Yamaha DTXPRESS User manual

■CONTENTS（目次）
SPECIFICATIONS…………………………………………… 3/4
PANEL LAYOUT……………………………………………… 5
CIRCUIT BOARD LAYOUT ………………………………… 6
BLOCK DIAGRAM…………………………………………… 7
DISASSEMBLY PROCEDURE……………………………… 8
LSI PIN DESCRIPTION……………………………………… 10
IC BLOCK DIAGRAM………………………………………… 11
CIRCUIT BOARDS…………………………………………… 12
TEST PROGRAM ………………………………………… 16/22
MIDI DATA FORMAT……………………………………… 30/32
ERROR MESSAGES……………………………………… 34/35
MIDI IMPLEMENTATION CHART …………………………… 36
PARTS LIST
11.25K-058 Printed in Japan '99.5
DRUM TRIGGER MODULE
SERVICE MANUAL
ED 011469
19990601-48000

2
DTXPRESS
IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that
basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the
users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components, and failure of the product to perform as specified. For these reasons, we
advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer
or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and
changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and /or plastic (where applicable)
components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to
cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT-
SOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to
solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.
LITHIUM BATTERY HANDLING
This product uses a lithium battery for memory back-up.
WARNING: Lithium batteries are dangerous because they can be exploded by improper handling. Observe the following
precautions when handling or replacing lithium batteries.
• Leave lithium battery replacement to qualified service personnel.
• Always replace with batteries of the same type.
• When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells.
Never solder directly to the cells. Perform the soldering as quickly as possible.
• Never reverse the battery polarities when installing.
• Do not short the batteries.
• Do not attempt to recharge these batteries.
• Do not disassemble the batteries.
• Never heat batteries or throw them into fire.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det
brugte batteri tilbage til leverandøren.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens instruktion.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
The following information complies with Dutch Official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OF
BATTERIES.
• Please refer to the diassembly procedure for the removal of Back-up Battery.
• Leest u voor het verwijderen van de backup batterij deze beschrijving.

DTXPRESS
3
Tone Generator 16 bit AWM2
Maximum polyphony 32
Voices 910 drum, percussion voices and effects
128 keyboard voices (GM system level 1)
Drum kits 48 Preset
32 User memory locations
Trigger setups 7 Preset
4 User memory locations
Sequencer tracks 2 (TR1, TR2)
Song control
Main song Start/Stop, note chase
Pad song 3 songs can be played at the same time, Trigger Control
Other Sequencer Functions MIDI sync play, Quantize (while recording, in Song Edit job mode),
Mute (rhythm mute, drum instrument mute), Groove Check
Song 95 Preset
32 User memory locations
Record modes Real-time
Controls
LED buttons 6 (PLAY, TRIGGER, UTILITY, VOICE, CLICK, SONG)
Buttons 9 (START/STOP, SAVE/ENTER, SHIFT, PAGEs/t, SELECT </>, VALUE–/+)
Knobs
MASTER VOLUME/POWER SW (push), ACCOMP. VOLUME, AUX VOLUME,
CLICK VOLUME
Display 16 x 2 LCD display (w/Back light)
Connections
Front Panel Aux input (stereo mini jack)
Head phone (stereo phone jack)
Rear Panel MIDI input/output
Foot controller (stereo phone jack)
HOST SELECT SW
TO HOST (mini DIN jack)
Output L/MONO (mono phone jack)
Output R (mono phone jack)
Trigger Inputs 1 – 8 (stereo phone jackmL : trigger input, R : rim switch)
Trigger Input 9/10 (stereo phone jackmL, R : trigger input)
Trigger attenuation switch 1-6 (DIP SW)
Power supply DC 12V/AC adaptor (PA-3B)
Power Requirement 4.8 Watt
Dimensions (W x H x D) 220 x 240 x 44 mm (8-11/16” x 9-3/16” x 1-5/16”)
Weight 1.6 kg (3 lbs 8 oz)
Accessories Owner’s Manual
AC adaptor (PA-3B)
* Specifications and descriptions avove are for information purposes only.
Yamaha Corp. reserves the right to change or modify products or specifications at any time without prior notice.
SPECIFICATIONS

