ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURENO. FUNCTIONNO.FUNCTION
01H POSI OSD23V POSI 50Hz
Read and perform these adjustments when repairing the
02V POSI OSD24V POSI 60Hz
circuits or replacing electrical parts or PCB assemblies.03R DRIVE (N)25BAK LIGHT CENT
04R CUTOFF (N)26BAK LIGHT MAX
CAUTION05G DRIVE (N)27BAK LIGHT MIN
06G CUTOFF (N)28BRIGHT CENT
?Use an isolation transformer when performing any07B DRIVE (N)29BRIGHT MAX
service on this chassis.08B CUTOFF (N)30BRIGHT MIN
?When removing a PCB or related component, after09R DRIVE (C)31TINT
10R CUTOFF (C)35CONTRAST CENTER
unfastening or changing a wire, be sure to put the wire
11G DRIVE (C)36CONTRAST MAX
back in its original position.12G CUTOFF (C)37CONTRAST MIN
?When you exchange IC and Transistor with a heat sink,13B DRIVE (C)38COLOR CENT
14B CUTOFF (C)39COLOR MAX
apply silicon grease on the contact section of the heat
15R DRIVE (W)40COLOR MIN
sink. Before applying new silicon grease, remove all the16R CUTOFF (W)41H POSI TEXT
old silicon grease. (Old grease may cause damage to17G DRIVE (W)42V POSI TEXT
the IC and Transistor).18G CUTOFF (W)43CONTRAST 35
19B DRIVE (W)44BRIGHT (3F54)
20B CUTOFF (W)45CONTRAST (3F55)
Prepare the following measurement tools for electrical
21H POSI 50Hz46SRCTOP
adjustments.22H POSI 60Hz47DFEA VIMGVT
Fig. 2-2
1. Pattern Generator
2-1: CONTRAST MAX
2. BASIC ADJUSTMENTS
1.Receive the monoscope pattern. (VIDEO Input)
On-Screen Display Adjustment2.Press the INPUT SELECT button on the remote control
to set to the AV mode.
1.Set the VOLUME to minimum.
3.Press the PICTURE SIZE button on the remote control
2.Press the VOL. DOWN button on the set and the
to select the FULL screen mode.
channel button (9) on the remote control for more than
4.Using the remote control, set the brightness and
2 seconds to display adjustment mode on the screen as
contrast to normal position.
shown in Fig. 2-1.
5.Activate the adjustment mode display of Fig. 2-1 and
press the channel button (36) on the remote control to
select "CONT MAX".
6.Check if the step No. CONT MAX is "131".
TV7.Receive a broadcast and check if the picture is normal.
AUTO
8.Receive the monoscope pattern. (RF Input)
9.Press the INPUT SELECT button on the remote control
to set to the TV mode. Then perform the above
adjustments 3~5.
10.Check if the step No. CONT MAX is "179".
01 H POSI OSD34611.Playback the DVD(480i) disc. (COMPONENT Input)
12.Press the INPUT SELECT button on the remote control
to set to the COMPONENT mode. Then perform the
Fig. 2-1above adjustments 3~5.
13.Check if the step No. CONT MAX is "160".
3.Use the UP/DOWN button or Channel button (0-9) on14.Playback the DVD(480i) disc. (HDMI Input)
the remote control to select the options shown in15.Press the INPUT SELECT button on the remote control
Fig. 2-2.to set to the HDMI mode. Then perform the above
4.Press the MENU button on the remote control to endadjustments 3~5.
the adjustments.16.Check if the step No. CONT MAX is "164".
5.To display the adjustment screen for TV, AV,
COMPONENT and HDMI mode, press the INPUT
SELECT button on the remote control.
Press the VOL.DOWN button on the set and the
channel (9) on the remote control for more than 2
seconds.
D-1 |
ACEC
