JVC AV32F704/AZA
Service Manual

4.7.5 VIDEO CIRCUIT Item WHITE BALANCE (Low Light) Measuring instrument Signal generator Remote control unit Test point Adjustment part [1.V/C (S)] S01: BRIGHT S11: R CUTOFF S12: G CUTOFF S13: B CUTOFF [7.LOW LIGHT] SCREEN VR [in HVT]
LOW LIGHT adjustment mode

Description (1) (2) (3) (4) Receive the black and white signal ( color off ). Enter the SERVICE MENU. Select the 1.V/C (S). Confirm the initial setting value of < S11 > (R CUTOFF), < S12 > (G CUTOFF), < S13 > (B CUTOFF) and < S01 > (BRIGHT). Return the SERVICE MENU and select the 7.LOW LIGHT. Display a single horizontal line by pressing the [1] key. Turn the SCREEN VR all the way to the left. Turn the SCREEN VR gradually to the right from the left until either one of the red, blue or green colors appears faintly. Adjust the two colors which did not appear until the single horizontal line that is displayed becomes white using the [4] ~ [9] keys. Turn the SCREEN VR until the single horizontal line is displayed faintly. Press the [2] key to cancel the single horizontal line mode. Adjust the BRIGHT level to become the black component shines white slightly. Confirm that whether the color ingredient of R, G, or B is visible to the black component, which shines white slightly. When the color ingredient can be seen, two colors other than a visible color are adjusted, and it is made to look white. Return the value of < S01 > to initial setting value.

(5) (6) (7) (8)

(9)
SETTING ITEM
BRIGHT

SETTING VALUE

(10) (11)

R CUTOFF

SETTING VALUE

G CUTOFF

B CUTOFF

(12) (13)

SINGLE HORIZONTAL LINE

(14)

(15)

� The [3] (EXIT) key is the cancel key for the WHITE BALANCE.
REMOTE CONTROL UNIT

H.LINE ON

H.LINE OFF

EXIT

Adjustment item S11: R CUT OFF S12: G CUT OFF S13: B CUT OFF S01: BRIGHT

Initial setting value
R CUTOFF G CUTOFF B CUTOFF

30 30 30 64
R CUTOFF G CUTOFF B CUTOFF

1-32 (No.52113)