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WAVEFORMS
AND VOLTAGE
MAIN ASSY (1/2)
Note : lo) in the table correspond to the pin number.
Measurement condition : In case when (D. audio) is written, at time when disc that has digital audio recording is played.
IC801(LA9425) | 1C802(LC78681KE)
IC901(LA9420M)
@,@)
ims/ow | Q)
0 1/0
D,@ _ sms/div
ae
16mVp-p
65mVp-p
;
a)
TES
wall
L
ov
(750 terminaton)
Ve 20mV/Diw
H
10mS/Oiv
OC mode
@
0 5mS/Oiv
300mVp-p
AC mode(D audio)
OC mode
Ims/Ow | G3)
10S/D1v
®
AC mode
®.®
0 2mS/Div
67MVp-p
42Vp-p
74mVp-p
ut
a
Bt oll
oa
1
4
!
sec
Jlbeul
|
|
ov
AG
AC mode(D audio)
OC mode
65
0 2nS/Div
44Vp-p
0.2mS/Div.
0 61Vp-p
5mS/Div
1§Vp-p
5mS/Div
Q1Vp-9
Ov
0 2uS/Div
50uS/Div
45Vp-p
6 2Vp-p
Tae gees ome
qi
=e
Bhaeeee
{HHH}!
e r
A Ld
ay
0 1S/Dv
4 5Vp-p
0 2yS/Div.
AC mode(D audio)
69)
0 14S/Div
2Vo-p
OF
' a
AC mode(D audio)
1mS/Div
0 53Vp-p
OC mode
CLD- D925
e The inside block diagram of IC901 (LA9420M)
ctvo
LVE
LVG
LVvO
SPCO
SPLO
SPO
PA-
PAO
PAC
POZ
LD/2FR/CO
CLK
Le
23
24
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