Sharp XV-Z1A Service Manual page 23

Step
Adjustment Position
10 AGC
11 D/A Output level
(NTSC) (DAC)
12 D/A Output level
(PAL) (DAC)
13 Signal center
(DAC)
Adjustment Conditions
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscillosope to
pin (3) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : AGCADJ
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (5) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 5
Subject : DAV
1. Receive the 10 step gray
scale signal of PAL.
2. Connect the oscilloscope to
pin (5) of P1501.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 1
Subject : DAVREF
1. Receive the 10 step gray
scale signal of NTSC.
2. Connect the oscilloscope to
pin (2) of P4303.
3. Push S2001 and set the fol-
low DAC mode.
Group : VIDEO 2
Subject : SIG CTR
Adjustment Method
» Using the Operation key switch
tween black and 100% white level.
1.2 ±0.05Vp-p
» Using the Operation key switch
tween black and 100% white level.
0.6 ±0.05Vp-p
» Using the Operation key switch
tween black and 100% white level.
0.6 ±0.05Vp-p
» Using the Operation key switch
tween signal center and GND.
DC 7.0 ±0.1Vp-p
Signal center
23
XV-Z1E/A
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