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