Pra-Bd12]: List Of Status Led Indication - Pioneer PRA-BD11 Service Manual

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7.1.6 [PRA-BD12]: LIST OF STATUS LED INDICATION

A total of 9 LEDs (3 for checking the power supply and 6 for checking operations) are provided with the PRA-BD12.
With these LEDs, the operation status of the PRA-BD12 can be checked after +5 V power is supplied to it.
A
B
1. Indications of the LEDs for checking the power supply
After +5 V power is supplied to the PRA-BD12, an LED will light if power with the corresponding voltage is being
C
supplied, or it will remain unlit if power with the corresponding voltage not supplied. All three LEDs must be lit for there to
be no problem with the PRA-BD12.
Each LED corresponds to the following power voltages:
+5 V : Power supplied from AVIB Assy through CN8601 (PH connector) then through the overcurrent protection circuit
+3.3 V : Power supplied from the +5 V power supply through IC8602 (regulator)
+2.5 V : Power supplied from the +5 V power supply through IC8601 (regulator)
D
2. Firmware version indication by the LEDs for checking operations
For about 10 seconds immediately after +5 V power is supplied to the PRA-BD12, six LEDs for checking operations
indicate the firmware version with their lighting statuses. LEDs 1-4 represent the place value of ones, and LEDs 5-6
represent the place value of tens. See the table below.
Version
E
Statuses of
the LEDs for
checking
operations
Version
Statuses of
the LEDs for
checking
operations
F
48
1
2
CN8610
LEDs for checking LEDs for checking
the power supply
1 2
7 8
2
3
CN8601 CN8602
operations
3 4
9 10
PRA-BD11
3
4
5 6
20 30
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