Roland CAMM-1 PRO CM-500 Service Notes page 16

2 Electrical Section
MAIN BOARD_2/3 Circuit Diagram
+5
U13A
R34
14
CEXT
3.3K
15
REXT/CEXT
C28
1
A
2
B
3
CE1000p
CLR
2
74HC123F
CRDY
/CRD
/RESET
D[0..15]
U16
1
SENS DIR
19
G
D0 9
A8
D1 8
A7
D2 7
A6
D3 6
A5
D4 5
A4
D5 4
A3
D6 3
A2
D7 2
A1
74LS245
+AV5 U5
AN7805F
3 1
VO VI
PC33 PC32
CE0.1u CE0.1u
C43
100u/63V
12
U14A U12E
1 2 10
74LS07 74LS14
+5
U27B
U27A
13
Q
9 12 5
Q D Q D
4
Q
11
CLK CLK
8 6
Q Q
74HC74
U18A
1
3
2
74HC08
RA16
+5 6 5
7 4 +5
8 3
9 2
10 1
11 R_Paper EXBA10E103J
B8
12 F_Paper
B7
13 Cover Close
B6
14 Pinch Roll
B5
15 Y_Limit
B4
16
B3
17
B2
18
B1
C35 C36 C37
P10
CE470p CE470p CE470p
+5
CN9
1
F-Paper edge sens
PAPER SENSOR FRONT 2
3
4
R-Paper edge sens
PAPER SENSOR REAR 5
6
53014-0610
CN10
Cover SW
1
COVER SW
2
IL-S2T2-02EF
CN6
8
7 Y-Limit sens
6 Pinch Position
TO CARIAGE BOARD 5
4
3 SOL+
2
1 SOL-
IL-FPC-8ST-N
+40 -15 +5
C54
C53
100u/25V
100u/25V
C40
100u/25V
+ + +
CN5
1
4
2
5 TO POWER BOARD
3
6
5566-06A
+5
U12F
R35
11 12 13 1K
U14B
3 4
74LS14
U26
74LS07
74LS373
D6 2 3 ifD6
Q0 D0
D4 5 4 ifD4
Q1 D1
D2 6 7 ifD2
Q2 D2
D0 9 8 ifD0
Q3 D3
2 D1 12 13 ifD1
Q4 D4
D3 15 14 ifD3
Q5 D5
3 D5 16 17 ifD5
Q6 D6
D7 19 18 ifD7
Q7 D7
74HC74
RXDB
/DSRA
TXDA
TXDB
RXDA
/DTRA
/RTSA
R25 100
R26 100
R27 100
R28 100
R29 100
C38 C39
CE470p CE470p
SOL+
SOL-
+5
PC1 PC2 PC3 PC4 PC5 PC6
CE0.1u CE0.1u CE0.1u CE0.1u CE0.1u CE0.1u
PC11 PC12 PC13 PC14 PC15 PC16
CE0.1u CE0.1u CE0.1u CE0.1u CE0.1u CE0.1u
PC21 PC28 PC29 PC30
CE0.1u CE0.1u CE0.1u CE0.1u
R36
1K +5
CN2
BUSY 1
/ACK 2
3
4
5
ifD7 6
ifD6 7
ifD5 8
ifD4 9
ifD3 10
ifD2 11
ifD1 12
ifD0 13 TO I/F BOARD
/STB 14
15
16
RXDB 17
/DSRA 18
TXDA 19
TXDB 20
RXDA 21
/DTRA 22
/RTSA 23
24
25
26
IL-FPC-26ST-N
PC7 PC8 PC9 PC10
CE0.1u CE0.1u CE0.1u CE0.1u
PC17 PC18 PC19 PC20
CE0.1u CE0.1u CE0.1u CE0.1u
U14C
5 6
74LS07
U14D
9 8
74LS07
U14E
11 10
74LS07
U14F
13 12
74LS07
U12A
1 2
74LS14
U12B
3 4
74LS14
U12C
5 6
74LS14
9
8
10
U25C
BA10324A
13
14
12
U25D
BA10324A
U13B
6
CEXT
7
REXT/CEXT
9 5
A Q
10
B
11 12
CLR Q
74HC123F