Yamaha YSP-3000 Service Manual page 83

A B C
AMP
1
2
0 3.3
3.3 0
3.3 3.3
3.3 3.3
1.5 3.3
1.3 1.5
0.8 1.5
0.8
1.7
1.7 1.7
0 1.7
3
CB501
3.3
IC502
0
4 0
0
CB502
5
CB503
CB504
CB505
6
CB506
CB507
7
CB508
8
9
10
D E F
WOOFER L
0.1 5.0
3.3 0.1
0 0
IC504
IC506
IC504
No replacement part available.
No replacement part available.
3.3
3.3
5.0
0
3.3
0
0 5.0
2.9 5.0
0
IC505
5.0 12.1
6.9
12.1
4.4
5.1
0
3.3
0
0
5.1 4.9
5.1 5.1
5.1 5.1
5.0 5.0
5.0 5.0
3.3
0
0
D/A Converter
0.7 0.2
0 0
and
5.0 5.0
0
0
Digital AMP.
0.2 0.2
0 0
7 ch output
0.2 0.2
0 0
5.0 5.0
0
0
0.2 IC503 0.2
0 0
0.2
0 0
5.0 5.0
0 0
0.2
4.9 4.9
0 B-3 0
2.4
2.4
2.4
0
0 4.8
CENTER
FRONT SURROUND
POINT B-3 XL501 (Pin 48 of IC503)
G H I
DRIVER
WOOFER L
0.1 5.0
0.1
3.3
0
0
IC509
No replacement part available.
5.0
0 5.0
2.9 5.0
IC508
5.0 12.1
6.9 12.1
5.1 4.9
5.1
5.0 5.1 5.1
5.1
5.0 5.0 5.0
3.3
0
0
D/A Converter
0.2 0.2
0 0
and
5.0 5.0
0 0
Digital AMP.
0.2 0.2
0 0
7 ch output
0.2 0.2
0 0
5.0 5.0
0 0
IC507
0.2 0.2
0 0
0.2
0 0
5.0 5.0
0 0
0.2
4.9 4.9
0 0
2.4
2.4
2.4 0
0 4.8
IC501: TC74LCX541FT
Low voltage octal bus buffer with 5-V tolerant inputs and outputs
OE1 1 20 Vcc
A1 2 19 OE2
A2 3 18 Y1
A3 4 17 Y2
A4 Y3
5 16
A5 6 15 Y4
A6 7 14 Y5
8 13
A7 Y6
A8 9 12 Y7
GND 10 11 Y8
J K
DRIVER
WOOFER R
No replacement part available.
No replacement part available.
5.0
0 5.0
5.0
2.9
IC510
5.0 12.1
6.9 12.1
5.1 4.9
5.1
5.1
5.1
5.0 5.0
5.0
3.3
0
0
D/A Converter
0.2 0.2
0 0
and
5.0 5.0
0 0
Digital AMP.
0.2 0.2
0 0
7 ch output
0.2 0.2
0 0
5.0 5.0
0
0
0.2 IC511 0.2
0 0
0.2
0 0
5.0 5.0
0 0
0.2
4.9 4.9
0 0
2.4
2.4
2.4
0
0 4.8
IC502: TC7SHU04FU
Inverter
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
NC 1 5 VCC
A Y
IN A 2 # Schematic diagram is subject to change without notice.
L H
GND 3 4 OUT Y H L
L M N
YSP-3000/YSP-30D/HTY-7030
Page 85 L3
to POWER (1)_CB504
CB511
IC506, 509: YDA138-EZE-2
Digital audio power amplifier
5.1
IC505, 508, 510: L6732TR
5.0 Adjustable step-down controller with synchronous rectification
Vcc=4.5V-14V
Vin=1.8V-14V
OCL OCH VCCDR
8 9 16 15
12
LDO
BOOT
Monitor
11
6 Protection and Ref
SS
HGATE
OSC
10
7 PHASE V
OUT
EAREF
14
LGATE
1 0.6V + –
PGOOD – +
PWM
13
E/A PGND
2
SYNCH + –
3
GND
4 5
COMP
FB
IC503, 507, 511: YDA141-SZ
Sound projector
Quarts Crystal circuit
Microprocessor
Microprocessor interface complies with EVE.
SO is bus connected by /CS.
IRQ terminals are connected in
daisy chain, forming an OR circuit.
Speaker A~H
Chip#15 XIN XOUT
WCK fs=32/44 /48k*2 DAT[15:0] OUTPC
WCK WCK2
OUTMC
BCK LT[9:0]
TI/DSP
AMHOP
DSI[3:0]
FSHOP[1:0]
GAINA[1:0]
GAING[1:0]
ENABLE[7:0]
DIR MCK=24 576MHz MCK
SPCHK D4_core
Fixed
/OCPO[7:0]
/SPERR[7:0]
/UVLC
/CKDET
8ch D4
/OTP
SA_DSP
DAC & PDD Amp
/OTW
Beam & NoiseShaper
CH_A~H
MASKUVLO
MASKCKDET DAC-I,J
MASKOTP
MASKOTW
MASKOCP
TESTOTP
TESTOCP
DACENABLE[1:0]
PWMSW
/TEST
/TRIDET
DEGLITCH
EXT[0:1]
CLKC
CLKC
For DAC monitor
To be modified if there are many SDC latches
XIN
Chip#14
CLKC D4-SPJ
Bus connected to
microprocessor
Chip#0 XIN
CLKC D4-SPJ
with parts having specifications equal to those originally installed.
83