Sylvania FDR-90E, E6550UD Schematic

SUPPLEMENT

SERVICE MANUAL

This service manual shows only the differences between
the model FDR-90E and the original model DVR90DE.
All other information is described in the service manual
of the model DVR90DE.

DVD RECORDER

FDR-90E

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all
Funai Equipment. The service procedures recommended by Funai and
described in this service manual are effective methods of performing
service operations. Some of these service special tools should be used
when and as recommended.

It is important to note that this service manual contains various CAUTIONS
and NOTICES which should be carefully read in order to minimize the risk
of personal injury to service personnel. The possibility exists that improper
service methods may damage the equipment. It also is important to
understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE.
Funai could not possibly know, evaluate and advice the service trade of all
conceivable ways in which service might be done or of the possible
hazardous consequences of each way. Consequently, Funai has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a
service procedure or tool which is not recommended by Funai must first
use all precautions thoroughly so that neither his safety nor the safe
operation of the equipment will be jeopardized by the service method
selected.

TABLE OF CONTENTS

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1

Schematic Diagrams / CBA’s and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1

Different parts from original model (DVR90DE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1

Manufactured under license from Dolby Laboratories. "Dolby" and
the double-D symbol are trademarks of Dolby Laboratories.

Audio Block Diagram

)

DIGITAL

AUDIO OUT

AUDIO-L

OUT1

JK4104

OPTICAL

FIBER OPTIC

TRANS MODULE

IC4301

COAXIAL
(

AUDIO OUT

JK4301

BLOCK DIAGRAM

AUDIO-L

OUT2

JK4105

AUDIO-R

OUT1

AUDIO-R

OUT2

JK4104

AUDIO-L

IN1

AUDIO-R

JK4105

IN1

TU4001

SIF OUT

14

TO SYSTEM CONTROL

BLOCK DIAGRAM

JK4602

AUDIO-L

IN2

AUDIO-R

IN2

1

REC AUDIO SIGNAL PB AUDIO SIGNAL

Q4301

WF7

BUFFER

)

OP AMP
(

IC4421

WF6

Q4425 Q4424

TO

1

OP AMP

2

MUTE-ONDRIVE

A-MUTE

SYSTEM CONTROL

BLOCK DIAGRAM

Q4426

7

OP AMP

6

MUTE-ON

)

L-CH

MTS/SAP AUDIO
(

SIGNAL PROCESS

IC4041

425

IN1TUIN2

(L-CH)

(AUDIO INPUT SELECT)

IC4164

)

OP AMP
(

IC4166

)

OP AMP
(

IC4165

OP

OP

21

MTS/SAP

AUDIO

SIGNAL

PROCESS

R-CH

30

29

3

2

AMP

1

2

AMP

1

(R-CH)

SUB-SCL

24 27

111514

IN1TUIN2

13

6

OP

AMP

7

6

OP

AMP

7

SUB-SDA

AUDIO(L)-IN2

AUDIO(R)-IN2

88

10 10

CN4104 CN4601

9 10

SW CTL

AV CBA JACK CBA

Q4161

Q4162

AUDIO-SW2

AUDIO-SW1

18 18SPDIF

CN6 CN4502

SPDIF

AUDIO-OUT(L)

AUDIO-OUT(R)

25 25

27 27

CN7 CN4401

DVD-AUDIO-MUTE

DVD-AUDIO-IN(L)

DVD-AUDIO-IN(R)

19 19

23 23

21 21

L-CH

IC13 (AUDIO D/A CONVERTER)

BCK

1-1-1

7

8

R-CH

123

DATA

LRCKMDMC

TO DIGITAL

SIGNAL

11

MUTE

PROCESS

BLOCK

AUDIO D/A

CONVERTER

131416

DIAGRAM

TO SYSTEM CONTROL

BLOCK DIAGRAM

1

5

R-CH

L-CH

AUDIO A/D

CONVERTER

IC12 (AUDIO A/D CONVERTER)

131415

SCK15ML

LRCK

BCK

DATA

16

SYSCLK

DVD BE MAIN CBA

E6550BLA