Roland A-37 Service Notes

A-37

Sept, 2001

1

SERVICE NOTES

Issued by RES

First edition

Copyright © 2001 by ROLAND CORPORATION

All rights reserved. No parts of this publication may be reproduced in any form whithout the written permission of ROLAND CORPORATION.

SILKSCR. BOTTOM CABINET ASSY REMOVAL SCREW x10 Pcs

SELF TAP. SCREW 3,5x16 TCTCPRBZ Cod. J2289131

SN00053 K6018448 Printed in Italy (I00) (AD)

a-37

midi keyboard
controller

TABLE OF CONTENTS Page

SPECIFICATIONS 1
LOCATION OF CONTROLS 2
EXPLODED VIEW 3
KEYBOARD PARTS LIST 4
PARTS LIST 5
HOW TO VISUALIZE THE SYSTEM PROGRAM VERSION 6
HOW TO CARRY OUT THE FACTORY SETUP 6
HOW TO ENTER TEST MODE 6
BLOCK DIAGRAM 9
JACK PCB ASSY & CIRCUIT DIAGRAM 10
CPU PCB ASSY 10
CIRCUIT DIAGRAM (CPU PCB ASSY) 11
POWER SUPPLY PCB ASSY & CIRCUIT DIAGRAM 12
LEFT CONTROL PCB ASSY 12
CIRCUIT DIAGRAM (LEFT CONTROL PCB ASSY) 13
RIGHT CONTROL PCB ASSY & CIRCUIT DIAGRAM 14
RIGHT & LEFT CONTACT PCB ASSY & CIRCUIT DIAGRAM 15

Specifications

Keyboard: 76 keys, velocity sensitive, with channel Aftertouch

Display: 3 x 7 segments

Realtime controllers: Data Entry slider, Bender/Modulation lever, channel Aftertouch, Hold Foot Switch socket, Foot Pedal socket

Memories: 128 Patches

Connections: MIDI In, Out A, Out B, Thru, Expression Pedal, Sustain Footswitch, DC IN (adaptor)

Compatibility: GM/GM2/GS, all MIDI messages

Power supply : Batteries, AC/DC adaptor (DC 9V)

Dimension: 1195 (W) x 270 (D) x 113 (H) mm

Weight:: 7,7 Kg

Supplied accessories: 6 x dry batteries (AA type), MIDI cable, Owner’s Manual, Music Rest

Options: Roland ACA adaptor (9V, 200mA); DP-2, DP-6, or BOSS FS-5U footswitch; EV-5, Boss FV-300L expression pedal

Specifications subject to change without prior notice. All other trademarks mentioned in this manual are the property of the respective companies.

DISASSEMBLY

2

A-37

Sept, 2001

LOCATION OF CONTROLS

REAR VIEW

3

A-37

Sept, 2001

EXPLODED VIEW

4

A-37

Sept, 2001

KEYBOARD PARTS LIST

76 KEY KEYBOARD TP/9-AT Code: 7772109000

1

2

3

8

10

9

PMSM

5

76

4

*

CONTACT BOARDS ARE COMPLETE WITH RUBBER CONTACTS

*

Ref

1

2

3

4

5

6
7

8
9

10

11

*

PARTS NAME

KEY SPRING gr.63
NATURAL KEY C5 (gr.10) DO

RE
MI

FA

SOL

LA
SI

MI(I)

SOL(F)

NATURAL KEY D6 (gr.10)
NATURAL KEY E7 (gr.10)

NATURAL KEY F1 (gr.10)
NATURAL KEY G2 (gr.10)
NATURAL KEY A3 (gr.10)
NATURAL KEY B4 (gr.10)
NATURAL KEY C8 (gr.10)
NATURAL KEY G (gr.10)
MATT SHARP KEY (gr.10)

SELF TAP SCREW 2.9x8 TCTCPRBZ
12P RUBBER CONTACT

1P CONDUCTIVE RUBBER LR13/1

LEFT CONTACT BOARD W/RUBBER ASSY

RIGHT CONTACT BOARD W/RUBBER ASSY
PLASTIC CHASSIS
GUIDE BUSHING INFERIOR
GUIDE BUSHING SUPERIOR

CONTACT BOARDS ARE COMPLETE WITH RUBBER CONTACTS

SOL (F)

MI (I)

76KEY TP/9-ATKEYBOARD ASSY

PARTS NUMBER

n.

J2179101 76

6
6
6

7
6
6
6
1
1
31

42

7**
1

1

1
1

1

76
76

J2579112
J2579113
J2579114

J2579115
J2579116
J2579117
J2579118
J2579119
J2579121
J2579120

J2289126
2218523802

7625920000

7695005000

7695004000
J2589101
J2359104
22158789

11

LEFT

RIGHT

AB C

CCCD

C

12 P RUBBER CONTACT

D

C

** CUT AND ASSEMBLY OF RUBBER CONTACTS

B

A

SENSOR AFTER TOUCH

J3169112

A-37

Sept, 2001

5

CASING Q.ty

K2198102 MUSIC REST 1

22208320 MUSIC SCORE HOLDER 1
# 7772106000 VARN+SILKSCR. TOP CABINET A-37 1
# 7772107000 VARN+SILKSCR. BOTTOM CABINET A-37 1
# 7772108000 VARN. BATTERY COVER A-37 1

