JVC AV-48P777/H Service Manual page 35

4.7.3 DEFLECTION & CONVERGENCE ADJUSTMENT
• The adjustment using the remote control unit is made on the basis of the initial setting values.
• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
• At first the adjustment in FULL mode should be done, then the data for the other ASPECT mode is corrected in the respective value
at the same time.
4.7.3.1 FLOWCHART OF ADJUSTMENT
CAUTION:
All adjustments of the DEFLECTION circuit for this model should be carried out under the status without convergence operation.
To enter the mode without convergence operation, the remote control unit (with LC display) [LP20873-009] is required.
The required input code to switch off the convergence circuit is "0FE1", the method is described as follows.
(1) Take out the batteries from the remote control unit if the batteries are inserted.
(2) Insert the batteries while pressing and holding [4], [5] and [6] keys simultaneously.
(3) While viewing the LC display of the remote control unit, set the value to "0" using the [START DEBUT +] / [START DEBUT -]
keys.
(4) In the same manner, set the value to "F" using the [STOP FIN +] / [STOP FIN -] keys.
(5) In the same manner, set the value to "E" using the [DATE +] / [DATE -] keys.
(6) In the same manner, set the value to "1" using the [PR +] / [PR -] keys.
(7) When completed with all of the above settings, press the [Transmission] key.
(8) The code to switch on the convergence circuit is "0FE3". After adjustments, you should transmit this code in the same manner.
NOTE:
Please order to your parts center if you do not have this remote control unit.
Parts number: LP20873-009A (Remote control unit for VCR)
As a result, you can get the screen as shown in bellow figure. Adjust the DEFLECTION circuit in order of the steps indicated by the
downward arrows.
NOTE:
When every adjustment of the DEFLECTION circuit has completed, start the adjustment of convergence.
Overall position & size
(If center deviated, readjust)
(If center deviated, readjust)
Corner (Final adjust)
Crosshatch Completed
(From a collection of squares)
Adjustment
location
sequence
Center
Center perimeter
Perimeter
R and B only
PREPARATION
Without
convergence
operation
SCREEN TILT
H.POSITION
/SIZE
(coarse)
RASTER
CENTERING
DEFLECTION
V.POSITION
/ SIZE
/ LINEARITY
H.POSITION
H.SIZE
SIDE PIN
TRAPEZIUM
CONVERGENCE
CONVERGENCE
PHASE
OVERALL
CONVERGENCE
( LINE / POINT )
(No.YA455)1-35