Yamaha AW2400, Руководство по обслуживанию

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AW2400
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(5) If “ < AUDIO > NG ” is displayed during the test.
Audio signal in the audio line is wrong.
HGA (IC313, MAIN P.C.B.), DIR2 (IC302, MAIN P.C.B.)
and audio lines between them should be checked.
4-13 CD-RW drive connection test (13 CD-RW)
4-13-1 Test Contents
Connection check between CPU (IC002, MAIN P.C.B.)
⇔
CN309, MAIN P.C.B
⇔
CN101, IDE P.C.B.
⇔
CN103, IDE
P.C.B.
⇔
CD-RW
4-13-2 Testing procedure
Automatically performed and it is not necessary to operate.
4-13-3 Judgment
(1) 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 “
NG: CD DRIVE ERROR !
” is displayed during the
test:
Malfunction of the CD drive
(4) If “ NG: CPU <=> CD REGISTER (PIO) ERROR! ”
is displayed during the test:
Abnormality in CPU (IC002, MAIN P.C.B
⇔
CD
REGISTER circuit transfer)
4-14 WORD CLOCK test (14 WORD CLOCK)
4-14-1 Test Contents
WORD CLOCK GEN. function (X’tal OSC, VCO) test
4-14-2 Testing procedure
Automatically performed and it is not necessary to operate.
4-14-3 Judgment
(1) If “OK !” is displayed and the result is OK:
Press the [ENTER] key.
Returns to the testing item indication screen, “
™
” is
displayed at the left end of testing item indicating area,
and the cursor moves to the next testing item.
(2) If abnormally finished:
If there is any abnormality, error messages are displayed
in the message indication area.
Press the [ENTER] key to return to the testing item
indication screen. At this time, “
×
” is shown at the left end
of testing item indicating area.
(3) If “
44.1k INTERNAL CLOCK
” is displayed during the
test:
44.1 k word clock oscillation malfunction (X302, MAIN
P.C.B. malfunction)
(4) If “ 44.1k 0% VARI ” is displayed during the test:
44.1 k oscillation malfunction (IC317, MAIN P.C.B.
malfunction)
(5) If “ 44.1k +7% VARI ” is displayed during the test:
44.1 k +7 % oscillation malfunction (IC317, MAIN P.C.B.
malfunction)
(6) If “
44.1k -10 % VARI
” is displayed during the test:
44.1 k –10 % oscillation malfunction (IC317, MAIN P.C.B.
malfunction)
(7) If “ 48k INTERNAL CLOCK ” is displayed during the
test:
48 k word clock oscillation malfunction (X301, MAIN
P.C.B. malfunction)
(8) If “ 48k 0% VARI ” is displayed during the test:
48 k oscillation malfunction (IC317, MAIN P.C.B.
malfunction)
(9) If “
48k +7% VARI
” is displayed during the test:
48 k +7 % oscillation malfunction (IC317, MAIN P.C.B.
malfunction)
(10) If “ 48k -10 % VARI ” is displayed during the test:
48 k –10 % oscillation malfunction (IC317, MAIN P.C.B.
malfunction)
*** 13. CD-R/W ***
EXIT : [ENTER]
OK !
*** 14. W.CLOCK ***
EXIT : [ENTER]
OK !