Yamaha GA 011589 service manual

Contents

Main SERVICE MANUAL GA ACOUSTIC GUITAR PRE-AMPLIFIER IMPOR TANT NOTICE WARNING : WARNING SPECIFICATIONS Page PANEL LAYOUT Page Page BLOCK DIAGRAM DM 1/2 PN A KEC-54233 A PN 1/2 PN 2/2 A' CIRCUIT BOARD LAYOUT WIRING DISASSEMBLY PROCEDURE Bottom Rear 1/2 PN 2/2PN Topcover 2/2DM 1/2DM Page LSI PIN DESCRIPTION DM: IC12 HD6413002FP16 (XQ375A00) CPU YSS910-S (XV988A00) DSP6 (Digital Signal Processor) DM: IC8 PIN NO. I/O FUNCTIONNAME PIN NO. I/O FUNCTIONNAME YM3437C-F (XM530A00) DIT2 (Digital Format Interface Transmitter) AK4520A-VF-E2 (XT802A00) DAC & ADC DM: IC17 DM: IC104 IC BLOCK DIAGRAM MB3790PF(XR967A00) 0.5 R ) 74HC374DT(XZ102A00) PN: IC301~IC307 D-FF 74HC4052DT(XZ101A00) PN: IC308, IC309 CIRCUIT BOARDS Page Page Page Page Page Page Page TEST PROGRAM 2 0. 2. 1 2 1. 2. 2 2.14 2 14. 2. 0 Page Page ERROR MESSAGES Page WARNING PARTS LIST OVERALL ASSEMBLY Page ELECTRICAL PARTS Page Page Page Page Page AG-Stomp OVERALL CIRCUIT DIAGRAM 1/3 (PN 1/2,PN 2/2) 2/2 PN 1/2PN AG-Stomp OVERALL CIRCUIT DIAGRAM 2/3 (DM) 1/2DM 2/2DM AG-Stomp OVERALL CIRCUIT DIAGRAM 3/3 (DM) 1/2DM