Pioneer PRA-BD11 Service Manual page 43

5
4 When no SDI signal is input, LED 2 is unlit
START
IC8108
L
pin 31
H
IC8110 L
pin 2
H
Check the mounting and
operation statuses of IC8103
Unlit
D8303
Lit
Check +5V power supply
No
+5V
?
Yes
Check the mounting status of IC8108
If there is no problem with it, IC8108 may be in failure.
5
6
Check the logical state of Pin 1 of IC8110. If it is L, check the mounting status of Pin 62 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 statues of IC8308.
• Check the logical state of Pin 12 of IC8309. If it is L, check the mounting statuse of IC8309.
Input an SDI signal supported by the PRA-BD11 and check the following:
• Check that a 270MHz clock signal with voltage swing from about 3.5-4.0 V is output from
Pins 28 and 29 of IC8103.
• Check that an SDI signal with voltage swing from about 3.2-4.0 V is output from Pins 31
and 32 of IC8103.
Check the mounting and operation statuses of CN8201, R8208, TH8301, and F8301,
in that order.
VDD = Pins 5, 8, 9, 12, 29, 51 and 68 of IC8108
Check the mounting and operation statuses of F8102, D8105 and D8106.
PRA-BD11
6
7
7
8
A
B
C
D
E
F
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