Sony DSR-570WS Service Manual page 192

7-4. Check after Tracking
Adjustment
Equipment and Tool
. Alignment tape, XH2-1AST
. RF extension tool
. Oscilloscope
Setting
1. Connect the RF extension tool to CN775 of RP-
91 board.
2. Connect the oscilloscope as follows.
CH1: RF/RF extension tool (RF waveform)
CH2: JSW/RF extension tool (Switching
waveform)
Trigger: CH2
3. Select maintenance menu No. 604-10, center ITI
mode for tracking adjustment.
(Refer to Section 7-2.)
4. Insert an alignment tape into the unit.
5. Perform checks after Section 7-4-1.
7-4-1. Tracking Check
1. Set the FWD search/REV search mode,
assuming that the output level of the RF
waveform is A (= 100 %).
2. Set the PLAY mode, assuming that the RF
waveform output level is B (= 65 %).
3. Check that the A and B levels are Specification 1.
4. Check to see that the difference in the amplitude
between Emax and Emin in the PLAY mode is
less than 20 % Emax. (Specification 2)
5. Check to see that no significant fluctuations are
observed in the waveform. (Specification 3)
7-12
Specification 1
B
= 0.65
A
FWD search or REV search
PLAY mode
Specification 2
(Emax _ Emin) < 0.2 Emax (Less than 20% of Emax)
Specification 3
C < 0.2 A (Less than 20% of A)
B A
A = 100 %
Emin Emax
C
A
C
DSR-570WS/570WSP V1