7770614000 SILKSCREENED PLEXIGLASS RD-150 1

KNOB BUTTON

K2478198 POT. COVER 1

K2478313 BUTTON 20X10 WHITE 8

K2478314 BUTTON 20X10 DARK GREY 13
# K2478346 BUTTON 20X10 (RED) 1

SWITCH

J3169105 SWITCH EVQ-PAE 05 R SW1,2,3,4,5,6,7 on CPU / SW1 => 15 on LCB 22

13159111 POWER SWITCH S SSP12114A SW1 on PS 1

JACK, SOCKET

13449125 JACK SOCKET HLJ0520-01-110 JK1 on JB 1

13449126 JACK SOCKET HLJ0520-01-010 JK4 on JB 1

13429825 5P DIN SOCKET YKF51-5054 (2PCS) JK1,2 on CPU 2

13449711 DC-SUPPLY SOC. HEC0470-01-630 JK3 on PS 1

DISPLAY UNIT

00239767 DISPLAY TYPE LB-603VF (RED) DS1 on LCB 1

KEYBOARD ASSY

# 7772109000 76 KEY KEYBOARD ASSY TP/9-AT 1

NOTE: For details, refer to KEYBOARD PARTS LIST (Page 4)

PCB ASSY

# 7772105000 POWER SUPPLY PCB ASSY A-37 1

7697603000 JACK SOCKETS ASSY A-33 1

7700420000 BOUNCE-TO-AFTERTOUCH ASSY 1
# 7772101000 RIGHT CONTROL PCB ASSY A-37 1
# 7772102000 LEFT CONTROL PCB ASSY A-37 1
# 7772103000 CPU PCB ASSY A-37 1

7695004000 RIGHT CONTACT BOARD W/RUBBER ASSY 1

7695005000 LEFT CONTACT BOARD W/RUBBER ASSY 1

IC

15229718RI I.C. 6N 137 PHOTO-COUPLER IC1 on CPU 1

15169550RI I.C. 74 HC138 DIP CMOS IC2 on LCB 1

15249111 I.C. TC7WU04 F FLAT CMOS IC13 on CPU 1

15259821 I.C. TC74HC573AF IC9 on CPU 1

00129278 I.C. SSC1080 FOB (CUSTOM IC) IC10 on CPU 1
# J5259153 I.C. AT24C64N-10SC 64K EPROM IC5 on CPU 1

15259884 I.C. TC7S08F MOS CMOS IC8 on CPU 1

15249104 I.C. TC7S04F FLAT IC11 on CPU 1

J5259149 I.C. TC74VHC541FT FLAT IC6 on CPU 1

15219183 I.C. M51953 AL (STANDING) IC7 on CPU 1

15149146 IC TD62583AP (INTERF.DRIVER IC) IC3 on LCB 1

15289141 I.C. M5223FP-600D IC12 on CPU 1
# 7772104000 I.C. MICRO CONTR.IC2 CPU (PROGRAM.) A-37 IC2 on CPU 1

TRANSISTOR

15319101 TRANSISTOR 2SC-2412K Q5 on CPU 1

15329503 TRANSISTOR DTA-124 EK CHIP Q1,2,3 on CPU 3

15329516 TRANSISTOR DTC-114EK Q4 on CPU 1

15119163 TRANSISTOR RN2227 Q1,2,3,4 on LCB 4

J5119105 TRANSISTOR TN6717A Q3 on PS 1

DIODE

15019159RI DIODE 1N-4148 On LCB / on RCB / on RC/ on LC 158
15339108 DIODE DA-204K D1,2,3 on CPU 3
J5029112 LED DIODE 5 L-53 SRD-D / RED D1 =>12 on LCB / D1,2,3,4 on RCB 16
15019345RI ZENER DIODE BZX79C 5.6V D5 on PS 1
J5019105 DIODE 1N 4002 D1 on PS 1

RESISTOR

J3919104 RESISTOR ARRAY EXB-A10E-103-J RA1,3,4,5,6 on CPU 5
J3919108 RESISTOR ARRAY EXB-V8V-103-JV RA2 on CPU 1
J3809129 UNINFL. RES. 220 OHM 0.6W 5% R1,2,3,4,5,6,7,8 on LCB 8

POTENTIOMETER

J3339101 LIN. POT. CURSOR 100KB 10 MS VR1 on LCB 1

CAPACITOR

J3629103 ELECTRL.COND. 100U 25V P5 C1 on PS 1
J3629104 ELECTRL.COND. 10U 50V P5 C21,22 on PS 2
J3629105 ELECTRL.COND. 47U 50V P5 C2 on PS 1
J5369103 ELECTR. COND. RV2 100U 16V (SMD) C30 on CPU 1
J5369104 ELECTR. COND. RV2 10U 16V (SMD) C2,11,16,23 on CPU 4
J5369102 ELECTR.COND. RV2 47U 16V SMD C3,5,65 on CPU 3
J5369106 ELECTR. COND. RV2 1U 50V (SMD) C20,33,64 on CPU 3
J3629150 ELECTR.COND. 47U 16V H.7 C3,2 on LCB 2

INDUCTOR, COIL, FILTER

<<EMI>> 12449382RI NOISE SUP. PLT1-R53C FL1 on PS 1
<<EMI>> 12449370 NOISE SUP. SBT-0160W L1,2,3,4 on CPU / L7,9 on JB 6
<<EMI>> 12449326 NOISE SUP. SBT-0460 L5 on CPU 1

