AG-Stomp ACOUSTIC GUITAR PRE-AMPLIFIER SERVICE MANUAL CONTENTS This document is printed on chlorine free (ECF) paper with soy ink. SPECIFICATIONS ................................................ 3/4 PANEL LAYOUT .................................... 5 BLOCK DIAGRAM ............................ 8 CIRCUIT BOARD LAYOUT ............... 10 WIRING ................................................................... 11 DISASSEMBLY PROCEDURE ............................ 12 LSI PIN DESCRIPTION ...................
AG-Stomp 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 understood by the users, and have therefore not been restated.
AG-Stomp SPECIFICATIONS Digital Section • • • • Full Digital Signal Processing Mic Simulator: 8 Types Feedback Reduction: 5-band Digital Effects • Limiter • Digital Chorus, Digital Delay • Hall Reverb, Room Reverb, Plate Reverb • External Controller Function (EXP Pedal/MIDI): 8 Controllers/ Parameters • Tuner Function (Chromatic, Auto) Connections INPUT: Standard Stereo Phone Jack OUTPUT L/MONO, R: Standard Stereo Phone Jack (TRS Bal anced) PHONES: Standard Stereo Phone Jack EXP.
AG-Stomp 4
AG-Stomp PANEL LAYOUT Top Panel Effect Section Display & Main Section Pre-Amplifier Section Foot Switch Section Display & Main Section e q r t w 1 2 3 4 5 6 UP Button DOWN Button MANUAL Button UTILITY Button STORE Button Display y 5
AG-Stomp Pre-AmpSection !2 u i o !0 !1 7 8 9 10 11 12 MIC TYPE Select Switch (MIC TYPE) BLEND Control (BLEND/STEREO) VOLUME Tone Controls OUTPUT Level Control SHIFT Button Effect Section !3 !4 13 14 15 16 17 18 19 20 21 22 23 6 !5 !6 LIMITER Button LEVEL Feedback Reduction Buttons Frequency Control (FREQ) DEPTH Control CHORUS/DELAY Effect Buttons SPEED/TIME Control DEPTH/FEEDBACK Control LEVEL Reverb Effect Buttons REVERB Volume !8 !7 !9 @0 @2 @1 @3
AG-Stomp Footswitch Section @4 @5 24 Footswitches 1, 2, 3 25 Bank Switch (AUTO F.R./BANK/TUNER) Rear Panel @6 26 27 28 29 30 31 32 33 34 35 36 @7 @8 @9 #0 #1 #2 #3 #4 #6 #5 Power Switch (STAND-BY ON/OFF) Power Adaptor Jack (AC IN 12V 1A) Guitar Power Supply Switch MIDI OUT Jack MIDI IN Jack Digital Output Jack (DIGITAL OUT) EXP.
AG-Stomp BLOCK DIAGRAM A DM 2/2 DM 1/2 1 3 7 4 2 IC101 3 PN 1/2 IC102 1 2 IC102 1 6 CN101 7 5 26 CN301 CN301 CN 6 W101 3 W102 4 27 IC104 X1 X2 IC2,IC3 IC1 IC10,IC11 IC8 DOUT 16 IC12 AN0~AN3, SELECT-A, SELECT-B (DM1/2-CN3) PB0~PB7, SW-R0~R3 (DM1/2-CN1) (PN1/2-CN304) PN 1/2 (PN1/2-CN302) PN 2/2 A' 8
AG-Stomp A PN 1/2 1 CN301 CN301 IC105 CN101 7 5 IC105 2 3 1 1 3 OUTPUT IC106 2 3 1 1 3 IC106 -1 6 7 OUTPUT IC103 2 3 1 1 3 IC103 7 6 2 3 1 LED-FOOT, SW-001 LED-REV, SW-010 LED-MOD SW-100, SW-LINE (DM1/2-CN2) RXDO, TXDO 15,17 (PN1/2-CN303) PN 2/2 IC112, IC113, IC114 KEC-54233 A' 9
AG-Stomp CIRCUIT BOARD LAYOUT DM 1/2 DM 2/2 PN 1/2 PN 2/2 10
AG-Stomp WIRING PN 1/2 CN301 CN304 CN302 CN303 CN305 (V610850) PN 2/2 CN306 CN310 CN307 CN309 CN308 (V611460) (V611450) (V611470) Note) When installing the DM circuit board, use care not to have the wire assembly caught by the bottom case.
