JVC AV-56P776 Service Manual page 22

4.4.1 TOOL OF SERVICE MODE OPERATION
Operate the SERVICE MODE with the REMOTE CONTROL UNIT.
4.4.2 SERVICE MODE ITEMS
In general, basic setting (adjustments) items or verifications are performed in the SERVICE MODE.
1.PICTURE/SOUND
2.YC SEP
3.WHITE BALANCE
4.MEMORY SETUP
5.RF AFC
6.CONVER A
7.CONVER B
8.IP
9.DSD
0.HDMI
4.4.3 HOW TO ENTER THE SERVICE MODE
(1) Set the SLLEP TIMER to 0 minutes using the [SLEEP
TIMER] key.
(2) Press the [VIDEO STATUS] key and [DISPLAY] key
simultaneously, then enter the SERVICE MODE.
(3) When the main menu is displayed, press any key of the [0]
to [9] key to enter the corresponding sub menu mode.
NOTE:
Before entering the SERVICE MODE, confirm that the setting
of TV / CATV switch of the REMOTE CONTROL UNIT is at the
"TV" side and the setting of VCR / DVD switch is at the "VCR"
side. If the switches have not been properly set, you cannot
enter the SERVICE MODE.
4.4.4 HOW TO STORE OF SETTING VALUE
When adjustment is completed, press the [MUTING] key to
memorize the adjustment value. If not to do it, adjustment data is
not memorized to the memory IC. And if exit the adjustment
mode before memorize the data, the adjustment value which you
change is canceled.
4.4.5 HOW TO EXIT THE SERVICE MODE
Press the [BACK] key to exit the SERVICE MODE.
This sets the setting values of the Video / Audio / Deflection circuits.
This is used when the YC separation circuit is adjusted. [Do not adjust]
This sets the setting values of the WHITE BALANCE.
This sets the setting values of the MEMORY ADDRESS. [Do not adjust]
This is used when the IF VCO is adjusted. [Do not adjust]
This is used when the CONVERGENCE is adjusted.
This is used when the CONVERGENCE is adjusted.
This sets the setting value of the DIST circuit. [Do not adjust]
This sets the setting value of the DSD (Digital super detail) circuit. [Do not adjust]
This sets the setting value of the Digital input circuit. [Do not adjust].
SERVICE MODE SELECT KEY
TV/CATV
switch
POWER
TV CATV VCR DVD
INPUT
DISPLAY
SLEEP
TIMER DISPLAY C.C. D/A
SLEEP
TIMER
THEATER PRO
1 2
VIDEO STATUS
VIDEO 4 5
STATUS
ASPECT
7 8
SUB CH TUNE RETURN+
0
FAVORITE ML/MTS SOUND GUIDE
MUTING
OK
MUTING
CH +
VOL
VOL
– +
VOL -
CH –
MENU BACK
VCR/DVD
VCR CHANNEL
MENU POWER TV/VCR
PREV NEXT
REW PLAY FF
REC STOP PAUSE
OPEN/CLOSE STILL/PAUSE
RM-C1270G
TV
VCR/DVD
switch
POWER
3
NUMBER
6
9
/TV
CH +
VOL +
BACK
CH -
(No.YA318)1-21