SONY KE-50MR1
Service Manual

2-1-8. AD adjustment of CVBS Video (NTSC4.43) system
1) 2) 3) 4) Set input to AV1. Input NTSC4.43 All White Signal 90IRE in AV1. Set picture quality mode to [PC/GAME]. Send �RGB Level� Command. Adjust Y_OUT_LEVEL until the Green detection value is within a setting value. Detection setting value 197 ±3 5) 6) 7) 8) Set Video Signal to NTSC4.43 All Gray 20IRE. Adjust Cb_OFFSET1 until the detection value of Blue becomes same as that of Green. Adjust Cr_OFFSET1 until the detection value of Red becomes same as that of Green. Repeat step 6-7 until it is in a detection setting value of 8).
+2

ML board CN304 3 pin Blue output

(A)

(B) figure (3)

(C)

(D)

ML board CN304 3 pin Blue output (A) (B) figure (4) (C) (D)

Detection setting value 44 �6 R,G,B detection value dispersion: ±1
75% Color Bar (A) x (B) x (C) x (D) x Bl Bk

9)

Repeat step 2-7 until it is in the detection setting value of 4) and 8).

Wh Ye Cy G Mg R

10) Input NTSC4.43 75% Color Bar signal into AV1. 11) Adjust C_OUT_LEVEL until the detection value of (A) becomes same as that of (D), as shown in the right figure (2). 12) Adjust Hue until the detection value of (B) becomes same as that of (C), as shown in the right figure (3). 13) Repeat step 11)-12) until the detection value of (A), (B), (C) and (D) becomes the same, as shown in the right figure (4). (Note) Adjustment is omissible. The adjustment value of NTSC4.43 copies that of NTSC.

Cautions : The position of (A) excepts between for 1/16 from an edge. figure (1)

ML board CN304 3 pin Blue output (A) (B) figure (2) (C) (D)

KE-50MR1(AEP)

2-5