Block Diagram - Roland ME-33 Service Notes

ME-33
A

BLOCK DIAGRAM

/ ブロック図
B
C
D
GUITAR IN
(MONO)
E
F
AUX IN
(STEREO)
G
OUTPUT
H
(STEREO)
I
J
PHONES
K
L
M
N
PEDAL BOARD
O
PHOTO
INTERRUPTOR
P
Q
R
LED DRIVER
S
7SEG LED
T
U
V
12
IC1
BUFFER
PRE ENPH
IC2
PRE ENPH
.
.
IC9
DE ENPH
AMP
MUTE
AMP
AMP
IC11
&LED LCD
IC3
AMP
MAIN BOARD
IC4
-
MULTI
-
PLEXER
-
IC7
.
. -
AD/DA
IC8
LPF
IC16 IC13
EEPROM RESET
IC14
IC15
CPU
BUS DSP
H8/3847R
ESP4
IC17,18
DRAM
SWITCH VR x 6
. .
. .
POWER SW
ADAPTOR IN
POWER
. .
+8VA +4VIN +4VOUT
BATTERY
+
A 9
A
DC-DC CNV
+
D 3
D
May. 2001