CRYSTAL, RESONATOR

00894034 X-TAL 16 MHZ MA-406 X1 on CPU 1
01124812 QUARTZ 10 MHZ MA-406 X2 on CPU 1

CONNECTOR

13419677RI 16P FEM. CONNECTOR AMP 1.27 CN4,2 on CPU / on LC 3
13369689RI 20P FEM. CONNECTOR AMP 1.27 CN6 on CPU / on RC 2
J3429122 14P FEM. CONNECTOR AMP 1.27 CN1 on RCB / CN3 on CPU 2
13439479RI MALE CONN.AMP 6W STANDING CN1 on JB / CN8 on CPU 2
J3439123 6P MALE CONN. P. 2 M 90° CN4 on LCB 1
J3429120 3P MALE CONNECTOR P.2 M CN10 on CPU / CN401 on AFT 2
J3439168 4P MALE CONNECTOR 76384-404 CN402 on AFT 1

WIRING, CABLE

7695108001 16P FLAT CABLE (24) -2C From CN4 on CPU to LC 1
7700112000 3P CABLE ASSY (64) -2C P.2 From CN10 on CPU to CN401 on AFT 1

BATTERY

J2569102 2-BATTERY SET 'AA'-SIZE (ALK.) 3

SCREW

J2289122 SCREW 2.2X6 TC TC BRUN 2
J2289125 SCREW 2.9X10 TC TC PR TROP 32
J2289131 SELF TAP.SCREW 3.5X16 TCTCPRBZ 26
J2289118 SCREW 2.9X16 TC TC PR BRUN 5
J2289115 SCREW 3.5X9.5 TC PR TFR H.8 14
J2289186 SCREW 3.5X16 TCPR TFR H.8 BRUN 4

PACKING

# K2638260 RIGHT POLYST. END-SIDE A-37 1
# K2638261 LEFT POLYST. END-SIDE A-37 1

K2678109 CARTENE ENVELOPE HD 150X40 1
K2678106 POLYETH.ENVELOPE 4OX55 1

# K2618257 OUTER PACKING A-37 1

MISCELLANEOUS

K2168117 LED SPACER H.1,5 D.E.5,5 16
J2359101 SPACER 3M ART. SJ5012 4
22248470 ANTI-DUST COVER PL30N 1
13419723RI 9V BATTERY CONNECTION 1
12209532RI BATTERY HOLDER FOR 6 BATTERIES 1
22365708 HOLDER F/POWER SUPPLY CBL 1
13429823RI P. SUPPLY PLUG LOCKING 1

ACCESSORIES

23485228 MIDI CABLE 1M - BLACK 1
K6018109 MIDI GUIDE 1

# K6018447 OWNER'S MANUAL (E/D/F/SP/IT/OL) A-37 1

PARTS LIST A-37

When ordering any parts listed in the parts list,please specify the following items in the order sheet.

QTY PART NUMBER DESCRIPTION MODEL NUMBER

Ex. 10 22575241 Sharp Key C-20/50

15 2247017300 Knob (orange) DAC-15D
Failure to completely fill the above items with correct number and description will result in delayed or
even undelivered replacement.

CONSIDERATION ON PARTS ORDERING

NOTE:

# The parts marked " # '' are new (Initial Parts).

A The parts marked " A '' are new (Initial Parts).for RES but already used by RJA

The parts marked have Safety - Related characteristics.
Use only listed parts for replacement.

<< EMI >> Component for EMC.

NNoo ttee :: Replacement should be made on a unit basis. No replacements available for individual parts.

Replacement only be a unit.

SAFETY PRECAUTIONS :

The parts marked have
safety-related characteristics.
Use only listed parts for
replacement.

RCB = Right Control Board
LCB = Left Control Board
CPU = CPU Board
PS = Power Supply B.
JB = Jack Board
AFT = Bounce After Touch Board

!

!

!

A-37

Sept, 2001

6

a) Front Panel check (Controls)

Once you have entered the control panel check, press button 1:
The display visualizes:

If you press the button 1, you check the b

uttons.

If you press the button 2, you check the LEDs

.

If you press the button 3, you check the Controls (modulation, bender, data entry).

Buttons check

Once you have entered the front panel test mode, press button 1.
The display visualizes pict. A:

If you press the buttons of the control panel one after the other, the display will visualize their name.
When you release the button, the display will visualize: OFF (See pict. B).

Press EXIT and WRITE at the same time to exit.
The test procedure automatically goes back to the previous menu.

Note: It is not possible to go on to the following step if this test is not carried out correctly.
If you exit the test before checking all the buttons, the display indicates the name of the untested
buttons.
Press EXIT to go back to the main menu.

LED c

heck

Once you have entered the control panel check, press button 2.

The control panel LEDs and the display segments will light in sequence.
Press EXIT to leave this test.
Press EXIT again to go back to the main menu.

Contr

ol check (modulation, bender, data entry)

Once you have entered the control panel check, press button 3.
The display visualizes:

Pressing the button 1, you check the MODULA

TION (bender lever).

Pressing the button 2, you check the BENDER

.

Pressing the button 3, you check the DATA ENTRY potentiometer.

MODULA

TION

Once you have pressed the button 1, the display visualizes:
Pict. A (value 0) if the bender lever is released;
Pict. B (value 127) if the bender lever is moved completely forward.

A B

A B

TEST MODE

ITEMS REQUIRED:

· MIDI cable;

· Dumper Pedal;

· Expression Pedal EV-5;

· Digital multimeter.

