Sony DXC-637 - BARS Level Adjustment; Color Vector Adjustment

HL
3-4-2. BARS Level Adjustment
Equipment: Oscilloscope
To be extended: EN-122 board
Preparation: OUTPUT switch/camera side — BARS
Adjusting point: @RV12 (BARS LEVEL)/EN-122 board
Test point: pin A14 (GND: A16)/extension board
Trigger: HD (pin B23/extension board)
Specification: A=1.40+0.02V
[for NTSC] [for PAL]
aa pee smn a at yore o ie cam oo
A A
EN-122 BOARD
RVI2
(BARS LEVEL)
Rvs 7)
DL2 DLi {DCC CLIP)
a | | ;
RV6
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Rv5 RV3 RV7 Rvs RV1O RV11
(Y (VBS)} (SYNC) (SET UP) (¥ CLIP) (OCCLEVEL) (KNEE) (WHITE CLIP)
NTSC ONLY
3-4-3. Color Vector Adjustment
Equipment: Verctorscope
To be extended: EN-122 board
Preparation:
e GAIN switch/Verctorscope > 75% CAL
e Adjust the PHASE contro! on the vectorscope so that the
burst spot is overlapped to the 75% axis.
e OUTPUT switch/camera side — BARS
Adjustment Procedure
1. Adjust @RV6 (BURST LEVEL)/SG-232 board so that the
burst spotis located at 75% scale mark on the vectorscope
screen.
2. Adjust the following controls alternately so that each
beam spot stays inside the reference frame“EB”.
@RV7 (BURST PHASE)/SG-232 board
@RV8 (Q (U) LEVEL)/SG-232 board
@RV10 (CHROMA LEVEL)/SG-232 board
3. Repeat procedure 1 and 2 several times.
[for NTSC] [for PAL]
$G-232 BOARD ~ SOLDERING SIDE —
AV?
(PHASE)
@
RV4
Rve aa
(Q(u) LEV)
DXC-637 (UC)
DXC-637P (EK)