Yamaha CS2x Service Manual
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Yamaha CS2x Service Manual

Yamaha CS2x Service Manual

Control synthesizer
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SY
011447
19981225-79800
CONTROL SYNTHESIZER
SERVICE MANUAL
CONTENTS
SPECIFICATIONS
PANEL LAYOUT
CIRCUIT BOARD LAYOUT
BLOCK DIAGRAM
DISASSEMBLY PROCEDURE
LSI PIN DESCRIPTION
IC BLOCK DIAGRAM
CIRCUIT BOARDS
TEST PROGRAM
MIDI DATA FORMAT
MIDI INPLEMENTATION CHART.......................................... 42
PARTS LIST
................................................... 3
.................................... 4
................. 5
............................ 6
.............................. 7
.............................. 13
................................. 15
...................................... 16
............................ 20/27
................ 34
HAMAMATSU, JAPAN
1.9K-386
Printed in Japan '99.01

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Summary of Contents for Yamaha CS2x

  • Page 1 CONTROL SYNTHESIZER SERVICE MANUAL CONTENTS SPECIFICATIONS ........... 3 PANEL LAYOUT ........4 CIRCUIT BOARD LAYOUT ....5 BLOCK DIAGRAM ......6 DISASSEMBLY PROCEDURE ......7 LSI PIN DESCRIPTION ......13 IC BLOCK DIAGRAM ......... 15 CIRCUIT BOARDS ........16 TEST PROGRAM ......

  • Page 2: Important Notice

    IMPOR TANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under- stood by the users, and have therefore not been restated.

  • Page 3: Specifications

    5.7kg (12 lbs., 9 oz.) ACCESSORIES Yamaha AC Adaptor PA-3B* Owner’s Manual, Data List Specifications and descriptions are for information purposes only. Yamaha Corp. reserves the right to change or modify products or specifications at any time without prior notice.
  • Page 4 CS2X PANEL LAYOUT Top Panel Rear Panel 4 5 6 PHONES L/MONO DC IN STANDBY FOOT FOOT FOOT INPUT TO HOST HOST SELECT THRU VOLUME CONTROLLER SWITCH OUTPUT MIDI ARPEGGIATOR PERFORM EFFECT PERFORM TYPE TEMPO LEVEL VARI VARI VARI NAME...

  • Page 5: Circuit Board Layout

    CS2X CIRCUIT BOARD LAYOUT FRONT REAR to Shield box Upper case assembly CONNECTOR ASSEMBLY REMARK PART OF LOCATION DS-KR 8P/250L : Solder DS-KR 13P/300L : Board-in DS-KR 14P/450L : Connector : Screw RIBBON CABLE 6P/110L DS-KR 12P/300L WHEEL 5P/400L WHEEL...

  • Page 6: Block Diagram

    CS2X BLOCK DIAGRAM HOST SELECT TO HOST THRU OUT IN LCDC 16MHz Trans- ceiver 60 15 MIDI back  light  LED  for  LCD H8S/2653 HC4053 IC10 switch  ×  46 SRAM MASK IC13 ×2 rotary  switch panel  LED HC245 rotary  volume  ×  8 33.8688MHz...

  • Page 7: Disassembly Procedure

    CS2X DISASSEMBLY PROCEDURE Bottom Assembly Remove the thirty-three (33) screws marked [165]. The bottom assembly can then be removed. (Fig. 1) Bottom assembly Fig.1 [165]: Bonding Tapping Screw-B 4.0X10 MFZN2BL (VJ254100) DM Circuit Board Remove the bottom assembly (See Procedure 1.) Remove the two (2) screws marked [80], and the screw marked [100A].
  • Page 8 CS2X MKR angle MKR angle Lithium battery Shield box Keyboard assembly MKF angle MKF angle MKF angle [30]: Bind Head Tapping Screw-P 3.0X8 MFZN2BL (EP630220) [40]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) [60A]: Bind Head Tapping Screw-B 3.0X20 MFZN2BL (VJ999700) Fig.2...
  • Page 9 CS2X PN1/2 & PN2/2 Circuit Boards Remove the bottom assembly. (See Procedure 1.) Remove the DM circuit board with the shield box. (See Procedure 2-2.) Pull off the ten (10) knobs. Remove the ten (10) screws marked [170A]. The PN 1/2 circuit board can then be removed. (Fig. 5) The LE 1/2 circuit board is mounted on the PN 1/2 circuit board.
  • Page 10 CS2X When you re-install the LC circuit board, you should tighten the screws marked [60B] in the oeder of a, b shown in the figure. (Fig. 5) After the LC circuit board has been removed, the reflection sheet can then be removed. After that, remove both the back-lit lens with the rubber connectors and the LCD.
  • Page 11 CS2X Hook White key Black key Rubber coutact Fig.7 Black key Black key White key DFA White key CEGB White key C’ [140]: Bind Head Tapping Screw-P 3.0X16 MFZN2BL (VB205200) Fig.8...
  • Page 12 CS2X Assembling of Keyboard Assembly Install the white keys CEGB in the lower notes, then install the DFA and C’ keys. Afterwards, install the black keys in the higher notes, and tighten the twenty-one (21) screws marked [140]. (Fig. 8) Install the rubber contacts in the assembly while pressing the keys as shown in Figure 9.

