Sony TRINITRON KV-27EXR20 Service Manual page 28

KV-27EXR20/27EXR25
RM-Y103 RM-Y104
(KV-27 EXR 25 only) 1) Input a color-bar signal.
2) Set to PICTURE IN PICTURE mode.
3) COLOR ree RESET
RV 2200
®
HUB
ceeeeecseees
RESET
RV 2107 RV 2103 :
4) Connect an oscilloscope to TP-47 B.
© Pole @ RV 2201
si 5) Adjust RV 2107 so that voltage is 0.90.05 Vp-p.
© oOTP46B TP47B
RV 2105 TP4éR By BOUT
RV 2106 [B LEVEL] a
SUB HUE © FL 2205
re) SUB PICTURE] FL 2206
Bi e108 6 SUB PICTURE ae
©
0.9 + 0.05Vp-p
CONT
PBOARD) °7P13a
: Y-IN
-component side- |
[RF AGC ADJUSTMENT(IF BLOCK VR)|
1) Input a color-bar signal.
2) Set to PICTURE IN PICTURE mode.
SUB HUE ADJUSTMENT(RV 2106
3) Adjust AGC VR of IF 1201 so that snow noise and
1) Input a color-bar signal.
cross-modulation disappear from the picture.
4) Confirm them at every channel. 2) Set to PICTURE IN PICTURE mode.(1/4 SIZE)
3) PICTURE i Radiebea tea vice 80%
CONTRAST ADJUSTMENT(RV 2108
BRIGHT
verre RESET
1) Input a color-bar signal.
COLGR:..
oaiesacm RESET
HUE ateeaa(ardees Skee RESET 2) Set to PICTURE IN PICTURE mode.
3) Observe signal at TP-13 a an oscilloscope.
4) Adjust RV 2108 (SUB CONT) so that the signal
level between white and pedestal becomes 550410
4) Connect an oscilloscope to TP-47 B.
5) Adjust RV2106 so that the © coincides with Das
shown in figure.
mVp-p as shown.
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