4
DTXPRESS

DTXPRESS
5
L
H
MIDI IN/OUT Jack
Input Attenuation Switch (INPUT ATTENUATION)
Trigger Input Jack (1 KICK-8HI HAT)
Trigger Input Jack (9/10)
Hi-Hat Controller Jack (HI HAT CONTROL)
Host Select Switch
(HOST SELECT Mac/PC-1/PC-2/MIDI)
TO HOST Jack
Output Jacks (OUTPUT L/MONO, R)
Power Supply Jack (DC IN 12V)
Cord Hook
5
43 6
21 7
10 13 15 16
11
8
912 14
17
18
19
3
5 86
21
10
4 97
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
10
AUX IN Jack
AUX IN Volume (AUX IN VOL)
Head Phone Jack (PHONES)
Power Switch/Master Volume (POWER/VOL)
Click Volume (CLICK VOL)
Accompaniment Volume (ACCOMP VOL)
LCD Display
Play Button (PLAY)
Utility Button (UTIL)
Click Button (CLICK)
Trigger Button (TRIG)
Voice Button (VOICE)
Song Button (SONG)
Start/Stop Button (START/S)
Save/Enter Button (SAVE/ENT)
Shift Button (SHIFT)
Page Button [PAGE , PAGE ]
Select Button [SEL , SEL ]
Value Button (VALUE–, VALUE+)
PANEL LAYOUT
Rear Panel
Front Panel

6
DTXPRESS
CN201CN202CN203CN204
JK
MD
CIRCUIT BOARD LAYOUT
Chassis Unit
Front Panel
LCD PNAUX

DTXPRESS
7
DTXPRESS
BLOCK DIAGRAM
JKPN
AUX
DM
IC11
IC12
IC3 IC4
IC5
IC1
IC8 IC13 IC6
IC10
IC9
IC106
IC106
IC110
IC110
IC501
IC501
IC109
IC108
IC109
IC108
IC203IC205
IC209
IC209
KEC-54184
CN4
CN401
CN4
CN401
12
11
12
14 14
2
1
3
IC14
10
3
611 13
30
24 32
29
22 90 132CS2
88
46
15
3
42 31
57
31
57
31
57
31
57
VR101
5
IC101
12
76
11
6
15158 14159 16163
164
16P
IC7
20
152
1
153
22 21
154
PRD TXD0 RXD0 TXD1 RXD1
PDT10
PDT8
REPRESH
SMA21
PDT9
SMA23
131
95 74 41 73
SMA22
19
13
3
9
10
13
9
10 11
15
130
15
14
17
16
72
45
CS4
PORTC6
PORTC1
168P
CN3
CN203 CN204
CN502
CN2
CN
102 CN501
CN
202
CN1
POWER
SWITCH
SLIDE SWITCH
CS3

8
DTXPRESSDTXPRESS
1 Top Cover
1-1 Remove the five (5) screws marked [50]. The top
cover can then be removed. (Fig. 1)
2 Front Panel Unit
2-1 Remove the top cover. (See Procedure 1.)
2-2 Remove the four (4) screws marked [10c]. The front
panel unit can then be removed. (Fig. 3)
3 JK Circuit Board Assembly
3-1 Remove the top cover. (See Procedure 1.)
3-2 Remove the four (4) screws marked [C6]. The JK circuit
board assembly can then be removed. (Fig. 2)
DISASSEMBLY PROCEDURE
[50]
Top cover
(Fig. 1)
[50]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[50]
[50]
[50]
[50]
(Fig. 2)
[C6]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
(Fig. 3)
[10c]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[10c ]
[C6]
[10c ]
[C6]
JK
Front panel
4 DM Circuit Board Assembly
4-1 Remove the top cover. (See Procedure 1.)
4-2 Remove the front panel unit. (See Procedure 2.)
4-3 Remove the JK circuit board assembly. (See Procedure 3.)
4-4 Remove the eight (8) screws marked [C3] and the two
(2) screws marked [C4]. The DM circuit board assembly
can then be removed. (Fig. 4)
5 LCD Circuit Board Assembly
5-1 Remove the top cover. (See Procedure 1.)
5-2 Remove the front panel unit. (See Procedure 2.)
5-3 Remove the four (4) screws marked [4]. The LCD circuit
board assembly can then be removed. (Fig. 5)
6 AUX Circuit Board Assembly
6-1 Remove the top cover. (See Procedure 1)
6-2 Remove the front panel unit. (See Procedure 2.)
6-3 Remove the two (2) screws marked [6]. The AUX
circuit board assembly with AUX stay can then be
removed. Remove the two (2) knobs marked [A], the
two (2) hexagonal nuts marked [B] and the screw
marked [5c]. The AUX circuit board can then be
removed. (Fig. 5)
7 PN Circuit Board Assembly
7-1 Remove the top cover. (See Procedure 1)
7-2 Remove the front panel unit. (See Procedure 2.)
7-3 Remove the two (2) screws marked [A9], the panel
stay and the three (3) screws marked [B9]. The PN
circuit board assembly can then be removed. (Fig. 5)
(Fig. 4)
[C3]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[C4]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
[C4]
[C3]
[C3]
[C3]
DM