AG-Stomp DISASSEMBLY PROCEDURE 1. Bottom Case (Manhour requirement: 5 min.) Remove the six (6) screws marked [30]. The bottom case can then be removed. (Fig. 1) Bottom [30] [30] [30]:Bind Head Tapping Screw-B 3.0x8 MFZN2BL (EP600190) Fig.1 2. 2-1. 2-2. 2-3. DM Circuit Board (Manhour requirement: 15 min.) Remove the bottom case. (See Procedure 1.) DM1/2 Circuit Board (Manhour requirement: 10 min.
AG-Stomp Topcover [T70] DM 2/2 DM 1/2 [T110B] [T70]:Washer 9.0 MFZN2Y (ET800150) [T110]:Bind Head Tapping Screw-B 3.0x8 MFZN2BL (EP600190) Fig.2 3. PN Circuit Boards (1/2, 2/2) (Manhour requirement: 20 min.) 3-1. Remove the bottom case. (See Procedure 1.) 3-2. Remove the DM1/2 and DM2/2 circuit boards. (See Procedure 2.) 3-3-1. PN 1/2 Circuit Board (Manhour requirement: 10 min.
AG-Stomp 4. 4-1. 4-2. 4-3. Heat Sink (Manhour requirement: 25 min.) Remove the bottom case. (See Procedure 1.) Remove the DM circuit board. (See Procedure 2.) Remove the two (2) screws marked [A-a] from the soldered face of the DM circuit board and the three (3) screws marked [A-b] from IC112, IC113 and IC114. The heat sink can then be removed from the DM circuit board. (Fig. 4) Heat Sink [A-a] IC114 IC113 [A-b] IC112 [A-a] Fig.
AG-Stomp LSI PIN DESCRIPTION HD6413002FP16 (XQ375A00) CPU PIN NO.
AG-Stomp YSS910-S (XV988A00) DSP6 (Digital Signal Processor) 16 PIN NO.
AG-Stomp YM3437C-F (XM530A00) DIT2 (Digital Format Interface Transmitter) PIN NO. 1 2 3 4 NAME I/O Vss MCLK DM0 DM1 I I I 5 6 7 RES WCIN DIN I I I 8 VDD PIN NO.
AG-Stomp IC BLOCK DIAGRAM MB3790PF(XR967A00) DM: IC4 ASSP R CN 0.5Ω V IN 14 V IN 13 3 CONTROL 16 N.C. 1 16 2 15 Reference Voltage Power Supply Circuit N.C. V OUT 3 14 V IN V OUT 4 13 V IN 1.24V 5 12 V SENSE ALARM1 6 11 CT ALARM1 7 10 RESET GND 8 9 RESET 6 ALARM1 7 ALARM2 9 RESET 10 RESET V IN 2.65V 500Ω V IN S V BAT2 V OUT V OUT SBD CONTROL 590kΩ V BAT1 4 100Ω 3µA Q 2.37V V SENSE 12 R V OUT 240kΩ V th:3V V OUT V th:1.
AG-Stomp 74HC374DT(XZ102A00) 74HC4052DT(XZ101A00) NJM072M(XC458A00) PN: IC301~IC307 PN: IC308, IC309 DM: IC101 D-FF Multiplexer OP AMP OUT PUT CONTROL 1 VCC 20 2 Q 1D 3 D CK OE Q 19 8Q OY CK D 18 8D 2Y 2 2Y 2X 1 2 3 16 VDD 15 2X Non-Inverting Input A –DC Voltage Supply 17 7D Y-COM 3 Y-COM 1X 14 1X Q 16 7Q 3Y 4 3Y X-COM 13 X-COM Q 15 6Q 1Y 5 1Y 0X 12 OX CK D 14 6D INH INH 3X 11 3X CK D OE 13 5D VEE 7 A 10 A Q 12 5Q VSS 8 9 B
AG-Stomp CIRCUIT BOARDS DM 2/2 Circuit Board A DM 1/2 Circuit Board INPUT MONO/TRS for POWER SUPPLY DIGITALOUT COAXIAL Component side CN101: to PN1/2-CN301 to PN1/2-C A' 20
AG-Stomp A DIGITALOUT COAXIAL POWER SUPPLY ON/OFF to PN1/2-CN302 A' CNA-V717790 to PN1/2-CN303 to PN1/2-CN304 Component side 2 21
AG-Stomp DM 1/2 Circuit Board A A' 22
AG-Stomp A DM 2/2 Circuit Board Pattern side A' Pattern side 23
AG-Stomp A PN 1/2 Circuit Board to PN2/2-CN306 to DM1/2-CN3 A' A PN 2/2 Circuit Board A' LD302, LD303, LD304 and LD306 installation Anode PN: CNA-V776560 24
AG-Stomp A to DM1/2-CN103 3 to DM1/2-CN2 A' to DM1/2-CN1 Component side A A' Component side 25
AG-Stomp A PN 1/2 Circuit Board A' A PN 2/2 Circuit Board to SW 26 to SW A'
AG-Stomp A Pattern side A' A to PN1/2-CN305 o SW A' to SW to SW Pattern side 27
AG-Stomp TEST PROGRAM A. CONNECTION OF TERMINALS • INPUT Monaural input • OUT L/MONO Balance output (RL 47KΩ) • OUT R Balance output (RL 47KΩ) • HEAD PHONES Stereo output (RL 33Ω) • EXP. PEDAL FC7 or Connect VR of B50K. JK pin 1: MIN of VR JK pin 2: MAX of VR JK pin 3: CENTER of VR • DIGITAL OUT Connect the DA converter. • MIDI IN, MIDI OUT Connect IN and OUT with the DIN 5P cable. • POWER SUPPLY OFF • AC IN Connect the AC adaptor B.
