Roland Va-7 Service Notes
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Roland Va-7 Service Notes

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  • Page 2 Cod. K2478295 BUTTON 20x10 DARK GREY BUTTON 20x10 BUTTON 20x10 DARKGREY BUTTON 12x8 WHITE BUTTON 20x10 WHITE Cod. K2478314 Cod. K2478326 BACKGR. Cod. K2478317 ORCH. Cod. K2478330 S. COMP. Cod. K2478332 MONO Cod. K2478334 MELODIC Cod. K2478318 VIRT. B. Cod. K2478331 STEP Cod.
  • Page 4 Part No. Description Part No. Description 7770126000 VARN. + SILK. TOP CABINET 7770127000 VARN.+ SILK. BOTTOM CABINET J2409105 ZIP DRIVER IDE K2268166 VIBR. DUMPER F/VARIPH. CONTROL B. 7770109000 CONTROL VE-VP1 PCB ASSY J2359101 SPACER 3M ART. SJ5012 22208320 MUSIC SCORE HOLDER 7700417000 61-KEY KEYBOARD ASSY TP9S-AT K2128126...

  • Page 6: Power Supply

    D.BEAM PCB ASSY VARIPHRASE CONTROL PCB ASSY POWER 53014-071 0 SWITCH SWITCH INLET CN15 D.BEAM FC7 PCB ASSY PCB ASSY 53014-121 0 53014-111 0 53014-071 0 53014-031 0 53014-0410 CONTRAST 53014-081 0 53014-031 03 SWITCHING BENDER 53254-041 0 53014-041 0 CN11 53014-121 0 53014-111 0...
  • Page 13 Touch Me.
  • Page 15 Touch Me.
  • Page 16 MODULE XPGS-6 BOARD code 7770132000 MASS PRODUCTION VARIPHRASE VE-VP1 BOARD MAIN BOARD MODULE XPGS-6 BOARD code 7770111000 (no service) START PRODUCTION (OLD POSITION)
  • Page 17 TWETEER L +5V +12V -12V AMPLIFIER BOARD IC1,IC2 SPEAKER L +5V +12V -12V RELAY MIDI PEDALS VARIPHRASE TWETEER R FOOT FOOT SUSTAIN BOARD THRU PEDAL SWITCH SWITCH AUDIO OUT Q1,Q2 RELAY SPEAKER R AUDIO IN DRIVER XPGS-6 PHOTO BUFFER BUFFER MASTER AUDIO OUT VOLUME...
  • Page 19 IC1C UPC4570G R155 4K7s 4K7s +12V -12V TXD0 RXD0 CN25 TXD1 RXD1 53014-1110 EXCCL4532U1 EXCCL4532U1 -12V 256Fs OUTP1 5VREF To CN1 on DA204K SDDA2 +12V SDDA1 33uF25s 100nFs 100nFs 33uF25s BCKC XPGS-6 B. EXCCL4532U1 53014-0310 EXCCL4532U1 470s IC43A TC7W34FU C217 C216 EXCCL4532U1 EXCCL4532U1...
  • Page 20 CN16 RA28 AMPC1-2 716P 8X10Ks ELKS47 1FA 33uF25s TP16 +12V R117 R118 100nFs 68KS 12KS TP15 IC10 R133 SSC1080F 0B 18KS C166 R116 100nFs 820KS IC27A R119 RA27 UPC4570G 2K2S R132 R137 C165 R134 R136 10KS R135 100S 8X10Ks 10pFS 100S 15KS 33KS...
  • Page 21 SWAP_ ROM DATA_BUS D[0..15] ADDRESS_BUS IC20 A[1..21] TE28F16 0S570 16MBit FLASH ROM 65ns TSOP 56 pin IC19 DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 FLASH_CONTROL XDW R EXCCL453 2U1 ELKS47 1FA A-1(D15) XDWR XRST EXCCL453 2U1 XRAS XFLA SH C149...
