ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE
NO. FUNCTIONNO.FUNCTIONNO.FUNCTION
00 OSD H20CORNER40R-Y PHASE
Read and perform these adjustments when repairing the
01 CUT OFF21C.PARA41G-Y GAIN
circuits or replacing electrical parts or PCB assemblies.02 H.POSI22C.SAW42G-Y PHASE
03 V.POSI23V.SYMM43BRI.CENT
CAUTION04 H. SIZE24R.BIAS44BRI.MAX
05 V. SIZE25G.BIAS45BRI.MIN
Y Use an isolation transformer when performing any service06 V. LIN26B.BIAS46CONT.CENT
on this chassis.07 V-EHT27R/G.DRV47CONT.MAX
08 H-EHT28B/R.DRV48CONT.MIN
Y Before removing the anode cap, discharge electricity09 V-BLK P29R.BIAS(C)49COL.CENT
because it contains high voltage.10 V-BLK S30G.BIAS(C)50COL.MAX
11 V.CENT31B.BIAS(C)51COL.MIN
Y When removing a PCB or related component, after12 V.LIMIT32R/G.DRV(C)52SUB CONT
unfastening or changing a wire, be sure to put the wire13V.CORR33B/R.DRV(C)53TINT
14 V.S.CORR34R.BIAS(W)54SHARP.CENT
back in its original position.15 EW PARA35G.BIAS(W)55SHARP.MAX
Y When you exchange IC and Transistor with a heat sink,16TRAPEZIUM36B.BIAS(W)56SHARP.MIN
17 COR.TOP37R/G.DRV(W)57TILT.CENT
apply silicon grease on the contact section of the heat18 COR.BTM38B/R.DRV(W)58TEST STEREO
sink. Before applying new silicon grease, remove all the19S.CORR39R-Y GAIN59TEST AUDIO
old silicon grease. (Old grease may cause damages to theFig. 1-2
IC and Transistor.)
Prepare the following measurement tools for electrical2. BASIC ADJUSTMENTS
adjustments.
1. Oscilloscope2-1: CUT OFF
2. Digital Voltmeter1.Place the set in Aging Test for more than 15 minutes.
3. Multi-sound Generator2.Place the set in AV MODE without signal.
4. Pattern Generator3.Using the remote control, set the brightness and contrast
On-Screen Display Adjustmentto normal position.
4.Activate the adjustment mode display of Fig. 1-1 and
1. In the condition of NO indication on the screen.
press the channel button (01) on the remote control to
Press the VOL. DOWN button on the set and the Channel
select "CUT OFF".
button (9) on the remote control for more than 2 second to
5.Adjust the Screen Volume until a dim raster is obtained.
appear the adjustment mode on the screen as shown in
Fig. 1-1.
2-2: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
TV
THEATER WIDEA I
1.Place the set in Aging Test for more than 10 minutes.
2.Receive the gray scale pattern from the Pattern Generator.
3.Using the remote control, set the brightness and contrast
to normal position.
4.Activate the adjustment mode display of Fig. 1-1 and
00 OSD H7press the channel button (24) on the remote control to
Fig. 1-1select OR.BIAS�.
5.Press the CH. UP/DOWN button on the remote control to
3.Use the Channel UP/DOWN button or Channel buttonselect the OR.BIAS�, OG.BIAS�, OB.BIAS�, OR/G.DRV�, OB/
(0-9) on the remote control to select the options shownR.DRV�, OR.BIAS(C)�, OG.BIAS(C)�, OB.BIAS(C)�, OR/
in Fig. 1-2.G.DRV(C)�, OB/R.DRV(C)�, OR.BIAS(W)�, OG.BIAS(W)�,
4.Press the MENU button on the remote control to end theOB.BIAS(W)�, OR/G.DRV(W)� or OB/R.DRV(W)�.
adjustments.6.Adjust the VOL. UP/DOWN button on the remote control
5.To display the adjustment screen for AV, CS and HD-to whiten the R.BIAS(C), G.BIAS(C), B.BIAS(C), R/
MI mode, press the TV/VIDEO button on the remoteG.DRV(C), B/R.DRV(C), R.BIAS(W), G.BIAS(W),
control to set to the AV, CS and HD-MI mode. PressB.BIAS(W), R/G.DRV(W) and B/R.DRV(W)�at each step
the VOL.DOWN button on the set and the channel (9)tone sections equally.
on the remote control for more than 2 seconds.7.Perform the above adjustments 5 and 6 until the white
color is achieved.
D-1 |
ACEC
