Yamaha HTY-7040 Service Manual page 85

A B C
INPUT 1/2
1
Page 89 D7
to HDMI_CB2
2
6.2
6.2
6.2
6.2
6.2
6.8 6.8
11.7 11.7
3
6.2
6.2
6.2
6.2
ANALOG IN
6.8 6.8
11.7 11.7
IC9 5.9
SUBWOOFER 5.9
0
0.7
0
Selector
4
IC4
5.0
1.7
1.1
6.7 1.7
6.0
1.2
0
9.0 11.8
9.0 11.8
0
IC7
5
4.6 4.6
0 3.3
4.5 4.7
3.3 9.0
4.5
4.6
4.5 0 0
9.0 0
4.6 4.6
0
0
4.5 4.5
0 0
4.5 4.5
IC37
0 4.6
6
11.8
4.5
3.9
2.4
1.7
0
IC1
4.3 0
5.0
7
0
IC1
4.3
IC1 4.9
2.5 2.0 4.5
0
IC1
SYSTEM
4.3 0
CONTROL
JK1
J model
5.0
0
U, C, J models
4.3 2.5 IC1 3.3 IC1 0.4
U, C, T, K, A, B,
DIGITAL IN
G, E, L, V models
8
J model
IC8
RS-232C
(Writing port)
CB1
9
POINT B-1 XL1 (Pin 6 of IC14) POINT B-2 XL2 (Pin 12 of IC22) POINT B-3 XL4 (Pin 20 of IC30)
10
D E F
Page 89 K8 To TUNER
to HDMI_CB6 (U, C, T, K, A, G, E, L, V models)
11.8 10.9
0
0
0
6.2
6.2
0
6.2 0
6.2 0
5.8 11.7
5.8 5.8
5.8 11.7
6.3
5.8
6.3
5.8
5.8 0
5.8
6.2
5.1
6.2
5.1
B-2
IC22 11.8
2.9
2.2
11.8
5.9
IC9
5.9
0 5.9 3.3
0.1
0
3.3
4.9
IC13 IC18 IC21
0
0 5.0
4.9
1.9 0.3 0 IC18
5.0
5.0 4.9
0
2.0 5.0
IC18
2.0 5.0
0
5.0
IC18
4.9
4.9 0.5
0
5.1 11.8 5.0 11.8
IC17
5.1 11.8 5.0 11.8 3.3
IC24
0 0 0
3.3
IC11
0
5.0
1.1
5.0 5.0
4.9 3.3 3.3 4.5
1.7 0
0
IC14 2.6 3.3
4.9
2.6
5.0
0 4.9 4.9 3.3 4.5
0 0
0 5.0 4.9 3.3
5.0
0
B-1
5.0
1.7
IC35
C-1
0
JK2 0
3.3
0
3.3 3.3
IC15
0
3.3 3.3
0
0 0
0
3.3 3.3
0
POINT C-1 XL5 (Pin 9 of IC35)
G H
XM DOCK No replacement part available.
(iPod)
U, C models サービス部品供給なし
U, C, A, B models
CB5
CB4
XM
IC36
IC36
5.0 IC29
5.0
0
3.3 3.3
3.3
2.4
3.3 3.3
0 3.3
2.4
3.3 3.3
3.3
3.3
0
0 B-3 0
3.3 3.3
3.3 3.3
0.2 2.5 3.3
3.3
3.3 2.4
3.3 2.5
3.3 MICROPROCESSOR 2.0
0 3.0
3.3 3.3
3.3 0
0 0
0
0
3.3 0
3.0 0
3.3 3.3
3.3 0
0 3.3
3.3 0
3.3
3.3
0 3.3
0 0
IC30
0 0
3.3 0
3.3 0
3.3 0
3.3 3.3
0
3.3
3.3 0
3.3 0
3.3 0
0 0
3.3 0
IC31
IC4: LA7956
IC1: TC74VHCU04FT
Video switch
Hex inverter
6dB
AMP
VCC
1A 1 14
VIDEO SWITCH
1Y 2 13 6A DRIVER CONTROL
4 INPUT 1 OUTPUT
3 12 6Y
2A
2Y 4 11 5A 1 2 3 4 5 6 7 8 9
VIDEO A B VIN1 GND VIN2 VCC VIN3 VIN4
3A 5 10 5Y OUT
3Y 6 9 4A
A Y
GND 7 8 4Y L H
H L
IC7: KIA78L09F-RTF/P
Three terminal positive voltage regulator
IC15: TC74VHC125FT
High speed CMOS quad bus buffer 3 INPUT
Q14
Q3
Q5
1G 1 14 Vcc Q1
Q12
1A 2 13 4G
Q13
1Y 3 12 4A
inputs outputs Q4 Q6 Q11
C1
2G 4 11 4Y Z1
G A Y Q16
Q10
2A 5 10 3G
H X Z 1 OUTPUT
Q9
2Y 6 9 3A L L L
Q2 Q7 Q8
GND 7 8 3Y L H H
Z2
2 COMMON
I J K
IC14: MB90050PF-G-119-E1
OSD controller
CB6 Page 91 I4
SIN
Serial input
Each block
to POWER (5)_W951 SCLK control
CS
(B model)
VIN
CB7 YIN
CIN
HSYNCI
Page 91 B2
VSYNCI
Sync control
to POWER (4)_CB801
FLDI
SYNCST
HSYNCO
VSYNCO
CB8 NTSC/PAL
signal
CSYNCO
generator
FLDO Palette
circuit
(4 bits→6 bits)
VBLKO
Page 91 I7
BUSY Display Memory control
to POWER (2)_CB902
VRAM
Font ROM
(35 characters
× 16 lines) (512 characters)
EXS
4FSC clock
oscillation Each block
XS
circuit
FSC4O
CB9
EXD
Dot clock
