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DT-M3050W
Caution for Adjusting
1. Because this set has
HOT
and COLD sections in the power supply circuit, follow the below precautions.
(1)
Never
touch
the HOT
and
COLD
section
at the
same
time
to
prevent
you from getting
an electric
shock.
(2)
Never
short
between. the HOT
and COLD section
to prevent the parts
from
damaging.
(3) Never measure the HOT and COLD section at the
same
time when using any measurement instrument.
2. Color Video/Data Monitors need warrning-tJp to make
each function
stabilize, so operate
the
set
to
be adjusted over 30 minutes.
3. When a screwdriver
is needed during
adjustment, use
a
nonmetallic screwdriver to
prevent
unexpected short circuit.
4.
Always unplug the AC
power
cord
plug
from
an AC
line outlet
before
beginning any
operation
such
as
removing
the
chassis.
Explanation of Adjustment Mode
Because this set has two kinds
of
adjustment
mode,
chose one of them according
to
the adjustment Item.
NOTE: During adjustment mode 1 or 2,
(1)
the
remote
control unit can not switch the
power
off.
(2)
even
if switching the power
off
with the
power
switch
on
the set, the adjustment mode can not be
reset
to a normal
mode.
Setting to Adjustment Mode
Normel Mede
(on screen: green)
I
1---------------il
While pressing
the
AUDIO
button
of
the remote
control
unit,
press
the TV SYSTEM'
I
I
button on the control panel of the set for 3 seconds or more.
Adjustment Mode 1
(on
screen:
blue)
I
I
While pressing the PICTURE button of the remote control unit, press
the TV
1---------------l
I
SYSTEM button on the control panel of the set for 3 seconds or more.
Adjustment Mode
2
(on screen: yellow)
I
Resetting to Normal Mode
Do the reverse of section "Setting Procedure
to
Adjustment mode".
Setting to Standard Value
(conditions at the shipment from
a
factory)
While pressing the PICTURE button of-the remote control unit, press
the
TV SYSTEM and VIDEO/$ VIDEO buttons
on
the control
panel of the set at the same time for 3 seconds or more.
+B Voltage Adjustment
P-P.C. Board
1. Equipment to
be
used
Digital Voltmeter:
TPP1
- TPP6 - TPP7 (GND)
RGB
Signal
Generator: Cross
Hatch
Pattern
AGB input
2_ Initial conditions
+81
Voltage
Adjustment VA (R865): Center
Adjustment Mode:
Normal Mode
3. Adjustment
Procedures
-
32
-
(1) Receive a 33.750kHz Cross
Hatch
Pattern
signal.
(2)
Adjust
21 0V
ADJ
VA (A865) to set the voltage
of TPP1
to 210.0±0.5V.
(3) Check
that
the following each voltage is within the
standard value.
+82 (TPP2):
210.0+0.5/-1.0V
+B3 (TPP3): 41 .0±2. 0V
+B4
(TPP4):
18.3±
1.5V
+B5
(TPPS): 17.5±1.5V
+B6
(TPP6):
8.3±0.2V
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