Yamaha AW 1600, Руководство по обслуживанию

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AW1600
62
4-15 SDRAM (HGA) function test (15.SDRAM)
4-15-1 Display
4-15-2 Test content
Check the HGA connections.
4-15-3 Procedures
This test is executed automatically.
If the test completes successfully:
The test menu screen reappears with “
{
” displayed to the
left of the test item (15.SDRAM), and the cursor advances
to the next test item.
If the test fails or if you wish to cancel the test:
Press the [CANCEL] key. The test menu screen reappears
with “×” displayed to the left of the test item.
If there is any error, the error message is displayed on the
LCD.
4-15-4 Judgment
Display Judgment
“○”
is displayed to the left of
the test item
The test completes
successfully.
“×”
is displayed to the left of
the test item
The test fails or is canceled.
“
HGA-SDRAM (Check CPU ->
HGA -> SDRAM)
”
is displayed
during the test.
Connection error between
CPU (IC002 on the MAIN
circuit board)
→
HGA (IC313
on the MAIN circuit board)
→
SDRAM (IC306 and IC307 on
the MAIN circuit board).
“
IDE(HDD)-HGA-SDRAM
(Check IDE -> HGA ->
SDRAM)
”
is displayed during
the test.
Connection error between the
internal hard disk drive
→
HGA (IC313 on the MAIN
circuit board)
→
SDRAM
(IC306 and IC307 on the MAIN
circuit board).
*** 15. SDRAM ***
OK !
EXIT:[ENTER]