XD oscillation Each block
circuit
DCLKO
RESET
FLDI 1
Page 84 F2 VSYNCI 2
HSYNCI 3
to DSP_CB5
V CC 4
V 5
SS
EXS 6
XS 7
FSC4O 8
VSYNCO 9
HSYNCO 10
CSYNCO 11
VBLKO 12
CB10
3.3
2.0
2.0
0
IC8: MAX3232CPWR
3-V to 5.5-V multichannel RS-232 line driver/receiver
C1+ 1
V+ 2
C1- 3
CB11
4
C2+
C2- 5
V- 6
7
DOUT2
8
RIN2
IC13: BA7046F-E2
Sync. separator with AFC
Hosc-R 1 H.OSC
CB12
HD- 2
OUT
Sync-
OUT 3
IC9, 36: NJM2068MD-TE2
VD- OUT 4 V.SEPA
Dual operational amplifier
OUT +V
1 1 8 CC IC18: TC74VHC00FT
Quad 2-input NAND gate
–IN 1 2 7 OUT 2
+ – + –
+IN 3 6 -IN
1 2
–V CC 4 5 +IN 2 1A 1
1B 2
1Y 3
2A 4
IC21: PQ1CZ41H2Z
2B 5
Chopper regulators
2Y 6
V V
IN OUT GND 7
1 2
Voltage ON/OFF
regulator circuit
ON/OFF control
PWM COMP.
5
Q
Overcurrent
R
F/F
detection
circuit S
ERROR AMP. O
adj
4
V
ref
Overheat
detection
circuit
3
COM
L M N
YSP-4000/YSP-40D/HTY-7040
IC14: MB90050PF-G-118-E1
OSD controller
SIN
Serial input
Each block
SCLK control
CS
VIN VOUT
VOUT Analog
Analog
YIN switch YOUT
switch YOUT
CIN COUT
COUT
HSYNCI
VSYNCI
Sync control
Video signal
Video signal
FLDI generator circuit
generator circuit
SYNCST
HSYNCO
DCOL5 to DCOL0
DCOL5 to DCOL0
VSYNCO Output control
Output control NTSC/PAL
DB
DB signal
CSYNCO
generator DH
DH
FLDO Palette
circuit
(4 bits→6 bits)
VBLKO
BUSY Display Memory control
VRAM
Font RAM
Font RAM Font ROM
(35 characters
(8 characters)
(8 characters) × 16 lines) (512 characters)
PO3
PO3 EXS
4FSC clock
XS oscillation Each block Port control PO2
Port control PO2
circuit
PO1
PO1 FSC4O
PO0
PO0
EXD
Dot clock
XD oscillation Each block
circuit
DCLKO
All reset
All reset RESET
36 PO3 FLDI 1 36 PO3
35 PO2 VSYNCI 2 35 PO2
34 DCOL5 HSYNCI 3 34 DCOL5
V 4 33 DCOL4
33 DCOL4 CC
32 DCOL3 V SS 5 32 DCOL3
MB90050 MB90050
31 DCOL2 EXS 6 31 DCOL2
30 DCOL1 XS 7 30 DCOL1
29 DCOL0 FSC4O 8 29 DCOL0
28 DCLKO VSYNCO 9 28 DCLKO
27 DB HSYNCO 10 27 DB
26 DH CSYNCO 11 26 DH
25 RESET VBLKO 12 25 RESET
IC11, 17: KIA78M05F
Three terminal positive voltage regulator
1 INPUT
D2
Q8 Q9
Q12 Q15
D3 R15 Q16
R14
Q14
R19
3 OUTPUT
D1 Q6
Q10
QD
Q11
C1
Q4
Q13
Q2
Q1
0
IC12: BD3843FS-E2
6-channel function switch
24 23 22 21 20 19 18 17 16 15 14 13
LOGIC
16 V
CC
15 GND
14 DOUT1
13
RIN1
1 2 3 4 5 6 7 8 9 10 11 12
12 ROUT1
11 DIN1
10
DIN2
9
ROUT2
IC6: NJM2585M
Wide band 3-input 1-output 3-circuit video amplifier
75
6dB
CH1 IN1 1 24 CH1 OUT
Amp Driver
Bias
Cont1
23 PS
SW 1 2
PHASE 8 PD- OUT
COMP Cont1
Cont2
6dB 75
CH1 IN2 3 22 CH2 OUT
Driver
7 V Amp
CC
Bias
+
SW 2 4 21 V 2
SYNC
6 V IN Cont1
SEPA
6dB 75
20 CH3 OUT
CH1 IN3 5 Driver
Amp
5 GND
Bias
GND 6 19 GND
+
V 1 7 18 GND
CH3 IN1
CH2 IN1 8 17
Bias Bias
GND 9 GND
16
14 Vcc
13 4B CH2 IN2 10 15 CH3 IN2
Cont2 Cont2
12 4A Bias Bias
GND 11 14 GND
11 4Y
A B Y
10 3B
L L H
CH2 IN3 12 CH3 IN3
13
L H H
9 3A
Bias Bias
H L H
8 3Y
H H L
# 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.
85