Yamaha AW2816 Service Manual page 64

AW2816
3) If the following NG messages appear:
• Checking R/W
MSB LSB
0XXX XXXX

Write and Read values did not match. "0" indicates

that the write and read values for the bit match.

If all bits are "X", there is a problem with the CS or

address bus.


If only one bit is "X", there is a problem with the

data bus.
• Checking MIX CPU <-> HDR CPU ...NG
No response from HDR CPU
(Mixer CPU and HDR CPU interruption error)
• Checking MIX CPU <-> HDR CPU ...NG
MSB LSB
0XXX XXXX
(Problem with the CS, address or data bus at the
Mixer CPU or HDR CPU)

Write and Read values did not match. "0" indicates

that the write and read values for the bit match.

If all bits are "X", there is a problem with the CS or

 address bus.

If only one bit is "X", there is a problem with the

data bus.
Press the CANCEL key. The test menu will reappear
with NG displayed to the left of the test item
(DPRAM). The cursor does not advance.
4-5 DSP6 Function Test (05 DSP6)
"--- DIAGNOSTIC for DSP6 ---" is displayed on the
LCD.
(1) Test Content
1) Checks the MAIN CUP / DSP6 interface.
2) Checks the DSP6 / DRAM interface.
(2) Judgment
1) Result
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. SIO Connection
2) If all the tests are "OK":
"All test are OK" will be displayed.
ENTER
Press the key. The test menu will reappear
with displayed to the left of the test item (DSP6),
and the cursor advances to the next test in the menu.
3) If the following NG messages appear:
1: CPU Interface (Data bus)
•
IC404 TXBusy Error
64
...NG














...**
...**
...**
...**
...**
...**
...**
... skip
... skip!
(**: Indicates OK or NG.)
...NG
2: CPU Interface (Data bus)
•
MSB 28 24
IC404 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
("0" is displayed for the bits whose write and read
values match.)
3: CPU Interface (Chip Select, TXB)
•
IC404 CS Error
4: CPU Interface (Address bus)
•
MSB 28 24
IC404 0000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
("0" is displayed for the bits whose write and read
values match.)
5: CPU Interface (BUS, W/R, Reg)
•
MSB 28 24
IC404 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
("0" is displayed for the bits whose write and read
values match.)
6: DRAM Interface (Data bus)
•
MSB 28 24
IC404 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
("0" is displayed for the bits whose write and read
values match.)
7: DRAM Interface (Address bus)
•
MSB 28 24
IC404 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
("0" is displayed for the bits whose write and read
values match.)
8: DRAM Interface (Address bus & MPR) ...NG
•
MSB 28 24
IC404 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
("0" is displayed for the bits whose write and read
values match.)
Press the CANCEL key. The test menu will reappear
with NG displayed to the left of the test item (DSP6).
The cursor does not advance.
4-6 DSP7 Function Test (05 DSP7)
"--- DIAGNOSTIC for DSP7 ---" is displayed on the
LCD.
(1) Test Content
1) Checks the MAIN CUP / DSP7 interface.
2) Checks the DSP7 / E-RAM interface.
3) Checks the serial I/O connection between DSP6 and
DSP7.
(2) Judgment
1) Result
1: CPU Interface (Data bus)
2: CPU Interface (Chip Select)
3: CPU Interface (Address bus)
4: E-RAM Interface (Data bus)
5: E-RAM Interface (Address bus)
6: SIO Connection (DSP6 <-> DSP7)
2) If all the tests are "OK":
"All test are OK" will be displayed.
ENTER
Press the key. The test menu will reappear
with displayed to the left of the test item (DSP7),
and the cursor advances to the next test in the menu.
...NG
20 16 12 8 LSB
...NG
...NG
20 16 12 8 LSB
...NG
20 16 12 8 LSB
...NG
20 16 12 8 LSB
...NG
20 16 12 8 LSB
20 16 12 8 LSB
... **
... **
... **
... **
... **
... **
(**: Indicates OK or NG.)