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Musical Instrument Amplifier
Yamaha
GA 011589
BLOCK DIAGRAM
1
8
45
45
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45 pages, 4.25 Mb
AG-Stomp
8
BLOCK DIAGRAM
IC1
X2
X1
IC2
,
IC3
IC8
IC101
W101
CN301
CN101
CN301 C
N
W102
3
1
3
7
4
2
1
IC102
21
IC102
67
IC104
5
6
3
4
26
27
IC10
,
IC11
PB0~PB7
,
SW-R0~R3
IC12
DOUT
16
(
DM1/2-CN1
)
(
PN1/2-CN304
)
(
DM1/2-CN3
)
(
PN1/2-CN302
)
AN0~AN3
,
SELECT-A
,
SELECT-B
DM
PN
A
A'
PN
2/2
PN
1/2
1/2
1/2
DM
2/2
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