JVC AV-48P777/H Service Manual page 37

4.7.3.3 DEFLECTION ADJUSTMENT [2. TV-Micro Service]
Measuring
Item
instrument
V. POSITION / Signal
V.SIZE / generator
V.LINEARITY
adjustment Remote
control unit
C
C
C
H. POSITION Signal
adjustment generator
Remote
control unit
D
H. SIZE Signal
adjustment generator
Remote
control unit
Test point Adjustment part
[1. Adjust]
D001 : V. SIZE
D009 : V. LIN
D011 : V. CENT
no-signal area
no-signal area
48"
56"
55mm 75mm
[1.Adjust]
D020 : H. CENT
E
[1.Adjust]
D005 : H. SIZE
Screen size
(92%)
Picture size
100%
• To memorize every time after finish adjustment on each
mode.
(1) Receive NTSC circle pattern signal.
(2) Select FULL mode with [ASPECT] key.
(3) Switch off the convergence circuit.
(4) Enter TV-Micro Service [1. Adjust].
(5) Select <D001> (V. SIZE), <D009> (V. LIN) and
<D011> (V. CENT).
A (6) Adjust <D001>, <D009> and <D011> to make A = B
(precision ±2mm), and adjust to make C same value
as table.
(7) Press [MUTING] key to memorize the set value.
(8) After adjustment, switch on the convergence circuit.
NOTE :
B
Do not adjust <D007> (V. SCORE), if it is different
vertical position after adjust vertical linearity, to adjust
vertical position.
NOTE :
Refer to the FLOWCHART OF ADJUSTMENT for the
way to switch off/on the convergence circuit..
(1) Receive NTSC circle pattern signal.
(2) Select FULL mode with [ASPECT] key.
(3) Switch off the convergence circuit.
(4) Enter TV-Micro Service [1. Adjust].
(5) Select <D020> (H. CENT).
(6) Adjust <D020> to make D = E as shown figure.
(7) Press [MUTING] key to memorize the set value.
(8) After adjustment, switch on the convergence circuit.
NOTE :
Refer to the FLOWCHART OF ADJUSTMENT for the
way to switch off/on the convergence circuit.
(1) Receive NTSC crosshatch signal.
(2) Select FULL mode with [ASPECT] key.
(3) Switch off the convergence circuit.
(4) Enter TV-Micro Service [1. Adjust].
(5) Select <D005> (H. SIZE).
(6) Adjust <D005> to make sure that the vertical screen
size of the picture size is 92%.
(7) Press [MUTING] key to memorize the set value.
(8) After adjustment, switch on the convergence circuit .
NOTE :
Refer to the FLOWCHART OF ADJUSTMENT for the
way to switch off/on the convergence circuit.
Description
(No.YA455)1-37