Roland HP-1 Service Notes page 22

1 2 3 4 5 6
A CONTROL PCB ASSY & CIRCUIT DIAGRAM (only for HP-1)
ASSY7772902000
B
C
D
E
F
G
CN1
SCD7
1
H TO MAIN BOARD SCD6
2
(CN4) SCD5
3
SCD4
4
53015_0410
I
J
CN3
D+5
1
1
DGND
2
2
SS2
3
K
3
SS1
4
4
SS0
5
5
TO MAIN BOARD LEDEN
6
6
(CN3) SCD3
7
7
SCD2
8
8
SCD1
9
L 9
SCD0
10
10
53015_1010
M
N
SDO SD1 SD2 SD3 SD4 SD5
PORT0 PORT1 PORT2
O
PA0 PA1 PA2
P
Q
R from
POWER & AMP. B
(CN1)
S
NIU
T
U
7 8 9 10 11 12
View from component side
1 SD0
SD1
2
SD2
3
4 SD3
SCAN[0..5]
SCAN0
SCAN1
+ 5
D
SCAN2
SCAN3
SCAN4
SCAN5
SCAN5
SCAN4
SCAN3
SCAN2
SCAN1 SD0
SCAN0 SD1
SD5 SD2
SD4 SD3
SD4
SD5
C23
C4 100nF
100uF16H7 SD[0..5]
Input: pull-down resistors are
D on the main-board.
IN OUT
SCANO SCAN1 SCAN2 SCAN3 SCAN4 SCAN5
PORT3 PORT4 PORT5 PORT6 PORT7 PB4
PA3 PA4 PA5 PA6 P60 PB4
VR1A
RK14K12C
A
+ 1
2
C8 NIU
R39
CN4
33uF16H7
SEND L
1
1
2 23
2
SEND R R40
3 24
3
68k
4 1
4
5 14
5
6 13 A
6
7
7
8
8
R43
53015_0810
NIU
A
C19 - 1 2
C17
33uF16H7
A R47
68k
HP-1 MH/RW, HP-2e RW/LA
13 14 15 16 17 18
D+5V
TLHR4401 TLHR4401 TLHR4401 TLHR4401 TLHR4401
LED1 LED2 LED3 LED4 LED5
R20 R21 R22 R23 R24
180 180 180 180 180
3 3 3 3 3
Q5 Q6
Q7 Q8 Q9
D D D D D
DTC114ES
DTC114ES DTC114ES DTC114ES DTC114ES
PB5 PB6 PB7
PB5 PB6 PB7
C7
33pF
R36
10K R37
4K7
UPC4570HA
3
-
IC3A RETURN L
2
4
+
R48
NIU
C14
33pF
A
R46
4K7
R45
10K 7 UPC4570HA
-
IC3B RETURN R
8
6
+
R49
A NIU
22
19 20 21 22 23 24
TLHR4401
SW1
SW2 SW3
LED6 1 2 1 2 1 2
EVQPAE05R EVQPAE05R
R25
EVQPAE05R
180
3
Q10
D
DTC114ES
D
VR1B
10
RK14K12C
13289251
+ 1
2
C12 100nF
33uF16H7 C24
NIU
-
IC3C
+
A UPC4570HA
C25
C16
NIU
33uF16H7
100nF
- 1 2
Mar, 2002
25 26 27 28 29 30
SW5 SW6
SW4
1 2 1 2 1 2
EVQPAE05R
EVQPAE05R
EVQPAE05R