AG-Stomp 1: SW Check (1) Using the UP and DOWN switches, select “1”. (This step can be skipped if “1” is already selected.) (2) Press the STORE switch. (3) Starting with the UP switch, press each switch whose LED lights up one after another. After “MIC”, “BANK”, “3”, “2” and “1”, all LED segments should light up and then go out. • A number (0 to 20) is indicated at the right end of the 7 segment LED. • If “E” representing an error appears at the left end of the LED, press the UTILITY switch for resetting.
AG-Stomp (11) Push in the EXP. PEDAL. !4 • All LED segments light up and go out, and then the checking proceeds to MIDI check. • If VR, SW or EXP PEDAL is not set at its center position, checking will result in an error and E. 0 will appear at the left end of LED. In such case, set it to the center position and press UTILITY SW for resetting. • To advance the VR No. to be checked, press MANUAL SW. 30 3: MIDI Check (1) Using the UP and DOWN switches, select “3”.
AG-Stomp Table1 ITEM 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. F.
AG-Stomp ERROR MESSAGES If an error occurs during operation, one of the following error message numbers will appear in the display. Stop operation of the AG-Stomp and follow one of the solutions described below. E1: MIDI Receive Buffer Full CAUSE: Too much MIDI data is being received and the buffer is full SOLUTION: Try reducing the amount of data being sent, or break the data into smaller blocks. E2: Communication Error. CAUSE: An abnormality is detected during MIDI communications.
AG-Stomp YAMAHA [ Acoustic Guitar Pre Amplifier ] Date:1-May-2001 Model AG stomp MIDI Implementation Chart Version : 1.0 +----------------------------------------------------------------------+ : : Transmitted : Recognized : Remarks : : Function ...
ACOUSTIC GUITAR PRE-AMPLIFIER PARTS LIST CONTENTS OVERALL ASSEMBLY ELECTRICAL PARTS Notes : DESTINATION ABBREVIATIONS A : Australian model B : British model C : Canadian model D : German model E : European model F : French model H : North European model I : Indonesian model J : Japanese model .............................................. 2 ............................................. 4 M : South African model O : Chinese model Q : South-east Asia model T : Taiwan model U : U.S.A.
AG-Stomp OVERALL ASSEMBLY 70 T60 40 60 T50 T20 T120 T10 80 50 T110 T80 T40a T90 T40b T130 T160 T150 10 T140 T170 T70 T100 T110 T30 T110 30 100 20 2
AG-Stomp 10 20 30 40 DESCRIPTION OVERALL ASSEMBLY Overall Assembly -Top Cover Assembly -V 6 9 8 5 7 0 0 Bottom Case EP600190 Bind Head Tapping Screw-B V 3 6 9 4 1 0 0 Knob 50 60 V 5 8 5 1 8 0 0 Spacer V 5 8 5 2 3 0 0 Knob 70 80 100 T10 T20 T30 T40a T40b T50 T60 T70 T80 T90 VZ429100 VZ968600 VU859300 -V6986100 V5734500 V7177900 AAX25790 AAX25800 LX200060 VL802300 ET800150 V7407400 V5852100 Button (S) Button (L) Leg Top Cover Assembly Top Cover Meter Cover Circuit Board Circuit Board Circuit Board Hexa
AG-Stomp ELECTRICAL PARTS REF NO. * * * * PART NO.
