JVC AV29A10EUS, Руководство по обслуживанию

Страница: 27 / 67

No. 51818
AV29A10EUS
27
Item
Measuring
instrument
Test point Adjustment part Description
Adjustment
of VCO
for colour
decoder
Signal
generator
Remote
control unit
10. VCO
1. Input a PAL full field colour bar signal (75% white) from the EXT
terminal.
2. Select 2. V/C from the SERVICE MENU.
3. Select 10. VCO adjustment with the FUNCTION UP/DOWN key.
4. Press the OK key then automatically optimized.
DEFLECTION CIRCUIT ADJUSTMENT
There are 3 aspect modes (
(
( (
(
REGULAR,
)
) )
)
ZOOM,
*
* *
*
16 : 9 ) of the adjustment ( 1 ) 100Hz i mode, ( 2 ) 60Hz p and ( 3 ) 120Hz i
mode
!!!!! !!!!! !!!!! !!!!!! !! !
depending upon the kind of signals ( vertical frequency 100Hz i / 60HZ p / 120Hz i ). Character “i” is an omission of
“inter lace scan”, and character “p” is an omission of “progressive scan”.
"
When the 100Hz REGULAR mode has been established, the setting of other modes will be done automatically.
However, if the picture quality has not been optimized, adjust each mode again, respectively.
"
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.
Item
Measuring
instrument
Test point Adjustment part Description
Adjustment
of V-SHIFT
Signal
generator
Remote
control unit
1. V- SHIFT
"
Set the ASPECT MODE to REGULAR.
1. Receive a circle pattern signal of vertical frequency 50Hz.
2. Select 4.DEF from the SERVICE MENU.
3. Select 1.V-SHIFT with the FUNCTION UP/DOWN key.
4. Adjust V-SHIFT to become A = B .
5. Check the adjustment condition in other zoom mode. If it is a
wrong condition, re-adjust in “FULL” mode with 1. V-SHIFT.
6. Press the MENU key and memorize the set value.
A
B