Error History; Error Writing; Error Information; Eeprom Writing Timing - JVC DD-8E Service Manual

TEXT indication
C
9C 1F 04
Press MENU key
Press 10key [1] C 9C 11
C 9C 12
Press 10key [2]
S AA
Press 10key [3]
C 9C 13
S AA
Press 10key [4]
C
9C 14
S AA
Press 10key [5]
C 9C 15
S AA
Press 10key [6]
C 9C 16
AA
S
Press 10key [7] 9C 19
C
S
AA
Press 10key [8] C
9C 18
S AA
Press 10key [9]
C 9C 1B
AA
S
Press 10key [10]
C 9C 1C
AA
S
Press 10key [0]
C 9C 1D
S AA
Press 10key [+10]
C 9C 1A
AA
S
Press STOP key 9C 03
C
Press PLAY key
C 9C 1E
AA
S
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

(1) ERROR information

No. Item
1
SAFETY Number
AD value
2
P.OFF timeout factor
3
DVD
4
P.OFF factor
5
Others

(2) EEPROM writing timing

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 ]+[
cleared (ALL0x00).
(EEPROM clear not done by COLD START process)
Receive
[ 0 ] + [ ] + [POWER]
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
** ** ** **
Value of writing
Count
SAFETY abnormal No.
16
16 AD value at time
16 Factor of failure
16 Factor of failure
16 Factor of power off
EEPROM
E.HISTORY clear
Remarks
Inform the MODE condition
Disc startup and through playback
(Playback starts from start position)
Presence of WOBBLE
Indicate to FL
Port check mode
Indicate to FL
CD_LD on & indicate laser current
Indicate to FL
DVD_LD on & indicate laser current
Indicate to FL
DVD SL x 1 jitter measurement mode
Indicate to FL
Backup memory contents (0x00-0x63)
indication (BWD)
Indicate to FL
Backup memory contents (0x00-0x63)
indication (FWD)
Indicate to FL
Indicate temperature sensor value (AD value)
Indicate to FL
DVD-DL, SL prescribed search & measure jitter
Indicate to FL
Switching the monitor output
Indicate to FL
Initialize the backup memory contents
Indicate to FL
Disc stop, LD off
Disc playback
Indicate to FL
Writing condition
When detectiong of SAFETY
error, writing SAFETY number
and AD value
Time out of power OFF process
Error with DVD
When starting power off process
]+[POWER] receive, the ERROR HISTORY part is
COLD
process
Guessed factor
Power circuit failure.
Damege of card wire.
Missing key operation.
Mechanical and module failure.
Damege of card wire.
Module failer
User operation
(No.MB563)1-33