Roland ep-97 Service Notes

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7
11
EP-77
Dec, 1999
BLOCK DIAGRAM
BEAT & TEMPO BOARD
1
4
2
5
3
1
4
2
5
3
3 1 2 3 1 2
12
1
2
3
1 2 4 1 2 4 1 2 4 1 2 4
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
SW116
1 10
2 3 4 5 6
7
8
9
VR101
4
1
2
3
AVCC AMP POWERD+5V
LED+SW
MATRIX
SRAM
CPU
AAADD D
ADDRESS BUS
DATABUS
IP
OP
A
ED
EA
ED
A
D
WA
WD
XP
A
D
WAVE ROM
KEY SCAN
AD
D/A
DATA
LOUT
ROUT
LPF
CONTROL BOARD
MAIN BOARD
TMKBK
MIDI INMIDI OUT
L/M R
OUTPUT
R
L
IC4
RESET
JACK BOARD
IC5,IC7
IC10
IC6
IC14
IC9
IC12
IC16
IC18
IC17
AA
MASTER
VOLUME
PHOTOBUFFER
Q1
IC2
76 KEY KEYBOARD ASSY
PS RAM
RAS
UCAS
WE
RAS
CAS
EWE
IC5
POWER
IC6,Q7
-
SWITCH
DCIN
12V 1A
POWER
SUPPLY
+
DAMPER SOFT
JK2 JK3
INPUT
L(MONO) R
AMPL
JK5 JK4
EQ.
IC7
MUTE
CONTROL
MUTE
MUTE
Q2
Q3
A
Q4,Q5,Q8
IC3A
BRIDGE
AMPL.
RIGHT
LEFT
4 Ohm
4 Ohm
IC3B
BRIDGE
AMPL.
L-
L+
R+
R-
SPEAKERS
PHONES
A
L
R
PHONES BOARD
BEAT
TEMPO
AD BEAT
AD TEMPO
JK7 JK6
Ic21
Ic8
AVCC
A+5V +5VD
+3.3VD
IN INOUT OUT
4M-MASK Q
Q
1
2
4M-FLASH
Note
Q
Q
1=
2=
Mass Production
Develop.-Pre Product.

Roland ep-97 Specifications

General

Brand	Roland
Model	ep-97
Category	Musical Instrument
Language	English