Sony Betacam SX DNV-5 Maintenance Manual page 180

4-2-2. Video Tracking Adjustment
4. Video tracking reconfirmation
Perform steps 1 and 2 in confirmation and
reconfirm the video tracking.
5. Tape running confirmation
Confirm the tape running state (on the drum
entrance side) according to section 4-2-1.
n
After adjustment is completed, set switch S110-2
on the MDC-5 board to OFF.
Drum exit side
6. Tracking adjustment on drum exit side
(1) Set switch S110-2 on the MDC-5 board to
OFF.
(2) Play back the tape top portion (01:00 to
15:00) of the alignment tape SR2-1/1P.
(3) Loosen the setscrew at the top of the T1
guide using a tape guide adjustment screw-
driver.
(4) Turn the upper flange of the T1 guide
counterclockwise using a tape guide adjust-
ment screwdriver so that one or two peak
levels are generated in the RF signal wave-
form as shown in the figure. At that time,
confirm the following.
. Confirm that no clearance exists between
the upper flange of the T1 guide and the
upper edge of the tape.
. Confirm that a clearance exists between the
lower flange of the T2 guide and the lower
edge of the tape.
(5) Turn the upper flange of the T1 guide
clockwise so that the RF signal waveform is
almost flat.
(6) Set switch S110-2 on the MDC-5 board to
ON.
ST2 (D106) then blinks. This enables the
tracking control operation.
(7) Play back the tape top portion (01:00 to
15:00) of the alignment tape SR2-1/1P.
(8) Turn the tracking control (RV100) so that the
center of the RF signal waveform is 80 % of
the maximum output level.
(9) Turn the upper flange of the T1 guide and
fine-adjust the height of the T1 guide so that
specifications 1 to 3 are satisfied.
(10)Tighten the setscrew at the top of the T1
guide at the tightening torque below.
[Tightening torque:
9 x 10 –2
N.m (0.9 kgf.cm)]
4-22
REC A PB
(ch 1)
No clearance exists
Drum
TC head
T1 T2
Drum lead
RF waveform
One or two peak levels(upper)
Capstan Pinch roller
T3 T4
Clearance exists
DNW-7/90/90WS
DNV-5