HOW TO VISUALIZE THE SYSTEM PROGRAM VERSION

Turn the instrument on, while keeping pressed the button 2 of section PATCH.
After a few seconds, the display will visualize a writing identifying the software version:
i.e.: VER 100 - 26 jul 2001

To exit, turn the instrument off.

HOW TO CARRY OUT THE FACTORY SETUP

Turn the instrument on while keeping the button WRITE pressed.
After a few seconds, the display will visualize the writing Factory setup.

The Factory Setup function re-establishes the instrument's factory settings.

HOW TO ENTER TEST MODE

Turn the instrument on while keeping pressed the button 1 of section PATCH.

After a few seconds, the display will visualize the following writing:
TEST ROLAND A - 37 VERSION 1.00

Then the display visualizes:

Every button of section Patch corresponds to a test to carry out.

Button 1 ⇒ P

anel check ("F": Front, "R": Rear);

Button 2 ⇒ K

eyboard check

Button 3 ⇒ Memory check

Turn the instrument off to exit test mode.

Note: After carrying out the tests, the instrument automatically performs the Factory Setup.

1) PANEL CHECK (FRONT / REAR)

Once entered test mode, press button 1. The display visualizes:

If you press button 1, you check the Front Control Panel (a).
If you press button 2, you check the sockets placed on the Rear panel.

Press EXIT to come back to the previous menu.

A-37

Sept, 2001

7

Press EXIT to leave.
Press EXIT again to go back to the main menu.

BENDER

Once you have pressed the button 2, the display visualizes:
Pict. A (value 0) if the bender is in central position;
Pict. B (value 63) if the bender lever is moved completely rightwards;
Pict. C (value - 63) if the bender lever is moved completely leftwards.

Press EXIT to leave.
Press EXIT again to go back to the main menu.

D

ATA ENTRY

Once you have pressed button 3, the display visualizes:
Pict. A (value 0) if the potentiometer slider is in low position;
Pict. B (value 127) if the potentiometer slider is in high position.

Press EXIT to leave.
Press EXIT again to go back to the main menu.

b)

Rear Panel check (Socket)

Once you have entered the rear panel test mode rear panel, press button 2.
The display visualizes:

Press button 1, to check DUMPER and EXPRESSION

pedals.

Press button 2, to check the P

ower battery.

Press button 3, to check the MIDI.

DUMPER and EXPRESSION pedals check

Once you have entered the rear panel test mode, press button 1.
The display visualizes:

Press button 1, to check the DUMPER pedal.
Press button 2, to check the EXPRESSION pedal.

DUMPER PEDAL

Insert the Dumper Pedal into the HOLD SWITCH socket.
Once you have entered the pedals test mode, press button 1.

A B

A B C

If you press the pedal, the display visualzes the status (ON) of the pedal (Pict. A); when you release
the pedal, the display visualizes its new status (OFF) (Pict. B).

Press EXIT to leave.
Press EXIT again to go back to the main menu.

EXPRESSION PEDAL

Insert the Expression Pedal into the FOOT PEDAL socket.
Once you have entered the pedals test mode, press button 2.

Before pressing the button, the display visualizes 0 (Pict. A). If you press the pedal to all its stroke,
the display visualizes 127 (Pict. B).

Press EXIT to leave.
Press EXIT again to go back to the main menu.

P

ower Battery check

Once you have entered the rear panel test mode, press button 2.
The display visualizes a value representing the power battery charge level, expressed in % value
(i.e.: 100 = 100 %).

Press EXIT to leave.
Press EXIT again to go back to the main menu.

Midi c

heck

Once you have entered in the rear panel test mode, press button 3.
The display visualizes:

Press button 1. The display visualizes:

Connect MIDI IN and MIDI OUT A sockets by a Midi cable.
In case of correct data transmission and reception, the display visualizes the writing "go".
In case of failure, the display visualizes "A - I".

Press EXIT to leave.
Press EXIT again to go back to the main menu.

Press button 2. The display visualizes:

A B

A B

8

A-37

Sept, 2001

Note: When carring out this test, make sure you press the key properly.

In case a key does not reack 127, try pressing a few other keys.

In any case, a tolerance 08-10% is acceptable.
Press EXIT to leave.
Press EXIT again to go back to the main menu.

3) MEMORY CHECK

Once you have entered in test mode, press button 3.
The display visualizes:

The instrument carries out the DEVICE CHECK (Pict. A) automatically.

Caution: Don't turn the power off during this test. If the power goes off accidentally, carry out the test again.

At the end of all the tests, make sure the display visualizes the writing "go" (Pict. B). This means that the
instrument memory has been implemented correctly. In case the display visualizes the writing "Err", it means
that the memory is damaged.

Press EXIT to leave.

To exit, turn the power off.

Note 1: When you turn the power on again, the Factory Setup is carried out automatically.

Note 2: If you press EXIT when the display visualizes the main menu, you enter test mode again.

A B

Connect MIDI IN and MIDI OUT B sockets by a Midi cable.

In case of correct data transmission and reception, the display visualizes the writing "go".

In case of failure, the display visualizes "b - I".

Press EXIT to leave.
Press EXIT again to go back to the main menu.

2) KEYBOARD CHECK

Once you have entered test mode, press the button 2:
The display visualizes:

Press button 1, the display visualizes:

Connect one of the Midi outputs (OUT A or OUT B) to the Midi in of another musical instrument or of a dedica­ted equipment, provided of a sound source.
Press the keyboard keys. When the keys are released, the display visualizes OFF.
When you press a key, you hear a Piano sound and the display visualizes the velocity level (from 0 to 127).

