Technics SL-P200

OPTICAL
PICKUP
OPTICAL
PICK
UP
Cc MOTOR/
SWITCH
(FOCUS) (TRACKING) CIRCUIT
'D | D/A CONVERTER/AUDIO CIRCUIT
Q4o1 Q402
2SD 1862 2SB 1240
MOTOR DRIVE MOTOR DRIVE
LCADING
SPEED
RA! POSITION
SENSOR pe
EL cu ee On
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(is TREES (SARS ER
»® © © @ @ |
E] SERVO CIRCUIT ios
Note: Original circuit uses AN8377 for
1C103 while the new circuit uses ae aio!
AN8377N for 1C103. (Refer to oz
the table below for other ce 2SA1547
changes.) AUTO POWER
CONTROL
(OPEN/CLOSE
DETECTOR)
1C103
AN8377
FOCUS/TRACKING
/ TRAVERSE COIL DRIVE
(BTL DRIVE)
AN8377N
Removed
2SB12400R
Added
1c402
BA4558FTI
MOTOR DRIVE
CN103
[tov
aay
§
a
°
Removed
enaoe
Pro
vyasv
$3
has
1Oms.2v/DIV
0.2ms.
Removed
0,
J
(2)
Q301
Shorted
orte:
KS)
OTCI24EST
2
~8.6V
SWITCHING
1C104
iS
LM2940T5M
le
REGULATOR
lo!
5)
hol
g
CN402
CN103
io
.
oa
2SB1240
Q403
Q404
2
SWITCHING
ie
2801862
2SB
1240
3
Ra
MOTOR
DRIVE
MOTOR
DRIVE
Ploy
O.5ys.
0.1V/DIV.
DC
SPINDLE
°
MOTOR
5
a
AN8373S
7
%
«{s
SERVO
AMP
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=():
Le0
PL
x
:
é
=
|
2m
05V/D1V.
13102
Best
eye
adj.
&
=|é
aaalt
Y
Fes
|
a
|
osv
ae
Os
(40)
Tracking
balance
”
:
!
ay
20
Weg
REIN
adj.
ae
=
“~
4
(49V)
OV
Play
$8
(5)
RIO
C120
7
(38)
O.5ps.0.5V/01V.
way
bv
zeke
oleyat
VR103
CA
c1og_4.9v
TRIE
loves
=
lel
p
MY
:
4
30Vp-p
>
LL
covsagy
PI
eal
|
ae
ae
Aer
a
ar
eee
:
i
[|
sovnsy?
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e
LOVI4E9V,
7
>t
TT
neh
an
cnaos
:
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macoete
:
z
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vDET
b
ov
i
¢
41
ed
CN604
.
BBE
ci39"/47P
He
Bars
=
oper
lh
2ms.0.1V/
DIV.
OPERATION
j
(oy)
CIRCUIT
@)
To
Servo
Gain
cna0s
Hca09
001
fay
ae
.
Adjuster
;
Sl
°
Focus
gain
(3)
CN605
c
les
'c302
>
.
adj.
|
d
j0)
CXK58
16M
o5ps
oav/oiv.~
650%.
bv/DIV
Sys
2V/0IV
O.lps
IV/DIV
‘
ie
=
aes
5.2V
IN
l
Tracking
(8)
f
i)
of
r
;
|
|
2.2
i
4
UKKK
ley
RRR
oP
ov
vu
Nee
yee
33
R435
1K
OTC l24EST
RESET
=1= — 18 —