FGZ000UF2
18
●
VIDEO UNIT (X35-4252-71)
• 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
The adjustment method
Adjustment
Adjustment value
Conditions
Test point
part
1
Inverter power
It is considered as Bright : DUTY 100% after
VR30
7.5
±
0.1V
-
TP577
regulation
VIDEO ADJ - key selection.
The voltage of TP577 at this time is adjusted to
7.5
±
0.1V.
2
Timing
Consider it as microcomputer : SYNC (9 pin :
VR101
15.734
±
0.01kHz
Input selector :
TP138
controller
TP138 of IC102) MUTE
→
H after Adj key
AUX input
free-run
selection.
non-signal
frequency
VR101 (H-FREE) is turned and the frequency
of the NDSH output at this time is adjusted to
15.734
±
0.01kHz.
3
Chrome IC
It is made the chroma IC adjustment mode of
-
-
Input selector :
-
adjustment
a static test mode.
AUX or RGB
3-A
Chrome VCO
1 of IC202, 4, and 5 pin are dropped on GND,
CH16
15.734
±
0.01kHz
An input
TP320
adjustment
and a touch panel adjusts TP320 in f shop
non-signal
counter.
Carry out the monitor of TP138 of IC102, and
adjust VR101 in f shop counter.
3-B
Black limiter
Carry out the monitor of the waveform of TP527
CH5
3.5V
±
0.1V
Incoming signal :
TP527
with an oscilloscope.
10 STEP (NTSC)
Adjst the amplitude value so that the waveform
/RGB
between the pedestal to the negative pedestal
is 3.5V
±
0.1V.
3-C
White limiter
Carry out the monitor of the waveform of TP527
CH10
3.5V
±
0.1V
Incoming signal :
TP527
with an oscilloscope.
10 STEP (NTSC)
Adjst the amplitude value so that the waveform
/RGB
between the 8 step signal to the negative 8 step
signal is 3.5V
±
0.1V.
ADJUSTMENT