Panasonic MD0004056C2 Bedienungsanleitung

http://servis-manual.com/

Service Manual

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ORDERNo.MD0004056C2

CDStereoSystem

SA-AK48

Colour

(S)........SilverType

Areas

(E)........EuropeandRussia.

(EB)......Great Britain.

(EG)......Germany,Franceand Italy.

TAPESECTION :AR2 MECHANISM SERIES

CDSECTION :RAE0152Z-MTRAVERSEDECKSERIES

SYSTEM:SC-AK48

Specifications

•AMPLIFIERSECTION

RMS poweroutput

THD 10%,bothchannelsdriven

(HIGH)40Wperchannel(6 )/(MID)40Wperchannel(6 )/(LOW)120Wperchannel(6 )/(TOTAL)200Wperchannel(6 )

/Inputsensitivity

AUX 250mV

Inputinpedance

AUX 13.9k

•FM TUNERSECTION

Frequencyrange 87.50-108.00MHz/(50kHzsteps)

Sensitivity 1.8μV(IHF)

S/N26dB 1.5μV

Antennaterminal(s) 75 (unbalanced)

•AMTUNERSECTION

Frequencyrange 552-1629kHz(9kHzsteps)

Sensitivity

S/N20dB(at 999kHz) 560μV/m

•CASSETTEDECKSECTION

Tracksystem 4track,2channel

Heads

http://servis-manual.com/

12.1ErrorDetectionforCassetteMechanism

block

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No. ErrorError

Display

ProblemCondition

1MODESWdetection errorH01 Faultyoperation of cassette mechanism./Faultycontactor short-circuit ofmechanismmodeswitch(S951,

S971)

2RECINHSWdetection

error

H02 Recording notpossible./Faultycontact or short-circuit ofRECINH switch(S974,S975)

3HALFSWdetection errorH03 Playbackcannotperform./Faultycontact or short-circuit ofHALFswitch(S952,S972)

4ReelPulsedetection errorF01 Thetapeadvancesslightlyandthenstops./Faultyreelpulse,faultyholedetect IC(IC951,IC971)

5TPSabnormal F02 Cassette deckwillnotperformTPSfunction./FaultyplaybackEQ/recording amplifierIC (IC1101)

http://servis-manual.com/

12.2ErrorDetectionforCD/Changerblock

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No. ErrorError

Display

ProblemCondition

1RESTSWdetection errorF15CDdosenotfunction./Thiserror occurswhentheOptical PickUpRESTSW(S701) is

notdetectedwithinthespecifiedtime(about8seconds)

2CDtrayopensautomaticallyF16CLAMP switch(S4)NG(Check&Replace)

3Doesnotstartup when/“TUNE/TIMEADJ^” button

is/pressed

F17BOTTOM switch(S5) NG (Check&Replace)

4Transmissionerror betweenCD/servoLSIand

micon

F26CDdoesnotfunction./Thiserror occurswhenthePOWERisON for theCDblockand

anerror isdetectedafterthetransmission hasstarted.

5Startupfailsevenwhenyou insertCDor the

selecteddisctraydoesnotopen

F27Tray1detect switchor Tray2detect switchNG (Check&Replace)

6CannotinsertCDF28Tray1detect switchNG (Check&Replace)

7CannotejectCDF29CheckifDiscisstuck.Tray2detect switchNG (Confirm&Replace)

8CDTrayclosesH15 CDdisctraydetectswitchNG (S3)(Check&Replace)

http://servis-manual.com/

12.3ErrorDetectionforCassetteMechanism

block

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No. ErrorError

Display

ProblemCondition

1POWERAMPoutput

abnormal

F61 WhenPOWERisswitchon,powerbecomeoffautomatically./Duringnormaloperation,ifDCDET becomeL,PCNT

shall becomeLandtheerror displayontheleftshall bedisplayed(IC500)

