Sony VTX-D800U User manual

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Service Manual
SERVICEMANUALSERVICEMANUAL
SERVICEMANUALSERVICEMANUAL
SERVICEMANUAL
DIGITAL RECEIVER
Magellan IIMagellan II
Magellan IIMagellan II
Magellan IICHASSISCHASSIS
CHASSISCHASSIS
CHASSIS
MODEL COMMANDER DEST
VTX-D800UVTX-D800U
VTX-D800UVTX-D800U
VTX-D800U RM-X800 UK
VTX-D800NVTX-D800N
VTX-D800NVTX-D800N
VTX-D800N RM-X800 FINLAND/SWEDEN
VTX-D800EVTX-D800E
VTX-D800EVTX-D800E
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
6Technical Specifications ..................... 15
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).
FORTHIS REASON,THE RECEIVER MUST ALWAYS BE DISCONNECTED FROMTHE MAINS SUPPLY
BEFORE ANY WORK DETAILED INTHIS 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
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

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Service Manual
2 Service Mode [TT mode]
There are 2 possible mechanisms for starting TT mode on Sony cook STB’s…
2.1 Special key sequence
The following key sequence entered via the standard remote commander for a particular STB can enable TT
mode. This sequence must be entered…
(1) In full, with no deviation from the sequence from first to last.
(2) With the STB in Standby mode at the start of the sequence.
Sequence number Key
1 DIGIT 1
2 DIGIT 9
3 LEFT CURSOR
4 BLUE
Should the STB be in active standby at any time (i.e. during software upgrade) it shall not be possible to enter
TT mode.
2.2 Special remote commander data code
It is considered that the sequence described in section 2.1 above is too complex for automated machinery to
enter reliably without the possibility to confuse the state of the STB, therefore in order to aid manufacture the
SIRCS standard defines that in each remote control category the data code ‘1111111’ (0x7f) shall be reserved
and can be used to enter test mode.
For Cook STB products this SIRCS code shall enter TT mode and is valid in the following conditions…
(1) If the unit is in standby. At which point the STB will come out of standby
(2) When the unit is not is standby and there is no menu displayed
(3) When the unit is not tuning (automatically or manual)
(4) Then the unit is not displaying interactive services
The category code is different between each equipment type (DTT, etc) and the correct category code
must be received according to the equipment type.
The test code shall not be made available on any consumer remote commander equipment.
2.3 Exiting TT mode
TT mode can be exited using one of the following mechanisms…
(1) Removing the power to the STB
(2) Placing the STB into Standby mode
(3) Entering the command ‘0’
After TT mode is exited any changes to the state of the box will still be effective. It is better to force a box
reset post-TT mode.
4
=>
=>
=>

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Service Manual
3 Entering the TT command number
The TT number is entered using the standard digit keys using the category defined for the STB type. Category
codes for equipment types other than this STB’s type must be rejected.
Depending on the type of equipment the number of digits available for commands will vary. Leading zero can
be omitted. If the full compliment of digits is not entered a 3 second time -out period will be required to elapse
before the command is activated. Automated entry mechanisms such as those used during manufacturing
should enter the full compliment of digits in order to avoid the STB and controller getting out of sync.
The following are defined digit lengths for current planned models…
Model Number of digits
VTX-D800U 3
VTX-D800E 3
VTX-D800N 3
3.1 Cancelling a command entry
Entering a ‘0’digit after any other digit entry (thus making the command a multiple of 10) will immediately
reset the display and perform no action.
3.2 Example
VTX-D800U requires 3 digits. Therefore the following sequences would be valid to issue a test command…
Sequence Result
0 ⇒1 ⇒4 Executes command 14
1 ⇒4 ⇒Timeout after 3 seconds Executes command 14
1 ⇒0 Does not execute any command (cancels input)
0 ⇒Timeout after 3 seconds Cancels TT mode
0 ⇒0 ⇒0 Cancels TT mode

