VM88 VM88
36 9
CPU, DIGITAL, MAIN
C905
0.1
C908
22P
C907
22P
X901
20MHz
DGND
D+5 B
C906
0.1
DGND
D+5
75
/MUTE
DGND
R925
47K
R926
47K
C916
0.1
C917
0.1
DGND
DGND
D+5
R919
10K
R920
10K
D+5
WRQ_DSP
RST_ D SP
DRDY _DSP
WRDY _DSP
VSA
7
CT
1
/RST
8
OC
3
GND
4
VCC
5
VSB
6
VSC
2
U902
NJM2103
D+5
C920
10/16
DGND
x 8
2 3
1
U906
DTA114EK
R921
10K
R923
10K
A-15
+PWR
R922
10K
2
1
3
U904
DTC114EK
2
1
3
U905
DTC114 EK
C922
100/25
MUTE
S1
R927
100K
C918
10/16
DGND DGND
D+5B
DGND
C904
330/6.3
D+5.6
DGND
DGND DGND
R924 100
D906
1SS355
D907
1SS355
D905
1SS355
D+5
DGND
C 919
0.0 1
C921
100P
12
U903A
34
U903B
VCC
14
GND
7
U903G
9 8
U903D
74VHC14
11
10
U903E
74VHC14
1312
U903F
B+3
DGND
D+5
D904
CRS 02
D910
DSK10C
R995
10K
R994
30K
D+5.6
R916
10K
R932
10K
R20
47K
R21
47K
R22
47K
R23
47K
R24
47K
R25
47K
R26
47K
R27
47K
DGND
R2 8
47K
R29
47K
DGND
DGND
R30 0
R31 160K
C958
NON
DGND
D+5
D903
R32
NON
P64, A4
FOOT_SW1
FOOT_SW0
KEY08
KEY00
KEY01
KEY02
KEY03
KEY04
KEY05
KEY06
KEY07
LED7
LED6
LED5
LED4
LED3
LED2
LED1
LED0
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
LED7
LED6
LED5
LED4
LED3
LED2
LED1
LED0
LEDK7
LEDK6
LEDK5
LEDK4
LEDK3
LEDK2
LEDK1
LEDK0
KEY8
KEY0
KEY1
KEY2
KEY3
KEY4
KEY5
KEY6
KEY7
STO_OFF
F_SW0
R915
R914
R913
R912
R911
R910
R909
R908
F_SW0
STO_OFF
KEY[0...8]
LEDK[0...7]
KEY[0...8]
LEDK[0...7]
/DIG03
/DIG02
/DIG01
/DIG00
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
RS-LCD
/+48
E-LCD
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
DIG3
DIG2
DIG1
DIG0
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
LCD_RS
D[0...7]
A[0...4]
DIG[0...3]
LCD_E
LCD_RS
D[0...7]
A[0...4]
DIG[0...3]
LCD_E
74VHC14 (5V)
74VHC14
JOG0
JOG0
74VHC14
74VHC14
JOG1
JOG1
CPU
U901
MN101C28
/WR_DIF
/RD_DIF
/CS_DIF
/RST_DIF
WRDY_DSP
STOP
IRQ3, P23
IRQ2, P22
DRDY-DSP
STOP2
/REQ-DSP
/RST-DSP
/RST-CODEC
/RST-INIT
MODE0
RST
DSPSEL3
DSPSEL2
DSPSEL1
SBO1, P03
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
STOP
JOGIN0
JOGIN1
/CODEC_RST
/RST-DIF
EXT/INT
/RST_CPU
SEL3
SEL2
SEL1
EXT/INT
/CODEC_RST
DRDY-DSP
WRQ_DSP
WRQ-DSP
RST-DSP
/WR_DIF
/RD_DIF
/CS_DIF
/INIT_RST
PHTM
SEL[1...3]
SEL[1...3]
SW-PUSH
NON
VREF-
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VREF+
VDD
OSC2
OSC1
VSS
XI
XO
MMOD
SI-DSP (CPUTX)
SO-DSP (CPURX)
CLK-DSP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
VR0
VR1
VR2
VR3
VR4
VR5
VR6
VR0
VR1
VR2
VR3
VR4
VR5
VR6
C909
0.01
C910
0.01
C911
0.01
C912
0.01
C913
0.01
C914
0.01
C915
0.01
VR[0...6]
R917 100
SCK_DSP
SO_DSP
SI_DSP
SI
100
SCK
R918
SCK_DSP
SO_DSP
SI_DSP
MUTE
/RST_DIF
/WR_DIF
/RD_DIF
/CS_DIF
/INIT_RST
PHTM
RESET
VR[0...6]
2. MAIN_D, CPU
1. MAIN_D, ROOT
3. MAIN_D, DSP_ROOT
7. MAIN_D, GA_DIF
4. MAIN_D, DSP1 2
5. MAIN_D, DSP3
6. MAIN_D, DSP SEL
8. MAIN_D, PLL
3-5. Key Check
While holding down both the PAN/EQ and EFF/AUX keys, press the LEVEL ADJUST key. In this mode, the name
of key will be displayed when the corresponding key is pressed. The figure below is an example when the SCENE
STORE key is pressed. To go back to the normal mode display, rotate the DATA WHEEL.
If the ST OUT switch is pressed, “ST_OUT_ON” is always displayed on the LCD in the Key Check
mode. In this condition, if other key is pressed, “**_NG_**” will appear on the LCD. In order to check
the key function, release the ST switch. (The LED meter blinks when the ST switch is released.)
CAUTION:
3-6. Test Scene
While holding down both the PAN/EQ and EFF/AUX keys, press the SCENE RECALL key. This mode is designed
for the test executed at our manufacturer and has nothing to do with servicing the unit. In order to go back to the
normal mix mode, recall the “Init. Mix: 00”.
3-7. Memory Clear
While holding down both the PAN/EQ and EFF/AUX keys, press the SCENE STORE key. In the condition that
“ClearMem?” is displayed, pressing the ENTER key would initialize the memory and “ClearMem!” will appear on
the LCD. Pressing the RESET switch on the rear panel would initialize the memory as well.
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