Yamaha DME4io-ES Service Manual page 59

3-4. DSP7 Test (NO. 04)
Contents: Checks the condition of Data BUS and Address BUS by writing/reading the register of DSP7. Compares
and checks by writing/reading SDRAM of DSP7 through the register.
Checks the SIO connection between each DSP by transmitting and receiving signals.
Example of Executing Screens
(1) Display Screen at OK
*** 04. DSP7 ***
DSP7 CPUIF DATABUS---
CHIP #0 OK!
CHIP #1 OK!
DSP7 CPUIF ADRBUS---
CHIP #0 OK!
CHIP #1 OK!
DSP7 CPUIF CHIPSEL---
CHIP #0 OK!
CHIP #1 OK!
DSP7 ERAMIF DATABUS---
CHIP #0 OK!
CHIP #1 OK!
DSP7 ERAMIF ADRBUS---
CHIP #0 OK!
CHIP #1 OK!
SIO CONNECTION---
DSP7-1 ==> DSP7-2
OK!
DSP7-2 ==> DSP7-1
OK!
ATSC SIO CONNECTION---
DSP7 ==> ATSC
OK!
ATSC ==> DSP7
OK!
...THE END OF DIAGNOSTICS
-----------------------
ALL TESTS ARE OK(^-^)
-----------------------
EXIT:[ENTER]
(2) Display Screen at NG
*** 04. DSP7 ***
DSP7 CPUIF DATABUS---
CHIP #0 OK!
DSP7 CPUIF ADRBUS---
CHIP #0 OK!
DSP7 CPUIF CHIPSEL---
CHIP #0 OK!
DSP7 ERAMIF DATABUS---
CHIP #0 NG!
DSP7-1
ffffffff
DSP7 ERAMIF ADRBUS---
CHIP #0 NG!
DSP7-1
0000000f
...THE END OF DIAGNOSTICS
=======================
DSP DIAG NG (-_-)
=======================
EXIT:[ENTER]
X:
abnormal bit
O:
normal bit
In case of NG, the testing item determined as NG is displayed along with its details.
Troubleshooting
In case of NG, check the portions shown in the display selectively.
As the ATSC2 is used in the test as well, check also the ATSC2 if error occurs during the connection test with the
ATSC2.
DME4io-ES/DME8i-ES/DME8o-ES
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