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Service Manual
4 List of TT commands
Depending on the STB model the number of digits which are capable of being entered will vary, therefore any
leading zero have been omitted from the TT number defined in the list. Entries should be made according to
the description in section 3.
All commands ending in zero (ie. 0, 10, 20, 30, 40) etc reset the display, cancelling partially entered
commands.
All settings, except those marked “Permanent”, are reset after a power cycle.
TT Name Description Permanent Supported
0 Revert to normal Stops TT mode and returns the STB to normal active
mode.
It does not necessarily revert to the mode of
operation prior to TT mode being entered.
1 STB reset Force the box to reset
This resets the state of the box to just powered on.
STB will power on in standby mode.
2
3
4
5
6 Factory reset &
reboot
Reset all settings to defaults (shipping)
Reboot
Yes
Factory reset Reset all settings to defaults (shipping) Yes
8 Shipping default
& reboot
Set the box to shipping condition
Tune database is cleared
Reboot - Start-up menu will be activated
Yes
9 Shipping default Set the box to shipping condition
Tune database is cleared
Yes
SCART/AV
11 Colour bar ON Enable colour bar output on TV & VCR SCART
hen colour bar is enabled the OSD cannot be seen.
12 Colour bar OFF Disable colour bar output on TV & VCR SCARTS
13 Smart link test Sends a sequence of commands to the AV link bus.
Appendix A shows the sequence sent.
No
14 Scart control off Sets pin 8 on all SCART sockets to 0V No
15 Scart control 16:9 Sets pin 8 on all SCART sockets to 16:9 level No
16 Scart control 4:3 Sets pin 8 on all SCART sockets to 4:3 level No
1
18
19
21
22
23
24
25
26
2
28
29
Common interface

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Service Manual
31 Slot 0 bypass Transport stream is set to bypass slot 0.
This command is effective only when there is no CAM
inserted into slot 0.
32 Slot 0 pass thru Transport stream is set to pass out/in slot 0.
This command is effective only when there is no DVB
compliant CAM inserted into slot 0.
If there is no output/input device then the demux will
not receive a valid transport stream.
33 Slot 1 bypass Transport stream is set to bypass slot 1.
This command is effective only when there is no CAM
inserted into slot 1.
34 Slot 1 pass thru Transport stream is set to pass out/in slot 1.
This command is effective only when there is no DVB
compliant CAM inserted into slot 1.
If there is no output/input device then the demux will
not receive a valid transport stream.
35
36
3
38
39
Software upgrade
41 Upgrade Serial Forces a software upgrade from the serial port
STB will reset after loading & TT mode will be
cancelled
Yes
42 Upgrade Ethernet Forces a software upgrade from the Ethernet port (if
available)
STB will reset after loading & TT mode will be
cancelled
Yes No
43 Upgrade off-air Forces a software upgrade from the current service
A change of service, satellite, etc will be done as
required.
STB will reset after loading & TT mode will be
cancelled
Yes
44 Upgrade Memory
stick
Forces a software upgrade from the Memory stick (if
available)
STB will reset after loading & TT mode will be
cancelled
Yes
45
46
4
48
49 Allow downgrade On next SW update, update the software even if the
version is older than, or the same as, the current
version
Yes
Screen control
51
52
53
54
55
56
5
58
59
I/O
61 LED OFF Sets all LED’s Off

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Service Manual
62 LED ON 1 Sets all LED’s as Colour 1 (Red)
If bicolour LED and Colour 2 ON, it will be Orange
63 LED ON 2 Sets all LED’s as Colour 2 (Green)
If bicolour LED and Colour 1 ON, it will be Orange
64
65
66
6
68
69
Tuner
1 Show tuner status Shows the tuner status display on the OSD
2 Clear tune info Erase the tune database
Sets all channels to an un-tuned state
Yes
3
4
5
6
8
9
81
82
83
84
85
86
8
88
89
91
92
93
94
95
96
9
98
99

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Service Manual
5.0: Power supply
The power supply in an integrated part of the Main PWB, and contains the following functional blocks: -
The main components are:-
1. Mains Plug, Lead and input filter
2. Primary and PWM Controller
3. Transformer and outputs
4. Feedback Circuit
5. Post Regulation Circuits.
Input
Filter
Primary &
Controller
Transformer
32.5V Output
21V Output
5V Output
3.3V Output
Feedback Circuit
+12V
+5V
A
udio
2V5
1V5
The output of this power supply can be measured at the following positions on the PWB, and should be within the
tolerances for each of the supply rails (marked on the PWB):-
Label / Rail JL Position Vnom Vmin Vmax
33v J1 33 30 35
12v G3 12 11.4 12.6
5v J2 5 4.75 5.25
3v3 J3 3.3 3.14 3.46
2v5 F4 2.5 2.3 2.7
1v5 D3 1.5 1.43 1.57

