Adjustment Of Horizontal Display Start Position And Pixel; Vcom Amplitude And Agc And Wb Au- Tomatic Adjustments - Kenwood DDX7032 Service Manual

1. Flicker adjustment
● Condition
Video source: Video
Video: Luster white 30%~50%
BRIGHT: MAX
MODE: FULL
● Adjustment procedure
q Display luster white 30%~50%.
w Place a fl icker adjustment jig to the monitor and observe
the waveform with an oscilloscope.
e Turn X35-494: VR200 and adjust to make the amplitude
of the waveform to minimum.
Oscilloscope range: 20mV, 0.5mS
● Note
q In checking the screen after the adjustment, move the
monitor up and down in order to confi rm that the screen
does not fl icker. (This check is also carried out on the 07
model.)
w Noise due to AC200V can be observed in the fl icker ad-
justment jig and oscilloscope and thus carefully set up
the power supply and GND of the jig and oscilloscope.
∗ In 07 model, GND of the measurement equipment has
been fl oated.
2. VCOM Amplitude and AGC and WB Au-
tomatic adjustments
● Adjustment Method
q Press Auto Adjust on the Test Mode Main screen.
ADJUSTMENT
w After the automatic adjustment, "Auto Set OK" will be
shown to indicate the completion of the adjustment.
3. Adjustment of Horizontal display start
position and pixel
● GRAPHIC Adjustment screen
q Screen position adjustment key (HPOSI): Adjustment of
horizontal position from which the entire screen is dis-
played. (Default: 0)
w Display range adjustment key (DOT_FREQ): Adjustment
of horizontal range in which the video is displayed. (De-
fault: 64)
e Pixel adjustment key (DOT_PHASE): Adjustment of hori-
zontal position on which the pixel is displayed. (Default:
24)
In "DOT_PHASE" adjustment, do not set the value at 25
or larger but always set the value at lower than its default
value (24).
Note: Make the adjustment in the order of sequence of the
above number, q, w, and e.
● Video image displayed on Adjustment screen
GRAPHIC: Special screen used only for adjustment (See
below)
DNX_NAVI: Special screen used only for adjustment of
GARMIN (See below)
DDX_NAVI: Input KNA-DV3200 or KNA-G520.
Note: Different adjustment screen is shown depending on
what type (model) of NAVI is connected.
DDX7032/7032M/712
DNX7120/7220/7320
Proceed to the next Adjustment screen
Screen Position Adjustment key
Display Range Adjustment key
Pixel Adjustment key
Return to the Menu screen
Screen Horizontal Position Adjustment OSD
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