Press EXIT to leave.
Press EXIT again to go back to the main menu.

AFTER

TOUCH CHECK

Once you have entered the keyboard test, press button 2.
The display visualizes:

Press the keyboard keys. When the keys are released, the display visualizes 0.
If you press the key, the display viasualizes the level of the After Touch function, according to the
pressure put on the key.

Released Key

Key pressed at max pressure

Released key

Pressed key

A

B

C

D

E

F

G

H

I

L

M

N

O

P

Q

R

S

T

U

J

K

12345678910 12131415161718192021222324252627282930

9

11

A-37

Sept, 2001

BLOCK DIAGRAM

PHOTO

CPU

RESET

X1

X2

KEYSCAN

DATA

LED
MATRIX

BUFFER

SWITCH
MATRIX

JACK BOARD

CPU BOARD

CONTROL BOARD

10MHz

IC10

XINT
A0
A1

XRD
XWR
XCS

16MHz

XIN

XOUTXOUT

RXD3

XRES

BEND-MOD

AN0-AN2

AN4

AN5AN5

P32
P33
P36

D0-D7

P00-P07

MK0-MK9

T0-T7

P10-P13

P20-P27

P50-P52

TXD3

TXD1

IN

OUT2

OUT1

THRU

SUSTAIN
SWITCH

EXPRESSION
PEDAL

INT1

P30
P31

POWER SUPPLY

DC IN 9V

POWER SWITCH

BATTERY

+

-

POWER SUPPLY BOARD

VBTY +5VD

BR0-BR9

UNIT

ENTRY

76 KEY

KEYBOARD

AN3

IC12

EEROM

IC5

AFT

WP

SCK

SDA

P56

P55

P57

BUFFERDECODER

DISPLAY

CLK

IC6

IC9

IC2
M38039FFFP

IC7

IC1

BUFFER

IC3

IC2

Q1-Q4

LATCH

3STATE

3
1

2

3
1

2

1

4

2

5

3

1

4

2

5

3

1

4

2

5

3

1

4

2

5

3

1
2
3

1 2

1 2

A

B

C

D

E

F

G

H

I

L

M

N

O

P

Q

R

S

T

U

J

K

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10

11

A-37

Sept, 2001

CPU PCB ASSY

ASSY 7772103000

View from component side

SUSTAIN
SWITCH

EXPRESSION
PEDAL

EXPJ

VRL

From CPU Board

SUST
DGND
DGND

VRH

(CN5)

VRH

VRH

JK4
HLJ_0520_01_010

3

2
1

L9
SBT0160W

1

2

4

3

JK1
HLJ_0520_01_110

3
1

2

R26
1K8

R27

470K

L7

SBT0160W

1

2

4

3

CN1

6 WIRE CABLE P2.5

3
4

2

1

5
6

JACK PCB ASSY & CIRCUIT DIAGRAM

ASSY 7697603000

View from component side

A

B

C

D

E

F

G

H

I

L

M

N

O

P

Q

R

S

T

U

J

K

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11

11

A-37

Sept, 2001

CIRCUIT DIAGRAM (CPU PCB ASSY)

IN

OUT1

OUT2

A37 KEYB

LEFT

RIGHT

HOLD

FOOTPED

THRU

TO
JACK
BOARD

FOR BUILT-IN FLASH
PROGRAMMING

FROM
POWER
SUPPLY

TEST
MODSEL0
MODSEL1

TO
AFTER
TOUCH

TO LEFT CONTROL BOARD

TO LEFT CONTROL BOARD

(CN2)

(CN3)

