Read Sharp LC-28HM2E (serv.man2) Service Manual online
38
LC-28HM2
AN-28SP2
4. Test pattern display
The gradation test pattern held by inside LCD controller can be displayed.
It is useful to check the display function of the display unit.
Set “1” in the 2nd line of the OSD for display.
It is useful to check the display function of the display unit.
Set “1” in the 2nd line of the OSD for display.
00
00
0
0
0
←
Set this to 1 to display the test pattern. Set 0 again to return.
00
00
0
0
0
Test pattern setting remains after switching off the power. Make sure to set “0” again in the 2nd
line of the OSD to recover initial setting before terminating the process adjustment mode.
Then switch off the power.
line of the OSD to recover initial setting before terminating the process adjustment mode.
Then switch off the power.
5. OSD menu display and items in manual adjustment
(1) D/A converter
Address
Item
MIN
MAX
Initial setting
Remarks
10
BAL
00
FF
7F
Balance
11
VOL
00
FF
00
Volume
12
BASS
00
FF
7F
Bass
13
TREB
00
FF
7F
Treble
14
LOUD
00
FF
FF
Loudness
15
100HZ
00
FF
00
16
400HZ
00
FF
00
17
1KHZ
00
FF
00
18
4KHZ
00
FF
00
19
10KHZ
00
FF
00
1A
SVOL
00
FF
00
Sub volume
»
Sound
Address
Item
MIN
MAX
Initial setting
Remarks
1C
V1H
00
FF
00
1D
V1L
00
FF
EA
1E
V34H
00
FF
85
1F
V34L
00
FF
CB
20
V41H
00
FF
87
21
V41L
00
FF
C3
22
V64H
00
FF
89
23
V64L
00
FF
AE
24
V128H
00
FF
8C
25
V128L
00
FF
82
26
V183H
00
FF
91
27
V183L
00
FF
72
28
V234H
00
FF
91
29
V234L
00
FF
59
2A
V247H
00
FF
94
2B
V247L
00
FF
47
2C
V255H
00
FF
94
2D
V255L
00
FF
42
2E
V256H
00
FF
94
2F
V256L
00
FF
3D
32
COMBIAS
00
FF
6A
33
M5VADJ
00
FF
AF
»
Gradation
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