  • Page 13: Lsi Pin Description

    CS2X LSI PIN DESCRIPTION HD6432655A00F (XT443A00) CPU HD63B05V0F073P (XR951A00) CPU NAME FUNCTION NAME FUNCTION NAME FUNCTION NAME FUNCTION  Chip Select for System RAM (CS1) /RES Reset  Chip Select for System RAM (CS0)  /INT Interrupt request  ...
  • Page 14 CS2X TC203C760HF-002 (XS725A00) SWP30B (AWM Tone Generator coped with MEG) Standard Wave Processor NAME FUNCTION NAME FUNCTION NAME FUNCTION NAME FUNCTION    (Ground) (Ground) (Ground) (Ground)        HMD0 KONI2 LMD8  ...

  • Page 15: Ic Block Diagram

    CS2X IC BLOCK DIAGRAM SN74HC245NSR XD848A00 SC7SU04FEL I348A00 TC74HC14AF-TP1 XD657A00 Inverter Gate Hex inverter Octal 3-State Bus Transceiver μPC4570G2(XF291A00) TC74HC4053AF XR150A00 M5M34051F XV103A00 Triple 2-Ch MC34051MEL XP881A00 NJM4556AMT1(XQ138A00) Multiplexer/Demultiplexer Dual EIA-422/423 Transceiver Dual Operational Amplifier Swiches IN/OUT +DC Voltage +DC Voltage Supply...

  • Page 16: Circuit Boards

    CS2X CIRCUIT BOARDS ASSIGNABLE DM Circuit Board OUTPUT FOOT FOOT FOOT STANDBY MIDI HOST DC IN L/M CNO PHOUES SWITCH CONTROLLER VOLUME SELECT to HOST INPUT THRU to PN(2/2)-CN6 to PN(2/2)-CN5 to LC-CN7 to MKS2-CN5 to PN(2/2)-CN2 to WHEEL to PN(2/2)
  • Page 17 CS2X Pattern side...
  • Page 18 CS2X PN Circuit Board PN 1/2 to DM-CN7 to DM-CN5 to PN(2/2)-CN4 Component side PN 2/2 to PN(1/2)-CN3 to DM-CN2 to DM-CN1 Pattern side LED1, LED2 LE circuit board (See page 26) Switches Mark printed on the pattern side.(JK angle)
  • Page 19 CS2X An LE board is located on either of the PN1/2 and PN2/2 circuit boards. LE Circuit Board LED3~LED8 LCD back-lit Component side Mark Anode Cathode LC Circuit Board to DM-CN3 Pattern side Component side MKS Circuit Board to MK-H...

