Roland Va-3 Service Notes Download

Page: 29 / 30

A
B
C

VA-3

Jan, 2001

CIRCUIT DIAGRAM (POWER & AMP. PCB ASSY)

12V/2A

RIGHT

LEFT

LEFT +

LEFT -

RIGHT +

RIGHT -

FROM JACK BOARD

(CN2)

TO JACK BOARD

(CN3)

TO SPEAKERS

TO PHONES BOARD

With Heatsink

ACJ

DCIN

TO-220 with Heatsink

SEND_R
RETURN_R
PHONES_R
PHONES_L
RETURN_L
SEND_L
AGND

(CN1)

RETURN_R

RETURN_L

LEFT -

RIGHT -

+5V
DGND
DGND

AGND

RIGHT
LEFT

TO POWER SWITCH

INVERTER

+12V

5V
5V
DGND
DGND
AGND

VPD

VPWR

100nF

PLT1_R53C

EMI_FILTER

100nFC

JK1

HEC_2305_01_230

1
2
3

470nF

C8
47uF25

C10
220uF25

R3
10K

C11
10uF25

10K

BY251

C12

3300uF25

C13

4700uF25

C14

2200uF25

1N4002

10uF16

CN3

5045_09A

3
4
5
6
7
8

CN1

5045_04A

2
1

100nFC

C17

100uF16

150
1W

150

R4
10K

R5
10K

C18

100uF16

R20

2K2

R21
2K2

CN4

53014_0710

3
4

5
6
7

IC2

TDA7370

4
5

12
11

I1
I2

I3
I4

S-B

VCC

OUT1

OUT2

OUT3

OUT4

PW-G

S-G

C-D

470nF

8K2

R1
2_2

3W Metal Oxide

10I 0.6W

CN6

5045_04A

CN7

5045_04A

3
4

CN2

5045_05A

2
1

CN5

5045_03A

R11

2_2

3W Metal Oxide

IC1
LM1085IT-5.0

GND

TO FDD

8K2

View from component side

POWER SWITCH PCB ASSY & CIRCUIT DIAGRAM

ASSY 7770701000

PUSH SWITCH SDKLA1-B

SW1

2
3
4

CN1

5045-04A

Summary of Contents for Va-3

Page 1: ...keys synthesizer action velocity sensitive Controllers Tempo Data dial D Beam Controller Bender Modulation Lever Master Volume knob Tone generation PCM 64 voice polyphonic GM2 GS compatible 32 multiti...

Page 2: ...MELODY INTELL MELODY INTELL ONE TOUCH ONE TOUCH DOWN UP PIANO TRANSPOSE VOLUME MIN MAX EFFECTS OTHER ARRANGER V ARRANGER KEYBOARD 64 VOICE POLYPHONY D BEAM CONTROLLER D BEAM CONTROLLER V A 3 ON OFF V...

Page 3: ...7 VA 5 18 02126390 TOUCH SCREEN SENSOR EMU601A2MA16 19 20 K2248158 LEFT TEMPLATE F SPEAKER 21 22 23 24 22165134 BRASS BUSHING 25 7626921001 J2409102 61 KEY KEYBOARD TP 7BA 2ND FLOPPY D DRIVER JU 257 A...

Page 4: ...NATURAL KEY B4 NATURAL KEY C8 SHARP KEY SCREW 2 9x10 TCTCPR TROP 12P RUBBER CONTACT 13P RUBBER CONTACT LEFT CONTACT PCB ASSY RUBBER C CH RIGHT CONTACT PCB ASSY RUBBER C CH KEYBOARD SUPPORT 61 KEYS RUB...

Page 5: ...0 CONTROL PCB ASSY LCD CONTROL PCB ASSY XPGS 4 PCB ASSY JACK PCB ASSY POWER AMP PCB ASSY POWER SWITCH PCB ASSY PHONES PCB ASSY KEYBOARD ASSY 61 KEY MAIN PCB ASSY D BEAM PCB ASSY 12 17 5 8 7 14 3 2 1 1...