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Service Manual
5.1: Power Supply Detailed Description
The most common failures will be fixed by replacing the following components.
PRIMARY BLAST KIT:- F600, D600, D602 D601, IC600, PH600, IC602, D604.
The components detailed below have the following functions:
Fuse,F600. T1.25A 250V
Always replace the fuse, with the same type and ratings as the one removed.
The fuse will fail if the following occurs:
1. A Primary component fails
2. The input circuit was over stressed
3. or both.
When the fuse fails check the following components: VDR600, C600, L602, D600, D602 D601, IC600.
If all the components look and measure OK, then replace the fuse and apply power, most probable cause is that the
VDR clamped a mains surge and caused the fuse to fail.
If any of the components have failed, then replace as necessary.
VDR600, 620V Metal Oxide Varistor
If this component has failed then the unit has seen a massive mains voltage surge, probably from Lightening or
similar phenomenon. Replace the following components:-
F600
VDR600
C600
L602
If the primary circuit has been damaged in any other way, replace the components as necessary.
If the unit is exposed to a massive mains surge then the feedback components may have been damaged. Also
Check PH600, IC602, D604.
D600 Bridge Rectifier
It is common for bridge rectifier to fail under repetitive mains surge conditions. Check the value of the TH601, if
it is lower than 10 Ohms replace it. TH601 is there to protect the bridge rectifier.
Before you apply power after changing D600 check the other primary parts, if D600 failed F600 should be open
and often the primary blast kit will need to be changed.
IC600 Primary Controller
This IC houses the primary MOSFET and the PWM controller. Check the DRAIN SOURCE characteristic to see if
it’s failed. Often when IC600 fails there are signs of damage to the package. In most cases this will fail short. In
some rare cases the part will fail open. If IC600 fails the primary blast kit needs to be replaced.
D601 Flyback Diode
This diode catches the transformers flyback voltage, and pushes the energy into the snubber circuit. This circuit
will often fail as a result of IC600 failing.
If damaged primary replace the blast kit.

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Service Manual
D602 Catch Diode
The catch diode is in place to help limit the excess voltage to the MOSFET to guarantee the parts ratings. If the
STB is victim to high mains this part is the first to fail trying to protect IC600.
If damaged primary replace the blast kit.
Healthy Drain Voltage on IC600
On a normal scope, it is normal to see a 4KHz jitter on the drain waveform. This is a feature of the PWM IC for
reducing EMI.

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Service Manual
Secondary Operation
The secondary outputs from the transformer will all rise at the same time, 3.3V reach its regulation point first
followed by 5.0V, +21V and 32V.
If the LED is flashing about once every second then a transformer output is shorted to GND or overloaded.
Remove FB610 (33V)
Remove FB607 (+5V)
Remove FB605 (+3V3)
Remove FB608 (+21V)
Once the FB’s are removed check to see if the PSU is stable. The primary waveform will not look ideal as the
previous figure, because the PSU is lightly loaded.
However, the output voltages should be there and stable, if not, check the Feedback loop and primary again.

Service Manual
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6. Technical Specifications for the SONY Cook (FTA DTT) IRD
•Receiver Type DVB Terrestrial Receiver Decoder
•Inputs
RF input 1 x RF input from customer antenna 75Ω
termination
Modulation DVB-T (OFDM)
Input Frequency 470 MHz - 862MHz (CH 21 to 69)
Bandwidth 8 MHz
Symbol Rate <1.5 to 15 Msymbol / Sec
Input Level (BER) QPSK = 2/3 –91.7dBm
VTX-D800U QAM 16/64 -82.8 dBm
VTX-D800E, VTX-D800N QAM 8/16/64 -82.8 dBm
Return Loss > 8dB
Loop-through Loss +3dB power On /StBy
( Loop through is not supported in Power off state)
•Outputs
Video Outputs 2 x SCART Sockets (EN50049-1)
TV - RGB/YC/CVBS + Stereo/Mono
Audio + Slow & Fast Blanking out.
(CVBS + Stereo Audio in)
SmartLink supported on this SCART only
VCR - CVBS+ Stereo/Mono Audio out.
(CVBS + StereoAudio
+ Slow Blanking in)
(CVBS = 1Vpk/pk @75Ohm, Audio In =
500mV @>10Kohm)
Audio Output (Analogue) 1 x Line level output <O/P of VCR
Scart> (1Vrms, < 470 Ohm) – supplied through
Standard 3 pin Jack connector (3.5mm combination
Connector).

Service Manual
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Audio Output (Digital) Optical output :- (Digital PCM output) (Complies
with IEC958 Consumer Mode )
1 x (3.5mm Jack type) – as part of 3.5mm
Combination Connector.
RF Outputs 1 x RF Male Connector, (looped through
DTT Tuner )
Maximum RF loss = < 9dBm
•Signal Processing
Descrambler DVB Common Scrambling
Demultiplexer MPEG2, ISO / IEC 13818-1
Video Decoder MPEG2 MP@ML up to 15Mbps / ETR154
Audio Decoder MPEG1 Layer 1&2 (32, 44.1, 48 KHz Sampling)
ETR154
•CPU/Memory Configuration (expandable as option)
Multimedia CPU DTV Processor / Decoder, NEC EMMA2(Light)
Family (UPD 61120F1-100-JN1) non Macro Vision
MM CPU Main Memory 1x 128Mbit DDR SDRAM (option for 256Mbit)
1 x 64Mbit NAND Flash (option for 128 Mbit)
•Graphics Capability
Bitmap ARGB 8888
Resolution 720 x 576
•Software
Operating System Nucleus +

