SHARP 21LF 90RU PAL-SECAM SERVICE ADJUSTMENTS
AK-44 CHASSIS
SERVICE MODE ENTRY
- Press "Menu" button on the remote control.
- Press digit keys [4>7>2>5] in sequence to enter service mode.
Service Mode Screen.
- Use the 'Cursor Up' | Cursor Dn' buttons to move between the registers.
- User 'Cursor Left | Cursor Right' buttons to change the data value to selected item.
- To "EXIT' Service Mode, switch OFF the set by main Power Switch.
- It is not required to memorize the adjustments. Data are stored automatically.
USING COLORED BUTTONS
- By using four colored buttons on the remote control, different features or adjsut may be accessed.
AVL
- Press the 'RED' button to activate or deactivate the Automatic Volume Level {AVL} between different broadcast channels.
GEOMETRY MENU
- Press 'GREEN' button in order to change from the main service menu to the Geometry Menu.
- To return to Main Menu, it should be pressed "Menu" button.
- In the bottom area of this menu, it can be seen 'AUTO'. By pressing 'WIDE MODE' button, it changes to (4:3) or (16:9) format.
- To perform the 'Geometry' adjustments, select the most suitable option.
Auto, entering 4:3 or 16:9 signal and proceeding with adjustments as below.
4:3, entering 4:3 signal and proceeding with adjustments as below.
16:9, entering 16:9 signal and proceeding with adjustments as beow.
GEOMETRY TABLE
DEFAULT VALUES
|
|||||
REGISTER
|
PARAMETER
|
A51EFS13X191
|
A51E;D032X001
|
||
4:3
|
16:9
|
4:3
|
16:9
|
||
VSIZ
|
VERTICAL SIZE
|
35
|
62
|
24
|
50
|
VPOS
|
VERTICAL POSITION
|
11
|
16
|
12
|
16
|
VSCO
|
NOT USED
|
14
|
14
|
14
|
14
|
VCCO
|
NOT USED
|
7
|
7
|
7
|
7
|
H SIZ
|
NOT USED
|
10
|
9
|
30
|
11
|
HPOS
|
HORIZONTAL POSTION
|
33
|
33
|
40
|
39
|
HPIN
|
NOT USED
|
19
|
15
|
27
|
15
|
HCCO
|
NOT USED
|
0
|
0
|
0
|
0
|
HTRP
|
NOT USED
|
10
|
10
|
3
|
10
|
VZSZ
|
NOT USED
|
3
|
2
|
7
|
2
|
SCREEN ADJUSTMENT
- Press the 'Yellow' button in order to prepare the system for screen adjustments. [Vertical scan disable]. Adjust horizontal line, via screen pot-meter, as thin as possible. To return to main menu Menu button should be pressed.
SERVICE ADJUSTMENT TABLE
Register
|
Parameter
|
Notes
|
Default
|
Values
|
.
|
A51EFS13X191
|
A51ELD032X001
|
||
OSD
|
OSD HORIZONTAL POSITION
|
70
|
81
|
|
IF1
|
IF COARSE ADJSUT
|
X
|
X
|
|
IF2
|
IF FINE ADJUST
|
X
|
X
|
|
IF3
|
IF COARSE ADJUST FOR L-PRIME
|
X
|
X
|
|
IF4
|
IF FINE ADJSUT 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 60Hz
|
(-30)
|
(-32)
|
|
VPOF
|
VERTICAL POSITION OFFSET FOR 60Hz
|
2
|
1
|
|
HSOF
|
VERTICAL SIZE OFFSET FOR 60Hz
|
(-22)
|
(-22)
|
|
HOPF
|
HORIZONTAL POSITION OFFSET FOR 60Hz
|
(-18)
|
(-18)
|
|
HTOF
|
HORIZONTAL TRAP CORRECTION OFFSET FOR 60Hz
|
(-19)
|
(-20)
|
|
WR
|
WHITE POINT ADJUST-RED
|
49
|
42
|
|
WG
|
WHITE POINT ADJUST-GREEN
|
45
|
41
|
|
WB
|
WHITE POINT ADJUST-BLUE
|
42
|
42
|
|
BR
|
BIAS FOR RED
|
31
|
31
|
|
BG
|
BIAS FOR GREEN
|
31
|
31
|
|
APR
|
APR THRESHOLD
|
10
|
4
|
|
BRI
|
FACTORY SETTING BRIGHTNESS
|
31
|
31
|
|
CON
|
FACTORY SETTING CONTRAST
|
49
|
49
|
|
COL
|
FACTORY SETTING COLOR
|
26
|
26
|
|
SHA
|
FACTORY SETTING SHARPNESS
|
6
|
6
|
|
HUE
|
FACTORY SETTING HUE
|
31
|
31
|
|
VOL
|
FACTORY SETTING VOLUME
|
9
|
9
|
|
WR-R
|
WHITE POINT ADJUST-RED [RGB MODE]
|
48
|
30
|
|
WG-R
|
WHITE POINT ADJUST GREEN [RGB MODE]
|
53
|
53
|
|
WB-R
|
WHITE POINT ADJUST-BLUE [RGB MODE]
|
37
|
40
|
|
FMP1
|
FM PRESCALER WHEN AVL IS OFF
|
STEREO ONLY
|
11
|
11
|
NIP1
|
NICAM PRESCALER WHEN AVL IS OFF
|
STEREO ONLY
|
25
|
25
|
SCP1
|
SCART PRESCALER WHEN AVL IS OFF
|
11
|
11
|
|
SEC2
|
SCART PRESCALER WHEN AVL IS ON FOR SECAM /L MONO
|
17
|
17
|
|
F1H
|
HIGH BYTE OF CROSSOVER FREQUENCY FOR VHF-1-VHF3
|
MEANIFUL FOR ONLY PLL TUNER
|
||
It is necessary let the TV set in the program number that will appear
for the first time, because the A.P.S does not preset this selection.
- Enter Service Mode.
- Access TXT1 register by Cursor Up | Cursor Dn.
- Press '7' button on the remote control in order to activate the auto programming system.
- Exit the service mode, by the 'Menu' button.
- Switch the TV OFF, using the mains switch.
EEPROM INITIALIZATION
If the EEPROM IC {IC500} is replaced, it will come fully programmed,
and there fore it is not necessary to initialize the new device. In
some circumstances the EEPROM may become corrupted in use i.e. static
discharge of lightning strike. If this happens the EEPROM has to be
replaced.
HOTEL MODE FUNCTIONS
- The Hotel Mode deactivates Install and Program features from the Main Features Menu. It is necessary to program the channel setting, tuning and storing, after this feature have deactivated.
- Enter the Service Mode.
- Access to OP4 register by Cursor Up/Dn.
- Press [4] button on the remote control in order to activate the Hotel Mode.
- Exit the service mode by "Menu" button.
- Enter again the Service Mode but a new sequence of numbers [1>3>2>5] consecutively. The following On-Screen display appears.
- Activate the Hotel Mode as the above top picture.
- Proceed with the required volume limit.
- Exit service mode
- ICs _ {ST92195_STV224X_UV1315_UV1316_UV1336_TDA2766|TDA7266L_TDA8174_TDA6107_MC44608_MSP34X0G_24C08TO ENTER SERVICE MODE
- Press "Menu" button on the remote control.
- Press {4,7,2,5} consecutively.
Service mode Screen.
Use the Cursor Up | Dn button to move between registers.
Use Cursor Left | Right button to change the data value to selected item.
Switch the TV "OFF' to "EXIT" service mode.
