Kenwood LZ-651W Service Manual page 9

No. Adjustment item Measurement point Adjustment part
6 CONTRAST TP204 (G OUT)
7 Y GAIN TP204 (G OUT)
8 GAMMA1 TP204 (G OUT)
9 GAMMA2 TP204 (G OUT)
10 R SUB BRIGHT TP203 (R OUT)
11 B SUB BRIGHT TP205 (B OUT)
R SUB
12 TP203 (R OUT)
CONTRAST
B SUB
13 TP205 (B OUT)
CONTRAST
14 VCOM CN501 16PIN (TP611) TEST mode CH1
15 FLICKER DISPLAY
PICTURE
16 DISPLAY
POSITION
INPUT VIDEO SIGNAL : 10STEP VIDEO SIGNAL (NTSC 1.0Vp-p)
The definition of video signal and pedestal signal
ADJUSTMENT
Adjust the amplitude value so that the waveform between
TEST mode CH13
the white to the negative white is 2.7V ± 0.1V
Adjust the amplitude value so that the waveform between
TEST mode CH2
the pedestal to the 10 step signal is 3.1V ± 0.1V
Adjust the amplitude value so that the waveform between
TEST mode CH11
the pedestal to the 3 step signal is 1.4V ± 0.1V
Adjust the amplitude value so that the waveform between
TEST mode CH12
the pedestal to the 10 step signal is 3.2V ± 0.1V
Adjust the amplitude value so that the waveform between
TEST mode CH8 the 1 step signal to the negative 1 step signal is 3.3V ±
0.1V
Adjust the amplitude value so that the waveform between
TEST mode CH9 the 1 step signal to the negative 1 step signal is 3.3V ±
0.1V
Adjust the amplitude value so that the waveform between
TEST mode CH14
the white to the negative white is 2.9V ± 0.1V
Adjust the amplitude value so that the waveform between
TEST mode CH15
the white to the negative white is 2.5V ± 0.1V
Adjust the amplitude value so that VCOM square wave is
7.4V ± 0.1V
It adjusts so that the flicker level will be the minimum
TEST mode CH23
(Auto dimmer off / Bright = max / Zoom mode)
The screen of NAVI is made into 2 screen mode. It
VR501 adjusts so that an active window may come to the right
end of a screen.
negative 1 step
negative white
Adjustment value
negative pedestal
white
1 step
pedestal
LZ-651W
Measuring instrument
Oscilloscope
Oscilloscope
Oscilloscope
Oscilloscope
Oscilloscope
Oscilloscope
Oscilloscope
Oscilloscope
Oscilloscope
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