Yamaha AW4416 Service Manual page 108

5-2-7 DSP6 Function Test (07 DSP6)
(1) Display (Test Screen Type D)
1) Test name → DIAGNOSTIC for DSP6
(2) Test Content
1) Checks the MAIN CPU ⇔ DSP6 interface (DRAM).
2) Checks the DSP5 bus connection and serial I/O and parallel I/O connections.
(3) Judgment
1) Results area →
Exit-method area → EXIT: [ENTER / CANCEL]
2) If all tests are OK (if the overall result area displays the ALL TESTS ARE OK message):
Press ENTER to return to the test menu. An
test in the menu.
3) If a check returns an NG:
1: CPU Interface (Data bus)
NG message → IC301 TXBusy Error
2: CPU Interface (Data bus)
NG message → IC301 MSB 28
a) Message shows "0" in bit positions where Write and Read bit values matched.
3: CPU Interface (Chip Select, TXB)
NG message → IC301 CS Error
4: CPU Interface (Address bus)
NG message → IC301 MSB 28
a) Message shows "0" in bit positions where Write and Read bit values matched.
5: CPU Interface (BUS, W/R, Reg)
NG message → IC301 MSB 28
a) Message shows "0" in bit positions where Write and Read bit values matched.
6: DRAM Interface (Data bus)
NG message → IC306 MSB 28
a) Message shows "0" in bit positions where Write and Read bit values matched.
7: DRAM Interface (Address bus)
NG message → IC306 MSB 28
a) Message shows "0" in bit positions where Write and Read bit values matched.
8: DRAM Interface (Address bus & MPR) ... NG
NG message → IC301 MSB 28
a) Message shows "0" in bit positions where Write and Read bit values matched.
1: CPU Interface (Data bus)
2: CPU Interface (Data bus)
3: CPU Interface (Chip Select, TXB)
4: CPU Interface (Address bus)
5: CPU Interface (BUS, W/R, Reg)
6: DRAM Interface (Data bus)
7: DRAM Interface (Address bus)
8: DRAM Interface (Address bus & MPR)
9: SIO Connection
10: PIO Connection
ALL TEST ARE OK!
... NG
... NG
24
XXXX XXXX XXXX XXXX XXXX XXXX XXXX
... NG
... NG
24
0000 XXXX XXXX XXXX XXXX XXXX XXXX
... NG
24
X000 XXXX XXXX XXXX XXXX XXXX XXXX
... NG
24
X000 XXXX XXXX XXXX XXXX XXXX XXXX
... NG
24
X000 XXXX XXXX XXXX XXXX XXXX XXXX
24
X000 XXXX XXXX XXXX XXXX XXXX XXXX
... **
... **
...**
... **
... **
... **
... **
... **
... **
... **
appears in the left column, and the cursor advances to the next
20 16 8 LSB
20 16 8 LSB
20 16 8 LSB
20 16 8 LSB
20 16 8 LSB
20 16 8 LSB
AW4416
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