JVC PD-42WV74 Service Manual page 47

4.8.2 RECEIVER UNIT
Mesuring
Item
instrument
BLACK Remote control
LEVEL unit
Signal generator
Item No. Setting value
F46 090
F47 016
F48 016
Adjust the 0% black to maximum brightness
Test point Adjustment part
[8.PP]
ADM013: (NO DISPLAY)
(G offset)
[1. PICTURE/SOUND]
S13: RDRV (R DRIVE)
S15: GDRV (G DRIVE)
S17: BDRV (B DRIVE)
S19: CUTR (R CUTOFF)
S21: CUTG (G CUTOFF)
S23: CUTB (B CUTOFF)
F44: (NO DISPLAY)
(Picture control)
F45: (NO DISPLAY)
(Picture control mode sw)
F46: OUT LV.
(Output level upon
detection)
F47: LMT BTM
(Minimum value upon
detection)
F48: LMT TOP
(Maximum value upon
detection)
S84: TEST(TEST MODE)
Adjustment item
Output level upon detection
Minimum value upon detection
Maximum value upon detection
Fig.2
Description
(1) Input NTSC signal that shows brightness radation
portion with 0% black.
(2) Set "VIDEO STATUS" to STANDARD.
(3) Set "ASPECT" to FULL.
(4) Select "COLOR TEMPERATURE" and set to
"LOW".
(5) Select "1.PICTURE/SOUND" from the SERVICE
MODE.
(6) Set < F44 > (Picture control) to "001" and < F45 >
(Picture control mode sw) to "000" to set Y ADJUST
MAX MODE.
(7) Set < S13 > (R DRIVE), < S15 > (G DRIVE) and
< S17 > (B DRIVE) to "255".
(8) Set < S19 > (R CUTOFF), < S21 > (G CUTOFF) and
< S23 > (B CUTOFF) to "128".
(9) Set < F46 > (Output level upon detection), < F47 >
(Minimum value upon detection) and < F48 >
(Maximum value upon detection)to values as shown
in the left table.
(10) Set < S84 >(Test Mode) to "003".
(11) Press the [MUTING] key to memorize the set
values.
(12) Select "8.PP" from the SERVICE MODE.
(13) Adjust < ADM013 > (G offset) to set the 0% black
part on the upper half of the screen to maximum
brightness (Fig.2).
(14) Add reference offset value "0" to the < ADM013 >
(G offset) value.
(15) Press the [MUTING] key to memorize the set
values.
(16) Select "1.PICTURE/SOUND" from the SERVICE
MODE.
(17) Return < S84 > (TEST MODE) to "000".
(18) Check the black level. Perform the "BLACK LEVEL
adjustment" again if the adjusted value is out of
alignment.
(19) Set < F44 > (Picture control) to "001" to cancel Y
ADJUST MAX MODE.
(20) Press the [MUTING] key to memorize the set
values.
(No.YA029)1-47