Page 6: ...172RI DIODE BY 251 D2 on PAB 1 J5019105 DIODE 1N 4002 D1 on PAB 1 RESISTOR J3919104 RESISTOR ARRAY EXB A10E 103 J RA1 2 6 7 8 9 10 15 27 28 29 30 on MB 12 J3919107 RESISTOR ARRAY EXB V8V 101 JV RA12 1...

Page 7: ...5 13369689RI 20P FEM CONNECTOR AMP 1 27 CN6 on JB CN1 9 15 24 on MB 5 J3429122 14P FEM CONNECTOR AMP 1 27 CN4 on MB CN1 on CB 2 13379151 14P FEMALE CONN 1 25 R CN9 on LCD 1 J3429125 FEMALE CONNECTOR 5...

Page 8: ...alizes You can check the instrument software version pressing the BANK NUMBER 1 button After a few seconds the display shows To exit from this screen display turn the instrument off VA 3 Virtual Arran...

Page 9: ...UE NUMBER2 EXIT SYSTEM MENU BANK1 SYSTEM VERSION BANK2 SYSTEM LOAD BANK3 SYSTEM SAVE First group of test BANK NUMBER 1 SWITCH test Press the BANK NUMBER1 button the display shows Every time you press...

Page 10: ...ANK 4 normal Test Press BANK 6 image Test Press BANK5 to exit 7 TOUCH SCREEN Test Note to carry out this test a normal pen is required Press the BANK NUMBER 7 button the display shows Pressing BANK NU...

Page 11: ...button the display shows How to connect the cables to test the MIDI sockets IN OUT Connection Midi IN connection In MIDI test mode connect the MIDI cables as shown above Make sure that the writing OK...

Page 12: ...king the amplifiers output level The sounds coming from the right and left mono channels to the OUT output are mixed and can be adjusted by the Volume potentiometer The sine wave sounds coming from th...

Page 13: ...ears You have to carry out the calibration again In case of failure you have to carry out the calibration again HOW TO INIZIALIZE THE FLASH AREA Turn the instrument on while keeping the MELODY INTELL...

Page 14: ...1 4 VGA ALPHA DIAL D 0 1 X2 IC19 AN0 1 2 D 0 15 A 0 21 LS 0 3 D 0 7 VA INVERTER LED A 1 12 ROM 16Mbit TOUCH SCREEN LOGIC DRAM CKOUT KEY IC3 IC47 RX1 IC12 TX2 XCS2 XCS D IC1 IC2 OUT BUFF D216 D215 Q16...

Page 15: ...17 18 19 20 21 22 23 24 25 26 27 28 29 30 15 11 VA 3 Jan 2001 RIGHT CONTACT PCB ASSY w RUBBER ASSY 7624504001 CIRCUIT DIAGRAM RIGHT CONT PCB ASSY CIRCUIT DIAGRAM LEFT CONT PCB ASSY LEFT CONTACT PCB AS...

Page 16: ...F G H I L M N O P Q R S T U J K 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 16 11 VA 3 Jan 2001 MAIN PCB ASSY ASSY 7770710001 E View from component side View from so...

Page 17: ...L37 BK2125HM102 L38 BK2125HM102 R94 0s R95 0s R34 NIU R35 NIU R36 NIU C1 33uF25s R31 10Ks R32 10Ks R33 10Ks R7 47s R56 100s RA32 4X10Ks 4 5 6 7 8 3 2 1 TP TP11 TP RA17 4X47s 1 8 2 7 3 6 4 5 R4 10Ks R...

Page 18: ...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 FL4 ELKS471FA 2 1 3 A 0 1 D 0 7 XRD XWRL XKEY XRST XKEYINT 10MHz To RIGHT CONTACT B CLK FREQUENCY 54 7...

Page 19: ...DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 BYTE RP CE0 CE1 WE OE VPP VCC VCC VCC WP GND GND GND 3 5 NC NC NC RY BY IC21 HM5118160CJ 6 16MBit DRAM 60ns SOJ 42 pin 17 18 19 20 23 24 25 26 27 28 14 30 13 1 42 29 16...

