Sony EVO-720P - Page 260

3. D-A converter level adjustment
(PA-11P/MB-9P boards)
Mode Playback
Alignment tape :
Signal For operation confirmation
(WR5-5CSP)
IkHz (Coler bar) section
Measurement Point
Pin @ of CNOOl on PA-1IP
board (LDA. OUT)
(Pin © (R.DA OUT)}
Measuring Instrument Audio level meter
Adjusting Element
RV032 on PA-11P board
Specified Value
4,040.2 dBs
Adjusting method :
1) Adjust to ~4,0+0.2 dBs with RV032.
Note:
If there is a level difference between L
and R channels, adjust to the center
value,
4, NR decode level adjustment (PA-11P/MB-9P boards)
Mode
Signal °
Measurement Point
Playback
Alignment tape :
For operation confirmation
(WR5-5SCSP)
400Hz (Monoscope section)
Pin @ of CNOO1 on PA-II
board (L PB OUT)
(Pin © (R PB OUT)]
Measuring Instrument Audio level meter
Adjusting Element RV031_ on PA-11P board
Specified Value
~14.0+0.2 dBs
Adjusting method :
1) Adjust te —14.0240.2 dBs
If there is a level difference between L
Note:
with RVO31.
and R channels, adjust to the center
value.
5. A-D converter offset adjustment
{PA-11P/MB-9P boards)
Note: This adjustment is unnecessary for the player
side,
Mode REC
Signal Non-signal
CH1: Pin @ of CNOOI on
PA-11P board
(AD/DA DATA)
CH2: Pin ® of CNOO) on
PA-11P board (WCK)
Oscilloscope
RV001 on PA-11P board
{RV051)
Measurement Point
Measuring instrument
Adjusting Element
Brightness of upper
Specified Value luminance line and lower
luminance line is equivalent. —
Note: Since L and R channels interfere with each
other, perform adjustment allernately,
Connection :
1) Connect with jumper the following pins of CN003
on the MB-9P board:
+ Pin @ (L IN) —— Pin ® (GND)
* Pin @ (R IN) —— Pin © (GND)
Adjusting method :
1) Adjust RVOO1 [RVO51] so as to make brightness
of the upper and lower luminance lines equal,
Adjust with RVOO1 (Lch)
Adjust with RVO51 (Reh)
Upper side
*— luminance line
“
on { im i
Fig, 8-53.
— Lower side
luminance line
—338—