Technics SL-P250 - Page 25

OPTICAL PICK UP
MOTOR/ as fee [B} 0/4 conveRTER/ AUDIO CIRCUIT
“ey leeds 28D 1862 2SB 1240
O5us.01V/01V
UIT
MOTOR
DRIVE
MOTOR
DRIVE
SPEED
RAI POSITION LOADING
SENSOR Ae O3Vep MOTOR
O
Pa lene es i cue [EQ SERVO CIRCUIT
(OOOO © _— OOOOO
(A) Tracking batance adj. x
B ¢
Sle
Seie|
9.)
Sas
:
SES e-o!l 8K [Rii6} ams wo se 49v <
rc = 1.8K w (A) =
xglee fas vocierss ok oe, aaiecawall aes
4 aeyPiay 327 se 3S TH Pl OPEN/CLOSE
<A -86 ; Teel et peti 1 SN 1K ne DETECTOR
77 liavaep N R14 VRION RUS o[8. e ONep
2ms.5V.
Ni
\
Ci4lsoRI4
1C104
3
15K
5KB{
I.
ge
ry @l4l eA R144 33K 0.015 1K | so Masias 2ms.0.1V/DIV
oe
SV \__c142,,0.0012 ; x8 OPTICAL SERVO eee
R142 33K
RI47 alas |\ 1C104 T i jr?
of’ Bak {12k |\ 7 oe racking offset adj @203 ior adie
#8 Welt Bey 2SD 1862 2SA1547 .
@x | og 4
es
ay
<2
Tos
>
BBV
25
4
-5.1V
20!
A eee : RRP St Soe Pe CONG
16104 , 106 roeas . (5)
b SV | BA4558F T loffset a K
be OS FOCUS COIL/ adj. b (7)
Be
22
8
TRACKING
COIL
DRIVE
g
K
© ”
o8 Seh@ § d K
on °8 can Ploy e »
: IM \ ewe }
Ri66 Vp pn one Sie Se
ne ia hie . pres ole
5Oms.iW/DIV h (3) Q403 Q404 ‘
i @—_ 2SD1862 2581240 lomeoue
91 <q49v ciee_z20P ieio3 j ®) MOTOR DRIVE MOTOR DRIVE \
ana ceaberanale 85 oc am nrg (a i
ee RI82 560K TRAVERSE SERVO E ge K
Qis! _ ° Se be 1
7.7
iOVv)
obo
ici68
arn
1C103
Siv
Pas
Tracking
8x
‘
i
(~ O7V R184 6 19.47 +02 gain adj. & [>
thro a zee | 7 ov agvi a) : fs
|
oof
6°01
1c102
OVS
fg
>
(Ov) -86V > ol,
0.7v oy x “B6V 2G © =Sm 29) C.SBRT
Dia ox s (-78v) 20 oo oe < CHS 0.0068 '29¥)
meV ae ee o 0183 /\5 au
ea a 1SS254 R186 47K oy, 7
“ 2'VP Rigs R195
R189 fylcies 13 | 47K 10K aah a gain
Q141,161 Q142,162 12k 4 44 (PN) <a 2) z e rs
2SD 1862 2SB1240 | ox dDI84 $2 3 SPINDOL
FOCUS COIL/ FOCUS ox Oneisse5a 4 R187 a, C) MOTOR
TRACKING COIL TRACKING a+ = : ex $ 47k ze a
DRIVE COIL DRIVE Oh [rey aa °
(7.3V) Ri96
rf 10K
Q181 Ic102
2SD 1862 MN6636 - IC105 ImsO.5V/DIV
TRAVERSE
COIL
SWITCHING
Ke
SV1BA4558FTI
DIGITA
FOCUS ERROR AMP PROCE
\ Ploy
R123 39K h 4
Q182 b 520 q oppo /O.2Vp-p 30Vp-p
2SB1240
0.0047
ft
'
O.2us.2V/DIV
TRAVERSE COIL dq 2ms.0.1V/D1V ee
DRIVE 7 |
i
tps.
3V/01V
i B
b x XIE]
a a bebe
e a: . ggae
j caer = 3] e401 220 z Z222
PERE TE ve Pu TE TEESE TOE TEEPE ETE TO YS TESTE VES PST SES YETI TESTSSTE DESEO FTE ET EET STE TTT TT TTTTTn »k 'c201 (a i) = = W—— z Zee ea
LM2940T5 b lal AOE nr Z20 py Sops 2v/01V
REGULATOR c rel R403, é p
qd (4) d
4
6 e
AN8371S
f
et
f
PLL/DATA
SLICE
(A)
Zo
x
9g
7
Qg
2ps.2Vv/D1V
ese © h (8) h
a
2
i
(9)
nS sel & 1c202 ;
nS
esa
8 _ Play ste SVIBA4558FTI + o
=f 5.0Vv 9 REGULATOR cN405
OT)
:
f
a
inseielin se ° oe 3 Ss 1¢302
bs
28D
1862
.
g REGULATOR d () CXK5816M
O.l ws. 1v/DIV e (5) 16K RAM
=
PPA [roe tS # v
t a2 a2o1F78v) ag
oo. =
-86v <a
Q405
DTC l24EST
RESET
a oe —44— |