Block Diagram - Roland Boss Dr.Groove DR-202 Service Notes

DR-202
1 2 3 4 5 6

BLOCK DIAGRAM

A
B
C
D
DR-202 Block Diagram
E
F
MIDI IN
G
MIDI OUT
H
ENCODER
I
J
VOLUME
K
L
VR103-108
M
FOOT
SWITCH
RESET IC
N
M51953
O
P
Q
R
S
T
U
4
7 8 9 10 11 12
LCD
CM1621-OS
CN3
LITIUM BATTERY
PHOTO COUPLER
PC-400
IC7
Data Bus
Address Bus
SRAM
IC2
TC551001CF-70L
PROGRAM ROM
CPU
IC10
IC5
LH5S471Y(MASK)
HD6415108RF
M27C4001-10F1(EPROM)
SOUND CHIP
IC6
TC6116AF
10MHz
IC3
CN1 CN101
CN202 CN201
SW BOARD
SW x35 LED x5
13 14 15 16 17
LPF VOLUME
BT1
CR2032
IC10
uPC4570 VR101
DAC
IC13
BU9480F
D+5
SOUND ROM
IC15
LH537NVP
PSRAM
IC1
LC33832M-10-TLM
X'TAL
X1
MAIN BOARD
MA-406 20MHz
18 19 20 21 22 23
EQ
LOW CUT/BOOST
L
R
VR102 IC102
M5216
PHONES
MUTING
CONTROL
A+9
POWER SW
SW1
DC IN
9V
SW REGULATOR
IC22
SI-8221L
BATTERY 9V
LR6(AA)Type x6
Jul, 1998
24 25 26 27 28
LINE OUT