LLD6

LLD1
LLD2

LLD4

LLD3

LLD0

LLD5

BEND

HOLD

DBEAM
BTYCHK

KD0

KD5

KD2

KD3

KD3

KD5

KD4

INT

KD4

KD6
KD7

KD1

KD0

KD7

KD2

KD6

KD1

INT

D0

D0

D6

KD7

D6

KD6

D7

D2

D4

D3

D0

D7

D3

D1

D5

D5

KD3

D7

KD5

D6

D2

D4

D6

D1

D2

D0

D5

D5

D2

D4

D3

D1

KD0

D1

KD4

D7

D4

D3

KD1

KD2

XRD

OUT2

IN

IN

XINT

XINT

XWR

OUT2

XRD

XCS

XINT

XRD

XCS

XWR

XWR

RES

BR10

MK8

BR9

MK9

MK10

A0

A1

A0

A1

MK10

MK10

MK6

MK6

BR0

BR4

BR4

T3

T4

BR9

T6

T4

MK2

BR5

T0

BR4

MK5

MK6

MK0

T5

BR0

T4

BR1

MK1

MK7

BR10

MK6

BR3

MK3

MK9

MK3

MK0

MK2

BR1

BR0

BR4

MK1

BR4

T0

T6

T7

MK3

T0

MK4

BR2

MK2

MK2

BR0

MK10

MK8

BR3

BR0

BR7 T7

T0

T2

BR7

MK4

MK4

T1

MK9

MK1

BR6

MK3

BR6 T5

T4

T4

T3

BR2

T0

BR2

T1

MK3

BR6

MK0

BR5

MK5

MK1
BR1

MK8

T1

BR10

T7

MK7

BR3

MK7

T1

T1

BR3

BR10

MK9

MK6

T3

T2

T6

T2

T6

BR9

MK7

BR1

MK1
BR1

T5

MK0

T7

T3

MK0

MK5

MK10

BR10

BR2

BR6

MK4

BR7

T7

T2

BR3

T5

BR9

T2

MK5

BR5

BR5

BR2

BR6

MK4

MK5

BR7

BR7

MK8

T6

MK9

T5

MK7

MK2

BR5

MK8

BR9

T3

HOLD

OUT1

OUT1

RES

FSCLK

FVPP

FBUSY

FVPP

FXOE

FBUSY

FRES

FRES

A0
A1
XCS
XRD
XWR
XINT
RSVD

FSCLK
FXOE

FSDA

FSDA

BTYCHK

LLD0
LLD2
LLD4

LLD1
LLD3
LLD5
LLD7

MOD

WP

SCK
SDA

SDA

SCK

WP

SCK

SPD SPD

DIVEN

DIVEN

BEND
MOD

DATA

DATA

AFT

RSVD

LLD7

BR8

BR8

BR8

BR8

BR8

WP
SCK
SDA

SC3

SSC3

MOD

DATA

BEND

SSD0

SSD3

SSD3

SSD3

SSD1

SSD2

SSD1

SSD2

SSD0
SSD1

SSD0

SSD2

SSC2

SC2

LLD6

SSC3

SSC2 SC2

SC3

SSC1

SC1

SSC0 SSC1

SC0

SC0SSC0
SC1

XRES

XRES

XRES

XRES

SDA

DBEAM

FOOTPED

FOOTPED

AFT

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

VBTY+5VD

+5VD

+5VD

VBTY

+5VD

+5VD

+5VD

+5VD

+5VD

+5VD

REF

REF

REF

REF

REF

REF

REF

+5VD

+5VD

+5VD

+5VD

+5VD

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D D

D

D

D

D

D D

D

D

D

REF

5VREF

5VREF

5VREF

5VREF

5VREF

REF

REF

REF

VBTY

D

R45

270s

IC5

STMM24 C64_MN6

8
7

1
2
3

5

6

4

VCCWPA0

A1
A2

SDA

SCL

GND

IC10

SSC1080

7

33

20

46

24
23
22
21
19
18
17
16
15
14
13
12
11
10
9
8
6
5
4
3
2
1

31
30
29
28
27
26
25
32

49

48
47

44
43
42
41
40
39
38
37

34

36
35
45

50

51
52

VDD

VDD

VSS

VSS

SC10
PR10

SC9
PR9
SC8
PR8
SC7
PR7
SC6
PR6
SC5
PR5
SC4
PR4
SC3
PR3
SC2
PR2
SC1
PR1
SC0
PR0

T7
T6
T5
T4
T3
T2
T1
T0

CLK

A1
A0

D7
D6
D5
D4
D3
D2
D1
D0

INT

RD
WR
CS

RESET

TEST1
TEST2

R20
22Ks

X2

MA_406_10M000Hz

R21
10Ks

R40
10Ks

C48
27pFs

C58
22pFs

C59
22pFs

C28
100nFs

RA1
8x10Ks

4
5
6
7
8
9

3

2

1

C51
27pFs

SW1
NIU

R36

0s

C29
100nFs

C64
1uF16s

C15
100nFs

D1
DA204K

21

3

IC1
6N137

1
2
3
4 5

6

7

8

NC
LA
LC
NC GND

OUT

EN

VCC

C53
27pFs

C23
10uF16s

R34
0s

R22
0s

CN4

AMPC1_2716P

3
4
5
6
7
8

2

1

9

10

11

12

13

14

15

16

CN6

AMPC1_2720P

3
4
5
6
7
8

2

1

9

20
19
18
17
16
15
14
13
12
1110

R42
1Ks

C33
1uF16s

C36
27pFs

C55
27pFs

CN10
53014_0 310

3

2

1

L5
SBT0460

C12
100nFs

C66
100nFs

R3 3K3s

Q5
2SC2412K

2

1

3

C57
27pFs

C49
100nFs

R25
1Ks

IC6
TC74VHC541FT

2
3
4
5
6
7
8
9

1

19

18
17
16
15
14
13
12
11

2010

A1
A2
A3
A4
A5
A6
A7
A8

G1
G2

Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8

VCCGND

IC9
TC74HC573AF

2
3
4
5
6
7
8
9

11
1

19
18
17
16
15
14
13
12

2010

D1
D2
D3
D4
D5
D6
D7
D8

C

OC

Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8

VCCGND

C35
27pFs

C61
27pFs

R38
0s

C42
100nFs

C1
100nFs

IC8
TC7S08F

1

2

4

53

R43
0s

RA3
8x10Ks

4
5
6
7
8
9

3

2

1

RA6
8x10Ks

4
5
6
7
8
9

3

2

1

RA4
8x10Ks

4
5
6
7
8
9

3

2

1

CN7

NIU

3
4
5
6
7
8

2

1

9

20
19
18
17
16
15
14
13
12
1110

CN9

NIU

3
4
5
6
7
8

2

1

9

20
