TEAC STC-150 Service manual

PLL TUNING SUITCASE TYPE TURNTABLE

PC board shown are viewed from parts side.

The parts with no reference number or no parts number

in the exploded views are not supplied.

As regards the resistors and capacitors, refer to the

circuit diagrams contained in this manual.

!

Parts 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.

1 SPECIFICATIONS

2 SAFETY INFORMATION

3 ADJUSTMENT AND CHECKS

4 EXPLODED VIEW AND PARTS LIST

5 PC BOARDS AND PARTS LISTS

6 WIRING DIAGRAM

7 INCLUDED ACCESSORIES

2

3

4

6

11

15

16

ST-C150

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 1968" and is classified as class 1 laser product. There is not 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 .

CAUTION

USE OF CONTROLS OR ADJUSTMENT OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY

HAZARDOUS RADIATION EXPOSURE.RESULT IN

DO NOT REMOVE THE PROTECTIVE HOUSING USING SCREWDRIVER. IF THIS PRODUCT DEVELOPS TROUBLE, MAKE A CONTACT WITH OUR SERICEMAN, AND DO NOT USE THE PRODUCT A TROUBLED

STATE.

1

MODEL NO. ST-C150

FOR U.S.A.

1

XXXX

R

LISTED

AUDIO PRODUCT

2

Amplifier Section

Frequency Response :

Tuner Section

FM Frequency :

AM Frequency :

Record Player Section

Motor :

Drive System :

Speed :

Wow & Flutter :

Catridge Type :

Stylus

SPEAKER SYSTEM Section

Type :

Impedance :

ST-C150

2 SPECIFICATIONS

60 Hz to 20 kHz

87.5 MHz to 108.0 MHz

530 kHz to 1710 kHz

DC servo motor

Belt Drive

33-1/3 rpm, 45 rpm, 78 rpm

Less than 0.35% (WTD)

Ceramic Stereo Catridge

STL-153

1-ways

4 ohms

GENERAL

Power Requirements:

Power Consumption:

Dimension (W x H x D ):

Weight: (net)

Standard Accessories:

Design and specifications are subject to change without notice.

Illustrations may differ slightly from production models.

120v , 60Hz

15 W

Main Unit Speaker

Main Unit 7.95 kg

Speaker 2.85 kg x 2

,

Owner s Manual x 1 Warranty Card x 1 Adaptor 45 rpm x 1

379 x 463 x 249 mm

136 x 452 x 230 mm

3

ST-C150

3 ADJUSTMENTS AND CHECKS

3-1 TUNER SECTION

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

3-1-1 FM adjustment

1. Set the function switch to the FM position.

2. Connect the signal generator output through a 75 ohm dummy

antenna to "ANT" on MAIN PCB.

3. Connect the oscilloscope to the speaker terminal.

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

3-1-2 AM adjustment

1. Set the function switch to the AM position.

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

3. Connect the oscilloscope to the speaker terminal.

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

3-2 Adjustment and Test Points

L7

T2

L6

L3

L2

MAIN PCB

4

3-2-1 FM/AM alignment chart

ST-C150

ITEM

FM

1.IF adjustment

2. FM band

3. Tracking

SG SETTING

10.7MHz

87.5MHz 1kHz, +/-22.5kHz dev.

108MHz

1kHz, +/-22.5kHz dev.

90MHz

1kHz, +/-22.5kHz dev.

106MHz

1kHz, +/-22.5kHz dev.

Repeat step 3

TUNER SETTING

108MHz

87.5MHz

108MHz

90MHz

106MHz

ADJUSTMENT POINT

L7

L3

PVC CT003

L2

PVC CT002

ADJUSTMENT

Adjust for max.output.

Adjust for max. output

and best waveform.

AM

1. IF adjustment

2. AM band

3. Tracking

455 kHz

1kHz, 30% mod

530kHz

1kHz, 30% mod

1710kHz

1kHz, 30% mod

600kHz

1kHz, 30% mod

1400kHz

1kHz, 30% mod

Repeat step 3

1710kHz

530kHz

1710kHz

600kHz

1400kHz

T2

L6

PVC CT004

AM ANT COIL

PVC CT001

Adjust for max.output.

Adjust for max. output.

Adjust for max. output

and best waveform.

5

ST-C150

4 EXPLODED VIEWS AND PARTS LIST

12 12

1 1

12 12

4 4

2 2

12 12

3 3

12 12

1010

9 9

EXPLODED VIEW - 1

5 5

14 14

5 5

14 14

7 7

9 9

15 15

13 13

6 6

13 13

14 14

6 6

14 14

11 11

12 12

2 2

8 8

7 7

9 9

12 12

4 4

12 12

9 9

12 12

15 15

12 12

3 3

12 12

1 1

12 12

9 9

29 29

3 3

1 1

13 13

16 16

3 3

14 14

EXPLODED VIEW 2

32 32

8 8

11 11

18 18

28 28

21 21

22 22

19 19

1010

23 23

11 11

2 2

30 30

35 35

27 27

32 32

11 11

12 12

26 26

31 31

34 34

25 25

24 24

20 20

7 7

9 9

6 6

5 5

4 4

17 17

31 31

33 33

15 15

6