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1.
BEFORE MAKING ELECTRICAL
ADJUSTMENTS
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
•
Use an isolation transformer when performing any service
on this chassis.
•
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
•
When you exchange IC and Transistor for a heat sink,
apply the silicon grease on the contact section of the heat
sink. Before applying new silicon grease, remove all the old
silicon grease. (Old grease may cause damage to the IC
and Transistor).
Prepare the following measurement tools for electrical
adjustments.
1. Oscilloscope
2. AC Voltmeter
3. Pattern Generator
4. Multi-Sound Signal Generator
On-Screen Display Adjustment
1.
Set the VOLUME to minimum.
2.
Press the VOL. DOWN button on the set and the Channel
button (9) on the remote control for more than 2 second
to appear the adjustment mode on the screen as shown
in Fig. 1-1.
Function
07 RCUT M
Step No.
TV
480i
TH-3
3.
Use the Channel UP/DOWN button or Channel button
(1-0) on the remote control to select the options shown
in Fig. 1-2.
4.
And, press the VOL. DOWN button on the set and the
Channel button (9) on the remote control for more than 2
second to appear the adjustment mode on the screen as
shown in Fig. 1-3.
5.
Use the Channel UP/DOWN button or Channel button
(1-0) on the remote control to select the options shown
in Fig. 1-4.
6.
Press the MENU button on the remote control to end the
adjustments.
7.
To display the adjustment screen for AV, CS and HD-MI
mode, press the TV/VIDEO button on the remote control
to set to the AV, CS and HD-MI mode.
Press the VOL.DOWN button on the set and the channel
(9) on the remote control for more than 2 second.
ELECTRICAL ADJUSTMENTS
15
Fig. 1-1
NO.
FUNCTION
07
RCUT M
08
GCUT M
09
BCUT M
10
DRI1 M
11
DRI2 M
12
MD6 M
13
DTHON M
14
DRREF M
15
RCUT2 M
16
GCUT2 M
17
BCUT2 M
18
GAINR M
19
GAING M
20
GAINB M
21
RCUT C
22
GCUT C
23
BCUT C
24
DRI1 C
25
DRI2 C
26
MD6 C
27
DTHON C
28
DRREF C
29
RCUT2 C
30
GCUT2 C
31
BCUT2 C
32
GAINR C
33
GAING C
34
GAINB C
35
RCUT W
01 OSD H
NO.
FUNCTION
01
OSD
05
G OFFSET
15
BACK LIGHT CENT
16
BACK LIGHT MAX
17
BACK LIGHT MIN
58
TEST STEREO
59
TEST AUDIO
D-1
NO
FUNCTION
.
36
GCUT W
37
BCUT W
38
DRI1 W
39
DRI2 W
40
MD6 W
41
DTHON W
42
DRREF W
43
RCUT2 W
44
GCUT2 W
45
BCUT2 W
46
GAINR W
47
GAING W
48
GAINB W
49
BRI CEN
50
BRI MAX
51
BRI MIN
52
CON CEN
53
CON MAX
54
CON MIN
55
COL CEN
56
COL MAX
57
COL MIN
58
TIN CEN
59
TIN MAX
60
TIN MIN
61
SHA CEN
62
SHA MAX
63
SHA MIN
Fig. 1-2
9
Fig. 1-3
Fig. 1-4
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