(9-9) Audio mute line
ROM audio da?taARP? AVD ? Analog Audio Out (Mute)
Error10: Data transfer from ? to AARPV decoder is not possible.
35: 2 ch DAC serial transfer interrupt is not detected.
37: PLL DAC serial transfer interrupt is not detected.
Bit stream data of MPEG-audio that is stored in ROM is sent to AV decoder through ARP, and is output in analoAC.g form from 2 ch D
At this time the following mutes are turned on one after another to output the low frequenced on y sound. The mute by SH I/O is turn
firstly, then mute by AV decoder is mute and lastly mute by the DAC setting is turned on. hat the highAfter that mutes are turned off so t
frequency sound is output. This completes the check using the audible frequency sound. an beWhen mutes do not work, the low sound c
heard. This check can be repeated to find out which mute does not work by looking at the messa sounds.ges carefully while listening to
When error is not detected, a message is output which prompts key input.
(9-10) MGA 16-bit? 24-bit conversion (DD, KARAOKE models only)
ROM audio data? ARP? AVD (16-bit output) ? MGA ? Analog Audio Out
Error10: Data transfer from ? to AARPV decoder is not possible.
35: 2 ch DAC serial transfer interrupt is not detected.
37: PLL DAC serial transfer interrupt is not detected.
Check that the clock is delayed in accordance with the selector switch when the audio output from AVDEC is set to 16-bit. For
confirmation, output the signal after setting the selector switch to off. When the machine wtime is sameorks normally, sound of the first
as the sound of OMPEG audio: analog output�. However, sound of the second time has signif). icantly the lower level (around -48dB
When error is not detected, a message is output which prompts key input. This check is performed in the DD machines and KARAOKE
machines only.
(9-11) MGA - DCS selector switch check(DD machines only)
ROM audio data? ARP? AVD ? MGA ? Analog Audio Out
Error10: Data transfer from ? to AARPV decoder is not possible.
35: 2 ch DAC serial transfer interrupt is not detected.
37: PLL DAC serial transfer interrupt is not detected.
Check that the signal from AV decoder to DAC is cut off when the DCS selector switch is operaitch to ted. Firstly, set DCS selector sw
on to output the lower frequency sound. For confirmation, set the selector switch to ofWhen thef to output the high frequency sound.
high frequency sound is heard, check is completed. When the low frequency sound is hearselectord before the end of this test, the DCS
fails to work. When error is not detected, a message is output which prompts key input. onlyThis check is perf.ormed in DD machines
(9-12) MGA - KARAOKE selector switch check(KARAOKE machines only)
ROM audio data? ARP? AVD ? MGA ? Analog Audio Out
Error10: Data transfer from ? to AARPV decoder is not possible.
35: 2 ch DAC serial transfer interrupt is not detected.
37: PLL DAC serial transfer interrupt is not detected.
Check that the signal from AV decoder to DAC is cut off when the KARAOKE selector switch is operated. Firstly, set KARAOKE
selector switch to on to output the lower frequency sound. For confirmation, set the selector s frequencywitch to off to output the high
sound. When the high frequency sound is heard, check is completed. When the low frequencis test,y sound is heard before the end of th
the DCS selector fails to work. When error is not detected, a message is output which prompts key input.
This check is performed in KARAOKE machines only.
5-13 |
ACEC
SONY
