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VIDEO UNIT (X35-425x-xx)
• Start a set in test mode at the time of video board adjustment.
• How to enter to test mode : Pushing operation of 2 keys right (clock)-and-left (image adj.) both ends side and a touch panel. And
supply to power is ON.
• After starting : perform substrate adjustment for a video board by a design mode → VIDEO ADJ key with reference to the
following item.
• Adjust a picture position by After starting : (AUX) Manufacture mode → POSI (NAVI)
• VIDEO ADJ mode : it is the rectangle color frog of middle at the time of adjustment item selection. It is considered as an
adjustment end by choosing a rectangle again after adjustment.
No.
Adjustment item
1
Inverter power
regulation
2
Timing
controller
free-run
TE
L 13942296513
frequency
3
Chrome IC
adjustment
3-A
Chrome VCO
adjustment
3-B
Black limiter
3-C
White limiter
www
.
ADJUSTMENT
The adjustment method
It is considered as Bright : DUTY 100% after
VIDEO ADJ - key selection.
The voltage of TP577 at this time is adjusted to
7.5±0.1V.
Consider it as microcomputer : SYNC (9 pin :
TP138 of IC102) MUTE → H after Adj key
selection.
VR101 (H-FREE) is turned and the frequency
of the NDSH output at this time is adjusted to
15.734±0.01kHz.
It is made the chroma IC adjustment mode of
a static test mode.
1 of IC202, 4, and 5 pin are dropped on GND,
and a touch panel adjusts TP320 in f shop
counter.
Carry out the monitor of TP138 of IC102, and
adjust VR101 in f shop counter.
Carry out the monitor of the waveform of TP527
with an oscilloscope.
Adjst the amplitude value so that the waveform
between the pedestal to the negative pedestal
is 3.5V±0.1V.
Carry out the monitor of the waveform of TP527
with an oscilloscope.
Adjst the amplitude value so that the waveform
between the 8 step signal to the negative 8 step
x
ao
signal is 3.5V±0.1V.
y
i
8
Adjustment
part
VR30
VR101
Q Q
3
6 7
1 3
-
CH16
CH5
CH10
u163
.
FGZ806EF2/EOP
2 9
9 4
2 8
Adjustment value
Conditions
7.5±0.1V
-
15.734±0.01kHz
Input selector :
AUX input
non-signal
1 5
0 5
8
2 9
9 4
-
Input selector :
AUX or RGB
15.734±0.01kHz
An input
non-signal
3.5V±0.1V
Incoming signal :
10 STEP (NTSC)
/RGB
3.5V±0.1V
Incoming signal :
10 STEP (NTSC)
/RGB
m
co
9 9
Test point
TP577
TP138
2 8
9 9
-
TP320
TP527
TP527
13
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