8765

1234

NBOUT

GND

NAOUT

VREF

GND

Vcc

BIN

AIN

14 15 16 17 18 19 20

13 12 11 10 9 8 7

21 22 23 24 25 26

6 5 4 3 2 1

RSTIN

IN3

IN4

VREF

Vcc

GND

PVcc2

PGND2

D4+

D3+

/RST

IN2

PC2

IN1

GND

PVcc1

PGND1

D1+

D2+

1616

1212

1516171819202122232425262728

1413121110987654321

PDE

PDF

Vcc

PDA

PDB

LPD

RFIN

CSBRT

CEA

BDO

LDON

GND

FBAL

TBAL

VREF

FEN

FEOUT

TEOUT

TEN

ENV

OFTR

PDOWN

/RFDET

TP36

TP35

C737

0.1

C736

0.1

TP38

TP37

M702

SPINDLE

MOTOR

M701

TRAVERSE

MOTOR

AB CD

C735

0.1

C734

10V220

BADC BA

R736

100

R729

3.9K

R728

3.9K

C739

1500P

R727

3.9K

R749 4.7K

C752

1000P

C738

0.01

R724

18K

R735

100

R723

6.8K

R731 6.8K

R715

C715

2700P

R725

390

C714

6.3V100

C713

0.1

C712

0.1

C711

0.1

R708

22K

R707

39K

TP42 TP40

C749

2200P

R702

10K

C747

180P

R744

120K

C710

120P

R705

150K

TP33 TP32

R704

R706

IHGFEDC

C742

0.027

R701

4.7

C701

6.3V33

CN701

(RF)

TP29 C716

820P

TJ701

DCB A

C751

0.1 C750

0.1

VREF

C702

0.1

C706

2700P

C707

0.027

C704

0.1

C703

6.3V100

Q701

2SA1037AKSTX

LASER POWER

DRIVE

IC701

AN8839NSBE2

SERVOAMP

IC703

AN8739SBE2

FOCUS COIL/

TRACKING COIL/

TRAVERSE MOTOR/

SPINDLE MOTOR DRIVE

TRACKING

COIL

FOCUS

COIL

0.1

680P

0.1

0.047

Vcc

PDF

PDE

GND

VREF

LPD

GND

T+

F+

7.7V

CD SERVO CIRCUIT

SCHEMATIC DIAGRAM

NOTE:

The number which noted at the connectors on the schematic diagram as

"SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"

indicates the schematic diagram serial number located on the left corner in the schematic diagram.

OPTICAL PICKUP

1.6V 3.3V1.6V 1.6V 1.6V (0.2V)

0V (2.3V)

2.7V (1.4V)

0.9V 0.7V 1.9V 1.6V 0V (3.2V)

1.6V 1.6V 1.6V 1.6V 1.6V 1.6V 1.6V 1.6V 0V 3.2V

(0V)

(0.4V) (0.6V)

0V 0V 0V 0V 0V 7.5V 7.5V 1.6V 1.6V 1.6V

1.6V1.6V3.2V1.6V1.6V (0V)

0V 0V 0V 0V

(0.1V) (0.7V) (0.7V) 7.5V

PLAY 0.1V

P-P

2ms. 0.1V/DIV.

PLAY

2ms. 0.1V/DIV.

0.3V

P-P

PLAY

0.8V

P-P

0.5*s. 0.2V/DIV.

3.3V

7.4V

1.1V

(2V)

3.2V (2.3V)

2.7V

3.3V

(3V)

:POSITIVE VOLTAGE LINE :CD PLAYBACK SIGNALLINE

62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

2122232425262728293031323334353637383940

BCLK

LRCK

SRDATA

DVDD1

DVss1

MCLK

MDATA

MLD

SENSE

/FLOCK

/TLOCK

BLKCK

SQCK

SUBQ

DMUTE

STAT

/RST

SMCK

CSEL

TRV

TVD

ECM

ECS

KICK

TRD

FOD

VREF

FBAL

TBAL

RFENV

VDET

OFT

TRCRS

/RFDET

BDO

LDON

PLLF2

DSLF2

WVEL

ARF

IREF

DRF

DSLF

PLLF

VCOF

AVDD2

AVss2

EFM

PCK

VCOF2

SUBC

SBCK

Vss

X1 IN

X2 OUT

VDD

BYTCK

/CLDCK

FCLK

IPFLAG

FLAG

CLVS

CRC

DEMPH

RESY

IOSEL

/TEST

AVDD1

OUTL

AVss1

OUTR

RSEL

IOVDD

PSEL

MSEL

SSEL

191817161514

132 4 5 6 7 8 9 10 11 12 13

TP22

TP23

TP21

C727

50V1

C728

50V1

C725

1000P

C726

1000P

R718

R717

C754

470P

C730

0.1

C731

6.3V220

R721

100

C732

6.3V220

C733

0.1

TP20TP18

C753

470P

CN702

C743

0.1

TP17TP14TP13TP12TP8TP7TP6TP4TP2

IHGFEDCBA

S701

(REST)