19
18
17
16
15
14
13
12
1110

R15
10Ks

R16
NIU

IC4
NIU

8
7

1
2
3

5

6

4

VCCWPA0

A1
A2

SDA

SCL

GND

Q3
DTA124EK

2

13

C8
27pFs

C32
NIU

C47
100pFs

C14

100nFs

JK1
YKF515054

2

1

3
4

5

6

JK2
YKF515054

2

1

3
4

5

6

L1
SBT0160W

1

2

4

3

TP

TP6

C17
100nFs

TP

TP5

C18
100nFs

L2
SBT0160W

1

2

4

3

C31
100nFs

C27
220nF
Poly 5%

C24
NIU

CN8

6 WIRE CABLE P2.5

3
4

2

1

5
6

L3
SBT0160W

1

2

4

3

R30

NIU

R23
10Ks

L4
SBT0160W

1

2

4

3

CN1
C_1_27_2510_6002_UN

3 4
5 6

21

7 8

9 10
C2
10uF16s

C20
1uF16s

C19
100nFs

C62
10nFs

TP

TP1

C3
47uF16s

R33
NIU

C52
27pFs

R46
100s

R26
0s

R27
0s

C65
47uF16s

C16
10uF16s

R2 220s

Q1
DTA124EK

2

13

R5 220s

R4 220s

C10
100nFs

IC12A
M5223FP

2

3

1

IC12B
M5223FP

6

5

7

R12 220s

R11 220s

C54
27pFs

R17 220s

R13 220s

RA5
8x10Ks

4
5
6
7
8
9

3

2

1

IC12C

M5223FP

84

CN2
AMPC1_2716P

3
4
5
6
7
8

2

1

9

10

11

12

13

14

15

16

C11
10uF16s

R6 0s

C56
27pFs

C37
27pFs

C6
27pFs

R7 0s

R18 NI U

R19 1Ks

C21
10nFs

R9 0s
R10 0s

C7
27pFs

C5
47uF16s

Q2
DTA124EK

2

13

R29

56Ks

C9
27pFs

R24
10Ks

C60
27pFs

C39
27pFs

X1

MA_406_16M000Hz

R32

47Ks

C25
22pFs

C26
22pFs

D2
DA204K

21

3

D3
DA204K

2 1

3

C38
27pFs

IC2

M38039FFFP

48
47
46
45
44
43
42
41

40
39
38
37
36
35
34
33

21
20
17
16
15

25

26

27

28

29

30

31

32

57

24

18

59

58

52

54
53

55

56

23

22

19

51
50
49

14
13
12

4

5

6

7

8

9

10

11

60

61

62

63

64

1

2

3

P00/AN8

P01/AN9
P02/AN10
P03/AN11
P04/AN12
P05/AN13
P06/AN14
P07/AN15

P10/INT41
P11/INT01

P12
P13
P14
P15
P16
P17

P40/INT40/XCOUT
P41/INT00/XCIN
P42/INT1
P43/INT2
P44/RXD1

P27/LED7

P26/LED6

P25/LED5

P24/LED4

P23/LED3

P22/LED2

P21/LED1

P20/LED0

VCC

VSS

CNVSS/VPP

AVSS

VREF

P34/RXD3

P32
P33

P31/DA2

P30/DA1

XOUT

XIN

XRES

P35/TXD3
P36/SCLK3
P37/XSRDY3

P45/TXD1
P46/SCLK1
P47/XSRDY1/CNTR2

P57/INT3

P56/PWM

P55/CONTR1

P54/CONTR0

P53/XSRDY2

P52/SCLK2

P51/SOUT2

P50/SIN2

P67/AN7

P66/AN6

P65/AN5

P64/AN4

P63/AN3

P62/AN2

P61/AN1

P60/AN0

C41
27pFs

Q4
DTC114EK

2

1

3

IC3
NIU

1

2

4

53

CN5

6 WIRE CABLE P2.5

3
4

2

1

5
6

C4
10nFs

IC7

M51953A

2
3

5

4

1

NC
GND

RES

CAP

VCC

R1
22Ks

R28
10Ks

C40
27pFs

C30
100uF16s

R8
22Ks

C63
100nFs

C44
27pFs

TP

TP4

C43
27pFs

C13
100nFs

TP

TP3

RA2
4x10Ks

12

4

6

8

3

5

7

C46
27pFs

R41

10Ks

CN3

AMPC1_2714P

3
4
5
6
7

2

1

8

9

10

11

12

13

14

R14
10Ks

C45
27pFs

IC11

TC7S04F

2 4

53

C22
100nFs

IC13C
TC7WU04F

6 2

IC13B
TC7WU04F

3 5

R44
1Ms

TP

TP2

IC13A

TC7WU04F

1 7

IC13D

TC7WU04F

84

C34
100nFs

C50
27pFs

A

B

C

D

E

F

G

H

I

L

M

N

O

P

Q

R

S

T

U

J

K

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12

11

A-37

Sept, 2001

POWER SUPPLY PCB ASSY & CIRCUIT DIAGRAM

ASSY 7772105000

LEFT CONTROL PCB ASSY ASSY 7772102000

View from component side

View from component side

-

DC IN 9V

+

-

BATTERY

To CPU Board

(MN1500 6 pcs)

+

(CN8)

P

P

VCCVBT

VBT

VCC

Q3
TN6717A

2

13

SW1

SSSP12114A

1 2

C15

100nFC

C14

100nFC

FL1

PLT1R53C

1

2

4

3

CN4

CONN_2X1

2
1

R24

270

C2
47uF16

C1

100uF16

D1

1N4001

1 2

D5

BZX79C5V6

1 2

C21

10uF16

CN3
6 WIRE CABLE P2.5

3
4

2

1

5
6

JK3

HEC047001630

1
2
3

C22

10uF16

A

B

C

D

E

F

G

H

I

L

M

N

O

P

Q

R

S

T

U

J

K

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13

11

A-37

Sept, 2001

FROM CPU BOARD

FROM CPU BOARD

TO RIGHT CONTROL BOARD

YEL
RED
ORG
BRW N

GRN

BLEU

TO MOD-BENDER UNIT

LOWER UPPER SPLIT CONTROL

DATA PROGRAM A/B 1

2345

876

CHANGE

LOWER

UPPER

SPLIT

CONTROL

DATA

PROGRAM
CHANGE

DISPLAY 3X7 SEGMENTS

CL0

CL1

CL2

CL3

(CN2)

