7-44
DVW-250/250P
4. Connect the CH-1 of the oscilloscope to TP3
(CG) on the MB-601 board and perform the
steps 2 and 3.
5. Recording the test signal (2)
(1) Perform the steps (1) to (5) in step 1.
(2) To display the “B2” to the right side of “TEST SG”,
press the UP/DOWN button several times. Then 8
MHz test signal for video B,D,F and H channels is
generated.
(3) Perform the steps (7) to (9) in step 1.
6. Tracking check
(1) Connect the CH-1 of the oscilloscope to TP2 (BF) on
the MB-601 board and perform the steps 2 and 3.
(2) Connect the CH-1 of the oscilloscope to TP4 (DH) on
the MB-601 board and perform the steps 2) and 3).
7. Perform step 3, and check the start-up time
meet the specification 3.
If the specifications 1 and 2 are not met for two kind of
head-to-tape contact checks, perform the adjustment from
“7-2-5. S1 Guide Slantness Adjustment” and later.
If the specification at the exit side is not met, perform the
adjustment from “7-2-8. T1 Guide Slantness Adjustment”
and later.
7-2-18. Self REC/PB Tracking Check
