Sharp XV-Z1A, Service Manual

Page: 22 / 65

XV-Z1E/A
22
Step
Adjustment Position
Adjustment Conditions Adjustment Method
7 Contrast
(DAC) 1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 1
Subject : SUB-R 0
SUB-G 0
SUB-B 0
setting.
4. Group : VIDEO 1
Subject : CONT
»
Using the Operation key switch ' " , adjust level be-
tween black level and 100% white level.
1.60 ±0.05Vp-p
9 Bright of
component
mode
(DAC) 1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : C-BRIGHT
»
Using the Operation key swsitch ' " , adjust the black
level as same as clamp level.
6 Reference black
Level 1. Receive the 10 step gray
scale signal. (NTSC or PAL)
2. Connect the oscilloscope to
pin (3) of P1501.
3. Group : VIDEO 5
Subject : T-BRT
»
Using the Operation key switch ' " , adjust the black
level as same as pedestal level.
8 Contrast of
component
mode
(DAC) 1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : C-CONT
»
Using the Operation key switch ' " , adjust level be-
tween black level and 100% white level.
1.55 ±0.05Vp-p
Pedestal
Black