Monday, September 24, 2012

SHARP 21LF 90RU PAL-SECAM SERVICE ADJUSTMENTS

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

















AUTO PROGRAMMING SYSTEM SETUP
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.
  1. Enter the Service Mode.
  2. Access to OP4 register by Cursor Up/Dn.
  3. Press [4] button on the remote control in order to activate the Hotel Mode.
  4. Exit the service mode by "Menu" button.
  5. 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