| || |
NOTE: This decoder is obsolete. Most accessories and modifications mentioned on this page are no longer available.
Information for Aegir, Oritron Jupiter, Dixi & Lenco D2Mac decoders
The handset works best when held at least 6 feet away from the decoder because of the way the lens works. Putting sellotape over the lens might usefully shorten the range.
Using a SCART to four phono plug lead.
In the D2MAC menu leave RCA socket selected as standard.
Connect SCART plug to decoder out on receiver.
B/B IN socket to VIDEO OUT wire, VIDEO OUT socket to VIDEO IN wire.
R AUDIO OUT socket to AUDIO IN L wire. R AUDIO OUT socket to AUDIO IN R wire.
If you use a SCART-SCART lead.
Press MENU on the handset then ENTER (several times) until you see "RCA".
Press the "UP" button to change the socket setting from RCA to SCART then press STORE.
If there is no video output from the SCART (blank screen) you may need to press the "0" (AV) button on the handset. If possible, set the receiver AV source to EXTERNAL instead of AUTO. You must set the receiver AV source to MAC (except SRD510/520/550).
If possible, set all non-D2MAC channels to INTERNAL instead of AUTO. Set the receiver baseband output to MAC instead of PAL and make sure that the MAC baseband signal goes to pin 19 of the SCART. (On Amstrad SRD510/520/550 it comes out on pin 12 of the Decoder SCART so you must remove the wire from pin 12 of the SCART plug and discard this wire. Move the wire from pin 19 to pin 12, then label the plug "Receiver End")
Note: The picture quality from the SRD may be poor, with "ghosting". It can take up to half a minute for the decoder to "lock on" DO NOT set the Amstrad to MAC in the menu - leave it as PAL.
For some receivers you might have to remove the cover from the D2MAC decoder and change link J14 from its left position (looking from the front) to its right position. This link affects the baseband filtering and can prevent the decoder from "locking on" to the encoded picture. The DMAC decoder is unlikely to work reliably with some Pace receivers unless they have a 2GHz tuner fitted because the bandwidth of the baseband signal from the tuner is too narrow.
Link J14 is a black "saddle" which is to be found next to the silver coloured crystal at the left hand side.
Note: The RF output socket on the decoder uses PAL G standard for export so there is no audio. This is not a problem if you use only SCART connections.
Warning! If a pirate card is used with the decoder then the sharp edge may damage the card-reader contacts. In addition, card contacts which are not gold-plated may put solder onto the gold-plated card-reader contacts. The long-term effect may be unreliable connections which result in messages such as "CHECK THE CARD" even with a good card. Such problems are not covered by warranty.
Some of these were sold with a faulty Eprom which had four incorrect bytes.
The result was that the picture would scramble after 3 minutes.
Some required a modification which prevented the picture from flickering.
They all suffer from burning of the connector between transformer and regulator PCB.
It's best to cut the wires and solder them direct, *before* problems occur.
This information is given in good faith, based on several years of workshop experience involving thousands of repairs. No responsibility will be accepted for any death, damage or injury caused either directly or indirectly by the use of this information. The reader should check the facts himself. It is assumed and stressed that the reader will be familiar with good, safe, electronic workshop practice and will be familiar with all tools, components and terms used. If there is any doubt about the reader's ability to carry out such work competently and safely, the work should be referred to a specialist engineer.