Korg wavestation Service Manual page 38

9.
IC
CHECK
POINT
MB622472
(
MAPI
6
)
1.
Are Control Data Signals from CPU received into
AS, R/W,
HDS and LDS
?
2.
Are Chip Select Signals transmitted from
ROM,
TG88,
DF88,
LCD and MDE
?
5V
OV
2V/SWEEP STOP
When
the power
is
turned
on,
Low Pulse
is transmitted.
When the key
is pressed,
Low Pulses are transmitted from ROM and
TG88.
When
the indicatoin
of LCD
is changed, Low Pulse
is
transmitted from
LCD.
3.
Are Read/Write Signals transmitted from
RD, LDWR,
LWR ?
4.
Are Control Signals to SRAM transmitted from
LSOE, LSWE
NLOE,
MSWE,
NMOE, NMWE
?
NLWE,
MSOE,
MB87726
(
TG88
)
1.
Is
Reset Signal received into XREST
?
2. Is
Master Clock 32MHz received into CLK
?
3.
Are Chip Select Signals
to Wave ROM transmitted from
WB0~3
?
4.
Are Voice Number Signals to DF88 transmitted from
VN0~4
?
VNO
2
-J
3
-
4
-
32uS-
2V/5uS
40