(CN3)

(CN1)

ALL LEDS ARE:

EVQPAE05R

5L53SRDD_RED

ALL SWITCHES ARE:

SSD0

SSD1

SSD2

SSD3

MOD
BEND
DATA

SSD1

SSD0

LLD0
LLD2
LLD4
LLD6

LLD1
LLD3
LLD5
LLD7

RW1
RW2
RW3
RW4
RW5

RW7

RW6

LLD0
LLD1
LLD2
LLD3
LLD4
LLD5
LLD6
LLD7

DATA

MOD

RW5

RW6

RW7

RW2

DRW0

DRW0

RW1

RW3

RW0

DRW0

RW4

DRW0

RW0

SSD2
SSD3

BEND

DRW5

DRW2

DRW5

DRW1

DRW1
DRW2

DRW3

DRW4

DRW5

DRW2

DRW3

DRW3

DRW3DRW5

DRW1

DRW1

DRW4

DRW2

DRW4

DRW4

YY3

DRW7

DRW7

DRW6
DRW7

DRW6

DRW6

DRW7

DRW6

DRW6

CL3

DRW7

CL3 SSD3

SSD1
SSD0

SSD2

YY3

Y1

Y3

SC0 Y0

Y4

SC1

SC1

Y5
Y4

Y2

Y2

Y2SC2

Y3

Y5

Y3

SC3

Y0

Y1

Y0

SC2

SC0

Y1

SC3

D

REF

5VREF +5VD

D

D

+5VD

D

D

REF

5VREF

REF

5VREF

5VREF

D

D

+5VD

D16

12

D15

12

CN1
14 WIRE CABLE P1.27

3
4
5
6
7

2

1

8

9

10

11

12

13

14

D1

12

R1

220I

IC2
74HC138P

1
2
3

6
4
5

15
14
13
12
11
10
9
7

16

8

A
B
C

G1
G2A
G2B

Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7

VCC

GND

D2

12

DS1
LB603VF

7
6

4
2
1

9

10

38

5

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27
28

d2
e2

c1
d1
e1

DP2

e3

A1ac2

DP1

d3

g3

c3

DP3

b3

a3

f3

A3

A2

b2

a2

g2

f2

b1

a1

A1b

f1
g1

D5

12

D6

12

D9

12

D10

12

Q1
RN2227

3

1

2

C1
100nF

R2

220I

R4

220I

R3

220I

D3

12

D4

12

D8

12

R6

220I

R5

220I

Q4
RN2227

3

1

2

Q3
RN2227

3

1

2

Q2
RN2227

3

1

2

D11

12

D7

12

D12

12

R8

220I

R7

220I

C5
100nF

C4
100nF

CN4
53015_0 610

3

4

2
1

5

6

VR1
POT. SLIDER 100KB 10MS

13

2

SW13

SW9

SW5

SW1 SW2

SW14

SW10

SW6

CN2

3
4
5
6
7
8

2

1

9

10

11

12

13

14

15

16

SW11

SW7

SW3

SW12

SW8

SW15

SW4

C3
47uF16

C2
47uF16

R10
10K

IC3
TD62583AP

109

8

7

6

5

4

3

2

1

11

12

13

14

15

16

17

18

NCGND

I7

I6

I5

I4

I3

I2

I1

I0

O7

O6

O5

O4

O3

O2

O1

O0

R9

NIU

CN3

3
4
5
6
7

2

1

8

9

10

11

12

13

14

D13

12

D14

12

CIRCUIT DIAGRAM (LEFT CONTROL PCB ASSY)

A

B

C

D

E

F

G

H

I

L

M

N

O

P

Q

R

S

T

U

J

K

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14

11

A-37

Sept, 2001

RIGHT CONTROL PCB ASSY & CIRCUIT DIAGRAM ASSY 7772101000

View from component side

TRANSPOSE

ENTER

DOWN UP

EXIT

WRITE

START/STOP

TRANSPOSE

START/STOP

FROM LEFT CONTROL BOARD

(CN1)

SSD3

SSD2

SSD1

SSD1

SSD2

SSD3

DRW7

YY3

CL3

DRW6

SSD0

YY3

SSD0

Y5

Y5

DRW6

CL3

DRW7

Y4

Y4

D

CN1

AMPC1_2714P

3
4
5
6
7

2

1

8

9

10

11

12

13

14

D6

12

D2

12

D1

12

D4

12

D3

12

SW1

SW5

SW3

SW6

SW4

SW7

SW2

D5

12

A

B

C

D

E

F

G

H

I

L

M

N

O

P

Q

R

S

T

U

J

K

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15

11

A-37

Sept, 2001

LEFT CONTACT PCB ASSY w/RUBBER ASSY 7695005000

CIRCUIT DIAGRAM (LEFT CONT.PCB ASSY)

CIRCUIT DIAGRAM (RIGHT CONT.PCB ASSY)

RIGHT CONTACT PCB ASSY w/RUBBER

ASSY 7695004000

View from component side

View from component side