DTXPRESS
9
Front panel
(
Fi
g
. 5
)
[4]: Bind Head Tapping Screw-P 2.6X8 MFZN2Y (EP620100)
[5c]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[6]: Bind Head Tapping Screw-B 2.6X8 MFZN2Y (EP620100)
[9]: Bind Head Tapping Screw-P 2.6X8 MFZN2BL (EP620100)
[4] x4
[6] x2
[5c]
[9B] x3
[9A] x2
Panel stay
PN
LCD
AUX
Stay
[A]
[B]

10
DTXPRESS
PIN
No. NAME I/O FUNCTION
PIN
No. NAME I/O FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
ICN
RFCLKI
TM2
AVDD_PLL
AVSS_PLL
MODE0
VCC7
GND8
XIN
XOUT
MODE1
TEST0
TESTON
AN0-P40
AN1-P41
AN2-P42
AN3-P43
AVDD_AN
AVSS_AN
TXD0
TXD1
EXCLK
SMD11
SMD4
SMD3
SMD12
SMD10
SMD5
SMD2
SMD13
SMD9
SMD6
SMD1
SMD14
VCC35
GND36
SMD8
SMD7
SMD0
SMD15
SOE
SWE
SRAS
SCAS
REFRESH
CS0
SMA0
SMA16
VCC49
GND50
SMA1
SMA15
SMA2
SMA14
SMA3
SMA13
SMA4
SMA12
SMA5
GND60
VCC61
SMA11
SMA6
SMA10
SMA7
SMA9
SMA17
SMA8
SMA18
SMA19
SMA20
SMA21
SMA22
SMA23
CMA20
CMA19
VCC77
GND78
CMA18
CMA17
CMA5
CMA6
CMA4
CMA7
I
I
I
I
I
O
I
I
I
I
I
I
I
O
O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Initial clear
PLL Clock
PLL Control
Power supply
Ground
SWX dual mode
Power supply
Ground
crystal oscillator
crystal oscillator
SWX separate mode
TEST pin
TEST pin
A/D converter
A/D converter
A/D converter
A/D converter
Power supply
Ground
for MIDI or TO-HOST
for MIDI
Crystal oscillator
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
Power supply
Ground
Wave memory data bus
Wave memory data bus
Wave memory data bus
Wave memory data bus
read signal
write signal
RAS signal
CAS signal
REFRESH signal
CS signal
Memory address bus
Memory address bus
Power supply
Ground
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Ground
Power supply
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Memory address bus
Program address bus
Program address bus
Power supply
Ground
Program address bus
Program address bus
Program address bus
Program address bus
Program address bus
Program address bus
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
CMA3
CMA8
CMA2
CRD
CMA1
CUB
VCC91
GHND92
CS1
CMA0
CLB
CMA12
CMA11
CMA10
CMA9
GND100
CWE
CMA16
CMA15
CMA14
CMA13
CMD8
CMD7
CMD9
CMD6
CMD10
CMD5
CMD11
CMD4
CMD12
CMD3
CMD13
CMD2
CMD14
VCC119
GND115
CMD1
CMD15
CMD0
CMA21
PDT15
PDT14
PDT13
PDT12
PDT11
PDT10
PDT9
PDT8
VCC133
GND134
PDT7
PDT6
PDT5
PDT4
PDT3
PDT2
PDT1
PDT0
VCA143
GND144
PAD2
PAD1
PAD0
VCC148
GND149
PCS
PWR
PRD
RXD0
RXD1
SCLKI
ADIN
ADLR
DO0
DO1
SYSCLK
VCC161
GND162
WCLK
QCLK
BCLK
SYI
IRQ0
NMI
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
I
I
I
I
I
I
I
O
O
O
O
O
O
O
I
I
I
Program address bus
Program address bus
Program address bus
read signal
Program address bus
high byte effective signal
Power supply
Ground
CS signal
Program address bus
low byte effective signal
Program address bus
Program address bus
Program address bus
Program address bus
Ground
write signal
Program address bus
Program address bus
Program address bus
Program address bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program memory Data bus
Power supply
Ground
Program memory Data bus
Program memory Data bus
Program memory Data bus
Program address bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
Power supply
Ground
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
SWX access data bus
Power supply
Ground
SWX access address bus
SWX access address bus
SWX access address bus
Power supply
Ground
Chip select
write enable
read enable
for Midi or TO-HOST
for Midi or Key scan
EXT Clock
A/D converter
A/D converter LR clock
DAC
DAC
1/2 clock
Power supply
Ground
for DAC LR clock
1/12 clock
IIS-DAC clock
Synch signal
Interrupt request
Interrupt request
HG73C205FD (XU947A00) SWX000 TONE GENERATOR DM IC001
LSI PIN DESCRIPTION

