JVC CA-DD8, Руководство по обслуживанию

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(No.MB563)1-33
4.3 ERROR HISTORY
4.3.1 Outline
EEPROM use 256byte, when an abnormal state is generated, the factor is written in EEPROM.
Worth of a history is left for each item 16 times.
It displays by the TEST code of remote control, and each address according to the key of the display of ERROR HISTORY.
4.3.2 ERROR writing
TEXT indication
Inform the MODE condition
Disc startup and through playback
(Playback starts from start position)
Presence of WOBBLE
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Indicate to FL
Disc stop, LD off
Disc playback
Initialize the backup memory contents
Indicate temperature sensor value (AD value)
DVD-DL, SL prescribed search & measure jitter
Switching the monitor output
DVD SL x 1 jitter measurement mode
Backup memory contents (0x00-0x63)
indication (BWD)
Backup memory contents (0x00-0x63)
indication (FWD)
CD_LD on & indicate laser current
DVD_LD on & indicate laser current
Port check mode
Press MENU key
Remarks 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
C
C
C
S
C
S
C
S
C
S
C
S
C
S
C
S
C
S
C
S
C
S
C
S
C
C
S
9C 1F 04
AA
9C 13
9C 14
9C 15
AA
9C 19
9C 18
9C 1B
9C 1D
9C 1C
9C 1A
9C 03
9C 1E
9C 11
9C 12
** ** ** **
AA
** ** ** **
AA
** ** ** **
** ** ** **
AA
** ** ** **
9C 16
AA
** ** ** **
AA
** ** ** **
AA
** ** ** **
AA
** ** ** **
AA
** ** ** **
AA
** ** ** **
AA
** ** ** **
Press 10key [1]
Press 10key [2]
Press 10key [3]
Press 10key [4]
Press 10key [5]
Press 10key [6]
Press 10key [7]
Press 10key [8]
Press 10key [9]
Press 10key [10]
Press 10key [0]
Press 10key [+10]
Press STOP key
Press PLAY key
(1) ERROR information
(2) EEPROM writing timing
No. Item Count
1
SAFETY Number
AD value 16
SAFETY abnormal No.
16 AD value at time
Value of writing Writing condition Guessed factor
When detectiong of SAFETY
error, writing SAFETY number
and AD value Power circuit failure.
Damege of card wire.
Missing key operation.
2
P.OFF timeout factor
P.OFF factor Factor of power off
16 Factor of failure Time out of power OFF process Mechanical and module failure.
Damege of card wire.
3
DVD 16 Factor of failure
Error with DVD Module failer
4
16
When starting power off process User operation
Others
5
When abnormality occurs respectively, the value of the generated item is rewritten.
The writing starting address is assumed to be the latest one, and even the 16th byte writes the history in new the order
at the following.
The writing method does the batch writing 16 bytes with PAGE WRITE.
(3) EEPROM clear condition
When COLD SET is fixed by remote control code [ 0 ]+[ ]+[POWER] receive, the ERROR HISTORY part is
cleared (ALL0x00).
(EEPROM clear not done by COLD START process)
Receive
[ 0 ] + [ ] + [POWER]
EEPROM
E.HISTORY clear
COLD
process