SONY VTXD800U - Service Manual Immediate Download

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Service Manual

SERVICEMANUAL

DIGITAL RECEIVER

MagellanII

MagellanIICHASSIS

CHASSIS

MODEL

COMMANDER

DEST

VTX-D800U

RM-X800

UK

VTX-D800N

RM-X800

FINLAND/SWEDEN

VTX-D800E

RM-X800

ESP

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Service Manual

TABLE OF CONTENTS

Safety Warning.

....................

3

Tools Required.

....................

3

1

Dissassembly

....................

4

1.1

Cover Removal.

....................

4

1.2

Front Panel Removal.

....................

4

1.3

B Board Removal.

....................

5

1.4

Chassis Removal.

....................

5

2

Service Mode [TT Mode]

....................

6

2.1

Special Key Sequence

....................

6

2.2

Special Remote Commander Data Code

....................

6

2.3

Exiting TT Mode

....................

6

3

Entering the TT Command Number

....................

7

3.1

Cancelling a Command Entry

....................

7

3.2

Example

....................

7

4

List of TT Commands

....................

8

5

Power Supply

....................

11

5.1

Power Supply Detailed Description

....................

12

6

Technical Specifications

.

....................

1

5

7

Device descriptions.

....................

19

8

Diagrams

8.1

Block Diagram.

....................

21

8.2

B board PWB layout.

....................

22

8.3

B board circuit diagram.

8.3.1 Multimedia Processor & Clock Generator ....................

23

8.3.2 Front Panel & Reset

....................

24

8.3.3 Power Supply

....................

25

8.3.4 Audio DAC & Smartlink Switch

....................

26

8.3.5 AV Switch & SCART

....................

27

8.3.6 Tuner NIM

....................

28

9

Exploded View

.

....................

29

10

Electrical Parts List.

....................

30

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Service Manual

Dangerously high voltages exist on the Power Supply Unit (PSU) PWB (See Fig 1).

FOR THIS REASON,THE RECEIVER MUST ALWAYS BE DISCONNECTED FROM THE MAINS SUPPLY

BEFORE ANY WORK DETAILED IN THIS MANUAL IS CARRIED OUT.

CAUTION !!!

Anti-static precautions should be taken when handling the PWB. Once removed from its fixings, the PWB can

become flexible. Care should be taken to avoid damage to the PWB or components.

All fixings must be replaced correctly for correct performance and continued safety compliance.

Tools Required

Safety Warning

Caution High Voltage

Fig. 1

Philips Screwdriver

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Service Manual

Remove the foot by releasing the clips circled and easing the foot carefully away from the unit. Remove the 2

screws located at the rear of the unit (shown arrowed). Lift the front of the cover slightly and slide towards the rear

of the unit until it is clear. Reassembly is the reversal of removal.

1.1 Cover Removal

1.2 Front Panel Removal

Remove the cover as indicated above. Carefully unhook the front panel locating clips from the chassis, pull the

front panel gently forward and lift clear.

Clip located

on both sides

of Front panel

Lift cover

gently at this

point.

1 Dissassembly

==>

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Service Manual

Remove the cover and front panel as indicated in [1-

1] and [1-2]. Disconnect CN600 power cord and remove from

unit. Remove the 1 Philips screw from the rear panel. Remove the 3 Philips screws from the circuit booard. The B

board can then be lifted clear of the chassis.

[ 1.3 ] B Board Removal

==>

CN600

Screw

Screws

To remove, lift the front of the chassis slightly to clear the stops and slide forward out of the bottom cover.

[ 1.4 ] Chassis Removal

Stops