Technics SL-P250 - Page 21

™@
BLOCK
DIAGRAM
OPTICAL PICK UP
Tie
were
|
[fe eae re te od
Qio1,203
Auto power |
control apc]
DATA SLICE & PLL
ut
13
2
|
a
a
oe
|
~
!
:
\
rop-out
wae
!
:
| OEE 1
—————+ —_—— — ——
omer ®
22 U4
SRF
EFM
PCK
OPTICAL SERVO
tS) Wao |
Ss h {C101
al
26
Keats. 12/)
Q141,142
34
"4 Focus
J coil drive
Auto power
control
4 SENSE }-—
FO ON/CNT!
TR ON/CNT2
KICKF /CNT3
KICK R/CNT 4,
KICK F/R
Tracking
coil drive
1C106
Q161,162
ac
IN
---4
gy dao abstie I
2s tei, 131 H
1C103~106
Qs6!
TI
DU~ 14 [
SV Optical pickup,
1C101,501
Lia
| C202 |
IC8Ol,301, I
1 302,401
Lg351851,902
piceor~ 208 |
1 |
--—-4 uw
ccc
[iceoi~s04 |
1
LJ
-6v
DIS~17, 21,22
F404 40262}
-8V
ad 162,142 :
f 1clo3~106
Na
rocr-7
ray IC!31402 \
i] |
| eeepc |
=v 4 1C13,402
|
' |
aa
.
Ic6o1
vP i
FL6OI
cr “7
ad eae I
|
az2or | Seen
To a
FPeC)
Protection
&
ie
| Synchronize
I
4 8LKCK}
sus
I6KRAM
| C302 |
Chip select,write enab
output enable
ie
Q351
ASTAT)
aaa
daa
cae
3
o
°
a
3
TRV-R
TRV-F
OPEN
CLOSE
Q181,182
$102 S101
SPEED
acct POSITION
SENSOR
2h
+8
Ey
Eo DIGITAL SIGNAL PROCESSING
sain Gameieieieeetemen |
LR
SROATA
SRCK
-~--4
DIGITAL FILTER &
Microcomputer
interface
DATA
RAM
O0/A CONVERTER
RJ
s
5
33
,
Timing generator
irene}
,Q40!
Reset signal
generator
0403,404
ccoen-_$h
suse —tt SYSTEM CONTROL & FL DRIVE
SPINDLE
MOTOR
OPEN
Motor
control
Q401,402
saisoSeecesei led
ie
LOADING
MOTOR
| 1C601 | cé601
FL DRIVE & KEY MAT
o2~ 00
— 0 OP eer wee
a. Fey 52
FL DISPLAY
FL6OI