Pioneer PRA-BD11 Service Manual page 40

1
• Check the following in Normal Operation mode 10 seconds or more after the power is turned on.
• In addition, input a signal according to the setups for each symptom.
A
1 In a case where LEDs 1-3 are all unlit regardless of the existence of the AES/EBU input signal
START
IC8201
pin 106
B
H
IC8205
pin 10
H
D8304
Lit
C
Check +2.5 V
power supply
TP8482=
+2.5V
Yes
Check VCCO voltage of IC8201
D
+3.3V
?
Yes
Check VCCINT voltage of IC8201
E
+2.5V
?
Yes
Check the mounting status
of IC8201.
If there is no problem in mounting status, IC8201 may be in failure.
F
40
1
2
• Check the logical state of TP8215. If it is L, check the mounting status of IC8202.
L
• 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.
L
• Pin 7 of IC8205 is H (reset).
• Check the mounting status of IC8205.
Unlit
• Check the mounting and operation statuses of CN8201, R8209, TH8302, F8303, and
IC8306, in that order.
No
Check the mounting and operation statuses of IC8307.
VCCO = Pins 12, 26, 39, 53, 65, 78, 92, 105, 117, 130, 144, 156, 170, 184,
197 and 208 of IC8201
No
Check the mounting and operation statuses of F8202.
VCCINT = Pins 13, 28, 38, 66, 76, 91,118, 128, 143, 171, 186 and 196 of IC8201
No
Check the mounting and operation statuses of F8201.
PRA-BD11
2
3
3
4
4