Yamaha HTY-7040 Service Manual page 87

A B C
AMP 1/2
1
2
0 3.3
3.3 0
3.3 0
3.3 3.3
1.6 3.3
1.5 1.6
0.8 1.6
1.7 0.8
1.7 1.7
0 1.7
3
CB501
4
3.3
IC502
1.7
1.6
0
5
CB502
6
CB503
CB504
CB505
7
8
9
10
D E F
WOOFER L
12.1 5.0
3.3 12.1
0 0
No replacement part available.
サービス部品供給なし
6.0 3.3
3.3
3.3
5.9 10.1
0
3.3
0
0
2.9
0 5.0
IC505
6.9
5.1
5.1
5.1
0
0
3.3
0
0
5.1 4.9
5.1 5.1
5.1
5.0
5.0
5.0
3.3
0
0
0.2 D/A Converter 0.2
0 0
and 5.0
5.0
0 0
Digital AMP.
0.2 0.2
0
8 ch output 0
0.2 0.2
0 0
5.0
5.0
0 0
IC503 0.2
0.2
0
0
0.2
0.2
0 0
5.0 5.0
0 0
0.2
0.2
4.9 4.9
CENTER
0 0
SURROUND D-2
2.4
2.4
FRONT
2.4 0
0 4.8
G H I
DRIVER
WOOFER L
No replacement part available.
5.0
12.1
サービス部品供給なし
3.3 12.1
0 0
IC506
5.9 10.1
0
5.0 5.0
2.9
5.0 5.0
5.0
12.1 IC508 12.1
6.9
12.1 12.1
No replacement part available.
サービス部品供給なし
5.1
5.0
5.1 5.1
5.0 5.0
0.2 D/A Converter
0
and
5.0
0
Digital AMP.
0.2
0
8 ch output
0.2
0
5.0
0
IC507
0.2
0
0.2
0
5.0
0
0.2
4.9
CENTER
0
SURROUND
2.4
FRONT
2.4
0
J K L
DRIVER
WOOFER R
IC501: TC74LCX541FT
Low voltage octal bus buffer with 5-V tolerant inputs and outputs
OE1
No replacement part available.
サービス部品供給なし
GND
IC506, 509: YDA138-EZE-2
Digital audio power amplifier
IC509
W501
Page 90 K2
to POWER (1)_CB504
5.1 4.9
5.1 5.1
5.0 5.0
3.3
0
0
0.2
0
5.0
0
0.2
0
0.2
0
5.0
0
0.2
0
0.2
0
5.0
0
0.2
4.9
0
2.4
0
4.8
POINT D-2 XL501 (Pin 47 of IC503)
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
M N
YSP-4000/YSP-40D/HTY-7040
1 20 Vcc
A1 2 19 OE2
A2 Y1
3 18 IC502: TC7SHU04FU
A3 4 17 Y2
Inverter
A4 5 16 Y3
A5 6 15 Y4
A6 7 14 Y5 NC 1 5 VCC
A7 8 13 Y6
A Y
IN A 2
A8 9 12 Y7
L H
10 11 Y8
GND 3 4 OUT Y H L
IC505, 508: L6732TR
Adjustable step-down controller with synchronous rectification
Vcc=4.5V-14V
Vin=1.8V-14V
VCCDR
OCL OCH
8 9 16 15
LDO 12
BOOT
Monitor
11
6 Protection and Ref
SS
HGATE
OSC
10
7 PHASE V OUT
EAREF
14
1 – LGATE
0.6V +
PGOOD – +
PWM
13
E/A PGND
2
+ –
SYNCH
3
GND
4 5
FB COMP
IC503, 507: YDA141-SZ
Sound projector
Quarts Crystal circuit
Microprocessor
SO is bus connected by /CS. Microprocessor interface complies with EVE.
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
LT[9:0] OUTMC
BCK
TI/DSP AMHOP
DSI[3:0]
FSHOP[1:0]
GAINA[1:0]
GAING[1:0]
DIR MCK ENABLE[7:0]
MCK=24 576MHz
SPCHK
Fixed D4_core
/OCPO[7:0]
/SPERR[7:0]
/UVLC
/CKDET
8ch D4
SA_DSP /OTP
DAC & PDD Amp
Beam & NoiseShaper /OTW
CH_A~H
MASKUVLO
DAC-I,J
MASKCKDET
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
Chip#14 XIN
CLKC D4-SPJ
Bus connected to
microprocessor
Chip#0 XIN
CLKC D4-SPJ
87