Yamaha DRX-1 Service Manual page 13

3 706 AnalogueTuner
2 901 LoopAudioUserDealer
1 906 LoopVideoUserDealer
2. Player Script Interface
2.1 Description
The Player script will give the opportunity to perform a test
that will determine which of the DVD recorder's modules
are faulty, to read the error log and to perform an
endurance loop test. To successfully perform the tests, the
DVD recorder must be connected to a TV set.
To be able to check results of certain nuclei, the player
script expects some interaction of the user (i.e. to approve
a test picture or a test sound). Some nuclei (e.g. nuclei
that test functionality of the DVDR module) require that a
DVD+RW disc is inserted.
Only tests within the scope of the diagnostic software will
be executed hence only faults within this scope can be
detected.
STEP DESCRIPTION
1 Press OPEN/CLOSE and PLAY at the same time and POWER ON the recorder to start the playerscript
2 The local display shows FPSEGMENTS. Press PLAY to start the test.
First the starburst pattern is lit, then the horizontal segments are lit, followed by the vertical segments and
the last test is light all segments test. After each of the 4 tests the user has to confirm that the correct
pattern was lit.
Press PLAY to confirm that the correct pattern was lit (four times if the FPSEGMENTS test was
successful).
Press RECORD to indicate that the correct pattern was not successfully lit.
Press STOP to skip this nucleus.
3 The local display shows FPLABELS. Press PLAY to start the test.
Press PLAY to confirm that all labels are lit.
Press RECORD to indicate that not all labels are lit.
Press STOP to skip this nucleus.
4 The local display shows FPLIGHT ALL. Press PLAY to start the test.
Press PLAY to confirm that everything was lit.
Press RECORD to indicate that not all patterns are lit.
Press STOP to skip this nucleus.
checks whether the tuner on the analogue board is accessible
This nucleus tests the components on the audio signal path The host decoder
- The analogue board
- The audio encoder
- The VSM
On the analogue board the audio is internally looped back to the digital board
Nucleus for testing the components on the video signal system path:
- The VIP
- The video encoder
- The VSM
- The host decoder
- The analogue board
On the analogue the video signal is internally routed back to the digital board.•5.2
Player Script Interface
2.2 Structure of the Player Script
The player script consists of a set of nuclei testing the
hardware modules in the DVD recorder: the Display PWB,
the Digital PWB, the Analogue In/Out PWB and the DVDR
module.
Nuclei run by the player test need some user interaction;
in the next table this interaction is described. The player
test is done in two phases:
• Interactive tests: this part of the player test depends
strongly on user interaction and input to determine
nucleus results and to progress through the full test.
Reading the error log information can be useful to
determine any errors that occurred recently during
normal operation of the DVD player.
• The loop test will perform the same nuclei as the dealer
test, but it will loop through the list of nuclei indefinitely.
DRX-1
NUCLEUS
2
502
503
520
13