Block Diagram - Roland HP-1 Service Notes

1 2 3 4 5 6

BLOCK DIAGRAM

A
B
C
D
E
F
G
MAIN BOARD
H
IC5,IC7 IC22
SRAM 8M-FLASH
I
A D A D
J
ADDRESS BUS
K
IC14 IC9
A
RAS
RAS
UCAS CAS
XP
WE EWE
L D RAM
EA
A
ED ED
M
IC18
DATA
IC16
N
A D LOUT
D/A
KEY SCAN
ROUT
O T MK BK
AVCC A+5V
IN OUT
IC15
P
Q
R
S
KEYBOARD
T
U
7 8 9 10 11 12
PANEL BOARD
LED+SW MASTER
VOLUME
MATRIX
MIDI OUT
4
IC6 1
IP OP
XRES SOFT
IC9
CPU SOST
DAMPER
BUFFER
TX
RX
A D
DATA BUS
IC12
D
A
WA
WAVE ROM
D
WD
XRES
IC4
RESET
IC17
L
LPF
R
+5VD +3.3VD
IN OUT
IC27
88 KEYS TP-30
HP-1 MH/RW, HP-2e RW/LA
13 14 15 16 17 18
PEDAL UNIT FOR HP-2e PEDAL UNIT FOR HP-1
SOFT SOST DAMPER SOFT
MIDI IN PEDAL JACK
INPUT
8 LEFT/MONO RIGHT
5 4 5 6 7
3 1 3
1 3
IC15
4 5
PHOTO SOFT DAMPER Q12
SOST
Q13
Q14
SOFT SOST/DAMP
-VCC +VCC +5VD
D29
IC12
POWER
IC13
SUPPLY
IC14
Q20,Q32,Q22,Q28
MUTE
CONTROL
POWER
SWITCH
TRANSFORMER
AC
FILTER
AC INLET
16
19 20 21 22 23 24 25
PHONES BOARD
DAMPER
OUTPUT
LEFT/MONO RIGHT
Q21
POWER
MUTE
IC7
BUFFER
IC1
EQU IC3
Q3
Q9
EQU
IC2
EQU
PHONES
MUTE
OUT
MUTE
POWER & AMP. BOARD
Mar, 2002
26 27 28 29 30
A
Q17
Q26
Q1,Q2,Q5,Q6
AMPL.
Q4
Q10
Q7,Q8,Q11,Q12
AMPL.