Sanyo TRC3549 Manuale utente

SERVICE MANUAL Mini Talk-Book TRc3540 (GENERAL )

PRODUCT CODE No.

14253701

LSpecifications

Power Source

DC ................................................................................. 3V

(UM-3, HP7, AA Cell, Mignozelle, R6) x 2

Output Power (Max. music power) ............................. 200mW

Output Power (10% Distortion) ................................... 140mW

Current Consumption (at Vol. Min.)

Record mode ......................................................... l15mA

Playback mode ...................................................... llOmA

Fast Forward mode ............................................... 140mA

Rewind mode ......................................................... 140mA

Recording System ..................................... DC Bias, 1/2 track

Erasing System ............................................. Magnet Erasing

Tape Speed (at tape start begin) ................ 3.09cm/sec. &5%

Torque

Playback mode ............................. ..... more than 40g-cm

Fast Forward mode ............................. more than 45g-cm

Rewind mode ....................................... more than 40g-cm

Specifications and design are subject to change without notice.

Wow &Flutter ........................................................ 1.5% RMS

Warning Tone Signal .......................................... 1.2- 3.2kHz

Fast Forward Time ............................. 620sec. (with MC-40N)

Rewind Time ...................................... 135sec. (with MC-40N)

Frequency Response (Overall) ................... 400Hz -4,000Hz

Erase Ratio (Overall) .............................................. ...... 40dB

Signal to Noise Ratio ...................................................... 26dB

Harmonic Distortion (K3) ................................................ 13?Z0

Hum &Noise (at Vol. Min.) ........................................ –55dBs

Crosstalk

Track to Track ........................................................... 45dB

Terminal Impedance

Earphone ...................................................................... 8f2

Dimensions ................................... 66(W) x135(H) x29(D)mm

Weight (w/o battery) ........................................................ 165g

REFERENCE No. SM570918

DISASSEMBLY

GENERAL REMARKS

●

Before disassembling the unit, spread asoft rubber mat

or acloth on the workbench to avoid scratches and

grease stains.

Do not use amaterial which is likely to cause static elec-

tricity because the transistors and ICS may be easi Iy

damaged by it.

When mounting the P. C. Board, confirm that the leads,

resistors, capacitors, etc., do not contact the function

mechanism such as gear or belt. Also refer to the Ex-

ploded Views.

Reassemble the unit, noting the kinds of screws, the sol-

dering and arrangement of the leads. Refer to “Circuit

Diagram and Exploded Views” for correct assembly.

Before disassembling the unit, take out the cassette tape

and the batteries

CABINET BOTTOM REMOVAL

1. Remove six screws (1 -6) fastening the Cabinet Bottom

and detach the Bottom Cabinet by lifting it.

Bottom Cabinet —x o

2. Carefully detach the Bottom Cabinet because three leads

(black, red and white) are connected from the battery

terminals on the Bottom Cabinet to the P. C. Board. If nec-

essary, unsolder their leads from the P. C. Board.

3. Reassemble in reverse order.

P.C.BOARD REMOVAL

1, Detach the Bottom Cabinet by following the instructions

for it and unsolder the Speaker reads (white and blue),

motor leads (red and white) and power switch leads (or-

ange and blue) from the P.C. Board.

2. Remove the screw (7) fastening the P. C. Board and detach

the Top Cabinet by raising it in the direction of the arrow.

P.c.

Top Cabinet

3. Remove the P.C. Board by lifting it in the direction of the

arrow noting the lead wires.

4. Reassemble in reverse order.

CASSETTE MECHANISM REMOVAL

1. Open the Cassette Compartment Lid and removal the

screw (8). Then detach the P. C. Board by following the in-

structions for it.

Compartment Lid

2. Remove four screws (9 -12) fastening the Mechanism.

12 Cc,. \

Cassette

3, Detach the Mechanism by lifting it in the direction of the

arrow noting the lead wires.

4. Reassemble in reverse order.

–2–

ADJUSTMENT PROCEDURES

GENERAL REMARKS

●Before the adjustments, wipe offstains onthe tape con-

tatting surfaces of the parts and the belt with asoft cloth

soaked in alcohol. Trouble may occur because of oil and

grease stains.

●Carefully handle the belt because grease easily attaches

to it. Then, check the used rubber parts. If the rubber has

deteriorated or is scratched, replace the parts with new

ones.

