Roland A-37 Service Notes

A-37

Sept, 2001

SERVICE NOTES

Issued by RES

First edition

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

A-37

Sept, 2001

LOCATION OF CONTROLS

REAR VIEW

A-37

Sept, 2001

EXPLODED VIEW

A-37

Sept, 2001

KEYBOARD PARTS LIST

76 KEY KEYBOARD TP/9-AT Code: 7772109000

PMSM

CONTACT BOARDS ARE COMPLETE WITH RUBBER CONTACTS

Ref

6 7

8 9

PARTS NAME

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

RE MI

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

J2179101 76

6 6 6

7 6 6 6 1 1 31

7** 1

1 1

76 76

J2579112 J2579113 J2579114

J2579115 J2579116 J2579117 J2579118 J2579119 J2579121 J2579120

J2289126 2218523802

7625920000

7695005000

7695004000 J2589101 J2359104 22158789

LEFT

RIGHT

AB C

CCCD

12 P RUBBER CONTACT

** CUT AND ASSEMBLY OF RUBBER CONTACTS

SENSOR AFTER TOUCH

J3169112

A-37

Sept, 2001

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

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

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