Yamaha AW2400, Руководство по обслуживанию

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AW2400
78
(8) If “ 6 : DRAM Interface ( Data bus )...NG ”
is displayed during the test.
MSB 28 24 20 16 12 8 LSB
IC205 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
(IC206)
The same Bit in Write / Read is “0” (normal), while Bit
with indication “X” is an error Bit.
(9) If “ 7 : DRAM Interface ( Address bus )...NG ”
is displayed during the test.
MSB 28 24 20 16 12 8 LSB
IC205 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
(IC206)
The same Bit in Write / Read is “0” (normal), while Bit
with indication “X” is an error Bit.
4-10 DSP7 Function Test (10 DSP7)
4-10-1 Test Contents
Interface Test between CPU (IC002, MAIN P.C.B.)
⇔
DSP7
(IC207, IC208, MAIN P.C.B.)
Serial I/O connection Test between DSP6 (IC205, IC206, MAIN
P.C.B.)
⇔
DSP7 (IC207, IC208, MAIN P.C.B.)
Serial I/O connection Test between HGA (IC313, MAIN P.C.B.)
⇔
DSP7 (IC207, IC208, MAIN P.C.B.)
Testing item and testing judgment are displayed in the message
indication area.
1 : CPU Interface (Data bus)...** (Write / Read
test to TxBuf)
2 :CPU Interface (Chip Select)...**
(Write /
Read test to DSP TxBusy)
3 : CPU Interface (Address bus)...** (Address
Bus connection check)
4 : DSP Connection...** (Connection check between
DSP6 and DSP7)
5 : SIO Connection (HGA <-> DSP7)...**
(Connection check between HGA and DSP7)
** = test result indication
Test contents in the parentheses “( )” are not displayed on the
LCD.
4-10-2 Testing procedure
Automatically performed and it is not necessary to operate.
It takes about 12 seconds.
4-10-3 Judgment
(1) If normal:
If normal, the screen returns to the testing item indication,
“
™
” is displayed at the left end of testing item indicating
area, and the cursor moves to the next testing item.
(2) If the test result is NG or you wish to cancel the test:
Press the [CANCEL] key to return to the testing item
indication screen. At this time, “
×
” is shown at the left end
of testing item indicating area.
If there is any abnormality, error messages are displayed
in the message indication area.
(3) If “ 1 : CPU Interface ( Data bus 1 )...NG ”
is displayed during the test:
MSB 28 24 20 16 12 8 LSB
IC207 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
(IC208)
The same Bit in Write / Read is “0” (normal), while Bit
with indication “X” is an error Bit.
(4) If “ 2 : CPU Interface ( Chip Select)...NG ”
is displayed during the test:
IC207 CS Error (IC208)
(5) If “ 3 : CPU Interface ( Address bus 1
)...NG ” is displayed during the test:
MSB LSB
IC207 XXXX XXXX
(IC208)
The same Bit in Write / Read is “0” (normal), while Bit
with indication “X” is an error Bit.
(6) If “ 4 : DSP Connection...NG ” is displayed during
the test:
IC205 SO0
→
IC207/IC208 SIO34, IC205/IC206 SI4
IC205 SO1
→
IC207/IC208 SIO35, IC205/IC206 SI6
IC206 SO0
→
IC207/IC208 SIO18, IC205/IC206 SI5
IC206 SO1
→
IC207/IC208 SIO19, IC205/IC206 SI7
IC207 SIO36
→
IC208 SI040
IC207 SIO37
→
IC208 SI043
IC207 SIO38
→
IC208 SI020
IC207 SIO46
→
IC208 SI041
IC207 SIO47
→
IC208 SI042
IC207 SIO60
→
IC205 SI0
IC207 SIO61
→
IC205 SI1
IC207 SIO62
→
IC206 SI0
IC207 SIO63
→
IC206 SI1
IC208 SIO44
→
IC207 SI020
IC208 SIO45
→
IC207 SI021
IC208 SIO48
→
IC207 SI022
IC208 SIO50
→
IC207 SI023
IC208 SIO52
→
IC207 SI028
IC208 SIO53
→
IC207 SI029
IC208 SIO54
→
IC207 SI030
IC208 SIO55
→
IC207 SI031
IC208 SIO56
→
IC207 SI032
*** 10. DSP7 ***
[DIAGNOSTICS FOR DSP7]
>CPU I/F (DATA BUS)...OK!
>CPU I/F (ADR BUS)...OK!
>CPU I/F (CHIP SEL)...OK!
PSP S10 CONNECTION...