JVC AV-27D201 Service Manual page 14

AV-27D201
AV-32D201
BASIC OPERATION OF SERVICE MENU
1. The adjustment using SERVICE MENU
The following adjustment items use the SERVICE MENU in the series of the adjustment. The adjustments are made on the basis of the
initial setting values. The adjustment values which adjust the screen to the optimum condition can be different from the initial setting values.
With the SERVICE NEMU, various settings can be made, and they are broadly classified in the following items of settings.
PICTURE

















Adjustment of the VIDEO/CHROMA and DEFLECTION circuits.
SOUND



















Adjustment of the AUDIO circuit.
THEATER
















Setting of the THEATER MODE screen.
OTHERS

















Setting of the screen that except the THEATER MODE.
LOW LIGHT















Adjustment of the WHITE BALANCE (Low light) circuit.
HIGH LIGHT














Adjustment of the WHITE BALANCE (High light) circuit.
RF AFC



















Verification of the RF AFC adjustment. Because of it's no requirement on the service (Do not adjust).
VCO (CW)
















Adjustment of the IF VCO circuit.
C BUS CTRL













Display and adjust the I
2
I
2. Key operation of the SERVICE MENU
[Enter to SERVICE MENU]
Press the SLEEP TIMER key and set the SLEEP TIMER for 0 MIN .
Then press the DISPLAY key and the VIDEO STATUS key of the remote control unit
at the same time. Then enter the SERVICE MENU screen shown in figure.
[Exit form SERVICE MENU]
When complete the adjustment work, press the EXIT key to return to the main
SERVICE MENU. And then press the EXIT key again, return to the normal screen.
[Select from main menu]
In main SERVICE MENU, press the UP or DOWN key on the remote control unit, to select any of the adjustment items.
The letters of the selected items are displayed in yellow.
[PICTURE, SOUND and OTHERS]
1) Select any of PICTURE, SOUND or OTHERS items, then press the LEFT or RIGHT key in main SERVICE MENU, the selectable
screen will be displayed as shown in figure page later.
2) Then the UP or DOWN key is pressed, the PICTURE mode screen or the SOUND mode screen or the OTHERS mode screen is
displayed, and their setting can be performed.
SETTING ITEM
SETTING VALUE
1. BRIGHT
PICTURE MODE
14
2
C BUS CTRL condition, but it is no requirement on service.
(Do not adjust and fix on.)
SETTING ITEM
1. OSD POS.




OTHERS MODE
No. 51686
SETTING VALUE
1. NOISE DET




STATUS
SERVICE MENU (MAIN MENU)
SERVICE MENU
PICTURE SOUND
THEATER OTHERS
LOW LIGHT HIGH LIGHT
RF AFC
VCO(CW) I2C BUS CTRL
SELECT BY
OPERATE BY
EX
EXIT BY
SETTING ITEM
SETTING VALUE













SOUND MODE
IT