TEAC SRL-50 Service manual

SERVICE MANUAL

SR-L50

CD Receiver

NOTES CONTENTS

● PC boards shown are viewed from parts side.

● Parts marked with * require longer delivery time.

● The parts with no reference number or no parts number in the

exploded views are not supplied.

1 SAFETY INFORAMTION……………………

2 SPECIFICATIONS……………………………

3 ADJUSTMENT AND CHECKS………….….

3-1 TUNER SECTION……....………………… 4

2

3

4

● As regards the resistors and capacitors, refer to the circuit

diagrams contained in this manual.

●

components. They must be replaced with identical

components – refer to the appropriate parts list and

ensure exact replacement.

● Parts of [] mark can be used only with the version designated.

● [T/C]:USA/CANADA,[EUR]:EUROPE,[UK]:UK,

[HKG]:HONG KONG

Parts marked with this sign are safety critical

3-2 CD SECTION…………………………….… 7

4 EXPLODED VIEWS AND PARTS LIST……

5 PC BOARDS AND PARTS LIST……………

6 WIRING DIAGRAM……………………….….

8

16

26

SR-L50

1 SAFETY INFORMATION

SAFETY INFORMATION

This product has been designed and manufactured according to FDA regulations “title 21, CFR, chapter 1,

subchapter J based on the Radiation Control for Health and Safety Act of 1986” and is classified as class 1 laser

product. There is no hazardous invisible laser radiation during operation because invisible laser radiation emitted

inside of this product is completely confined in the protective housings. The label required in this regulation is shown

below.

● CAUTION

USE OF CONTROLS OR ADJUSTMENT OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE

SPECIFIED HERE IN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

Optical pickup:

Type : SLD104AU

Manufacturer : SONY Corporation

Laser output : Less than 0.5mV on the objective lens

Wavelength 760 – 800 nm

2

SR-L50

2 SPECIFICATIONS

TUNER Section (FM)

Frequency Range……………… 87.50 to 108.00 MHz(100kHz step)

(U.S.A./Canada Model, General Export Model)

Frequency Range……………..… 87.50 to 108.00 MHz(50kHz step)

(Europe Model)

TUNER Section (AM)

Frequency Range……………...………520 to 1710 kHz(10kHz step)

(U.S.A./Canada Model, General Export Model)

Frequency Range…………….....………522 to 1620 kHz(9kHz step)

(Europe Model)

CD PLAYER Section

Frequency Response……………………..…...…20 to 20kHz (±1dB)

Wow and Flutter……………………….………...……...Unmeasurable

SPEAKER SYSTEM Section

Type.…………………………….………………..……65 mm 1-way x2

80 mm subwoofer x1

Impedance…………….………………………….……..8 ohms (L & R)

8 ohm (subwoofer)

GENERAL

Total Output Power………………………………………………15W

Power Requirements……..…120V, 60Hz (U.S.A./Canada model)

230V, 50Hz (Europe Model)

120V/230V AC, 50-60Hz (General export model)

Power Consumption………...………………..……..……..……40W

Dimension ( W x H x D ) ……………….…….389 x 213 x 216 mm

(15-7/8” x 8-3/8” x 8-1/2”)

Weight..…………………………………………...6.0 kg (13-3/16 lb)

Standard Accessories

Remote Control Unit (RC-917) x 1

FM lead-type antenna

(U.S.A./Canada Model, General Export Model)

Remote Control Unit (RC-917) x 1

(Europe Model)

Design and specifications are subject to change without notice.

●

Illustrations may differ slightly from production models

●

3

SR-L50

3 ADJUSTMENTS AND CHECKS

3-1 TUNER SECTION

Use a screwdriver with a plastic or ceramic grip for all adjustment.

AM adjustment

1. Set the function switch to the TUNER position.

2. Set the BAND switch to the AM position.

3. Connect the test loop antenna across the output of the signal generator.

4. Connect the oscilloscope to the PHONES JACK terminal.

5. Set the signal generator as listed in the alignment chart.

FM adjustment

1. Set the function switch to the TUNER position.

2. Set the BAND switch to the FM position.

3. Connect the signal generator output through a 75 ohm dummy antenna to "ANT"

on TUNER PCB CN8.

4. Connect the oscilloscope to the PHONES JACK terminal.

5. Set the signal generator as listed in the alignment chart.

3-1-1. RADIO ALIGNMENT

L4

IC2

IC1 TA2057N

TC1

L5

CW11

L3

SR-L50 TUNER PCB

CN10

FIG. 1-1 Adjustment locations

4

TUNER PACK

SR-L50

3-1-2 AM TUNER

ITEM

1.VOLTAGE

adjustment

2.IFT

adjustment

3.ANT Coil

adjustment

4.TC1

adjustment

SG SETTING

Audio Modulation Frequency Output

610KHz(T/C) 610KHz(T/C)

1KHz 30%

612KHz(EUR)

610KHz(T/C) 610KHz(T/C)

1KHz 30%

612KHz(EUR)

1410KHz(T/C) 1410KHz(T/C)

1KHz 30%

1413KHz(EUR)

76dBuV

TUNER

SETTING

1710KHz(T/C)

1620KHz(EUR)

530KHz(T/C)

531KHz(EUR)

612KHz(EUR)

1413KHz(EUR)

ADJUSTMENTS

L4

Check

L5

Am ant coil

L3

TC1

Repeat step 3

and 4

MEASURING

POINTS

RESULT

VT

8.0V

VT

1.5V

Maximum

output level

Maximum

output level

Maximum

output level

AM Signal generator AM

AC voltmeter

SR-L50

PHONES

AM LOOP

Antenna

60CM

FIG. 1-1-1

1KΩ

5

SR-L50

3-1-3 FM TUNER

MEASURING

POINTS.

