Sony Betacam SX DNV-5 Maintenance Manual page 185

Confirmations
1. Alignment tape playback
Play back the tape top portion (01:00 to 15:00) of
the alignment tape SR2-1/1P.
2. CTL head position confirmation
(1) Set switch S110-2 on the MDC-5 board to
ON.
ST2 (D106) then blinks. This enables the
tracking control operation.
(2) Turn the tracking control (RV100) on the
MDC-5 board so that the output level in the
center of an envelope waveform is maximum.
At that time, confirm that the marker portion
of the envelope waveform is in proper
alignment with SERVO CF (TRIG).
(3) Set switch S110-2 on the MDC-5 board to
OFF and put the tracking control into the FIX
state.
At that time, confirm that the output level of
the envelope waveform is the same as the
level in step (2) without change.
If the specifications are not satisfied, perform
steps 3 and later.
Adjustment
3. CTL head position adjustment
Turn the position adjustment nut of the CTL head
using a box screwdriver. At that time, adjust so
that the marker position of the envelope wave-
form satisfies the specification and so that the
output level in the center of an envelope wave-
form is maximum.
4. CTL head position reconfirmation
Reconfirm the CTL head position according to
steps 1 and 2.
When adjustment is performed
5. TC head position adjustment
(Refer to section 4-2-5.)
DNV-5
DNW-7/90/90WS
http://getMANUAL.com
Alighnment tape SR2-1/1P
ST2(D106) : Goes out
MDC-5 board
NTSC
CH1 REC A PB
Envelope waveform
TRIG SERVO CF
PAL
CH1 REC A PB
Envelope waveform
TRIG SERVO CF
Specifications : Adjust that the marker portion of the envelope waveform
is in proper alignment with SERVO CF (TRIG) and the
output level in the center of the envelope waveform is
maximum.
4-2-4. CTL Head Position Adjustment
CTL head
Position adjustment nut
ST2(D106) : Blinking
OFF
Tracking control (RV100)
Marker
Marker
ON
4-27