 30 kHz (8 ohms) General
Dynamic headroom 1.7 dB ('78 lHF) power requirements
Harmonic distortion Less than 0.9% at rated output 120 v AC 50 Hz
(Surround OFF} . . Power consumption
Frequency response PHONO: RIAA equalIzatIon culve 250 W
0% EDEOEILEINEZHLAPE: AC outlets 3 switched, 120 W1 A max,
Z 3 Z - Dimensions Approx. 430 x 145 x 360 mm (w/h/d)
Surround output 15 W + 15 W (8 ohms) (17 x 55/: x 141/3 inches)
Damping factor 27 (8 ohms. 1 kHz) Weight Approx. 9_9 kg (21 lb 14 02)
Input Accessories supplied
ln t t k Jack ~~ , l d SIN (weighting Remote Commander RM»U212 (1)
p 2: type sens'l'v'ly mpg ance network, input level) Sony batteries SUM 3(NS) (2)
71 dB
PHONO Phono 30 mV 50 1(0th 75 dB" Design and specifications subject to change without name.
(A, 30 mV)
CD,V|DEO, 92 d8
TUNER. Phone 250 mV 50 kohms 83 dB'
TAPE (A. 250 mV)

"78 lHF

INTEGRATED STEREO AMPLIFIER
SONE

Page 2

TA- AV41 1

SAFETY CHECK-OUT

After correcting the original service problem,
perform the following safety check before releasing
the set to the customer:

Check the antenna terminals, metal trim, metallized
knobs, screws, and all other exposed metal parts for
AC leakage. Cheek leakage as described below.

LEAKAGE TEST

The AC leakage from any exposed metal part to
earth ground and from all eXposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 0.5 mA (500 microampers). Leakage
current can be measured by any one of three
methods.

I. A commercial leakage tester, such as the
Simpson 229 or RCA WT-S40A. Follow the
manufacturers instructions to use these instru~
ments.

2. A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.

3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The limit" indication is 0.75V, so
analog meters must have an accurate IOW<
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are
suitable. (See Fig. A)

To Exposed Metal
Part: on Set

AC
0.15uF €15) / voltmeter
(0. 75 VI

5? Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

TABLE OF CONTENTS

Section Title Page
SPECIFICATIONS ..................................... 1
1_ GENERAL .................................... 3

2. DIAGRAMS
2- 1. Description on 1C101( uPD75206-717-3BE) ~~~~~ 6

2.2 Key operation .........................

2-3. MATRIX for FL tube and KEY IN ------ 12
2-4. Description on IC303 (LV1001M) -------------- 14
2-5. Circuit Boards Location ---------------------- 16
2-6. Semiconductor Lead Layouts ------------- - 17
2-7. Printed Wiring Boards-- ~ 18

2-8, Schematic Diagram .......................

2-9. 1c Block Diagrams ............................. 26

3. EXPLODED VIEWS

3- 1. Overall Section 1 .........................
3.2_ Overall Section 2 .........................

6. ELECTRICAL PARTS LIST ----------------------- 29

SAFETY~RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BV MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUD
LISHED BY SONY.