Search Forward (X5) Waveform Check - Sony DSR-2000A Service Manual

8-5. Search Forward (x x x x x 5) Waveform Check
Basic knowledge
To perform tracking adjustment using the alignment tape (XH2-1AST), refer to
the following items.
. For the procedure to enter the maintenance menu, refer to Section 5-2-2.
. For the procedure to exit the maintenance menu, refer to Section 5-2-3.
. For the operating procedure of the maintenance menu during the tracking adjust-
ment, refer to Section 8-1.
Tools
. Alignment tape, XH2-1AST :
. Tape path adjustment board, DJ-461 :
. Dual trace oscilloscope
Check procedure
1. Connect the oscilloscope as follows :
CH-1 : TP2 / DJ-461
CH-2 : TP3 / DJ-461
TRIG : CH-2
2. Insert the alignment tape XH2-1AST on the VTR.
3. Set the JOG dial search FORWARD to the x5 posi-
tion.
4. Adjust the variable VOLTS/DIV control of the
oscilloscope so that the maximum amplitude of the RF
waveform becomes the three DIVISIONs on the
oscilloscope.
5. Confirm that the RF waveform should be almost the
same amplitude with constant intervals as shown in
Fig.1.
6. Confirm that the RF waveform raises up within two
seconds at the specified amplitude when the mode is
changed from search FORWARD (x5) to PLAY.
DSR-2000A/2000AP
8-967-999-02
J-6444-610-B
3/5 Div
or less
4/5 Div
Fig.1
max.
min.
Specification : max. _ min. < 4/5 Div
3 Div
3 Div
8-13