JVC RM-C326 Service Manual page 26

AV-27F703
AV-27F713
AV-27F803
ADJUSTMENT OF VIDEO / CHROMA CIRCUIT
Measuring
Item
instrument
WHITE Signal
BALANCE gener ator
(Low Light)
adjustment
[LOW LIGHT]
BRIGHT
***
[H.LINE SCREEN ]
RE M OTE CONT ROL UNIT
H.LIN E ON H.LIN E OFF
1
R C UTOFF G C UTOFF
4
R C UTOFF G C UTOFF
7
26
Test point Ad justment part
S01:BRIGHT
S11:R CUTOFF
S12:G CUTOFF
S13:B CUTOFF
SCREEN VR
[ in HVT]
***
*** ***
EXIT
2 3
B C UTOFF
5 6
B C UTOFF
8 9
1. Receive the blac k and white signal ( color off ).
2. Select the LOW LIGHT mode from the SERVICE MENU.
3. Confirm the initial setting value of R CUTOFF, G CUTOFF,
B CUT OFF and BRIGHT.
0. Display a single horizontal line by pressing the ① ① ① ① key of the
remote control unit.
5. Turn the screen VR all the way to the left.
6. Turn the screen VR gradually to the right from the left until
either one of the red, blue or green colors appears faintly.
7. Adjust the two colors which did not appear until the single
horizontal line that is displayed bec omes white using the ④ ④ ④ ④
to ⑨ ⑨ ⑨ ⑨ keys of the remote c ontrol unit.
8. Turn the screen VR until the single horizontal line is displayed
faintly.
9. Press the ② ② ② ② key to cancel the single horizontal line mode.
10. Adjust the BRIGHT lev el to become the blac k c omponent
shines white slightly.
11. Confirm that whether the color ingredient of R, G, or B is visible
to the black component, which shines white slightly
12. When the color ingredient can be s een, two colors other than a
vis ible c olor are adjusted, and it is made to look white.
13. Return the value of BRIGHT to initial s etting value.
● The ③ ③ ③ ③ EXIT key is the cancel key for the WHIT E BALANCE.
No . Setting item
S11 R CUT OFF
S12 G CUT OFF
S13 B CUT OFF
S01 BRIGHT
No.52005
Description
Variable Initial setting
range value
0～255
30
0～255 30
0～255 30
0 ～ 127
64