Sony BVH-2000, Operation And Maintenance Manual

Page: 438 / 505

11-5. AID CONVERTER ADJUSTMENT
Connection: section 8-4 connection 4.
Mode VTR~ STOP
Setting of Switches & Controls;
SERVO REF Sw: INPUT
(VIDEO
CAUTION:
Don't attempt to, turn
0
RV9 on the RL-12 board. In case of
turning, set it as shown below.
L
Remove solder at pin-43B of the edge connector on the
extender, and connect a jumper between pin-43B of edge
connector and GND,
Connect a jumper between TP18 and GND on the RL-12 board.
Step 3. Adjustment RL-12 Board
1
=
2.560 0.005
Step 4.
Remove the jumper from extender and solder at pin-43B.
the TEST -1 switch to
switch (S5/CD-I7) to position '"4".
'"E" and TEST-2
Step 7. Adjustment
7-Seg. LEDs/SV-43
=
Transition from "'7F" to "'80"
QRVIO/RL-12
After adjustment, set TEST -1/2 switches to position "'0"
respectively.
BV H-2000 (U /C) IPS/PM
BVH-2180(U/C)/PS/PM
11-7
BVH-2500(U/C)/P
11-6. D/A CONVERTER ADJUSTMENT
Connection; See section
connection
9"
Mode of VTR; STOP
Setting of Switches
& Controls;
SERVO REF Sw: INPUT
Step 1.
Put
9" full wound tape, whose end is stuck by
adhesive
Do thread the
Step 2. Adjustment RL-12 Board
Edge connector pin-16A
=
0
±
0.005 Vdc
RV15
Set the TEST-I switch (S4/CD-17) to position "'2", press the
ENTRY switch (S7/CD-I7) and confirm the level changes at
pin-16A/RL-12 as shown below.
If top bottom levels not ....
UL~_ .... LL .. '~
Pin-16A
I
I'""------...
-I==t-=
0
o.~:~v
1:3se:"
6
sec ~
I
1 PERIOD "RV7/RL-12
After adjustment, repeat step 2 and make sure step 3.
to "0" and press
o
>
a:
UJ
(f)