EQUIPMENT REQUIRED

●Vnlfvf

●Frequency Counter

●DC Constant-voltage Regulator

●Dummy Load (4Q)

●Test Tapes

tFor Tape Speed Adjustment:

●Using Tape ..... .. Mini-cassette Tape of 18P thick

(A-BEX SSC-1582)

●Frequency of Recorded Linear Sweep Signal

. . . .............................. 4,575 -3,925Hz

●Recording Level ....................................... –lOdB

●Recording Time ................ ..................... 84.5sec.

●Recording Tape Speed 4.75cm/sec. (1-7/8 ips. )

iFor Head Azimuth Adjustment

●Using Tape Mini-cassette tape of 18P thick

(A-BEX SSC-1584)

●Recording Signal ..... .................................... 4kHz

●Recording Level ....................................... –lOdB

●Recording Tape Speed . . 4.75cm/sec. (1-7/8 ips. )

TAPE SPEED ADJUSTMENT

1. Connect afrequency counter to the earphone jack and

play back the above described test tape for the Tape

Speed Adjustment.

Frequency Counter

3,000!iZ&5~o

IDummy Load 4Q

EARPHONE

HEAD AZIMUTH ADJUSTMENT

1. Connect aVTVM to the earphone jack and play back the

above test tape for the Head Azimuth Adjustment.

VTVM (Max.)

IDummy Load 4fl

EARPHONE

Turn the azimuth adjusting screw until the VTVM reads

the maximum point.

Adjustment

RecordlPlay Head

/Screw

3. After the adjustment, secure the screw with paint or glue.

2. Detach the Battery Compartment Lid and turn the poten-

tiometer [P501) until the frequency counter reads

–3–

–4–

CABINET PARTS LIST

Ref.

No. Part No. Description Q’ty

PACKAGE 6202209982

6202080512

6202193335

8201486216

6201527452

ACCESSORIES

6200227186

6202209975

CABINET 6201156946

6200028790

;6200033244

34070653906

4 6202192499

56202192462

6 6202191829

7 6202191782

8 6202191751

9 6202191744

10 6201223680

11 6201226041

12 6201230857

13 6201229004

14 6201229295

15 6201244647

16 6201245103

17 6201249903

18 6201390469

19 6201393798

20 6201084625

21 6201226652

31 6202193014

32 6202192949

41 4110998400

42 4120443105

43 4111606304

44 4110861803

NOTES:

Inner Carton

Pad, Styrofoam

Pad, Plain,Unit

Poly Cover

Serial No. Sheet

Micro Cassette

Instruction Manual

Adhesive Sheet

Speaker

Microphone [MIC 1]

LED SLP-135B-51 [D201]

Assy,Cabinet, Bottom

Assy,Lid,Cassette

Cabinet, Top

Lid, Battery

Bracket-M, Spring

Stopper, Lid, Cassette

Holder Microphone

Screw Pan Head M2.0X4.O

TP Screw Ml .7X3.5

Screw

Screw +M1.7X5.O

Cushion

Sheet

Spring Lid Cassette

Spring Earth

Knob Volume

Screw +M1.7X3.O

Assy,PCB,Amplifier

PCB,LED [D201]

SCR PAN PCS 1.4X1.6

SPECIAL SCREW

Pin SPRING 1.6X18

WASHER SPR 2

1, Parts order must contain Model Number, Part Number and De-

scription.

2. Ordering quantity of screws and resistors must be multiple of 10

pcs.

–5–

:4=$4+-51

51 —

23 4

36 —

53 A

--c!!D

C&22

23 -A ,&

—24

JJ-

52 —

q“ 4ji/ji/3

+- 25 %20

@2-27

~23

-----

–6–

MECHANISM PARTS LIST

Ref.

No. Part No. Description Q’ty

“L

MECHANISM

NOTES:

6201257922

6200164962

6200233514

6202097428

6202192529

6202192536

6202193052

6200233989

6200827935

6200833400

6200839211

6201193541

6201226102

6201226133

6201226225

6201226911

6201237656

6201240498

6201244847

6201251081

6201251371

6201251548

6201253399

6201264722

6201273113

6201286243

6201297737

6201300529

6201300543

6201301106

6201371017

6201371086

6201371345

6201372861

6202203676

6201390452

6201390551

6201390605

4110156800

4110157609

4110009304

4110160203

4110194505

4110886509

Lug

Leaf Switch [S2]

Erase Head [HD2S4]