RESULT

VT

5.5-5.9V

VT

1.2-1.6V

ITEM

VOLTAGE

adjustment

SG SETTING

AUDIO Modulation Frequency Output

TUNER

SETTING

106.1MHz Check

90.1MHz Check

ADJUSTMENTS

FM Signal generator FM

75 ohm

AC voltmenter

SR-L50

PHONES

1KΩ

FIG.1-1-2

6

1KΩ

3-2 CD SECTION

Auto alignment.

SR-L50

7

EXPLODED VIEW-1

REF. NO PARTS NO. DESCRIPTION REMARKS

1 – 1 024-43010033

1 – 2 061-OLT10800 SPEAKER 2” 8 ohm 5~8W

1 – 3 035-SD900082 R/L SPEAKER EVA WASHER

1 – 4 023-23014033

1 – 5 010-SR500200 LEFT SPEAKER BOX COVER

1 – 6 010-SR500300 RIGHT SPEAKER BOX COVER

1 – 7 099-39SRL502 ABSORB COTTON B (SIZE:108x80Xt20MM)

1 – 8 035-SLD90052 EVA SHEET(D):93x5Xt1.0MM

1 – 9 035-SRL50022 EVA SHEET(C):11.8x5xT1.0MM

1 – 10 010-SR500100 WOOFER BOX

1 – 11 011-SD900200 HEAT SINK BKT

1 – 12 023-23008032

1 – 13 023-23012033

1 – 14 018-SRL50000 POWER IC HEAT SINK

1 – 15 022-23008033

1 – 16 023-13006032

1 – 17 011-SR500500 TUNER PCB SHIELD PLATE

1 – 18 100-SR502060 TUNER PCB ASS’Y ( FOR T/C )

100-SR501180 TUNER PCB ASS’Y ( FOR EUR )

1 – 19 100-SR502010 MAIN PCB ASS’Y ( FOR T/C )

SCREW Ø3x10MM PWA BLACK HD

SCREW Ø3x14MM BB BLACK HD

SCREW Ø3x8MM BB ZMC HD

SCREW Ø3x12MM BB BLK HD

SCREW Ø3x8MM BM BLK HD

SCREW Ø3x6MM PB ZMC HD

SR-L50

100-SR501160 MAIN PCB ASS’Y ( FOR EUR )

1 – 20 023-23010032

1 – 21 099-39SRL501 ABSORB COTTON A (SIZE:126x126xT20)

1 – 22 035-SRL50002 EVA SHEET(A):183x5xT1.0MM

1 – 23 035-SRL50012 EVA SHEET(A):138x5xT1.0MM

1 – 24 011-SR900401 TRANSFORMER BKT

1 – 25 021-44015032

021-44020032

1 – 26 021-44018032

021-44024032

1 – 27

094-SD900100 TRANSFORMER VDE 230V/50Hz ( FOR EUR )

1 – 28 087-00000007 AC CORD “UL” L=2000MM BLACK ( FOR T/C )

087-00000001 AC CORD “VDE” L=2000MM BLACK ( FOR EUR )

087-00000004 AC CORD “BSI” L=2000MM BLACK ( FOR UK/HKG )

1 – 29 010-SD900600 CORD STOP

1 – 30 044-SLD90040 SPEAKER PAPER TUBE(BOTTOM)

1 – 31 023-44010032

1 – 32 061-OLT10801 SPEAKER 3” 8 OHM 10~15W

1 – 33 035-OOLT1052

084-SD900200 TRANSFORMER UL 120V/60Hz ( FOR T/C )

SCREW Ø3x10MM BB ZMC HD

SCREW Ø4x15MM PWT ZMC HD ( FOR T/C )

SCREW Ø4x20MM PWT ZMC HD ( FOR EUR )

SCREW Ø4x18MM PWT ZMC HD ( FOR T/C )

SCREW Ø4x24MM PWT ZMC HD ( FOR EUR )

SCREW Ø4x10MM PWB ZMC HD

EVA SHEET:Ø83xØ73xT1.5MM

1 – 34 001-SR500100 BOTTOM CABINET ( FOR T/C, EUR )

1 – 35 100-SR502100 AUX PCB ASS’Y ( FOR T/C )

100-SR501190 AUX PCB ASS’Y ( FOR EUR )

1 – 36 037-SR500100 RUBBER FOOT B

1 – 37 037-SD900500 TRANSFORMER RUBBER SHEET (B) ( FOR EUR/HKG )

1 – 38 037-SD900600 TRANSFORMER RUBBER (ROUND) ( FOR EUR/HKG )

1 – 39 015-SR500300 ADIABATIC SHEET <B> ( FOR EUR/HKG )

1 – 40 037-SD900400 TRANSFORMER RUBBER SHEET (A) ( FOR EUR/HKG ) 9