Sharp 21LF-90N, Service Manual

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CHASSIS
15.2 Registers Details
OP1 – Peripheral Options
7 NOT USED
6 1, Display “AV-3” as “F-AV”
0, Display “AV-3” as “B-AV”
5 1, Turn back TV mode after the last AV (with AV key)
0, Turn back first AV mode after the last AV
4 1, SVHS is available in AV key stream
0, SVHS is NOT available in AV key stream
3 1, RGB is available in AV key stream
0, RGB is NOT available in AV key stream
2 1, AV-3 is available in AV key stream
0, AV-3 is NOT available in AV key stream
1 1, AV-2 is available in AV key stream
0, AV-2 is NOT available in AV key stream
0 0 1, AV-1 is available in AV key stream
0, AV-1 is NOT available in AV key stream
OP2 – Reception Standard Options
7 1,
3-button keyboard (V-, P+, V+)
0, 4/5 button keyboard (V-, V+, P-, P+, Menu)
6 1, L/L’ is available
0, L/L’ is not available
5 1, I is available
0, I is not available
4 1, DK is available
0, DK is not available
3 1, BG is available
0, BG is not available
2 1 0 RESERVED (Keep as 000)
OP3 – Video Options
7 6 Xtal Configuration
00, 1 Xtal PAL 4.43
01, 2 Xtal PAL/NTSC 4.43/3.58
10, 1 Xtal PAL/SEC/NTSC 4.43
11, 2 Xtal PAL/SEC/NTSC 4.43/3.58
5 1, Enable Blue back when no signal in AV modes
0, No blue back in AV modes
4 1, White Insertion is ON
0, White Insertion is OFF
3 1, Blue Background when no signal
0, Disable Blue Background
2 1, Semi-transparent background for menu
0, Solid Menu background for menu
1 1, Black Stretch is ON
0, Black Stretch is OFF
0 1, APR is ON
0, APR is OFF