Sony DXC-637 - Aperture Adjustment; Black Balance Adjustment

3-5-14. Aperture Adjustment 3-5-15. Black Balance Adjustment
Object: Multi-burst chart Object: Grayscale chart
Equipment: Waveform monitor Equipment: Oscilloscope, Waveform monitor
To be extended: PR-209 board To be extended: PR-209 board
Preparation: $1 (DTL\V/IE-47 board — OFF Preparation:
e S1 (DTL ON/OFF)/IE-47 board > “ON”
Adjustment Procedure e @RV3 (H/V RATIO)/E-47 board —» Mechanical center
1. Chart frame = Underscanned monitor frame e @RV4 (CRISPENING)/IE-47 board — Fully clockwise ©
2. Test point: VIDEO OUT e @RVS5 (DTL LEVELYIE-47 board > Fully clockwise O
Adjusting point: Lens iris e @RV10 (LEVEL DEP)/IE-47 board
Specification: 0.5 MHz Level “A” —> Fully counterclockwise ©
= 100 + 2 IRE (for NTSC) @RV10/IE-47 board is kept to fully counterclockwise.
= 700 + 10 mV (for PAL) @RV10/IE-47 board is not used any adjustment item.
Adjusting point
1. Chart frame = Underscanned monitor frame
2. Test point: VIDEO OUT
Adjusting point: Lens iris
Specification: A= 100m+ 2 IRE (for NTSC)
700 + 10 mV (for PAL)
3.
Adjust
@RV7
(HF
LEVEL)/IE-47
board
so
that
the
ratio
of
Sn
tess
aa
ale
5
MHz
level
“B”
at
VIDEO
OUT
connector to
0.5
MHz level
——
=
“A” is 80+ 5 %. gee |
(To get the following picture, set the LINE SEL switch on as coe
the waveform monitor to “15 LINES”. Adjust the VAR
control of LINE SEL. )
0.5 MHz 5.0 MHz
3. Test point: TP11 (GND: E1)/IE-47 board
Adjusting point: @RV11 (BLACK BAL)/IE-47 board
B = Ax (80 +5%)
lE-47 BOARD — COMPONENT SIDE - |
tes
RVI2 Oo
(HE OFFSEN (HF aLiasy []7Ps
oS LJ
DL3 Ale CO 2 [hres
(DTL ALIAS)
A) TP10 =DL4 pi2
FL2
AVIsS@ Davia
(2HLEV) — (1HLEV)
FL3
ae Ee
Fu
[| ava
QIcRIsP,) tl
TPIt
OOH} Bai entry)
TPS TP? (BLK. BAL.) @
RV10
(LEV. DEP.) é _
(HF PHASE) 0
Z) R v1
(PHASE)
Rvg
fe: @on CLIP)
RVS RV3
(DTLLEV.) (H/V RATIO)
DXC-637 (UC)
3-16 DXC-637P (EK)