23
AK - 44
CHASSIS
14. SERVICE MENU
14.1 Service Menu entrance
All system, geometry and white balance alignments are performed in Service Mode. Before starting the service
mode alignments, make sure that all manual adjustments are done correctly.
To enter the service mode:
1. Press the MENU (30) button on the remote control gun. See figure 5.
2. Press digit keys 4, 7, 2 and 5 consecutively.
When the Service Mode is entered the following On Screen Display appears (figure 4):
Figure 4. Service Mode
Figure 5. Remote Control
To adjust the different registers:
1. Use the CURSOR UP (2) / DOWN (31) buttons to move between the registers. See the above right figure.
2. Use the CURSOR LEFT (32) / RIGHT (3) buttons to change the data. See figure 5.
To memorize the adjustment:
It is not required to memorize the adjustment. Data are stored automatically.
To exit the Service Mode:
Switch the TV off using the mains switch.
14.2 Service Adjustments
Default Values
Register
Parameter
Notes
A51EFS13X191 A51ELD032X001
OSD
OSD Horizontal Position
70
81
IF1
IF Coarse Adjust
X
X
IF2
IF Fine Adjust
X
X
IF3
IF Coarse Adjust for L-Prime
X
X
IF4
IF Fine Adjust for L-Prime
X
X
AGC
Automatic Gain Control
X
X
VLIN
Vertical Linearity
37
10
RGBH
RGB Horizontal Shift Offset
CVBS – RGB Horizontal
position compensation
8 7
VSOF
Vertical Size Offset for 60 Hz
-30
-32
VPOF
Vertical Position Offset for 60 Hz
2
1
HSOF
Horizontal Size Offset for 60 Hz
-22
-22
HPOF
Horizontal Position Offset for 60 Hz
-18
-18
HTOF
Horizontal Trap Correction Offset for 60 Hz
-19 -20
WR
White Point Adjust for RED
49
42
WG
White Point Adjust for GREEN
45
41
WB
White Point Adjust for BLUE
42
42
BR
Bias for RED
31
31
BG
Bias for GREEN
31
31
Содержание 21LF-90N
Страница 6: ...6 21LF 90N CHASSIS LAYOUT Mother Unit CRT Unit Headphone Unit ...
Страница 44: ...32 AK 44 CHASSIS 18 2 Schematic Diagram of Video Circuit 1 I H G F E D C B A 2 3 4 5 6 7 Page 33 ...
Страница 45: ...33 AK 44 CHASSIS 8 9 10 11 12 13 14 I H G F E D C B A Page 32 18 2 Schematic Diagram of Video Circuit ...
Страница 46: ...34 AK 44 CHASSIS 1 I H G F E D C B A 2 3 4 5 6 7 Page 35 18 3 Schematic Diagram of SMPS Circuit ...
Страница 47: ...35 AK 44 CHASSIS 8 9 10 11 12 13 14 I H G F E D C B A Page 34 18 3 Schematic Diagram of SMPS Circuit ...
Страница 48: ...36 AK 44 CHASSIS 1 I H G F E D C B A 2 3 4 5 6 7 18 4 Schematic Diagram of Audio Circuit ...
Страница 49: ...37 AK 44 CHASSIS 8 9 10 11 12 13 14 I H G F E D C B A 18 5 Schematic Diagram of Deflection Circuit ...
Страница 50: ...38 AK 44 CHASSIS 1 I H G F E D C B A 2 3 4 5 6 7 Page 39 18 6 Schematic Diagram of Scart AV Front Circuits ...
Страница 52: ...40 AK 44 CHASSIS 1 I H G F E D C B A 2 3 4 5 6 7 18 7 Schematic Diagram of CRT Socket Circuit ...
Страница 55: ...43 AK 44 CHASSIS Notes ...