TP16

C745

1000P

GFEDCBAABC D EFGHI

R712

220

C718

0.22

C717

0.1

C744

8200P

R709

68K

R741 47K

R711

82K

C722

10P

X701

(16.9344MHz)

C721

10P

C724

0.1

C723

10V220

IC702

MN662790RSC

SERVO PROCESSOR/

DIGITAL SIGNAL PROCESSOR/

DIGITAL FILTER/

D/A CONVERTER

+B(2)

Rch OUT

/RST

STAT

SUBQ

SQCK

BLKCK

P.GND

MDATA

MCLK

+B(1)

D.GND

LD SW

A.GND

Lch OUT

RESTSW

R753

TP1

TP19

TP15

R742

220K

SPEED

MLD

To FL CIRCUIT(CP606) on SCHEMATIC DIAGRAM

SCHEMATIC DIAGRAM

R714

7.5V

3.3V

3.2V

3.3V

3.2V

0V(3.1V)

3.2V

1.6V

3.2V(0V) 1.6V

1.6V

3.2V(0V)

0V(3.2V) 0V

1.6V

(1.2V)

1.6V

3.2V

1.6V

3.2V

1.5V

3.2V

1.5V

PLAY

1kHz, 0dB

2.2V

P-P

0.8V

P-P

F=16.9344MHz

PLAY

0.8V

P-P

PLAY

3.2V

F=75Hz

PLAY

2ms. 0.1V/DIV.

0.3V

P-P

PLAY 0.1V

P-P

2ms. 0.1V/DIV.

PLAY

3.2V

T 13.3ms.

PLAY

3.2V

T 13.3ms.

0.5 s. 0.2V/DIV.

3.3V

2.1V

P-P

F=16.9344MHz

3.2V

1.5V

1.6V

3.3V

PLAY

3.2V

T 13.3ms.

:POSITIVE VOLTAGE LINE :CD PLAYBACK SIGNAL LINE

4.7K

1 2 3 4 5

Rch

Lch

PLAYBACK

HEAD

DECK1

Rch

Lch

R/P HEAD

ERASE

HEAD

DECK2

CS1101

CS1102

TP2

TP1

R1103

15K

C1101

1000P

R1183

100K

TP6

C1193

1000P

C1103

680P

C1104

0.022

R1101

330K

R1102

100K

TP3

R1182

IC1102

BA7755A

R/P SELECT

VCC GND

C1183

0.47

R1189

4.7K

R1188

R1195

100K

C1102

1000P

C1194

1000P R1104

15K

R1184

100K

C1177

1000P

R1179

2.7K R1181

3.3K

TP172

TP170

TP171

R1180

2.7K

C1181

0.01

C1179

0.01

C1182

50V4.7

C1180

0.01

D1175

MA111TX

C1178

1000P

Q1175

Q1176

R1178

1.2

C1176

0.047

R1177

5.6K

R1176

4.7K

L1201 1

C1185

4700P

C1175

35V220

D1171

MA111TX

R1173

10K

D1172

MA8047MTX

R1174

10K

C1174

50V4.7

D1174

MA8036HTX

C1184

1500P

R1172

330

R1170

C1173

0.01

ERASE CURRENT

CHECK POINT

Q1173

DTC144TKA146

BIAS OSC CONT.(CrO2)

Q1101

2SJ498CDTA

HEAD SELECT

(REC:ON)

Q1103

2SJ498CDTA

HEAD SELECT

(PLAY:ON)

Q1104

2SJ498CDTA

HEAD SELECT

(PLAY:ON)

Q1102

2SJ498CDTA

HEAD SELECT

(REC:ON)

Q1175,1176

2SC2002KTA

BIAS OSC

Q1174

2SC2412KT96R

BIAS OSC CONT.

