JVC AV27533/S/R
Service Manual

AV-27320 AV-27330 AV-27S33

ADJUSTMENT OF WHITE BALANCE
Item WHITE BALANCE (Low Light) adjustment Measuring instrument Signal gener ator Test point Ad justment part R CUTOFF (S11) G CUTOFF (S12) B CUTOFF (S13) BRIGHT(S01) SCREEN VR [ in HVT] Description 1. Receive the blac k and white signal ( color off ). 2. Select the [LOW LIGHT] MODE from the SERVICE MENU. 3. Set the initial setting value of �R CUTOFF�, �G CUTOFF� �B CUTOFF� and BRIGHT. 4. Display a single horizontal line by pressing the � 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 � to � keys of the remote c ontrol unit. 8. Turn the screen VR until the single horizontal line is displayed faintly. 9. Press the � 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 � EXIT key is the cancel key for the WHIT E BALANCE.

[LOW LIGHT]

BRIGHT ***

*** ***

RE M OTE CONTRO L UNIT

No . S11 S12 S13 S01

Setting item R CUT OFF G CUT OFF B CUT OFF BRIGHT

Variable range 0 �255 0�255 0�255 0�127

Initial setting value 50 50 50 64

H.LINE O N

H.LINE O FF

EXIT

1
R CUT F OF

2
G CUT F OF

3
B CUTO FF

4
R CUT F OF

5
G CUT F OF

6
B CUTO FF

7

8

9

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