DTXPRESS
11
DTXPRESS
11A
2
3
4
5
6
7
1Y
2A
2Y
3A
3Y
GND 8
9
10
11
12
13
14 VDD
6A
6Y
5A
5Y
4A
4Y
SN74HC14NSR (XC725A00)
Inverter
AUX IC201,202
11A
2
3
4
5
6
7
1B
1Y
2A
2B
2Y
GND 8
9
10
11
12
13
14 VCC
4B
4A
4Y
3B
3A
3Y
TC74HC32F-T1 (XD599A00)
OR
DM IC14
1D1R
2
3
4
5
6
7
8
9
10
A1
A2
A3
A4
A5
A6
A7
A8
GND 11
12
13
14
15
16
17
18
19
20 VCC
G
B1
B2
B3
B4
B5
B6
B7
B8
SN74HC245NSR (XD838A00)
Buffer
DM IC11
1
2
3
4-V
8
7
6
5
Output A +V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A
+-
+-
µPC4570G2 (XF291A00)
Dual Operational Amplifier
DM IC106,109,110, AUX IC501
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
SC7SU04FEL (XI348A00)
Hex Inverter
DM IC9,105
Q
DCK
OE
Q
DCK
OE
Q
DCK
OE
Q
DCK
OE
OUTPUT
CONTROL
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
120
219
318
417
516
615
714
813
912
10 11
Vcc
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
Q
DCK
OE
Q
DCK
OE
Q
DCK
OE
Q
DCK
OE
SN74HC374ANSR (XQ042A00)
Octal 3-state D-Type Flip-Flop
DM IC12
IC BLOCK DIAGRAM
MB3790PF (XR967A00)
ASSP
DM IC8
2
3
4
5
6
7
8
9
10
11
12
16
14
13
C
T
V
BAT2
V
BAT1
ALARM2
RESET
RESET
ALARM1
V OUT
V OUT
V IN
V IN
V SENSE
CONTROL
GND
+
590k
240k
1.24V
Reference
Voltage
Power Supply
Circuit
SQ
R
100
SBD
2.65V
2.37V
500
V
IN
V IN
V OUT
V OUT
3µA
V th:3V
V th:1.5V
R CN 0.5
-
+
-
+
-
D OUTPUT
D -INPUT
C OUTPUT
B -INPUT
A OUTPUT 1
2
3
4
5
6
78
9
10
11
12
13
14
C +INPUTB +INPUT
A +INPUT
A -INPUT
D +INPUT
C -INPUT
B OUTPUT
NJM2902M-T1 (XR562A00)
Quad Operational Amplifier
AUX IC203 to 207
+-
+
-
+-
+
-
NJM4556AMT1 (XQ138A00)
Dual Operational Amplifier
DM IC108
SN75C1168NSR (XU073A00)
Line Driver
DM IC10
TC74HC4052AF (XS790A00)
Multiplexer
AUX IC208,209
1
2
3
4-V
8
7
6
5
Output A +V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A
+-
+-
1
2
3
4
5
6
7
1B
1A
1R
1DE
2R
2A
2B
16
15
14
13
12
11
V
CC
1D
1Y
1Z
2DE
2Z
2Y
8
GND 9
10
2D
1
2
3
4
5
6
7
15
14
13
12
11
10
160Y
2Y
Y-COM
3Y
1Y
INH
VEE
VDD
2X
1X
X-COM
0X
3X
B
A
8 9VSS
2Y
0Y
Y-COM
3Y
1Y
INH
B
2X
1X
X-COM
0X
3X
A
PIN
No. NAME I/O FUNCTION
PIN
No. NAME I/O FUNCTION
1
2
3
4
5
6
7
8
4/8FS
D. GND
16/8 BIT
D. VDD
A. GND
R. OUT
A. VDD
A. VDD
I
I
O
4/8 Fs selection
Digital ground
16 bit/8 bit selection
Digital power supply
Analog ground
Channel R output
Analog power supply
9
10
11
12
13
14
15
16
R. REF
L. REF
L. OUT
A. GND
LRCX/WD
LR/RSI
SI/LSI
CLK
O
I
I
I
I
Channel R voltage reference
Channel L voltage reference
Channel L output
Analog ground
Left/right check, Word clock
Left/right selection, Channel R series input
Series input/Channel L series input
Clock
µPD63200GS-E1 (XP867A00) DAC (Digital to Analog Converter) DM IC007