L1202

47 H

Q1179

2SC2412KT96R

SWITCHING

(BEAT PROOF)

Q1171

2SD1302STA

SWITCHING

(REC:ON)

MECHANISM CONTROL CIRCUIT

SCHEMATIC DIAGRAM-3

TP4

TP5

TP11

TP12

24.9V

((0.1V)) ((0V))

((0V))

0.7V

0.6V ((0V)) ((0V))

((0V))

0.6V 0.9V

((0V))

0.6V

4.8V

((0V)) ((0V))

((7.8V))

10.8V

0.1V

((0V))

((4.4V))

4.5V

((0V))

4.5V

((0V))

((4.4V))

0.1V

14.6V

:TAPE PLAYBACK SIGNAL LINE

:RECORDING SIGNAL LINE

:POSITIVE VOLTAGE LINE

((14.7V))

14.3V

((0.1V))

((0V))

0.1V

((14.7V))

14.3V

((0V))

0.1V

((4.8V)):CrO2

3233343536 29 28

31 27 26 25 24 23 22

47K

7 98654

10 11 12 13 15 16 18

47K

10K

MOTOR

1 32

Q1107

DTC144TKA146

P.B EQ/REC EQ

(CrO2/H.SPEED)

R1131

68K

C1146

16V10

R1146

10K

C1135

1000P

C1139

50V2.2

C1131

820P

C1129

820P

R1125

R1123

10K

R1121

33K

C1133

50V4.7

C1143

50V4.7

R1115

390K

R1117

270K

C1127

0.01

C1123

1800P

C1125

0.047

C1121

50V1

C1119

50V4.7

C1117

50V1

C1147

1500P

R1141

6.8K

R1111

2.2K

C1115

0.033 R1109

4.3K

C1113

6.3V220

R1107

C1111

820P

C1109

16V100

C1108

16V33

C1105

1200P

R1105

270

IC1101

M51167AFP-TB

P.B EQ/REC AMP/

ALC/TPS AMP

C1106

1200P

C1112

820P

R1142

6.8K

R1110

4.3K

R1108

C1114

6.3V220

C1148

1500P

R1112

2.2K

C1116

0.033 C1124

1800P

C1122

50V1

C1120

50V4.7

C1118

50V1

EDC

C1126

0.047

C1136

1000P

R1118

270K

C1128

0.01

R1116

390K

C1130

820P C1132

820P

C1144

50V4.7

R1122

33K

R1124

10K

R1126

C1140 16V10

C1141 50V0.1

R1134 470K

C1142

0.022 R1133

3.3K

C1134

50V4.7

Q1108

DTC144TKA146

P.B EQ/REC EQ

(CrO2/H.SPEED)

R1206

220

Q1203

2SD965RTA

MOTOR DRIVE W1200

Q1206,1207

2SB621RTA

SOLENOID DRIVE

Q1206

Q1207

R1221

2.7

R1225

2.7

C1201

16V100

Q1208

Q1209

R1226

R1227

D1202

MA111TX

D1201

MA111TX

Q1208,1209

DTC114TKA146

SOLENOID DRIVE

AGND

TPS

R/P

REC

ALC

PRE

AGC

OFF

Vcc

R1132 3.3M

SCHEMATIC DIAGRAM-4

((0V)) ((0V))

((0V)):CrO2

((0V))

4.7V ((9.7V))((4.3V))((0V))((5V))((5.2V))((4.9V))((5.1V))((4.8V))((4.8V))((1.1V))((0V))

((9.9V))

((9.4V))((0V))

((0V)) ((4.7V)) ((0V)) ((1.1V))((4.8V)) ((4.8V)) ((5.1V)) ((5.1V)) ((4.9V)) ((5.2V)) ((5.0V)) ((0V)) ((4.1V))((0V)) ((5.1V))((0V))

4.8V

((0V))

((0V)):CrO2

14.6V 14.6V

10V

((0V))

((0.8V))

((0V))

((10V))

((0V))

((9.5V))

((4.5V))

((5V))

:TAPE PLAYBACK SIGNAL LINE:RECORDING SIGNAL LINE:POSITIVE VOLTAGE LINE

((5.4V)) 3.8V4.9V4.9V

4.6V5.0V4.8V4.8V

4.4V 4.5V

((0V))

9.1V

4.9V

4.6V

((5.4V))

5.0V

4.8V

((5.1V))

4.8V

4.5V4.5V

9.3V

8.8V

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