JVC UX-G70A, Service Manual

Page: 31 / 75

(No.MB551)1-31
SECTION 4
ADJUSTMENT
4.1 ATTENTION IN SERVICE OF DVD SECTION
(1) When pickup, Flash ROM ,DVD module board were changed, initialize EEPROM by all means.
(2) When full initialization was excuted, excute learning with a DVD test disc by all means.
Test disc : VT-501, VT-502
Learning method : It is adjusted automatically by normal playback of a DVD disc.
4.2 Test mode
Item Operation Managemant
Tray lock STOP [key] + DISC 1 EJECT
(Only during Stanby Mode) Loader-Mehca is locked.
EJECT processing isn't done by pushing EJECT key at tray
lock state.
Then display to LOCKED/UNLOCKED.
EJECT 1 is pushed, pushing STOP again, tray lock is off.
Back up to tray locked ON/OFF.
Cold start [Remocon key]
STANDBY/ON + ENTER + 10 Cold start processing.
After cold start is activated, FL temporary display
COLD' for 2 seconds. Then return to previous display.
To activate cold start AC OFF system, then AC ON again.
CLOCK
FAST FORWARDING [Remocon key]
STANDBY/ON + ENTER + 2 Fast Forward Clock (Increase clock counter speed)
Can only be activated after SYSTEM Clock is set
To exit this TEST mode, AC OFF the system, then AC ON
again.
FAN ON/OFF Setting STOP [key] + DISC 2 EJECT
(During STANDBY MODE) Toggle between FAN switch ON and OFF.
( FANCTRL : L -> H TOGGLE )
This test mode is only effective during STANDBY MODE.
Need to set POUTREG to H when FANCTRL is H.
Test mode exit when system STANDBY -> P.ON
VOLUME LARGE
STEP CHANGE [Remocon Key]
STANDBY/ON + ENTER + 1 VOLUME CHANGE
VOLUME STEP MAX(40)
-> VOLUME STEP CENTER(20) TOGGLE
Normal Operation TEST mode.
System returns to normal operation after performing VOLUME
CHANGE.
MICON VERSION
DISPLAY [Remocon Key]
STANDBY/ON + ENTER + 9 TEMPORARY DISPLAY FOR MICON VERSION (5SEC)
After 5 seconds, return to previous display.
Each key press will toggle temporary display for the following:
SYSCON VERSION -> DVD LSI (BE) VERSION) and DVD
MECHA VERSION
* DVD LSI (BE & FE) VERSION CAN ONLY BEEN DISPLAY
DURING
SYSTEM POWER ON IN DVD MODE (WHEN DVD LSI P.ON)
* IF THERE IS NO INFORMATION FEEDBACK, SYS-CON
WILL DISPLAY
"WAIT" BLINKING 0.5SEC ON & OFF
Actual FL display SYSCOM version "012417-R**" or
"030227-R**"
FL ALL SEGMENT
and TEMPERATURE
DATA [Remocon Key]
STANDBY/ON + ENTER + >=10 FL ALL SEGMENT ON (NO BLINK)
Each key press will toggle between FL ALL SEGMENT, TEMP
decimal data and DVD THERMISTOR Temperature data.
DVD test mode STOP [key] + EJECT 5[key]
(Hold during AC In) Enters DVD-TEST mode.
DVD-TEST mode specification based on DVD-MODULE spec.
To exit DVD-TEST mode, AC OFF the system, then AC ON
again.
For Region Rewrite and DVD-AUDIO Device Key Writing,
refer to Region Rewrite and Device Key Writing section below
for exit procedure.