(No.52169)1-47
4.8.2 RECEIVER UNIT
Item
Mesuring
instrument
Test point
Adjustment part
Description
BLACK
LEVEL
Remote control
unit
Signal generator
[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)
(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.
Fig.2
Item No. Setting value
Adjustment item
F46
090
Output level upon detection
F47
016
Minimum value upon detection
F48
016
Maximum value upon detection
Adjust the 0% black to maximum brightness