Pioneer PRA-BD11 Service Manual page 41

5
2 In a case where LED 1 is unlit regardless of the existence of the SDI signal input
START
IC8106 L
pin 16
H
IC8109 L
pin 2
H
Unlit
D8304
Lit
Check +3.3V power supply
NG
+3.3V
?
OK
Check the mounting status of IC8106.
If there is no problem in mounting status, IC8106 may be in failure.
5
6
Check the logical state of Pin 1 of IC8109.
If it is L, check the mounting status of Pin 191 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, R8209, TH8302, F8303,
and IC8306, in that order.
VDDINT = Pins 1, 17, 26 and 90 of IC8106
VDDIO = Pins 39, 51, 67 and 76 of IC8106
Check the mounting and operation statuses of F8107.
PRA-BD11
6
7
7
8
A
B
C
D
E
F
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