12
DTXPRESSDTXPRESS
HOST SELECT
DM: ENA-V355530
TO HOST
9/10
L/MONO ACCOMP VOL
DC IN 12V
R
HI HAT
CONTROL
OUT
IN
MIDI
CIRCUIT BOARDS
DM Circuit Board
Components side
OUTPUT
POWER/VOL
PHONES
to PN-CN401
to JK-CN202
to LCD UNIT
to JK-CN203

DTXPRESS
13
DTXPRESS
DM: ENA-V355530
DM Circuit Board
Pattern side

14
DTXPRESSDTXPRESS
8 HI HAT
to DM CN4
JK, PN: ENA-V374810
JK Circuit Board
Components side Pattern side
Components side
PN Circuit Board
7 CRASH 6 RIDE 5 TOM3 4 TOM2 3 TOM1 2 SNARE 1 KICK INPUT
ATTENUATION
to AUX-CN502 to DM-CN2 to DM-CN1 to DM-CN101

DTXPRESS
15
DTXPRESS
to DM-CN102
to JK-CN204
JK, AUX: ENA-V374810
JK Circuit Board
Components side Pattern side
Pattern side
AUX Circuit Board
AUX IN VOL
CLICK VOL
AUX IN

16
DTXPRESSDTXPRESS
T–01.
T–02.
T–03.
T–04.
T–05.
T–06.
T–07.
T–08.
T–09.
T–10.
T–11.
T–12.
T–13.
T–14.
T–15.
T–16.
T–17.
T–18.
T–19.
T–20.
T–21.
T–22.
T–23.
T–24.
T–25.
T–26.
T–27.
T–28.
T–29.
T–30.
T–31.
T–32.
T–33.
T–34.
T–35.
T–36.
T–37.
T–38.
T–39.
T–40.
T–41.
T–42.
T–43.
T–44.
T–45.
T–46.
T–47.
SRAM
WAVE ROM
EFFECT DRAM
BATTERY
MIDI
TO HOST
CLICK VOL
ACCOMP VOL
LCD
LED
PANEL SWITCH
ATTENUATOR SW IN 01
ATTENUATOR SW IN 02
ATTENUATOR SW IN 03
ATTENUATOR SW IN 04
ATTENUATOR SW IN 05
ATTENUATOR SW IN 06
TRIGGER IN 1
TRIGGER IN 2
TRIGGER IN 3
TRIGGER IN 4
TRIGGER IN 5
TRIGGER IN 6
TRIGGER IN 7
TRIGGER IN 8
TRIGGER IN 9
TRIGGER IN 10
RIM SW IN 1
RIM SW IN 2
RIM SW IN 3
RIM SW IN 4
RIM SW IN 5
RIM SW IN 6
RIM SW IN 7
RIM SW IN 8
HOST SELECT SW
H.H. CONT.
OUTPUT L 1 kHz
OUTPUT R 1 kHz
OUTPUT L 10 kHz
OUTPUT R 10 kHz
OUTPUT L 50 Hz
OUTPUT R 50 Hz
AUX INPUT
32ch OUT
FACTORY SET
EXIT
SRAM READ/WRITE (AutomaticTest)
WAVE ROM READ (Automatic Test)
DRAM READ/WRITE (Automatic Test)
Automatic Test
MIDI IN to OUT Connect
TO HOST Loop Back Cable Connect
Maximum, Minimum
Maximum, Minimum
Display of each pattern of LCD, Contrast
LED ON/OFF
Panel SW ON
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
The loop signal is input from PHONES.
Switch ON/OFF Check
Switch ON/OFF Check
Switch ON/OFF Check
Switch ON/OFF Check
Switch ON/OFF Check
Switch ON/OFF Check
Switch ON/OFF Check
Switch ON/OFF Check
HOST SELECT Switch Check
Maximum, Minimum
Measurement
Measurement
Measurement
Measurement
Measurement
Measurement
Measurement
Listening
Test No. Items Judgment Criteria
TEST PROGRAM
A. How to enter the Program
While pressing the [PLAY] and [START/S] buttons turn
the power switch on. When the test program is initiated,
the Program ROM version will appear on the LCD display.
XX TEST MODE
Ver #.##
Note: The Ver #.## means the program ROM version.
A few second later, the following display appears:
01 SRAM
B. Proceeding through the Test Program
When entering the test program, the following display will
appear.
01 SRAM
To select a test program number, use the [ SEL.] or
[SEL. ] buttons. After making your selection, push the
[SAVE/ENT.] button to begin the test program. It will
proceed automatically.
