Roland GW-7 - Block Diagram

27
Mar.2005 GW-7
BLOCK DIAGRAM
fig.block.eps
5V bus
IC8
DRAM
Work RAM
CPU
SH-2/7016
28.224MHz
Flash ROM
Preset,User
MBM29LV320BE
32Mbit
LCD UNIT
8bit
16Mbit
Flash ROM
Program ROM
MBM29LV160BE
16Mbit
buffer
IC36 IC5
7.056MHz
X1
16x1charactor,ICONs
LCD
MAIN BOARD
IC3
16bit
X2
12.000MHz
USBC
IC24
M66291GP
16bit
16bit 8bit
ENC SW LED
D-Beam
SW LED
PANEL-R BOARD
OUTPUT
VOLUME
PANEL-L BOARD
IC28
KSM
KeyScan
16bit16bit
M11L16161SA
S1L50282F32H200
USBC
USB
DAC
AK4324
XP-7
IC21
TC203C180AF003
16bit
Wave Bus
IC22
128Mbit
Mask ROM
Wave ROM
EFX Bus
8bit
X3
24.576MHz
CN8
d
Keyboard UNITc
b
PHONES
OUTPUT_L/R
3.3V bus
f
IC29
DRAM
4Mbit
M11L416256SA-35TG
CN5
CN2
CN1
UCZ24080
CN9
IC22 uses different parts in GW-7 and GW-7C.
EXCEPT FOR CHINA : MR27V12800J-143TN03S
FOR CHINA : MR27V12800J-OTDTN03A
b
e
c
a
f
d
e
This wiring is soldered to the LCD unit.
PEDAL
HOLD CONTROL
a
BENDER
IN
MIDI
OUT
CN4
This wiring is soldered to the Keyboard unit.
#03892945 WIRING 4X180-P2.0-PHR-PHR-F
#03903178 WIRING 5X130-P2.0-PHR-PHR-F
#02010690 BNCD-P=1.25-K-16-260
#03892969 BNCD-P=1.25-K-18-160
EFX RAM
VR