  • Page 22 C114 IC11 IC12 DATA BUS D[0..7] SED1335F0 B HM62256ALF P-7 QFP6-60 pin 100nFs 256KBit RAM 70ns SOP 28 pin ELKS47 1FA 10MHz OSC1 VA15 VA14 OSC2 VA14 VA13 C117 VA13 VA12 100nFs VA12 VA11 VA11 VA10 VA10 C118 33uF25s IC13 M38881M 2-058FP ADDRESS BUS SubCpu QFP 64 pin...
  • Page 23 TP17 ADDRESS BUS A[0..3] DATA BUS D[0..15] TP18 RA36 8x1Ks 10Ks XREADY FDS3 RA38 4x33s 10Ks XRDATA FDS2 C120 RA37 IDE[0..15] 10Ks 100nFs XWPRT FDS1 4x33s C119 10Ks 100nFs IC16 XTRK0 FDS0 HD63266-FP-64A XFDCRST XINDEX IC31 TO FDD UNIT PC/AT IDE8 XWRL CN22...
  • Page 24 SECTION [CPU_MEM] SECTION [SOUND] A[0..21] A[0..21] A[0..21] D[0..15] D[0..15] D[0..15] XWRL XWRL XP0WAIT XP0WAIT XP1WAIT XP1WAIT XP0INT XP0INT XP1INT XP1INT XPINI XPINI SETWD SETWD LSPMUTE LSPMUTE 256FS 256FS SDDA1 SDDA1 SDDA2 SDDA2 OUTP1 OUTP1 BCKC BCKC...
  • Page 25 C100 C101 1/16 10/16 A[0..21] A[0..21] ELKS471FA D[0..15] D[0..15] ELKS471FA Tone Prm. System 16M-MaskROM 8M-Flash (44P-TSOP2) (48P-TSOP) Normal Bent EXBV8V@JV L1 BK2125HM102 C201 HD6437016E12F IC3 LH28F800SGE-L70@ L2 BK2125HM102 To CN25 on MAIN B. DQ15 */O15 L3 BK2125HM102 L4 BK2125HM102 DQ14 DQ13 BCKC BCKC...
  • Page 26 C105 1/16 1/16 1/16 1/16 A[0..21] A[0..21] D[0..15] D[0..15] WA[1..23] IC18 IC17 TC203C180AF(XP6) TC203C180AF(XP6) WD[0..15] WCS[0..4] IC19 IC20 WA23 WA23 WD15 WA23 WD15 WD10 WA23 CA13 WA23 O15/A-1 O15/A-1 WA23 CA13 WA22 WA22 WD14 WA22 WD14 WD12 EXBV8V@JV WA22 CA12 WA22 WA22 CA12...
  • Page 27 From CN27 on MAIN BOARD +12V 53014 -1310 XSLC 2SC1815GR DISPON TO graphic L CD 2SC1815GR B7B-PH-K- S 53014 -0310 52043 -0410 TOUCH3 TOUCH2 -12V RANGE +19.5V - +24.9 V TOUCH0 OPTIMAL VALUE AROUND +20.7V TOUCHY TOUCH1 TOUCHX 47uF3 5 To Touch Screen 00621 6012100808 From CN23 on MAIN BOARD...
  • Page 29 CA[0..23] MD0:H SH3 Vari Address Map Bus Width D 3. 3 MD1:L =Clock MODE1 MD2:L AREA0 : FLASH MEMORY 8Mbit 16bit CD[0..31] A[0..13] MD3:L =AREA 0 16bit AREA1 : Internal I/O 3.3V 3.3V MD4:H AREA2 : --- MD5:L =BIG ENDIAN AREA3 : SDRAM 64Mbit 32bit CA18...
  • Page 30 L1=L2=L3=L4=L5=L6=BLO3RN2-R62T2 5045_06A YKB21_5006 MUTE_S MUTE_R 100nFC PHONE_L PHONE_R AGND AGND 100nFC FROM POW.AMP.B. 100nFC R1 100I R2 100I YKB21_5006 100nFC R4 100I R5 100I...