Assy, Motor,3V,0.3W

Assy,Chassis,TRC3540

Assy,Lever,Record

Sheet,lnsulator

RIP Head

Reel Take UP Assy

Arm Complete

Plate Lock Assy

Spacer

Screw +M2.0X3.O

Screw +M2.0X2.O

Screw +M2.0X6.O

Screw +M1.7X4.O

Sheet

Cushion Motor

Cushion

Washer M1.6X3.5X0.2

Washer M1.6X4.0X0.13

Washer M1.7X4.OXO.25

Washer

Reel Supply

Gear Idler

Belt Drive

Plate Brake

Plate Slide

Lever Erase Head

Plate Lock Record

Spring Azimuth

Spring Slide

Spring Brake

Spring

Spring,Tens

Sprinr2

Sprinj

Spring

RING E1.2

RING E1.5

RING E2

RING E2,5

SCR PAN PCS 1.4X3

WASHER F2X4.3X0.4

1. Parts order must contain Model Number, Part Number and De-

scription.

2. Ordering quantity of screws and resistors must be multiple of 10

pcs.

‘L

–7–

P.C.BOARD PARTS LIST

Ref.

No. Part No. Description Q’ty

ASS Y,PCB,AMPLIFIER

P501

VR101

Iclol

Q1OI

Clol

C102

C103

C104

C105

C106

C107

C108

C109

Cllo

Clll

C112

C113

C114

C115

C116

C201

C501

C502

R101

R102

R103

RI04

R105

R106

R107

RI08

R109

R11O

Rlll

R201

R202

R501

R502

R503

R504

6202193014

6201227840

6200192026

6200208512

6202185392

6202063508

6201385991

6202065342

6200060233

4091493307

4050000904

4030677201

4030746303

4031392608

4030017601

4030011203

4031392707

4030012309

4031392905

4030015102

4031794006

4031353500

4040475002

4040126607

4031918709

4031354101

4031096407

4031219509

4010278305

4010247004

4010247400

4010272105

4010277209

4010271306

4010273201

4010247400

4010260409

4010272600

4010264308

4010263905

4010270309

4010269907

4010262700

4010262304

Assy, PCB,Amplifier

Eyelet

1P Jack 3.6 (EARPHONE JACK)

EXT. Power Socket

VR,Semi 3K N

Switch, Slide,2K-4P-2T (R/P)

Contact Switch (FF/REW SW)

Spring, Plate (MUTE SW)

Rotary Volume 20KC

IC LA4165M

TR DTAI 14YS

MT-COMPO

CERAMIC

ELECT

CERAMIC

ELECT

CERAMIC

ELECT

CERAMIC

ELECT

CERAMIC

CARBON

MT-COMPO 0.033U J50V

0.033U J50V

560P K50V

0.47U M50V

4700P M16V

0.022U N6V

lU M50V

O.OIU N16V

2.2U M50V

2200P M16V

220U M4V

220U M6,3V

22U M4V

lU M50V

470U M6.3V

10U M50V

O.lu z50V

820 JA l/6W

lK JA l/6W

10K JA l/6W

56 JA l/6W

7,5K JA 116W

510 JA l/6W

560K JA l/6W

10K JA l/6W

27 JA 116W

27 JA l/6W

5.6K JA l/6W

3,3K JA l/6W

330 JA 1/6W

47K JA l/6W

4.7K JA 116W

300 JA l/6W

3.6 JA l/6W

NOTES:

1. Parts order must contain Model Number, Part Number and De-

scription.

2. Ordering quantity of screws and resistors must be multiple of 10

pcs

–8–

IC &TRANSISTOR

TRANSISTOR

DTA114YS

FRONT VIEW BOTTOM VIEW

TERMINAL NAME I

B-+ BASE

C+COLLECTOR

E+EMITTER

LA4165M TOP/SIDE VIEWS

112

IC BLOCK DIAGRAM

LA4165M BLOCK DIAGRAM

–9–

EXT .JP%WER

SOCKET

BLACK

—

‘!”Iwb= %?

(

kJ9

RED —

mo?

o :. -cloB* @vv@R503

@i*m@ _

:?? mF’””

I—“AA” CELL X2

IPCB LED Clol I I I II -L /

&,-

IaiMOTOR I

—--i I

MUTE

SWITCH +

IS5 IL

wa IIW7

WHITE BLUE

+–

SPEAKER L

44-

WI GRAY

HDI-I

R/P HEAD

HD2-I

ERASE HEAD POWER SW

SIO02 Slool

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