Technics SL 1700 MK2 Schematic Diagram 2

Page 1

SL 17OOMK2
I SCHEMATIC DIAGRAM 2 (Drive Circuit Board)
I REFERENCE VOLTAGE AND WAVEFORM AT EACH i0 1 2 3 4 5 6 7 8 9 1° 11 12
W * - ' - l - I -

|C101 (AN6675) S V
v: mm: i/\2H

Start Stop Start Stop Start Stop A To control CWCUit ® terminal 4 it
® 2V 2V 70v; To control circuit (D terminal
i2) We; 15V i v-t , l ,
3 2V 2V "k'T' (187 Same as at right 3? MW
3 0V 0V 7. , .-
_@ 5V 5v m.
W 71 {i , L
(9 5v 5v ® , (197 20v 20v E.
@ 5v 6.6V ' 9 rzoii 20v 20v B 2 g 3% "J
@ 0V 0V ® 15V 15V 52D 20V 20V AC 100V (50/60 HZ) § * (g 1 1K gig}?
5V 5V Wt @ 0,2V 0.2V 3 m
@ 0v 0V to 00% W; as 20v 20v i t g E g 4
(16) Wt 15V ' 'ifi oi) 1.7V 1.7V ' g E a
15V ,_ o x 3
-r (L6) 0v 0v V 1 ii iii
lilfi i: ,2' ~ 3
@ 15v 15v m n 4
® W v :V C _ R306 zzii2 1,350 + t
5.3 ms 100
B U s 10K
;@ c205 evzzo
- c not not
|C201 (AN668 8 i .
,2 Afiit-illlii." cm 012
Start Stop Start Stop Start Stop mg 150 R204 2.7K
1 il
® 2.5V 2.5V ® 0V 0V G9 5V 2.5V D i i: 2m ill I'i/
1 M}. ® 9.8V 9.8V Q7) SV SV
® Same as at right MW: 10V 10V 68) 0V (W 0206 SUV] R205 lZOK
, _ vnzm sons
4 mm ,. ,,_L at» 7.5V 0V k * ii»,
"i A l» GD Same as at right may 61> 0V 5V R215 m g
.L w
(3) Same as at right { f r W (2D 1,5V 0V m4 22K §
' @ 0V 0v @ 3v 3v E E i .'C "511.. N.
U,_ mums)
l. N Oms E E E
.iom , L L __ a,
@ Same as at right '2 V (L3) 02V '3\ 3V 2 H E
M; I I I 5 Q 3v 369 1 mi 33?, o
_-F l 8 :
W 64» 2.8V 2.8V - .2 I
E HM ll'Ii 020 R202 10

.ioms ii 7L \ lums
(5) Same as at right (A / 3 av Q4) fiw hie-Ci

25v I g
s m 3 *
@ 3i4v 3.4V 4; " E 3 t: 5 "
(13 jfw m 8V F i ,.i m o .1 _ 2 o
(7) 0V 0V hr 'i m j E f g E o
E + 5 _ § 3
|C301 (AN6682) .l x 5
Start Sto Start Sto Start St
p p P To control circuit (5) terminal T l O
. , . tro circuit i2 terminal
4le i 14, AL 0211 L To control Cichit 6) terminal To con . .
S t - ht V 4 S t - ht V (3 Same as at ri ht y-VWWWVM . V To control circuit (7) terminal 0 control circuit ® terminal
(D ame asa rig ( ( ( 5T 0 ame axa rig i: . g - fig-1: G To control circuit ® terminal $0 control circuit ® terminal
To control circuit @ terminal To control circuit ® terminal
® 0v 0V @ 9V 9V To control Circuit (9 terminal 0 control circuit terminal
O wM O 3 9V
2 Same as at right I . v 6 . 3.9V |C302 SVITC P
j ( 40113 0202 (ZSD637)
, m ,
mm (D Same as at right if Start Stop Start Stop Start Stop Start Stop
(3) Same as at right ML "i M ' _i_ 4 77L © SV SV E 0V 0V
, m m ® Same as at right 5V C5) Same as at right sv ® 5V 5V
-T ' T (13 5v v W
1. 5 C Same as at right iov
Q) SV SV © SV 5V (1;) 0.6V 0.6V T
Am . 4L ® 0V 0V ® 06V 0,6V D _ i
© Same as at right w 15 w l ® 5V 5" 3 Same as at right *7 iv
Same as at right V
IE Qt) 5V 5V 5 Q