Sony DVP-S715 Service Manual page 64

(9-5) Audio Digital Output
ROM audio data → ARP (IC806) → AV Decoder (IC203) → Digi-
tal audio I/F output
Error 10: ARP (IC806) → AV Decoder (IC203) data transfer er-
ror
37: PLL DAC (IC209) serial transfer interruption is not de-
tected
AC-3-audio bit stream data stored in ROM (IC803) are transferred
to the AV Decoder (IC203) via ARP (IC806), and output to the
digital audio interface.
If no error is found, the message is displayed to prompt for key
entry.
Analog outputs are muted.
(9-6) Audio Digital Mute
ROM audio data → ARP (IC806) → AV Decoder (IC203) → Digi-
tal Audio I/F output
Error 10: ARP (IC806) → AV Decoder (IC203) data transfer er-
ror
37: PLL DAC (IC209) serial transfer interruption is not de-
tected
AC-3-audio bit stream data stored in ROM (IC803) are transferred
to the AV Decoder (IC203) via ARP (IC806), and output to the
Digital Audio Interface. In such a case, the mute signal is turned
on/off alternately while the data are output 4 times.
1st time : Mute off Audible
2nd time : Mute on Not audible
3rd time : Mute off Audible
4th time : Mute on Not audible
If no error is found, the message is displayed to prompt for key
entry.
(9-7) MPEG Audio Analog Output
ROM audio data → ARP (IC806) → AV Decoder (IC203) → 2ch
DAC (IC215) → Analog audio output
Error 10: ARP (IC806) → AV Decoder (IC203) data transfer er-
ror
35: 2ch DAC (IC215) serial transfer interruption is not de-
tected
37: PLL DAC (IC209) serial transfer interruption is not de-
tected
MPEG-audio bit stream data stored in ROM (IC803) are trans-
ferred to the AV Decoder (IC203) via ARP (IC806), and analog
audio data are output from 2ch DAC (IC215).
If no error is found, the message is displayed to prompt for key
entry.
(9-8) Dual DAC (Serial)
ROM audio data → ARP (IC806) → AV Decoder (IC203) → 2ch
DAC (IC215) → Analog audio output (Attenuation)
Error 10: ARP (IC806) → AV Decoder (IC203) data transfer er-
ror
35: 2ch DAC (IC215) serial transfer interruption is not de-
tected
37: PLL DAC (IC209) serial transfer interruption is not de-
tected
MPEG-audio bit stream data stored in ROM (IC803) are trans-
ferred to the AV Decoder (IC203) via ARP (IC806), and they are
attenuated by 12dB (-12dB) in the 2ch DAC (IC215), then analog
audio data are output.
If no error is found, the message is displayed to prompt for key
entry.
(9-9) Audio Mute Line
ROM audio data → ARP (IC806) → AV Decoder (IC203) → Ana-
log audio output (Mute)
Error 10: ARP (IC806) → AV Decoder (IC203) data transfer er-
ror
35: 2ch DAC (IC215) serial transfer interruption is not de-
tected
37: PLL DAC (IC209) serial transfer interruption is not de-
tected
MPEG-audio bit stream data stored in ROM (IC803) are trans-
ferred to the AV Decoder (IC203) via ARP (IC806), and analog
audio data are output from 2ch DAC (IC215).
In such a case, first the mute by I/O of SH (IC805), then the mute
by setting AV Decoder (IC203), and by setting DAC are turned on
respectively to output low frequency tones.
Finally, the mute is turned off to output high frequency tones.
Checking is finished when high frequency tones are heard.
Low tones will be heard before this checking finished, if the mute
is not effective.
To make sure which mute is not effective, the check should be
repeated while paying attention to the message.
If no error is found, the message is displayed to prompt for key
entry.
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