AG-Stomp REF NO. * * * * * C133 C134 C135 C136 C137 C138 C139 C140 C141 C142 C143 C144 C145 C146 C147 C148 C149 C150 C151 C152 C153 -156 C157 C158 C159 C160 C161 C162 C163 -166 C167 -169 C170 C171 C172 C173 C174 C175 C176 C177 C178 -181 C182 C183 C184 C185 C186 C187 C188 C189 C190 C191 C192 D001 D101 -105 D106 -115 IC1 IC2 IC2 IC2 IC2 IC3 IC3 IC3 IC3 IC4 IC5 IC6 PART NO.
AG-Stomp REF NO. IC7 IC8 IC9 IC10 IC10 IC10 IC11 IC11 IC11 IC12 IC13 IC13 IC14 -16 IC17 IC101 IC102 IC103 IC104 IC105 IC106 IC107 IC108 IC109 IC110 IC111 IC112 IC113 IC114 JK1 JK2 JK3 JK101 JK102 -104 JK105 J1 -3 J104 -107 K101 L1 -6 L7 L8 L101 RA1 -18 R3 R5 R6 -10 R11 R12 R13 R14 R15 R16 R17 R19 R20 R21 -23 R24 R25 R26 R27 R28 R29 R30 PART NO.
AG-Stomp REF NO. * * * * * * * * R31 R32 R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R113 R114 R115 R116 R117 R118 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128 R129 R130 R131 R132 R133 R134 R135 R136 R137 R138 R139 R140 R141 R142 R143 R144 R145 R146 R147 R148 R149 R150 R151 R152 R153 R154 R155 -157 R158 R159 R160 R161 R162 R163 R164 R165 R166 R167 R168 R169 PART NO.
AG-Stomp REF NO. R170 R171 * R172 * R173 R174 R175 R176 R177 R178 R179 * SW101 SW102 SW103 TR1 TR2 TR101 -108 TR109 TR110 W0101 X1 X2 X101 ZD101 ZD102 ZD103 ZD104 ZD105 * * * CN301 CN302 CN303 CN304 CN305 CN306 CN307 -310 C301 -315 D301 -321 IC301 -307 IC308 IC309 K301 LD301 LD302 LD303 LD304 LD306 L301 -312 R301 -304 R305 -321 R322 -345 R346 -360 R361 PART NO.
AG-Stomp REF NO. -367 R368 R369 R370 -374 R376 SW301 -317 PART NO. RG006100 RG007100 RG007100 RG005560 RG005560 RG000000 VK701100 VK701100 DESCRIPTION Carbon Resistor(chip) Carbon Resistor(chip) Carbon Resistor(chip) Carbon Resistor(chip) Carbon Resistor(chip) Carbon Resistor(chip) Push Switch Push Switch REMARKS 1.0K 0.1 J 10K 0.1 J 10K 0.1 J 560 0.1 J 560 0.1 J 0 0.
A B C D E F G H I J K AG-Stomp OVERALL CIRCUIT DIAGRAM 1/3 (PN 1/2, PN 2/2) L AG-Stomp 1 UTILITY MANUAL DOWN UP PN 1/2 2 D-FF D-FF FB.2 FB.1 LIMITER STORE 7 Segment LED FB.3 FB.4 FB.5 CHORUS DELAY HALL ROOM PLATE 3 D-FF D-FF 4 D-FF D-FF OUTPUT SHIFT to DM-CN101 (P2.H2) 5 to DM1/2-CN1 to DM1/2-CN2 (P3.K3) (P3.K4) D-FF FREQ.
A B C D E F G H I J K AG-Stomp AG-Stomp OVERALL CIRCUIT DIAGRAM 2/3 (DM) 1 L DM 1/2 OPAMP ADC & DAC OPAMP OPAMP OPAMP (P1.I5) DM 2/2 to PN1/2-CN301 2 OPAMP 3 OPAMP OPAMP 4 OPAMP INVERTER OPAMP 5 REGULATOR SHIFT REGISTANT B.COUNTER D-FF AND INVERTER from A (P3.A4) to B (P3.
A B C D E F G H I J K L AG-Stomp AG-Stomp OVERALL CIRCUIT DIAGRAM 3/3 (DM) DM 1/2 1 PHOTO COUPLER ASSP 2 AND SRAM SRAM CPU BUFFER FLASH ROM 3 OR AND OR AND OR to PN1/2-CN304 (P1.E5) BUFFER OR OR 4 AND to PN1/2-CN303 (P1.E5) from B (P2.K6) BUFFER 5 to PN1/2-CN302 (P1.G8) to A (P2.