SONY TAE1 - Service Manual Immediate Download

TA-E1

SPECIFICATIONS

STEREO PRE AMPLIFIER

SERVICE MANUAL

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

MICROFILM

TABLE OF CONTENTS

1. GENERAL ........................................................................... 3

2. ELECTRICAL ADJUSTMENT .................................... 5

3. DIAGRAMS

3-1. Circuit Boards Location ........................................................ 5

3-2. Schematic Diagram Main Section (1/3) .......................... 6

3-3. Schematic Diagram Main Section (2/3) .......................... 7

3-4. Schematic Diagram Main Section (3/3) .......................... 8

3-5. Printed Wiring Board Main Section ................................ 9

3-6. Schematic Diagram Power Section ............................... 10

3-7. Printed Wiring Board Power Section ............................ 11

4. EXPLODED VIEWS

4-1. Top Plate and Back Panel Section ....................................... 12

4-2. Front Panel Section ............................................................. 12

4-3. Bottom Plate Section .......................................................... 13

5. ELECTRICAL PARTS LIST ................................... 14

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow-

ing safety checks 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. Check leakage as

described below.

LEAKAGE

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). Leak-

age current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers' instructions to use these

instruments.

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 voltmeter. The "limit" indication is 0.75

V, so analog meters must have an accurate low-voltage scale.

The Simpson 250 and Sanwa SH-63Trd are examples of a pas-

sive VOM that is suitable. Nearly all battery operated digital

multimeters that have a 2V AC range are suitable. (See Fig. A)

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

0.15

µF

To Exposed Metal

Parts on Set

1.5k

voltmeter

(0.75V)

Earth Ground

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK

! OR DOTTED LINE

WITH MARK

! 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 PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE

!SUR

LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES

PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE

FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS

QUE PAR DES PIÈCES SONY DONT LES NUMÉROS

SONT DONNÉS DANS CE MANUEL OU DANS LES

SUPPLÉMENTS PUBLIÉS PAR SONY.

MODEL IDENTIFICATION

-- BACK PANEL --

PARTS No.

MODEL

4-214-526-1

US , CND

4-214-526-2

AEP, UK, E, AUS

Parts No.

Abbreviation

CND : Canadian model

AUS : Australian model

SECTION 1

GENERAL

This section is extracted from

instruction manual.

TA-E1

SECTION 3

DIAGRAMS

3-1. CIRCUIT BOARDS LOCATION

SECTION 2

ELECTRICAL ADJUSTMENTS

IDLING ADJUSTMENT AND OFFSET VOLTAGE

CHECK

· Perform this adjustment after replacing CP103 and CP104.

· Perform this adjustment more than 10 minutes after supplying

the power.

Connection:

BALANCE OUTPUT LEVEL ADJUSTMENT

· Perform this adjustment when replacing CP102.

· Perform this adjustment after the idling adjustment

Connection:

MAIN board

SW L board

AC J board

LED A board

LED B board

SW P board

PS board

VOL board

THIS NOTE IS COMMON FOR PRINTED WIRING

BOARDS AND SCHEMATIC DIAGRAMS.

(In addition to this, the necessary note is printed

in each block.)

For schematic diagrams.

Note:

· All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolytics

and tantalums.

· All resistors are in

and 1/4 W or less unless otherwise

specified.

: indicates tolerance.

· 2 : nonflammable resistor.

· 5 : fusible resistor.

· C : panel designation.

· S : B+ Line.

· T : B Line.

· H : adjustment for repair.

· Voltages and waveforms are dc with respect to ground in

playback mode.

· Voltages are taken with a VOM (Input impedance 10 M

Voltage variations may be noted due to normal produc-

tion tolerances.

· Signal path.

: TUNER

Note:

The components identi-

fied by mark

! or dotted

line with mark

! are criti-

cal for safety.

Replace only with part

number specified.

Note:

Les composants identifiés par

une marque

! sont critiques

pour la sécurité.

Ne les remplacer que par une

piéce portant le numéro

spécifié.

For printed wiring boards.

Note:

· X : parts extracted from the component side.

: Through hole.

· b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:

Pattern face side: Parts on the pattern face side seen from the

(Side B)

pattern face are indicated.

Parts face side: Parts on the parts face side seen from the

(Side A)

parts face are indicated.

Digital voltmeter

TP501 (L-CH), TP502 (R-CH)

TP503 (L-CH), TP504 (R-CH)

MAIN board

Procedure:

1. Connect the digital voltmeter as shown above.

2. Adjust RV501 (L-CH) and RV502 (R-CH) of the MAIN board

so that the digital voltmeter reads 50 mV ±5 mV. (Idling adjust-

ment)

3. Measure the voltage of both terminals of R221 (L-CH) and R222

(R-CH) of the MAIN board, and check that the voltage is within

2 mV.

(Offset voltage check)

Measuring

Adjusting

Point

Value

L-CH

TP501 to TP503

RV501

50 mV ± 5 mV

R-CH

TP502 to TP504

RV502

50 mV ± 5 mV

Measuring Point

Specified Value

L-CH

Both terminals of R221

Within 2 mV

R-CH

Both terminals of R222

Within 2 mV

Procedure:

1. Connect as shown above.

2. Rotate the INPUT SELECTOR knob, and set the input source

to LINE 1 .

3. Set the input level so that the oscilloscope waveform level be-

comes approx 3 V.

4. Adjust RV401 (L-CH) and RV402 (R-CH) so that the two wave-

form levels on the oscilloscope become equal and their phases

are reversed.

BALANCED-OUT

2 3 pin

LINE1 input

Set

AF OSC

attenuator

Oscilloscope

Adjusting Value:

Adjusting Point

Adjusting Value

L-CH

2 (CH1) and

RV401

3 (CH2) of CN203

R-CH

2 (CH1) and

RV401

3 (CH2) of CN203

Phases of waveforms of

Pins

2 and 3 should be reversed

Waveform of

2 (CH1)

Waveform of

3 (CH2)

Adjustment Location:

[MAIN board] (Component Side)

OFFSET

VOLTAGE

R222 R221

RV401

BALANCE OUT

LEVEL L CH

RV402

BALANCE OUT

LEVEL R CH

RV501

IDLE

L CH

TP503

RV502

IDLE

R CH

TP501 TP504 TP502