12.6V
POWER
3000
25V
2A
–VR
1K
820
TR2
2SB221
2•
2SB250
RD6A
5.9V
gn
115VAC
85W
gy
wh
12V
gn
light bu
5000
25V
bu
bu
vi
3A
TR1
2SB243
100
25V
2000
25V
10
100
15V
10
–10V(K)
0.2
0.2
dark bu
bn
30
15V
115V
100V
NS1
NS5
NS2
NS6
NS7
NS8
–2V
NS3
1.8
NS4
820
3A
2000
25V
og
2SB243
3
2000
25V
+VR
1K
1K
TR4
2SD77
3.9K
1.5K
TR3
2SD77
1.5K
30
15V
820
bk
gn
small
dark bu
N401H
N391H
N381H
N371H
N361H
N351H
N341H
N331H
N321H
N311H
N301H
N312J
N322J
N332J
N401F
N391F
N381F
N371F
N361F
N351F
N341F
N331F
N321F
N311F
N301F
N312H
N322H
N332H
N401J
N391J
N381J
N371J
N361J
N351J
N341J
N331J
N321J
N311J
N301J
N312K
N322K
N332K
NS9
NS10
N352Z
N342Z
N332Z
N322Z
N312Z
N302Z
–2V
–2V
–2V
–2V
–2V
Canon 161 Calculator
Section: Power Supply
Page: 19
Rendition: 2022 Feb 6
E
–10V
+10V
–2V
N302V
100
15V
FAN
DC
1.6A
12V
12.6V
DC
2.5A
to display lamps
390
30
15V
30
15V
30
15V
2 of
30
15V
100
15V
30
15V
100
15V
30
15V
100
15V
to keyboard
–V(L)
B o a r d
Cumu. mA Board mA
30
231
231
31
453
222
32
649
196
33
871
222
34
1046
175
35
1280
234
36
1307
27
38
1438
131
39
1565
127
40
1660
95
37
1785
125
Board Current Draw
During measurement, V–10 at
backplane was ~ 9::9.6V due
to ammeter drop.
Display connectors not in place.
–19V
2•
DV14C
2•
SR1A-2
2•
DV14C
1S311
