Yamaha AW 16 G Service Manual page 45

2) In the event of an abnormality or when the process
is aborted:
CANCEL
Press the key to return to the test item
screen. An [X] mark will be displayed on the left-
hand side of the test item column, and the cursor
will not move.
4-5. LED Display Test (05 LED)
(1) Test Content
1) Carries out a dot display test on the LCD display.
2) All dots on the LCD screen will flash repeatedly.
Visually check to ascertain that there are no
scratches or missing dots.
(2) Judgment
1) Visually confirm that there are no scratches or
missing dots, and then press the
the test. The screen will return to the test item
screen, an [O] mark will be displayed on the left-
hand side of the test item column, and the cursor
will move to the next test item.
2) In the event of an abnormality or when the process
is aborted:
CANCEL
Press the key to return to the test item
screen. An [X] mark will be displayed on the left-
hand side of the test item column, and the cursor
will not move.
4-6. DSP6 Function Test (06 DSP6)
The [ 06. DSP6
*** ***
(1) Test Content
1) Carries out interface tests between the CPU and
DSP6, and between DSP6 and the DRAM.
2) The names of the items to be tested and the
judgment results will be displayed.
1: CPU I/F (DATA BUS 1)
(TxBusy test on the WCR register)
2: CPU I/F (DATA BUS 2)
(Write/Read test into the TxBuf)
3: CPU I/F (CHIP SELECT, TXB)
(Write/Read test into the DSP's TxBusy)
4: CPU I/F (ADDRESS BUS)
(Address bus connection line verification)
5: CPU I/F (BUS, W/R, REG)
(Bus W/R register test)
6: DRAM I/F (DATA BUS)
(Write/Read test into the DRAM)
7: DRAM I/F (ADDRESS BUS)
8: DRAM I/F (ADDRESS BUS & MPR)
(Write/Read test into all DRAM areas)
= Test result display
**
The details of the test listed within the parenthesis
will not be displayed on the LCD.
(2) Judgment
1) A messages stating "ALL TEST AREA OK!" will be
displayed in the area if all test judgments are
**
successful.
ENTER
key to end
] test item will be displayed.
• • •
**
• • •
**
• • •
**
• • •
**
• • •
**
• • •
**
!
• • •
**
!
• • •
**
ENTER
2) Press to end the test. The screen will return
to the test item screen, an [O] mark will be displayed
on the left-hand side of the test item column, and
the cursor will move to the next test item.
3) If the test judgment is not successful, as in the
following examples, the relevant error message will
be displayed below the test item in question.
1: CPU I/F (DATA BUS 1)
IC310 TXBusy Error
2: CPU I/F (DATA BUS 2)
MSB 28 24 20
IC310 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
"0" (normal) is displayed for the bits that matched
*
during the Write/Read process. The bits that
display "X" are the error bits.
3: CPU I/F (CHIP SELECT, TXB)
IC310 CS Error
4: CPU I/F (ADDRESS BUS)
MSB 28 24 20
IC310 0000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
"0" (normal) is displayed for the bits that matched
*
during the Write/Read process. The bits that
display "X" are the error bits.
5: CPU I/F (BUS, W/R, REG)
MSB 28 24 20
IC310 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
"0" (normal) is displayed for the bits that matched
*
during the Write/Read process. The bits that
display "X" are the error bits.
6: DRAM I/F (DATA BUS)
MSB 28 24 20
IC310 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
"0" (normal) is displayed for the bits that matched
*
during the Write/Read process. The bits that
display "X" are the error bits.
7: DRAM I/F (ADDRESS BUS)
MSB 28 24 20
IC310 X000 XXXX XXXX XXXX XXXX XXXX XXXX XXXX
"0" (normal) is displayed for the bits that matched
*
during the Write/Read process. The bits that
display "X" are the error bits.
4) If "NG" is displayed in any of the items, press the
CANCEL
key to return to the test item display screen.
5) An [X] mark will be displayed on the left-hand side
of the test item column, and the cursor will not
move.
4-7. DSP7 Function Test (07 DSP7)
The [
07. DSP7
*** ***
(1) Test Content
1) Carries out interface tests between the CPU and
DSP7.
AW16G
NG
• • •
NG
• • •
16 12 8 LSB
NG
• • •
NG
• • •
16 12 8 LSB
NG
• • •
16 12 8 LSB
NG
• • •
16 12 8 LSB
NG
• • •
16 12 8 LSB
] test item will be displayed.
45