Asymmetry Verification - Panasonic JU-475-4 Service Manual

9.10 Asymmetry Verification

(1) Insert a w o rk diskette.
(2) Step to the track specified in the asymmetry item o f Table 8-1.
(3) Set the oscilloscope as follows.
TRIG SYNC
1 1 1 !! I I I ! ! !
INT
(4) W rite 1F.
(5) A read waveform is displayed on the oscilloscope as shown in Fig. 9-7.
(6) Confirm if it satisfies the value as shown in Fig. 8-1.
CH 2 VERT
CH 1
TP 1
0.1 V
Fig. 9-7 Asym m etry W aveform
HORIZ
I S
jji