Service Adjustments - Sharp 37DT Service Manual

SERVICE ADJUSTMENTS

• SERVICE MODE FUNCTION
This mode function is provided to assist with the settings of those adjustments that may vary from one Picture Tube to
another, or between models.
In order to use the Service Mode
1 . Press main switch to OFF.
2. Connect Test Pattern signal to antenna terminal.
3. Press V< and CH /\ buttons and main switch to ON simultaneously.
4. -SERV-will appear on screen. Service mode is now entered.
5. Select adjustment using buttons f\ CM
To exit service mode, press main switch to OFF or press MENU button on R/C.
Displayed Hexadecimal
on Screen
-SERV-
a. AGC 00~3F
b. AFT 00 ~ 7F
c. H-SHFT 00 ~ 3F
d. V-SHFT 00 ~ 3F
e. V-AMPL 00-3F
f. V-SLOP 00 ~ 3F
g. V-DLY 00-CF
h. GAIN R 00 ~ 3F
i. GAIN G 00-3F
j. GAINB 00-3F
k. NVM
6. For "a" thru j selections.
Adjustment to a selection can be made by pressing buttons
A colour bar is displayed on the OSD to indicate the adjustment position, together with hexadecimal numbers (Not for
Gil adjustment).
For "k" Selection.
NVM storage location settings variants.
In order to have access to the desired storage location, buttons
a higher or lower location, respectively. Bear in mind that, for storage location indication a hexadecimal numerical system
is used, instead of a decimal system.
0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F, 10, 1 1 , .........19, 1A, 1B, 1C, 1D, 1E,1F, 20, 21,.......... 99, 9A, 9B, 9C, 9D, 9E,
9F, AO, A 1 , .......... BO,.......... CO, .......... DO, .......... EO, .......... FO, F1, F2, F3, F4, F5, F6, F7, F8, F9, FA, FB, FC, FD,
FE,FF.
From the last location FF to the first 00 can be reached by increasing and from first to last by decreasing. Once the storage
location to be varied has been selected, its value can be modified by the bits that form part of the storage location numerical
buttons, numbers [0] to \7\, respectively. This switches its binary number from and between 0 and 1 each time one
of the buttons is Dressed.
V.
Range
Indicates operative Service Mode.
Auto Gain Control.
Auto Frequency Control
Horizontal Position shift
Vertical Position shift.
Vertical Amplitude shift.
Vertical Symmetry alteration.
VIDEO Delay.
Red Gain.
Green Gain.
Blue Gain.
Access to NVM memory.
Function