  • Page 20: Test Program

    CS2X TEST PROGRAM TEST TEST RESULTS NUMBER RAM READ/WRITE OK / NG BATTERY OK / NG ALL DOTS ON / OFF PANEL SWITCH / LED OK, ON / OFF MIDI IN / OUT / THRU OK / NG THRU (Confirmation)
  • Page 21 TEST END The [PERFORMANCE] switch will cancel the execution This test ends after displaying the result. of the test and the CS2x will go back to the status before the execution. T3. LCD TEST Check that all dots of the LCD blink ON/OFF.
  • Page 22 CS2X If the [HOST SELECT] switch has been set at the [MAC] position, set the switch at the other position and return 04 SW LED it to the [MAC] position again. Scen2 Switch the [HOST SELECT] from [Mac] to [MIDI], according to the order indicated on the LCD.
  • Page 23 OUTPUT L, OUTPUT R, and PHONES (L/R) outputs. If After pressing the [PERFORMANCE] switch, the sound necessary, verify the frequency, output waveform and will stop and the CS2x will wait for of a test number to output level of each output using a frequency counter, be entered.
  • Page 24 14 Kn1 xxx Press the [PERFORMANCE]switch to end the test. After pressing the [PERFORMANCE]switch, the sound will stop and the CS2x will wait for a test number to be (No change in display message) entered. If the [ENTER]switch is pressed, the sound will stop and TEST END the test will proceed to the next test.
  • Page 25 CS2X T23. MODULATION WHEEL TEST T25. FOOT CONTROLLER TEST 23 MW xxx 25 F.C xxx (xxx: current MODULATION wheel value) (xxx : current FOOT CONTROLLER value) According to the target value displayed on the LCD, According to the target value displayed on the LCD, slowly rotate the MODULATION wheel.
  • Page 26 CS2X T27. FACTORY SETTING ASSIGNABLE Knob 1 center ASSIGNABLE Knob 2 center EDIT PARAMETER SELECT Knob most top 27 FACTORY VOLUME Knob minimum PITCH BEND WHEEL center MODULATION WHEEL minimum This test is used to initialize the data to the factory settings.
  • Page 27 CS2X...
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  • Page 34: Midi Data Format

    0001 0000 0101 0000 |-[SW4]- CURRENT PERFORMANCE F0H 43H 0nH 63H hhH hbH 60H 0lH aaH 0001 0001 0101 0001 |------- CS2x SYSTEM F0H 43H 0nH 63H bbH bbH 50H aaH aaH 0001 0010 0101 0010 <PARAMETER CHANGE> 0001 0011...
  • Page 35 CONTROL NUMBER 0ccccccc |-[SW4]- CURRENT PERFORMANCE(CS1x)F0H 43H 0nH 4BH hhH hbH 60H 0lH aaH ddH..ddH ccH F7H CONTROL VALUE 0vvvvvvv |------- CS2x SYSTEM F0H 43H 0nH 63H bbH bbH 50H aaH aaH ddH..ddH ccH F7H <PARAMETER CHANGE> * TRANSMITTED CONTROL NUMBERS...
  • Page 36 Multi Part Data(ignored with Part 1 - 4 in Performance Mode) Drums Setup Data MSB 14H-1FH(for drum voices) are effective only when the channel is assigned to the drum voice. rrH : drum instrument note number (3-6-3-4) CS2x NATIVE PARMETER CHANGE 11110000 Exclusive status 01000011 YAMAHA ID...
  • Page 37 ByteCount 0bbbbbbb bbbbbbb ByteCount 0aaaaaaa aaaaaaa Address High The tone generator will respond to both control data received via MIDI and generated by the CS2x, 0aaaaaaa aaaaaaa Address Mid such as sustain and sostenuto. 0aaaaaaa aaaaaaa Address Low 00000000...
  • Page 38 CS2X MIDI Data Table <1-1> 4C 2 00..7F Vari. Param 6 MSB ” ” 00..7F Vari. Param 6 LSB ” ” 4E 2 00..7F Vari. Param 7 MSB ” ” Parmeter Bass Address 00..7F Vari. Param 7 LSB ” ”...
  • Page 39 Each Drum Setup Parameter can be initialized by Drum Setup Reset message. MIDI Data Table <2-1> Parameter Bass Address Parameter Change Address (H) (M) (L) Description SYSTEM CS2x System Current Performance Current Performance Common Current Performance Layer1 Current Performance Layer2 Current Performance Layer3 Current Performance Layer4 User Perf.Bank1 1...
  • Page 40 CS2X MIDI Data Table <2-2> MIDI Data Table <2-4> MIDI Parameter Change table (CS2x SYSTEM) MIDI Parameter Change table (Current Performance Layer) Address Size Data Prameter Name Description Default Address Size Data Prameter Name Description Default value(H) (H)(H)(H) value(H) 50 00 00 00...10 Performance RcvChannel...
  • Page 41 CS2X 53 1 00...7F FC Vari. Cntrl Depth -64...+63 40(+0) 54 1 00...7F Send Chorus To Reverb 0...127 Total size 15 Address Size Data Prameter Name Description Default value(H) 7# pp 60 00...7F MW Filter Control -64...+63 40(+0) 61 1 00...7F...
  • Page 42 CS2X...
  • Page 43 CONTROL SYNTHESIZER PARTS LIST CONTENTS OVERALL ASSEMBLY ..........2 KEYBOARD ASSEMBLY ........4 ELECTRICAL PARTS ........4~10 Notes : DESTINATION ABBREVIATIONS : Japanese model A : Australian model U : U.S.A. model E : European model C : Canadian model D : German model X : General export model B : British model...