If the test fails, the [FAIL] message is displayed on the
LCD. To move on to another test program when the test
has failed, depress the [SHIFT] button and select the new
test program.
Exception: If test number T-11 fails, turn the power switch
off and re-enter the test program.
T–01. SRAM
Initial Display
01 SRAM
Executes a write/read/verify test of SRAM (IC6).
Result Screens
OK: It proceds to the next test automatically.
NG 01 SRAM
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–02. WAVE ROM
Initial Display
02 WAVE ROM
Reads and verifies the WAVE ROMs (IC3, IC4) through
the SWX00.
Result Screens
OK: It proceds to the next test automatically.
NG 02 WAVE ROM
FAIL WROM IC3
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–03. EFFECT DRAM
Initial Display
03 EFFECT DRAM
Reads and verifies the DRAM (IC5) through the SWX00.
Result Screens
OK: It proceds to the next test automatically.
NG 03 EFFECT DRAM
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–04. BATTERY
Initial Display
04 BATTERY
Checks battery strength.
Result Screens
OK: It proceds to the next test automatically.
NG 04 BATTERY
FAIL

DTXPRESS
17
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–05. MIDI
Initial Display
05 MIDI
This test checks the MIDI IN and MIDI OUT operation.
Before starting the test, connect the MIDI IN and MIDI
OUT connectors using a MIDI cable.
Result Screens
OK: It proceds to the next test automatically.
NG 05 MIDI
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–06. TO HOST
Initial Display
06 TO HOST
The factory utilizes this test, and it is not intended for field
service use.
T–07. CLICK VOL
Initial Display
07 CLICK VOL
XX
Checks that the CLICK volume knob operates normally.
The numbers 00 to 99 will be indicated on the MEASURE
INPUT part of the LCD when turning the CLICK volume
from minimum to maximum position or vice versa
Result Screens
OK: It proceds to the next test automatically
NG 07 CLICK VOL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–08. ACCOMP.VOL
Initial Display
08 ACCOMP VOL
XX
Checks that the ACCOMP volume knob operates normally.
The numbers 00 to 99 will be indicated on the MEASURE
INPUT part the LCD when turning the ACCOMP volume
from minimum to maximum position or vice versa.
Result Screens
OK: It proceds to the next test automatically
NG 08 ACCOMP VOL
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–09. LCD
Initial Display
Blank
Check that all dots of the LCD brink. After checking the
backlight, press the [SAVE/ENT.] button.
Result Screens
Blank
Test End
OK: It proceeds to the next test automatically.
T–10. LED
Initial Display
10 LED
Use this test to visually confirm that all LEDs are
producing appropriate brightness. Panel LEDs light the
following order: [PLAY]
[UTIL.]
[CLICK]
[TRIG.]
[KIT]
[SONG]
This test mode lights all LEDs, then ends.
Result Screens
Blank
Test End
Press the [SAVE/ENT.] button. The DTXPRESS will
automatically proceed to the next test.

