Kenwood KRF-X7775D, Service Manual

Page: 15 / 68

KRF-X7775D/X7775D-S/VR-5080/5090
15
ADJUSTMENT
No. ITEM
INPUT OUTPUT ALIGNMENT ALIGNMENT
FIG.
SETTINGS SETTINGS POINTS FOR
PAL Connect a component video (Adjust an amplitude
1 SUB COLOR
75% COLOR BAR output(Y) to oscilloscope
VR2
Except KRF-X7775D/VR-5080
of video signal.)
FIG.1
(NO SET UP) with 75
Ω
. 0.825Vp - p
2
PAL Connect a component video (Adjust an amplitude
CONTRAST
75% COLOR BAR output(Cb,Cr) to oscilloscope
VR1
of video signal.)
FIG.2
(NO SET UP) with 75
Ω
.
±
0.525Vp - p
INSTRUMENTS CONNECTION
PATTERN
GENERA- RECEIVER OSCILLOSCOPE
TOR
DUMMY
75
Ω
INPUT SIGNAL : 75% COLOR BAR SIGNAL
PARA METER WHITE YELLO CYAN GREEN MAGENTA RED BLUE
LUMINANCE LEVEL
mV 525 465 368 308 217 157 60
IRE
CHROMA LEVEL
mV 0 470 664 620 620 664 470
IRE
CHROMA PHASE
+V 167 283 241 61 103 347
(deg)
-V 193 77 119 299 257 13
525
P.C.B (X35-226)
VR2 VR1
J 1
0.825Vp-p
J 2
J 3
CN1
ADJUSTMENT OUTPUT SIGNAL :
FIG.1 Y LEVEL (VR2)
0.825Vp-p
FIG.2 Cb LEVEL (VR1) Cr LEVEL (VR1)
0.525Vp-p
Adjustment of Sub Color and Contrast (X35, VR1, VR2)