PRA-BD11
44
1
2
3
4
1
2
3
4
C
D
F
A
B
E
START
Check the logical states of Pins 1, 4, 9 and 12 of IC8312.
If they are all H, check the mounting statuses of Pins 192, 193, 194, and 195 of IC8201.
Check the mounting and operation statuses of F8302.
Check the mounting and operation statuses of F8305.
Check the mounting and operation statuses of F8304.
IC8301
pins 17, 18, 23
and 24
D8303
Check +5V power supply
Check the mounting status of IC8301
TP8481=
+5V ?
Is pin 7 of IC8301
+5V ?
Is pin 22 of IC8301
+5V ?
IC8311
pin 2
No
No
No
Yes
Yes
Yes
H
L
H
L
IC8311
pin 1
H
L
5
When no AES/EBU signal is input, LED 3 is unlit
If there is no problem in mounting status, IC8301 may be in failure.
Check the mounting status of Pin 199 of IC8201.
• Check the logical state of TP8215. If it is L, check the mounting status of CN8202.
• Check the logical state of Pin 4 of IC8308. If it is L, check the mounting status of IC8308.
• Check the logical state of Pin 12 of IC8309. If it is L, check the mounting status of IC8309.
Check the mounting and operation statuses of CN8201, R8208, TH8301 and F8301,
in that order.
Unlit
Lit
Содержание PRA-BD11
Страница 19: ...PRA BD11 19 5 6 7 8 5 6 7 8 C D F A B E A 3 4 ...
Страница 21: ...PRA BD11 21 5 6 7 8 5 6 7 8 C D F A B E ...
Страница 23: ...PRA BD11 23 5 6 7 8 5 6 7 8 C D F A B E B 1 2 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B ...
Страница 25: ...PRA BD11 25 5 6 7 8 5 6 7 8 C D F A B E B 2 2 1 2 B 1 2 B 1 2 B 1 2 B ...