Sony STR-DE675 Service Manual page 8

STR-DE675
DSP TEST MODE
* DSP tests are performed.
* Procedure :
1. While depressing the LEVEL and CD buttons simultaneously,
press the power ?/1 Button to turn on the main power.
2. Press the NAME button.
3. Select the item by pressing Cursor button ( < or > ).
4. Select the function by turning Jog dial if selection is necessary.
Items Function
SWAP
DSP communication
Bass Management
Main Speaker cut off Freq.
LFE cut off Freq.
Co-ef. Read Address
Co-ef. Read Data
Co-ef. Write Address
Co-ef. Write Data
SRAM
8
NORM Normal channel output
Left input t Front Left, Surround Left, Center channel output
ALL
Right input t Front Right, Surround Right, Sub Woofer channel output
Left input t Center channel output
C SW
Right input t Sub Woofer channel output
Left input t Surround Left channel output
SLSR
Right input t Surround Right channel output
When this item is selected the message will be displayed " OK " if the
–
checking is correct. " ERROR " will be displayed in a case of an error.
– Not used for service
– Not used for service
– Not used for service
– Not used for service
– Not used for service
– Not used for service
– Not used for service
OFF " RAMC. OFF " will be displayed in a case of no checking.
By turning Jog dial " RAMC. EXE " will be displayed during the
checking.
ON
After a while " RAMC. PASS " will be displayed if the checking is good.
" RAMC. NG " will be displayed if an error occurs.
Description Remark
Selection of setting
output channels
Checking communication
between DSP and microcom
Checking communication
between DSP and SRAM