18
DTXPRESS
T–11. Panel Switch
Initial Display
11 SW
This test checks the panel switches.
Press the panel switches one by one from [PLAY] to
[VALUE+] button in the order displayed on the LCD.
The test orders are as follows:
11 SW
[PLAY]
[PLAY], [UTIL.], [CLICK], [TRIG.], [VOICE]
[SONG], [START], [SAVE/], [SHIFT], [PAGE–]
[SEL <], [VAL–], [PAGE+], [SEL>], [VAL+]
Result Screens
OK: It proceds to the next test automatically
NG 11 SW
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–12. Attenuator Switch IN 01
T–13. Attenuator Switch IN 02
T–14. Attenuator Switch IN 03
T–15. Attenuator Switch IN 04
T–16. Attenuator Switch IN 05
T–17. Attenuator Switch IN 06
Initial Display
12 ATT. SW IN01
waiting too Lo
Flip the attenuator switch to the down position. (Switch
SW1-6 to the down position.)
Insert one end of, the stereo cable into the PHONES jack
and the other into the 1.KICK jack. Then check whether
there is signal leakage from any of the other inputs.
OK 13 ATT. SW IN02
waiting
When the next attenuator switch number appears in the
display (e.g. IN02), insert the appropriate end of the stereo
cable into the relevant jack (e.g. 2.SNARE). Repeat this
process for all remaining switches.
Result Screens
OK: It proceds to the next test automatically
NG 12 ATT. SW IN01
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–18. TRIGGER IN 01: 1 KICK
T–19. TRIGGER IN 02: 2 SNARE
T–20. TRIGGER IN 03: 3 TOM1
T–21. TRIGGER IN 04: 4 TOM2
T–22. TRIGGER IN 05: 5 TOM3
T–23. TRIGGER IN 06: 6 RIDE
T–24. TRIGGER IN 07: 7 CRASH
T–25. TRIGGER IN 08: 8 HIHAT
T–26. TRIGGER IN 09: 9/10
T–27. TRIGGER IN 10: 9/10
Initial Display
18 TRIGGER IN01
waiting too Lo
Flip the attenuator switch to the down position. (Switch
SW1-6 to the down position.)
Insert one end of, the stereo cable into the PHONES jack
and the other into the 1.KICK jack. Then check whether
there is signal leakage from any of the other inputs.
OK 19 TRIGGER IN02
waiting too Lo
When the next attenuator switch number appears in the
display (e.g. IN02), insert the appropriate end of the stereo
cable into the relevant jack (e.g. 9/10). Repeat this process
for all remaining switches.
Result Screens
OK: It proceeds to the next test automatically.
NG 18 TRIGGER IN01
FAIL XXXXX
(XXXXXX= too High; too Lo; XtalkIN 2; BAD curve)

DTXPRESS
19
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–28. RIM SW IN 1: 1 KICK
T–29. RIM SW IN 2: 2 SNARE
T–30. RIM SW IN 3: 3 TOM1
T–31. RIM SW IN 4: 4 TOM2
T–32. RIM SW IN 5: 5 TOM3
T–33. RIM SW IN 6: 6 RIDE
T–34. RIM SW IN 7: 7 CRASH
T–35. RIM SW IN 8: 8 HIHAT
Initial Display
28 RIM SW IN01
waiting
The pad with the RIM switch must be connected to one of
(1.KICK to 8.HI.HAT). Check for signal leakage.
28 RIM SW IN01
waiting
OK 29 RIM SW IN02
waiting
When the next attenuator switch number appears in the
display (e.g. IN02), insert the appropriate end of the stereo
cable into the relevant jack (e.g. 8.HI.HAT). Repeat this
process for all remaining switches.
Result Screens
OK: It proceeds to the next test automatically.
NG 28 RIM SW IN01
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–36. HOST SELECT SW
Initial Display
36 HOST SELECT
[XXXXX]
(XXXXXX= MAC; PC-1; PC-2; MIDI)
This test checks the HOST SELECT switch.
Set the HOST SELECT switch to match the display.
Result Screens
OK: It proceeds to the next test automatically.
NG 36 HOST SELECT
FAIL
Test End
OK: It proceeds to the next test automatically.
If an error is detected during the test, refer to section B,
[PROCEEDING THROUGH THE TEST].
T–37. H.H. CONT
Initial Display
37 H.H. CONT
Insert the H. H. CONTROL plug and turn the
potentiometer from maximum to minimum position.
Result Screens
OK: It proceeds to the next test automatically.
NG: Blank
Test End
OK: It proceeds to the next test automatically.
T–38. OUTPUT L 1kHz
Initial Display
38 OUTPUT L 1kHz
This test checks the OUTPUT (L/MONO) for the specified
signal output level.
Insert the plugs into the OUTPUT (L/MONO and R) jacks.
Set the MASTER volume to maximum and AUX IN
volume to minimum. Use the frequency counter,
oscilloscope, distortion meter and level meter (with flat
filter) to measure frequency, waveform, distortion and
output level.
Check that the AUX IN jack is unplugged and that the
input voltage is less than -90 dBm.
Check points
Check that the output meets the following specifications:
OUTPUT (L/MONO):
1 kHz +/-3 Hz, sine wave, +0.6 +/-2 dBm (10 kohm
lord and distortion is less than 0.3 %)
OUTPUT (R):
Less than -65 dBm (w/ flat filter)
When the OUTPUT (R) is disconnected:
OUTPUT (L/MONO):
1 kHz +/-3 Hz, sine wave, -5.1 +/-2 dBm (10 kohm
lord and distortion is less than 0.3 %)

