ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURENO. FUNCTIONNO.FUNCTION
01OSD H POSI23H POSI MIN
Read and perform these adjustments when repairing the
02OSD V POSI24V POSI
circuits or replacing electrical parts or PCB assemblies.
03R DRIVE (N)25V POSI MAX
CAUTION04R CUT OFF (N)26V POSI MIN
05G DRIVE (N)27BACKLIGHT CENTER
YUse an isolation transformer when performing any06G CUT OFF (N)28BACKLIGHT MAX
service on this chassis.07B DRIVE (N)29BACKLIGHT MIN
YWhen removing a PCB or related component, after08B CUT OFF (N)30BRIGHT CENTER
unfastening or changing a wire, be sure to put the wire09R DRIVE (C)31BRIGHT MAX
back in its original position.10R CUT OFF (C)32BRIGHT MIN
11G DRIVE (C)33TINT CENTER
YWhen you exchange IC and Transistor with a heat sink,
12G CUT OFF (C)34CONTRAST CENTER
apply silicon grease on the contact section of the heat
13B DRIVE (C)35CONTRAST MAX
sink. Before applying new silicon grease, remove all the
14B CUT OFF (C)36CONTRAST MIN
old silicon grease. (Old grease may cause damage to the15R DRIVE (W)37CONTRAST 40
IC and Transistor).16R CUT OFF (W)38COLOR CENTER
17G DRIVE (W)39COLOR MAX
Prepare the following measurement tools for electrical18G CUT OFF (W)40COLOR MIN
adjustments.19B DRIVE (W)41TEXT H POIS
20B CUT OFF (W)42TEXT V POIS
1. Pattern Generator21H POSI43DAC VCOM
22H POSI MAX
2. BASIC ADJUSTMENTS
Fig. 2-2
On-Screen Display Adjustment
1.Set the VOLUME to minimum.
2-1: WHITE BALANCE
2.Press the VOL. DOWN button on the set and the
1.Place the set in Aging Test for more than 15 minutes.
channel button (9) on the remote control for more than
2.Receive the gray scale pattern from the Pattern
2 seconds to display adjustment mode on the screen as
Generator.
shown in Fig. 2-1.
3.Press the INPUT SELECT button on the remote control
to set to the AV mode.
4.Using the remote control, set the brightness and contrast
to normal position.
PALTUNER5.Activate the adjustment mode display of Fig. 2-1 and
16:9press the channel button (03) on the remote control to
select "R DRIVE (N)".
6.Press the CH. UP/DOWN button on the remote control to
select the "R CUT OFF(N)", "G DRIVE(N)", "G CUT
OFF(N)", "B DRIVE(N)", "B CUT OFF(N)", "R DRIVE(C)",
01 OSD H POSI21"R CUT OFF(C)", "G DRIVE(C)", "G CUT OFF(C)", "B
DRIVE(C)", "B CUT OFF(C)", "R DRIVE(W)", "R CUT
OFF(W)", "G DRIVE(W)", "G CUT OFF(W)", "B
DRIVE(W)" or "B CUT OFF(W)".
Fig. 2-1
7.Adjust the VOL. UP/DOWN button on the remote control
3.Use the UP/DOWN button or Channel button (0-9) onto whiten the R CUT OFF(N), G DRIVE(N), G CUT
the remote control to select the options shown inOFF(N), B DRIVE(N), B CUT OFF(N), R DRIVE(C), R
Fig. 2-2.CUT OFF(C)", G DRIVE(C), G CUT OFF(C), B
4.Press the MENU button on the remote control to endDRIVE(C), B CUT OFF(C), R DRIVE(W), R CUT
the adjustments.OFF(W), G DRIVE(W), G CUT OFF(W), B DRIVE(W)
5.To display the adjustment screen for TUNER, AV,and B CUT OFF(W) at each step tone sections equally.
COMPONENT, HDMI and PC mode, press the INPUT8.Perform the above adjustments 6 and 7 until the white
SELECT button on the remote control to set to thecolor is achieved.
TUNER, AV, HDMI and PC mode.
6.Press the VOL.DOWN button on the set and the
channel (9) on the remote control for more than 2
seconds.
D-1 |
ACEC
