Sony BVU-950 - Page 69

machine conditions
for adjustment spec. adjustment
Step 4. TP401/DT-21(H-4) @ RV305/DT-21(G-1)
«STOP mode DC levei=0+0.1 Vdc
Step 5.
-Play back the monoscope seg- | TP18/DM-54B(S-6) @ RV305/DT-21(G-1)
ment of the alignment tape | TP401/DT-21(H-4)
RR5-1SD.
«Adjust the position of RF CH-B
crosspoint by search dial in JOG
mode.
«Change the trigger polarity.
Adjust
the
position
of
RF
CH-A
crosspoint so the “C’ becomes
zero.
¢ Measure the OC levei of TP401,
and adjudst the level so that it
becomes haif.
e After the adjustment is complet-
ed, press the S202 on the
DT-21 Board (C-1).
Check that the 0102 (Hysteresis
cance} mode lamp) on the DOT-21
board lights.
~~
TPI8 «< 3
“Cc” =0.
DC level (TP401) when “C” is zero.=D Vdc
DC level (TP401) => Vde
TRIG: TP4/DM-54B(R-5)
Step 6.
¢
After
the
adjustment
is
compilet-
ed, turn the all S201 to OFF.
TP18/DM-54B(S-6)
C30.5msec.
eff it is out of specification of Step 6, perform Step 5 and Step 6 again
But when measuring the DC level, the standard is not Step 4 but Step 5.
7-8