Canon C2050, Service Handbook

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CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
3-20P
8.2 System Controller PCB
F03-802-01
Notation Name Description
LED1 5V check LED On, if 5-V power is present.
LED2 CPU operation check LED Flashes at about 1-sec intervals, if the CPU has
warmed up successfully.
Flashes, if a RAM check error is found while the
CPU is warming up.
On, if the CPU fails to warm up.
SW1 For factory use
T03-802-01
J214 J223 J220 J215
J201
J202
J204
J210
J211
1
2 9
10
1 2
5 6
10
9 2
1
1
2
10
11 2
1
8
7 2
1
1 2
5 6
1 12
4 1
5 1 4 1
167
168
83
84
85
86
1
2
167
168
83
84
85
86
1
2
167
168
83
84
85
86
1
2
A33
A34
B33
B34
A1
A2
B1
B2
B2 B1 A19 A20
B20 B19
A1 A2
A2 A1 B2 B1
A16 A15 B16 B15
A2 A1 B2 B1
A16 A15 B16 B15
B1 B2 A13 A14
B13 B14
A1 A2
A33
A34
B33
B34
A1
A2
B1
B2
A2
A1
B2
B1
A50
A49
B50
B49
D1
C1
B1
A1
D32
C32
B32
A32
J205
J206
J207
J203
J228
J208
J209
J218
J219
J226
J227
J222
J225
J224
J213 J229
72 1
1
2 5
6
1
2 11
10
8 1
SW1
ON
LED1
BAT1
LED2