Yamaha BBT500H Service Manual page 55

A B C
BBT500H OVERALL CIRCUIT DIAGRAM 1/2 ( DM1/2, DM2/2, PN )
1
DM1/2
2
SYSTEM RESET
SRAM 256K
FLASH ROM 4M
3
4
DSP
5
6
7
OP AMP
DM2/2
INPUT
INPUT LEVEL
8
OP AMP
DIC-00007-4
9
to PW-CN103
10
DIC-00007-2
DIC-00007-3
11
12
BBT500H
A B C
D E F G
PHOTO COUPLER
CPU
TRANSCEIVER
TRANSCEIVER
to PW
-CN107
to PW
-CN106
DRAM 4M
MULTIPLEXER
A/D
OP AMP
D/A
OP AMP
NAND
OP AMP
LEVEL
INVERTER
REGULATOR +5V
REGULATOR +3.3V
*Solder side IC123 Back side
NJM78M05DL1A(TE1)
(XS534A00)
REGULATOR +5V
IC120
1
3
D E F G
H I J
BBT500H BLOCK DIAGRAM
MIDI
DM2/2
CN302
IC301
(4P)
3
1
JK301
SW1 PW
CN105
(3P)
TRANSCEIVER
CN101
(3P)
LINE SOURCE SP SIM
OUTPUT LIMITER
PN
TUNER OUT
RETURN
LEVEL
SEND
PHONES
OP AMP
UNBALANCED
OUT
OP AMP
LINE OUT
BALANCED OUT
OP AMP
UPC29M33T-E1(XU965A00)
REGULATOR +3.3V
DIC-00008-2
IC121
2
2
1
3
1: INPUT 1: INPUT
2: GND 2: COMMON
3: OUTPUT 3: OUTPUT
H I J
K L M
JK105
SW105
JK102 JK104
JK103
DM1/2
CN106
(4P)
1
IC112 IC114
2 OP AMP 3
2
4 25 1 22,23 1 IC117
6
IC112
7 6
IC123(28P) IC113
2 5 24 7 3
3
5 7
6 OP AMP
20,21
1 OP AMP
5 IC117
IC114 7
5
IC113
IC122(28P)
15
IC104
X101
(176P)
IC120,121
IC119
(16P)
4M
66
IC105(40P)
IC107(20P)
IC107(20P)
CN102(7P)
CN107(6P)
CN103 CN106(7P)
(6P)
JK101
JK102
IC107,Q120 Q131
(64P)
CN104(2P)
FAN
FLAT
TUBE
SOLID
R&B
VINTAGE
MODERN
CLASSIC
HEAVY
DRIVE
DIST
FUZZ
K L M
N O P Q
BBT500H
JK106 JK107
SW101 SW103 SW102
JK101
IC115
5 7 3 1
IC118
7
6
IC118
IC110
(20P)
IC103(5P)
IC101(48P) IC102(28P) X102
IC107
(20P)
IC106(100P)
IC108(16P)
CN105
CN103(12P) (10P)
CN104(11P)
CN402 IC401
(10P) (24P)
CN401(11P)
CN403(12P)
PN TA401
(18P)
DIC-00019-2
DRIVER
: Ceramic Capacitor (セラミックコンデンサー)
酸金 : Metal Oxide Film Resistor (酸化金属被膜抵抗)
BBT500H
N O P Q
1
2
3
4
5
6
7
8
9
10
11
12