Yamaha P 85 Service Manual
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21 P-85/P-85S IC BLOCK DIAGRAM¢ICÒé¿« $£ 74V1T08CTR(X7542A00) DM: IC302, IC303 Single 2 Input AND Gate 15 2 3 4 IN A GNDVcc 1Y IN B SN74LV32APWR (X5647A00) DM: IC106 Quad 2 Input OR 1 2 31A 1Y 42A 52B 62Y 7GND1B 14 13 12Vcc 4A 114Y 103B 93A 83Y 4B SN74AHCT1G08DCKR (X0158A00) DM: IC302, IC303 Single 2-Input Positive-AND Gate 1 2 3 A B GND5 4 Vcc Y INPUTSFUNCTION TABLE OUTPUT AB Y H L L H X L H L X TC7SET08FU(X8398A00) DM: IC302, IC303 2 Input AND Gate 15 2 3 4 IN B GNDVcc OUT Y IN A NJM4580E(TE2)(X2331A00) DM: IC402 NJM4580DD(XM651A00) AM: IC102, IC103 PN1: IC701 Dual Operational Amplifier 1 2 3 4-V8 7 6 5 Output A+V Non-Inverting Input A -DC Voltage Supply+DC Voltage Supply Output B Inverting Input B Non-Inverting Input B Inverting Input A+- +-
P-85/P-85S 22 CIRCUIT BOARDS¢³”Ä, X $£ DM Circuit Board (X8827B0) .................................................................... 23 AM Circuit Board (X8828B0) .................................................................... 24 HP Circuit Board (X8828B0) ..................................................................... 24 JK Circuit Board (X8828B0) ..................................................................... 25 PN1 Circuit Board (X8828B0) ................................................................... 26 PN2 Circuit Board (X8828B0) ................................................................... 26 GHL88L Circuit Board (X6244D0) ............................................................ 28 GHL88M Circuit Board (X6245G0) ........................................................... 29 GHL88H Circuit Board (X6246D0) ........................................................... 30 Note: See parts list for details of circuit board component parts.
23 P-85/P-85S DM Circuit Board Component side ¢ æ ¼ £Pattern side ¢Í»”ï £ to JK-CN301 to GHL88M-CN2 to PN2-CN704 to AM-CN101 not installed
P-85/P-85S 24 PHONE 1 PHONE 2 to Speaker L, R DC IN 12V TO PEDAL +– A A’ AM Circuit Board Component side ¢ æ ¼ £ HP Circuit Board
25 P-85/P-85S to DM-CN501A A’ Component side ¢ æ ¼ £ IN OUT to DM-CN601 MIDI PEDAL JK Circuit Board Component side ¢ æ ¼ £
P-85/P-85S 26 REC PLAYGRAND PIANO 1GRAND PIANO 2E. PIANO 1E. PIANO 2C. ORGAN 1 C C’ B B’ STANDBY/ ON MASTER VOLUME MIN MAXDEMO/SO PN2 Circuit Board PN1 Circuit Board
27 P-85/P-85S STRINGS VIBRAPHONE E. PIANO 2C. ORGAN 1C. ORGAN 2HARPSICHORD 1HARPSICHORD 2 to DM-CN602C C’ B B’ EMAXDEMO/SONG SELECT METRONOME Component side ¢ æ ¼ £ Component side ¢ æ ¼ £
P-85/P-85S 28 DD’ DD’ to GHL88M-CN1Component side ¢ æ ¼ £ GHL88L Circuit Board 2NA-WF26230
29 P-85/P-85S E E’ E E’ to GHL88H-CN1 to DM-CN301 to GHL88L-CN1 GHL88M Circuit Board Component side ¢ æ ¼ £ 2NA-WF26240
P-85/P-85S 30 GHL88H Circuit Board FF’ FF’ to GHL88M-CN3 Component side ¢ æ ¼ £ 2NA-WF26250