IBM 1627 Manual page 31

DRUM UP-
NEGATIVE INPUT
M
-r.sv
I •.
PEN CIRCUITS
DRUM UP-
POSITIVE INPUT
PEN UP - PEN DOWN-
NEGATIVE POSITIVE
INPUT INPUT
+ av
Z
CRI6
C33
820
- 24V 5QOV
iP3
CLOCK DRUM
UP- OUT
-24V
TP4
SOLENOID
R40
I
CR
IK 15
\92
Cia
R42
6.8K
C37
Jl20
0lXN
GROUND
( MANUALI
-9V
PEN UP-
POSITIVE'
INPUT
-0.
-0.
Bose of Q14
Sync Internal Plus
50 ms/div., 1 v/div., DC
PEN DOWN-
NEGATIVE
INPUT
T
CARRIAGE RIGHT-
NEGATIVE INPUT
CLOCK CA==
RIGHT -;)
- 24V
~V
+
3V
R73 R76
2.2K
2.2K
R68 R74 R77
10K . Cfi:24
1.5K 1.5K
~
GND
-P2-' - - -
Collector of Q2
Sync External plus on PI-Pin W
I ms/div., 5v/div.
Collec tor of Q4
Sync Internal Plus
2 ms/div., 2 v/div., DC
- 24V
C40
820
500V
R53i R54
10K R93
10K
R45
I
R46
10K 1.51<
R47 R51
3.3K 2.2K
CRI8
CHCD
R48
(3)
I
~
C31 .
820 I
SOOV!
R83
10K
R86
IK
CR32
~~8 ~ ;~
CI8
CI7
R84
2.2K
CR31
CR34
~M"
I,
I~O
C39
820
500V
y
PE/\ OO'l!.', ~.PUT
Y";",t;.'='L)
P2- --------
PEN UP INPUT
( MANUAL)
+1.5V
-P2.---------
pEN CIRCUITS .....••••
f-----------...L. ~
e
o
-0.
-0.
Collector of
Ql
Sync External Plus on Pi-Pin W
1 ms/div., 5 v/div., DC
Base of 01
Sync External C>lus on PI-Pin W
I ms/div., 5 vdiv.,
DC
CD
_Ov
CD
-Ov
I' ,
--+- ......- .• -. ~+ --
Co Ilec tor of
05
Sync Internal Plus
2 ms/div., 0.5 v/div., DC
RI5 Side of C4
Sync Interpel Plus
2
-ns
diy., 2 y/div., DC
f1i) f»
-e-Ov
Ov
Bose of QI6
Sync Internal Plus
50 ms/div., 1 v/div., DC
Emitrer
or
016
Sync Internel Plus
50ms oiv., 0.5 v/div., DC
Circuit Board Viewed from Component Side
*
TP2
o
ZYXWVU
*
Drawing is approximately to scale