Pioneer CB-A802, Руководство по обслуживанию

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DVD-V8000
90
1 2 3 4
1 2 3 4
C
D
F
A
B
E
7.1.3 SELF-DIAGNOSIS FUNCTION
SELF-DIAGNOSIS
Two types of self-diagnosis are provided with this unit:
(1) Self-diagnosis that is performed each time the power is turned on
(2) Self-diagnosis upon request, activated using the remote control unit
1. Diagnostic items and result indications when self-diagnosis is performed when the unit is turned on
When the player is started up after it is turned on, whether the peripheral devices of the microcomputer are operating
normally is checked. Any error detected will be displayed on the LCD. The diagnostic items are as shown below:
1
Are data written properly in the flash memory (IC603)?
2
Is Servo DSP (IC101: LC78652W) operating properly?
3
Is the video encoder (IC903: ADV7320KSTZ, IC901: CD0040AF) operating properly? (Check the communication of the
12C bus.)
4
Is the EBY chip (IC701: PE5286B) operating properly? (Check writing to and reading from the register.)
5
Can writing to and reading from the SDRAM of the EBY chip performed properly?
6
Is the AV decoder (IC751: M65776BFP) operating properly? (Check writing to and reading from the register.)
7
Can writing on and reading from the SDRAM of the AV decoder performed properly?
8
Is DMA between the EBY chip and the AV decoder performed properly?
9
Is the HDMI transmitter (IC1051: SII9190CTG64) operating properly? (Check the communication of the I
2
C bus.)
0
Is the T-REX (IC1001: PD0280B) operating properly? (Check the communication of the I 2 C bus.)
-
Can writing to and reading from the external SRAM (IC602: CY62148VLL-70ZI) of the system computer performed
properly?
=
Is the USB controller (IC1201: UHC124BF) operating properly? (Check writing to and reading from the register.)
If any error is detected during the above-mentioned self-diagnosis, the indications shown below will be displayed on the LCD:
In a case of an error for Item
1
In a case of an error for Item
2
A hardware failure of the flash memory may be the cause.
Replace the DVDM Assy.
If the same error indication appears after downloading the firmware
(using the RS-232C port), replace the DVDM Assy.
In a case of an error for Item
3
In a case of an error for Item
4
In a case of an error for Item
5
FLASH RD
SDSP RWER
VIDEO ENCODER NG
ADV VIDEO ENCODER NG
PROU
F.E REGISTER
ACCESS NG
F.E SDRAM
ACCESS NG
FLASH SIG
FLASH ID
FLASH SUM