Yamaha ACD1 Service Manual page 114

Amplifier control device
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V
U
T
S
1
CPU CIRCUIT DIAGRAM (ACD1) 001
2
3
4
5
6
7
8
9
10
11
12
REGULATOR
13
14
for EMC measurement
(EMC対策用用)
WARNING
Components having special characteristics are marked
replaced with parts having specification equal to those originally installed.
15
安全上の注意
印の部品は、安全を維持するために重要な部品です。
交換する場合は、安全のため必ず指定の部品をご使用ください。
16
4
28CC1-2001031028-1
R
Q
P
O
N
TRANSCEIVER
for CPU 66.3552 MHz
CPU
*
PIN NO.
NAME
121
PTM[4]/PINT[4]/AFE_RDET/USB1d_TXDMNS
122
RESERVED/USB1d_SUSPEND
123
USB1_ovr_crnt/USBF_VBUS
124
USB2_ovr_crnt
125
RTS2/USB1d_TXENL
126
PTE[2]/USB1_pwr_en
127
PTE[1]/USB2_pwr_en
*
for CPU
for SDRAM
bypass capacitors
bypass capacitors
(CPU用パスコン)
(SDRAM用パスコン)
and must be
(未実装)
: Not installed
: Ceramic Capacitor
M
L
K
J
I
SDRAM 128M
SDRAM
128M
: Temperature characteristics
: Resistance tolerance
(セラミックコンデンサー)
(抵抗許容誤差)
H
G
F
E
D
Lithium Battery(リチウム電池)
Battery VN103500
Battery
VN10360R or WR846000 (Battery holder for VN103500)
Notice for back-up battery removal. Push the battery
as shown in figure, then the battery will pop up.
Druk de batterij naar beneden zoals aangeven in de
tekening, de batterij springt dan naar voren.
Battery holder
For power supply when backup is not performed
OP AMP
(非バックアップ時電源供給用)
SYSTEM RESET
CR2032
Socket
Battery
Backup power switching circuit
Detection voltage: 2.7 V
(バックアップ電源切り替え回路
 検出電圧 2.7V)
SRAM 2M
INVERTER GATE
FLASH ROM 128M
FLASH ROM 128M
(温度特性)
CPU CIRCUIT DIAGRAM (ACD1) 001
C
B
A
ACD1
PQ070XZ01ZPH (X3180A0R)
REGULATOR
CPU: IC001
1
1: DC INPUT (Vin)
2
3
2: ON/OFF cont.(Vc)
4
5
3: DC OUTPUT (Vo)
4: VC(V
ADJ
)
5: GND
RB500V-40 (V2376600)
DIODE
CPU: D001
1
2
1: ANODE
2: CATHODE
DTC143XKA (V303350R)
DIGTAL TRANSISTOR
CPU: TR001
3
1
2
R
OUT
1
IN
R
2
1: GND
GND
2: IN
IN
OUT
3: OUT
GND

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