  • Page 31 R104 DA204K 100s R103 R123 100Ks 2SK363GR ADC INPUT NORMAL LEVEL: -15.3dBm FIXING (-37dBm in JACK with max volume) C169 0.1 AN78L05M TA7805F SW1A 33pFs R105 SSSF112 DAD+5V DA+5V ADC INPUT MAXIMUM LEVEL: +2.7dBm 100pFs -VCC R118 CN13 SSSF11209K 3.9Ks 53014_0310 (-7.8dBm in JACK with max volume) R106...
  • Page 32 D105 orange DBEAM ON/OFF 53014-0410 SW24 DBEAM To CN11 on CONTROL B. ON/OFF...
  • Page 33 To CN1 on MAIN B. 100nF CN15 53014-1210 53014-1210 SCD7 SCD7 SCD0 0.6W SCD6 SCD6 SCD0 SCD1 0.6W 0.6W 0.6W 0.6W SCD5 SCD1 SCD2 0.6W 0.6W SCD5 SCD4 SCD4 SCD2 LSSC0 SCD3 SCD3 SCD3 SCD3 SCD4 0.6W 0.6W SCD2 SCD4 SCD5 0.6W 0.6W...
  • Page 34 ELKTR391CA ELKTR391CA YKF51-5001 53014-0310 ELKTR391CA ELKTR391CA RK09D111 ELKTR391CA ELKTR391CA SBT0460 From CN4 on LCD CONTROL B. ELKTR391CA FC-7 53014-0810 From CN10 on CONTROL B.
  • Page 35 53014-1210 SCD0 SCD1 SCD2 SCD3 SCD4 SCD5 SCD6 SCD7 LSSC3 LSSC4 LSSC5 LSSC8 GROUP To CN15 on TONE DATA TEMPO DBEAM USER PROGRAM LSSC3 ON/OFF CONTROL B. SW25 SW26 SW27 SW28 SW29 SW30 SW31 SW32 VARIPH1 VARIPH2 VARIPH3 VARIPH4 VARIPH5 VARIPH6 VARIPH7 VARIPH8...
  • Page 36 REAL PARAMETER CUT Gain = -4.24dB f = 3.4KHz Q = 1.56 IC1A IC2A UPC4570C 56nF 2.7nF 27nF 100K 1.5K 22pF IC3A 07JQ-ST UPC4570C 1uF/5 0 5.6K +12V -12V LSEND AGND RSEND IC1B IC2B LRET UPC4570C RRET 56nF 2.7nF 0.1C 27nF 100K 1.5K...
  • Page 37 From SWITCHING -VCC POWER SUPPLY (Cn2) From SWITCHING -12V 1N4148 POWER SUPPLY AGND From AUDIO BOARD (Cn2) MUTE BC560B +17V DGND MUTE DGND AGND +12V LOUT 100uF25 AGND BC549B 4700uF25 ROUT 5045-07A 100uF25 0=MUTE ON 4700uF25 10uF16 5045-04A 1/4W 1=MUTE OFF 5045-06A -12V AGND...
  • Page 38 1N4148 6N137 L10=L11=L12=SBT0160W YKF51_5046 1N4148 R34 220 5045-08A BC549B 0.1C R35 220 LSSC13 LSSC13 SCD7 SCD7 0.1C 5045-09A SCD6 SCD6 SBT0160 W IC5A IC5B HLJ0520_01_110 -VCC -VCC 74LS05 74LS0 5 IPCTXD1 VLCD VLCD 1N4148 M_OUTA IPCRXD1 SUSTAIN SWITCH EXPJ EXPJ IPCTXD2 GNDREF GNDREF...
  • Page 39 0.1C PULSE: FREQUENCY:6.84KHz DUTY:12.5% PULSE WIDTH:18.3uS 1uF25 10uF16 D215 TPS708 D216 TLN201 2SC1815GR PULSE IC10A 150pF UPC4570HA 2SC2235Y IC10B 10nF 100K UPC4570HA -12V CN15 -12V 10uF16 53014-0710 10uF16 0.1C 0.1C BEAM BEAM From CN21 on MAIN B. RIBB REF5V 5597-08APB 53014-0410 100K To CN3 on POTENTIOM.

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