CIRCUIT DIAGRAM (MAIN)

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XP-30 Mar. 1999KEYBOARD <strong>CIRCUIT</strong> <strong>DIAGRAM</strong>KEYBOARD DISASSEMBLY1. ATTACHING THE PCBs1. AFTAFTS.M.7P.M.7S.M.6P.M.6S.M.5P.M.5S.M.4P.M.4T7T6T5T4T3T2T1T0T7T6T5T4T3T2T1T0S.M.3P.M.3S.M.2P.M.2S.M.1P.M.1S.M.0P.M.011M SM PM SM P AFTC2G#2E3C4G#4E5C6G#6C729P HI32P LOWRequired Parts/PARTS No, PARTS NAME Qty.708907677089077801015134010151452220559722205598400122561) First, turn the chassis over on the other side, being careful not toreverse the right and left ends.Next, as shown in fig. 1, place SPACER 12P (4 pieces) on thechassis from the left end (the bass side of keyboard), aligningthem with the posisioning holes provided on the chassis.(Refer to fig. 2.)In the same way, place SPACER 13P on the right side of thechassis (the treble side).Bass SidePositioning Holes of ChassisSPACER 12P x4SK-8A61 PWB HI-AFT ASSYSK-8A61 PWB LOW ASSYSK-8A RUBBER SWITCH 12PSK-8A RUBBER SWITCH 13PSK-8 PCB SPACER 12PSK-8 PCB SPACER 13PBINDING TAPTIGHT B 3x10mm ZCfig.1fig.2114141241) fig. 1SPACER 12P4fig. 2SPACER 13PTreable SideSPACER 13PPositioning Hole of ChassisPositioning Holes of Chassis18
XP-30 Mar. 19992) Next, aligning the positioning bosses of RUBBER SWITCH2) SPACERRUBBER SWITCH4) Then, tighten the LOW and HI PCBs with the Tap Tight4) TAP TITE SCREWSPCB LOWHIwith the circular holes of SPACER, and as done for the spacer,SPACERRUBBERScrews. First tighten the near-center Screws 1, then the endplace four RUBBER SWITCH 12PL, and one RUBBERSWITCH 12P4RUBBER SWITCH 13PScrews 2 on the other side. (This order must be followd.1SWITCH 13P in order, starting on the lower tone side.Ohterwise the PCBs may not be flush with the Spacers.)2In this procedure, make sure that RUBBER SWITCH andRUBBER SWITCHSPACERThen tighten the remaining Screws 3 of the LOW and HI PCBs.PCBSPACERSPACER are positioned with their cutout parts and ascape(For the above, refer to Fig. 7.)grooves aligned, respectively.fig. 3 fig. 4Finally, tighten the Screws in the area adjacent to the LOW andPCBLOWHI3(Refer to fig. 3 and fig. 4.)HI PCBs.fig. 7Cutout PartSince the PCBs may have been warped by soldering, etc., it isrecommended to gently hole down the center and tighten thePCBLOWHIScrews.fig.3231PCB Adjacent AreaAir-Escape GrooveRUBBER SWITCHPosisioning Boss(6 points)PCB SPACERfig.7 (ex. 32P LOW)2. REMOVAL AND REINSTALLATION OF THE KEYS2. fig.4ChassisBefore removing the keys, first take the stopper off the rear side ofthe chassis, then take away the spring.3) Next, using the cutout part of PCB and the projecting part ofSPACER as positioning guide, place PCB so that thepositioning pin of SPACER fits into the positioning hole ofPCB. (Refer to fig. 5)As fig. 6 shows, PCBs consist of three boards, "LOW" and3) PCBSPACERSPACER PCBPCBfig. 5PCBfig. 6LOWHI2When reinstalling the keys, carefully apply the stopper as shown infig. 8.Bring the stopper into closs contact with the ends of the white keyshafts and press the stopper in the area of the double-coated tape tosecure it. (Refer fig. 8.)fig. 8fig. 8"HI".Double-CoatedAdhesive TapePositioning Pin of SPACERStopperPCB Cutout Partfig.5Projecting Part of SPACERfig.8Viewed from the rear side of the chassis.SharpKey AxisNormal Key Axis32P LOW29P HIBass Sidefig.6Treble Side32P LOW29P HISTOPPER 12P x4fig.9STOPPER 13P19
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