Asymmetry Verification - Panasonic JU-475-4 Service Manual

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9.10 Asymmetry Verification
(1) Insert a work diskette.
(2) Step to the track specified in the asymmetry item of Table 8-1.
(3) Set the oscilloscope as follows.
TRIG
SYNC
CH 1
CH 2
VERT
HORIZ
: 1 : 1 ~ ! 1 1 1 : · ~ 1 ; 1 1 1 1 ! 1 1 ~ · . 1 1 . ! : l l j l ~ : ! ~ I I ! I I ! ~ ! ! ! ~ ! ' : 1 : : I ~ . ! ! . I I ! · I I ! : : . ! I : ~ : I I I [ ! I : I · I I ! I : I . I I ! ~ ! j l ~ j · : ; 1 · ! : I ! I I ~ I I ! I : ! ! I · ~ [ I : ! ~ I . I ~ I · I I ! I ! · : ! I . i l : I I I : : I ~ I . j ·
(4) Write 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.
Fig.9-7 Asymmetry Waveform

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