SAMSUNG SC-7400 Service Manual Alignment & Adjustment

1. Alignment and Adjustments

1-1 Instruction

Samsung Electronics 1-1

J701

J706

J704

J702

J703

J705

J707

TNR201

CN501

D702

ANT101

SW501

J202

R427

J710

R534

J505

J503
J504

J502

J509

J511

J501

J510

J506

J605

J604

CW301

Q408

Q406

R116

R210

R518

R146

R425

D511

J402

J401

J404

J411

J410

J406

J409

J407

J408

J412

J405

J403

Q201

F101

Q501

Q410

Q402

Q401

Q202

Q404

Q405

Q502

Q701

Q105

Q407

Q504

Q505

Q103

Q104

R707

R529

R528

R117

R212

R706

R414

R603

R604

R601

R602

R221

J708

J603

J601

J606

J709

J602

R114

R424

R502

D502

D403

D107

D507

D106

IC503

Q101

IC501

Q702

CF102

CF101

C611

J303

J307

J304

J305

J308

IF101

SV103

SV101

SV102

IC102

IC101

C108

C143

J118

J112

J110

J116

J111

J101

J104

J102

J109

J115

J113

J114

J108

J117

J106

J105

C501

C419 C418C410 C411

C407

C406

C422

C506

C616

C504

C609

C617

C107

C137

C138

C139

C134

C133

C117

C122

C115

C120

C140 C105

L101

D104

D103

ZD502

ZD401

D202

D516

D401

ZD403

ZD501

D203

D105

D201

D101

IC502

R705

IC601

J214

J212

J209

J208

J211

J201

J207

J210

J205
J206

J204

J213

J203

CN601

XT501

R121

R511

R512

R513

R510

R422

R519

R126

SC-7400 MAIN PCB TOP SILK 2001.08.31.SC-7400 MAIN PCB TOP SILK 2001.08.31.

A2

ENAUX

A0

ENCLK

A1

FADER

FM ONLY

V-CUT

V-CUT

V-CUT

V-CUT

DIPPING

M010831

IC401

Dev75KHz 60dB

R121 LEFT PIN

R121 LEFT PIN

0 +/-10mV

VOLT METER

0 +/-10mV

R121 2 POINT : DC VOLT METER

FM DETECTOR COIL

(IF101)

98MHz

FM DET COIL Adjustment

200KB

SVR101

60dB -> 14dB

-3dB

0dB

14dB Adjust

Adjust is SVR101 : -3dB Limiting Sens

SEMI-VR(200K ohm)

(SVR101)

98MHz

FM Search Level Adjustment

O/SCOPE

O/SCOPE

O/SCOPE

O/SCOPE

VTVM

VTVM

VTVM

VTVM

-

-

R

L

20KB

SVR102

Dev75KHz 60dB

Adjust is SVR102 : Sepí MAX

Adjust is SVR103 : FREQ. Counter
19KHz +/- 50Hz (IC103 13pin)

SEMI-VR(20K ohm)

(SVR102)

98MHz Stereo

FM Stereo Separation Adjustment

10KB

SVR103

MONO

G

G

G

G

G

G

G

G

G

IC103 13pin

FM SET

FM SET

FM SET

FM SET

19KHz

FREQ. COUNTER

FM SSG

FM SSG

FM SSG

FM SSG

SEMI-VR(10K ohm)

Pilot(19KHz)

(SVR103)

Point

Point

Point

Point

Adjustment

Adjustment

Adjustment

Adjustment

98MHz MONOSSG FREQ.

SSG FREQ.

SSG FREQ.

SSG FREQ.

FM Stereo Adjustment

1-2 Samsung Electronics