Service Manual
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User interface Physical (located on the front panel) :-
2 x Channel buttons (Tactile µSwitches)
1 x Standby / On (Tactile µSwitch)
1 x Standby / On Indicator LED (Red / Green)
Software :-
Sony design GUI, based on Sony IDTV#2 DLI
•Remote IR control Sony SIRCs system :-
Commander CAT code = 0x1B7
•PSU Specifications Requirements :-
Input supply = 176 to 264 VAC @ 48 to 52Hz
Output supply :-
Vmin Vnom Vmax I-Min I-Nom Imax
33V Tuner 30 33 35 1 1.5
12V AV-Switch 11.4 12 12.6 30 55
5V Tuner 4.75 5 5.25 200 300
AV-Switch 4.75 5 5.25 60 85
3.3V Tuner 3.15 3.3 3.45 70 200
Emma2L 3.14 3.3 3.46 22 100
Flash 3.15 3.3 3.45 30 90
LED & IR 3.15 3.3 3.45 30 40
Spdiff 3.15 3.3 3.45 8 12
Clock Circuit 3.15 3.3 3.45 7 12
Audio DAC 33.35.5 22 30
2.5V Siel Tuner 2.3 2.5 2.7 210 300
SDRAM 2.3 2.5 2.7 130 263
Emma2L 2.3 2.5 2.7 12 50
1.5V Emma2L 1.43 1.5 1.57 560 900

Service Manual
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Accessories 1 x User Manual – English
1 x SCART Lead
1 x RF loop through Cable
1 x Remote Control Unit (RM-X800)
2 x Batteries (AA)
4 x Unit rubber feet
•Dimensions (Unit ) 215 x 48 x 240 mm
•Dimensions (Carton Box) 401 x 295 x 188 mm
•Weight 4Kg (Boxed), Unit = ~1.5Kg
•Mains Power 176V to 264VAC/48 to 52Hz, 10 W Max
(Fused 1.25Amp on board)

Service Manual
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7. Device Descriptions
TU1000 - BTD-DU606Z
The Front End DTT (digital terrestrial) NIM module receives an off air UHF signal, and converts the digital
content into a parallel transport stream, to be fed into the MPEG decoder IC. This device is I2C controlled.
IC600 -TOP244Y
The TOP244Y is the Main PSU, PWM control IC. Supplied with a rectified AC source, this device produces
a Programmed PWM signal to control the Switch Mode PSU.
IC800 - CXA7002R-T6
The CXA7002R-T6 is an Audio/Video switch. It provides Audio and Video routing from the Digital decoder
source to the TV and VCR SCART connectors CN800 / 801. This device is I2C controlled.
IC700 - XWM8729ED/R
The XWM8729ED/R is a high performance DAC. It supports data input word lengths from 16 to 24 bits and
sampling rates up to 192 KHz. This device is I2C controlled.
IC200 - FS6128-04
This is a monolithic CMOS clock generator, with circuitry that implements a VCXO when an external
resonator is attached. 13.5MHz Xtal is attached - X200.
IC201 - UPD61120F1-100-JN1
The Multimedia microprocessor has the following functions, running main software application, MPEG
transport stream decoding + analogue video output ( internal video DENC ), Master I2C control, digital
audio output ( external Audio DAC required ).
IC300 / IC304 - TC58V64BFTEL, Y
These IC’s are single mount options. Both IC’s are Flash Memory IC’s, IC300 is a 128Mbit part ( 16M x 8
bits ) and IC304 is a 64Mbit part.
IC302 - MT46V8M16TG-75
This device is a high speed CMOS, dynamic random-access memory containing 134,217,728 bits. It is
internally configured as a quad-bank DRAM.
IC604 - PQ015EZ01ZP
This is a fixed 1.5V regulator, its main function is to supply the PWB with a 1.5V supply.

Service Manual
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IC601 - PQ025EZ01ZP
This is a fixed 2.5V regulator, its main function is to supply the PWB with a 2.5V supply.
IC701- LM317LMX
This is a variable voltage regulator, its main function is to supply IC700 with a 5V supply.
List of Specification Sheets included on Service Manual CD
TU1000 - BTD-DU606Z
IC600 -TOP244Y
IC800 - CXA7002R-T6
IC700 - XWM8729ED/R
IC200 - FS6128-04
IC201 - UPD61120F1-100-JN1
IC300 / IC304 - TC58V64BFTEL, Y
IC302 - MT46V8M16TG-75
IC604 - PQ015EZ01ZP
IC601 - PQ025EZ01ZP
IC701- LM317LMX