JVC KD-AHD69J Service Manual page 17

4.6 SERVICE MODE
4.6.1 Service mode setting
(1) Push POWER BUTTON (Power ON)
(2) Set to service mode
Keep this state more 3 seconds while continuing pressing the [MENU] button and [DISC DOWN] button scquentially.
*Exchanging of operate a menu of a service mode with the [FF] button and [REW] button.
Operate choice of a menu with a [ENT] button.
SERVICE MODE
DATA DELETE
RUNNING
CDLD ON
TUBUYAKI
ERROR READ
ROM CORRE
INIT ALL
CDERR DEL
CHERR DEL
DSPERR DEL
Note : A disc is inseted, and it is displayed only at the timer of CD function.
MODE 1
MODE 2
xx yy zz
Only the factory setup. No use.
CD ERROR
CH ERROR
DSP ERROR
ROMVERxx
Initialize EEPROM data
Clear CD error history
Clear changer error history
: The error history saved in the CD changer is cleared.
Clear DSP error history
For use in running tests
For use in running tests
CD laser illumination and electric current (mA)
xx : Early current value
yy : Current current value
zz : Difference value
Read CD error history
Read CD changer error history
: The error history saved on the CD changer is read out.
Read DSP error history
ROM correction version
(No.MA468<Rev.001>)1-17