Page 20: ...pFs C132 NIU C130 NIU C122 100nFs C133 NIU C127 100nFs C119 100nFs IC14 TC7S32F 1 2 4 5 3 IC23A TC7W14F 1 7 IC23D TC7W14F 8 4 IC23C TC7W14F 6 2 IC23B TC7W14F 3 5 R71 10Ks IC15 TC7S08F 1 2 4 5 3 C121 1...

Page 21: ...7 18 19 20 21 22 23 24 25 26 27 28 29 30 21 11 VA 3 Jan 2001 MODULE XPGS 4 PCB ASSY ASSY 7770711000 N No ot te e Replacement should be made on a unit basis No replacements available for individual par...

Page 22: ...22 20 18 16 30 28 26 24 21 19 17 15 33 12 14 44 23 13 32 NC A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 O15 O14 O13 O12 O11 O10 O9 O8 O7 O6 O5 O4 O3 O2 O1 O0 W B CE OE NC VCC...

Page 23: ...1 Y0 C62 100nFs C52 C53 C50 C49 IC13 K3NC1000C 44 43 2 3 34 35 36 37 38 39 40 41 42 4 5 6 7 8 9 10 11 31 33 12 14 29 27 25 22 20 18 16 30 28 26 24 21 19 17 15 1 23 13 32 A20 A19 A18 A17 A16 A15 A14 A1...

Page 24: ...DISP_ON XD0 DISP_ON XSCL TOUCH2 TOUCH1 XD3 LP XD1 5VC 12V 12V 12V 5VC 5VC 5VC 12V 5VC C5 NIU IC1 NJM2360M FLAT 1 2 3 4 5 6 7 8 CS ES CT GND INV V SI CD D1 SFPB 56 1 2 TP TP1 L1 RCH 875 151K R1 220mOH...

Page 25: ...4A 3 4 2 1 R88 NIU R91 12Ks R64 12Ks R90 12Ks C51 NIU IC10B NJM5532MD 6 5 7 R81 12Ks R77 12Ks R75 12Ks C83 NIU R89 10 1 2W C74 10uF16 IC10A NJM5532MD 2 3 1 C80 100uF16 C85 100uF16 R73 0s R66 NIU C67 1...

Page 26: ...ent side PULSE DUTY 12 5 FREQUENCY 6 84KHz PULSE WIDTH 18 3uS PULSE BEAM BEAM 12V 12V 12V 5V 5V 12V 12V D215 TPS708 1 2 CN15 53014 0710 3 4 2 1 5 6 7 R70 10K C46 150pF R71 100 R72 1 8 R73 1 8 R74 100...

Page 27: ...VREF 5VREF REF REF REF REF D D D C4 100nF C9 100nF D3 1 2 SW3 D4 1 2 SW4 D5 1 2 SW5 D6 1 2 SW6 D7 1 2 SW7 D8 1 2 SW8 D10 1 2 SW10 D11 1 2 SW11 D12 1 2 SW12 D13 1 2 SW13 D14 1 2 SW14 D15 1 2 SW17 D34 1...

Page 28: ...OWER AMP PCB ASSY ASSY 7770702000 View from component side View from component side INVERTER PCB ASSY CIRCUIT DIAGRAM ASSY 7770709000 To LCD From Power Amp B CN7 CFL POWER SUPPLY CFL GND 5V 5V GND GND...

Page 29: ...4 3 C4 100nFC C5 100nFC JK1 HEC_2305_01_230 1 2 3 C7 470nF C8 47uF25 C10 220uF25 R3 10K C11 10uF25 R6 10K D2 BY251 1 2 C12 3300uF25 C13 4700uF25 C14 2200uF25 D1 1N4002 1 2 C3 10uF16 CN3 5045_09A 3 4...

Page 30: ...21_5006 8 7 3 2 4 5 1 R1 33I R2 33I R3 33I R4 33I L3 L1 L2 L4 L5 CN1 53014_0710 3 4 2 1 5 6 7 C1 100nFC L6 C2 100nFC View from component side SWITCH D BEAM PCB ASSY CIRCUIT DIAGRAM ASSY 7770705000 DBE...

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