  • Page 44: Overall Assembly

    CS2X OVERALL ASSEMBLY Wheel assembly Upper case assembly U160a U160b U185 U181 Keyboard assembly ; See page 3 160b 160a...
  • Page 45 CS2X PART NO. DESCRIPTION REMARKS PART NO. DESCRIPTION REMARKS REF NO. RANK REF NO. RANK OVERALL ASSEMBLY CS2X VN245400 Rotary Variable Resistor 10.0K K161100S MODULATION Overall Assembly (V286010) Connector Assembly PH5P-5F 300L+100L (VU55440) Upper Case Assembly (V299750) Cord Holder BK-1...

  • Page 46: Keyboard Assembly

    CS2X KEYBOARD ASSEMBLY ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS REF NO. RANK ELECTRICAL PARTS CS2X V 2 7 8 3 9 0 0 Circuit Board (XV331A0) VU407800 Circuit Board (XR661B0) VU617900 Circuit Board (XR661B0) VU648100 Circuit Board MK-L (XR564B0) Circuit Board...
  • Page 47 CS2X PART NO. DESCRIPTION REMARKS REF NO. RANK VH340500 Electrolytic Cap. 470.00 25.0V UB245100 Monolithic Ceramic Cap. F 0.1 25V Z  UF038100 Electrolytic Cap. (chip) 100 16V   UG038100 Electrolytic Cap. (chip) 100UF 16V UR848100 Electrolytic Cap. 100.00 25.0V...
  • Page 48 CS2X PART NO. DESCRIPTION REMARKS REF NO. RANK C131 UB052220 Monolithic Ceramic Cap. SL 220P 50V J C132 UB013680 Monolithic Ceramic Cap. B 6800P 50V K C133 UB052100 Monolithic Ceramic Cap. SL 100P 50V J C134 UB052100 Monolithic Ceramic Cap.
  • Page 49 CS2X PART NO. DESCRIPTION REMARKS REF NO. RANK IC12 X I 6 8 6 A 0 0 M62021FP RESET IC13 XD838A00 SN74HC245NSR BUFFER IC14 XT442A00 SI-8050S REGULATOR +5V IC15 XT441A00 UPC2909T-E1 REGULATOR +9V IC16 XS516A00 UPC2933T-E1 REGULATOR +3.3V IC17 XS725A00...
  • Page 50 CS2X PART NO. DESCRIPTION REMARKS REF NO. RANK RD256100 Carbon Resistor (chip) 1.0K 0.1 J RD257100 Carbon Resistor (chip) 10.0K 0.1 J RD256100 Carbon Resistor (chip) 1.0K 0.1 J RD257220 Carbon Resistor (chip) 22.0K 0.1 J RD257220 Carbon Resistor (chip) 22.0K 0.1 J...
  • Page 51 CS2X PART NO. DESCRIPTION REMARKS REF NO. RANK R106 RD257180 Carbon Resistor (chip) 18.0K 0.1 J R107 RD257200 Carbon Resistor (chip) 20.0K 0.1 J R109 RD257220 Carbon Resistor (chip) 22.0K 0.1 J R110 RD257180 Carbon Resistor (chip) 18.0K 0.1 J...
  • Page 52 CS2X PART NO. DESCRIPTION REMARKS REF NO. RANK  VD930900 Semiconductive Cera. Cap. 25V M   VM902400 Carbon Resistor 25V Z  VN002100 Ceramic Resonator CST8.00MTW140   VQ305500 Ceramic Resonator 8.00M EFOEC8004T3 VF 7 2 8 3 0 0...
  • Page 53 CS2X CIRCUIT DIAGRAM 1/2 ( DM ) CS2X MULTIPLEXER MULTIPLEXER BK2125HS601 BK2125HS601 BK2125HS601 BK2125HS601 BK2125HS601 to PN ( 1/2 ) -CN2 BK2125HS601 BK2125HS601 BK2125HS601 OPAMP to wheel C102 not install INVERTER to LC-CN7 LINE TRANCEIVER INVERTER to PN ( 2/2 ) -CN6...
  • Page 54 CS2X  CIRCUIT  DIAGRAM 2/2 (PN, LC, LE, MKS2, MK-H, MK-L) CS2X MK-L MK-H CS2X CS2X...

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