Video Signal Adjustment Procedure - Sharp LC-26SA1E/RU Service Manual

[7] Video signal adjustment procedure

* The adjustment process mode menu is listed in Section 5.
1. Signal check
1. Signal generator level adjustment check (Adjustment to the specified level)
•Composite signal PAL
•15K component signal
(50 Hz)
2. EnterinEnter the adjustment process mode
1. Enter the adjustment process mode according to Section 3.
3. RF AGC adjustment
Adjustment point
1 Setting
2 Auto adjustment
performance
4. RF AGC Adjustment (SMPTE RF SIGNAL- Alternative Method)
Adjustment point
1 Setting
2 Auto adjustment
performance
: 0.7Vp-p ±0.02Vp-p (Pedestal to white level)
0.7Vp-p ±0.02Vp-p (Pedestal to white level)
: Y level
0.7Vp-p ±0.02Vp-p
PB, PR level
Adjustment Conditions
[Signal]
PAL
Sprit Field Colour Bar
RF signal UV
[Terminal]
TUNER
Adjustment process
Page3
Adjustment Conditions
[Signal]
PAL
SMPTE Field Color Bar
RF signal UV
[Terminal]
TUNER
Adjustment process
Page6
Adjustment procedure
•Feed the PAL Sprit Field colour bar signal to TUNER.
Signal level: 52 dB µV +0dB , -1dB (75Ω LOAD)
Bring the cursor on [
[ RF AGC ADJ OK] appears when finished.
Adjustment procedure
•Feed the PAL SMPTE color bar signal (E-12ch) to TUNER.
Signal level: 52 ±1dB µV (75Ω LOAD)
Bring the cursor on [ RF AGC ADJ] and press [OK].
[ RF AGC ADJ OK] appears when finished.
5 – 14
LC-26SA1E/RU, LC-32SA1E/RU
[RF Signal]
100% white
RF AGC ADJ] and press [OK]