Technics SL-PS670D - Loading Mechanism and Block Diagrams; Loading Belt and Motor Replacement; System Block Diagram

SL-PS670A SL-PS670A
2. Replacement for the loading belt and loading motor @)m © a Block Diagram
+ Note: —p—_ AUDIO SIGNAL
[XYN2+F6FZ]
@
Follow
the
GED
~
GEEED
of
item
2
in
checking
procedure
2
=
=.
es
a
ae
SERVO CIRCUIT
for each P.C.B. on page 9. | CPT AL PIGKCr UNE ,
e Follow the Gap ~ of item 1 in main component ; '
replacement procedures on page 10.
ARF
TBAL MN662713RGI 7
Ox
AN8805SBE!
FBAL
FBAL
|
1C702
|
FEOUT FE SERVO PROCESSOR / DIGITAL Eel
SERVO AMP TEOUT TE SIGNAL PROCESSOR/DIGITAL ERCK i
FILTER & D/A CONVERTER
'
ULLILLILLLLLLLLILLLLLLL
FOCUS COIL
SUPPLY
Release the
2 claws.
TRV, TVO,ECM,
ECS, KICK,TRD,FOD
Remove the belt
[RMGO0158]
Remove the
PC SENSE,
gear cover.
/FLOCK,/TLOCK, MCLK
X1,X2 SQCK,SUBO,STAT /RST MDATA,MLD ™
D3- 03+ D4- 04+
AN8389SE!
FOCUS COIL/
RADIAL COIL/
SLEDGE MOTOR/
SPINDLE MOTOR
DRIVE
© ep
9 Unsolder
SENSE,/FLOCK,/TLOCK, /SRST MCLK ef
SOCK, SUBQ, STAT MDATA,MLD
terminals
Motor ass’y
(REM0047]
INI-IN4
SLEDGE
MOTOR
$70!
(REST SW)
a)
UPD78042 A014
SYSTEM CONTROL/FL ORIVE
1
!
Polarity of motor ass’y
{
REST SW
1 /POWER OFF
PI-PIO POWER STANDBY
Pl22-Pi26 IG-10G Sw LED
- - -——_—_———
POWER SUPPLY CIRCUIT o22
POWER
OFF DET.
Q401,402
\
‘® 065
(STAI
s6si
(POWER)
(3) ID ©
! o2t
bee
[XTBS26+8J] LM2940T5M
|| RECT. [ REGULATOR |
Oo Oo +
1
[ POWER SUPPLY CONT. |
Q16
~32.1V
POWER
AG |) TRANS- 0891-893
7 FL OISPLAY
FORMER POWER SUPPLY PESV } From |
“I2.4v
012,13 O31-34 ‘ : .
+13.6V
PT
freer
ET]
eeocaton
PTT
eooravon
[7
#8
ree
-12.9V
este } Les [ POWER SUPPLY CONT. |
KEY MATRIX
To FL6O!
OPERATION CIRCUIT
————
Sid~ Shae