20
DTXPRESS
Test End
OK: It proceeds to the next test automatically.
T–39. OUTPUT R 1kHz
Initial Display
39 OUTPUT L 1kHz
This test checks the OUTPUT (R) for the specified signal
output level.
Insert the plugs into the OUTPUT (L/MONO and R). Set
the MASTER volume to maximum and AUX IN volume
to minimum. Use the frequency counter, oscilloscope,
distortion meter and level meter (with flat filter) to
measure frequency, waveform, distortion and output level.
Check that the AUX IN jack is unplugged and that the
input voltage is less than -90 dBm.
Check points
Check that the output meets the following specifications:
OUTPUT (L/MONO):
Less than -65 dBm (w/ flat filter)
OUTPUT (R):
1 kHz +/-3 Hz, sine wave, +0.6 +/-2 dBm (10 kohm
lord and distortion is less than 0.3 %)
OUTPUT (R):
Less than -65 dBm (w/ flat filter)
Test End
OK: It proceeds to the next test automatically.
T–40. OUTPUT L 10kHz
Initial Display
40 OUTPUT L 10kHz
This test checks the OUTPUT (L/MONO) for the specified
signal output level.
Insert the plugs into the OUTPUT (L/MONO and R). Set
the MASTER volume to maximum and AUX IN volume
to minimum. Use the frequency counter, oscilloscope,
distortion meter and level meter (with flat filter) to
measure frequency, waveform, distortion and output level.
In the AUX IN, check that the plug is not inserted, and the
input voltage is less than -90 dBm.
Check points
OUTPUT(L/MONO):
10 kHz +/-3 Hz, sine wave, +3.0 +/-2 dBm (10 kohm
lord and distortion is less than 0.3 %)
Test End
OK: It proceeds to the next test automatically.
T–41. OUTPUT R 10kHz
Initial Display
41 OUTPUT R 10kHz
This test checks the OUTPUT (R) for the specified signal
output level.
Insert the plugs into the OUTPUT (L/MONO and R). Set
the MASTER volume to maximum and AUX IN volume
to minimum. Use the frequency counter, oscilloscope,
distortion meter and level meter (with flat filter) to
measure frequency, waveform, distortion and output level.
In the AUX IN, check that the plug is not inserted, and the
input voltage is less than -90 dBm.
Check points
OUTPUT(L/MONO):
10 kHz +/-3 Hz, sine wave, +3.0 +/-2 dBm (10 kohm lord
and distortion is less than 0.3 %)
Test End
OK: It proceeds to the next test automatically.
T–42. OUTPUT L 50Hz
Initial Display
42 OUTPUT L 50Hz
This test checks the OUTPUT (R) for the specified signal
output level.
Insert the plugs into the OUTPUT (L/MONO and R) jacks.
Set the MASTER volume to maximum and AUX IN
volume to minimum. Use the frequency counter,
oscilloscope, distortion meter and level meter (with flat
filter) to measure frequency, waveform, distortion and
output level.
Check that the AUX IN jack is unplugged and that the
input voltage is less than -90 dBm.
Check points
OUTPUT(L/MONO):
50 Hz +/-3 Hz, sine wave, +2.7 +/-2 dBm (10 kohm
lord and distortion is less than 0.3 %)
Test End
OK: It proceeds to the next test automatically.
T–43. OUTPUT R 50Hz
Initial Display
43 OUTPUT R 50Hz