Roland SOLJET Pro III XC-540 Service Notes page 43

HEAD BOARD_Circuit Diagram 6/6
FF1_DAC_B[0..9]
FF1_DAC_LAT3
/FF1_DAC_RESET
/F1_POWER_SAVE
FF1_DAC_A[0..9]
FF1_DAC_A[0..9]
IC27
FF1_DAC_B0 4 22
D0 VCC45
FF1_DAC_B1 3
D1
FF1_DAC_B2 2
D2
FF1_DAC_B3 1 20
D3 NPNB
FF1_DAC_B4 30 18
D4 FB
FF1_DAC_B5 29 16
D5 PNPB
FF1_DAC_B6
28
D6
FF1_DAC_B7 27 24
D7 VCC3
FF1_DAC_B8 26
D8
FF1_DAC_B9 25
D9
9
DP
5 11 VCC3
LAT DP
6 12
RST DP
13
DP
23 15
PSAVE DP
17
TP131
DP
19
DP
PC27
8 21
DAOUT DP
7 NON
GND3
10
GND45
14
VOUTGND
E09A54RA
IC28
FF1_DAC_A0 4 22
D0 VCC45
FF1_DAC_A1 3
D1
FF1_DAC_A2 2
D2
FF1_DAC_A3 1 20
D3 NPNB
FF1_DAC_A4 30 18
D4 FB
FF1_DAC_A5 29 16
D5 PNPB
FF1_DAC_A6 28
D6
FF1_DAC_A7 27 24
D7 VCC3
FF1_DAC_A8 26
D8
FF1_DAC_A9 25
D9
9
DP
5 11 VCC3
LAT DP
6 12
RST DP
13
DP
23 15
PSAVE DP
17
TP132
DP
19
DP
8 21 PC28
DAOUT DP
NON
7
GND3
10
GND45
14
VOUTGND
NON
VCC3
IC29
SSI7_B 1
SSI7_B 1A
SSI7_A 7
SSI7_A 2A
SSCK7 9
SSCK7 3A
15
4A
4
G
12
G
NON
TR64 + C88
NON C161
NON
R329 R150
TR60
NON
NON NON
R324
NON
R323 R148
NON NON
R328 R149
TR59
NON
NON NON
C160
NON
TR63
NON
TR62
NON C87
NON
R327 R147
TR58
NON
NON NON
R322
NON
R321 R145
NON NON
R326 R146
TR57
NON
NON NON
C159
NON
TR61
NON
TP150 TP145
R334 NON
2
1Y
3
1Z
TP149 TP146
R335 NON
6
2Y
5
TP147 TP143
2Z NON
R332
10
3Y
11
TP148 TP144
3Z
R333 NON
14
TP135 TP142
4Y
R320 NON
13
4Z
TP136 TP141
R319 NON
TP138 TP140
R318 NON
VCC3
TP137 TP139
R317 NON
PC29
NON
2-21
VHV3
VCC
NON
COM7_B
LAT7
CH7
NCHG7
SCK7_ZA
SCK7_YA
SI7_ZA
SI7_YA
SCK7_ZB
SCK7_YB
SI7_ZB
SI7_YB
COM7_A
SI7_YB
C91
NON
SI7_ZB
SI7_YA
C90
NON
SI7_ZA
SCK7_YB
C86
NON
SCK7_ZB
SCK7_YA
C85
NON
SCK7_ZA
VHV3
C83
NON
CN10
VHV3
36
VHV3
35
GND
34
COM7_A
33
GND
32
COM7_A
31
GND
30
COM7_A
29
GND
28
COM7_B
27
GND
26
COM7_B
25
GND
24
COM7_B
23
GND 2
22
GND
21
VCC
HEAD7
20
GND
19
GND
18
GND
17
GND
16
GND
15
LAT7
14
GND
13
CH7
12
GND
11
NCHG7
10
GND
9
SCK7_ZA
8
SCK7_YA
7
SI7_ZA
6
SI7_YA
5
SCK7_ZB
4
SCK7_YB
3
SI7_ZB
2
SI7_YB
1
NON