Yamaha RX-V1800 Service Manual page 128

A B C
RX-V1800/HTR-6190/DSP-AX1800
POWER
1
2
3
4
Page 136 B4
to FL (1)_W9001
5
AC6.8
CB11
AC16.8
6
AC22.0
19.0
-0.1 0.1
AC14.4
-13.0
10.2
0.1
-0.1
-10.6
7
18.6
9.4 9.4
0
8
POWER (1)
9
# 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.
10
128
D E F
0.1
W9
5.0
0
Page 122 F9
to FUNCTION (1)_CB407
19.3
17.8
0
0
-19.6 0
IC9
18.2 18.2
18.2
17.5
18.2
18.2
18.2
4.9
0
IC10
5.1
5.1
-9.3
-8.7
-9.3
-10.4
IC7
6.0
3.6
3.6
0
0
IC11
IC4
W8B W8A
IC8
3.6
W3B W3A
0
0
W7B W7A
9.9
AC7.7 4.3 4.6
CB15
0
0
AC30.3
0
19.3
0 0
-19.6
POWER (3)
G H
19.3
19.3
19.1
0.1
19.1
5.0
19.3
0
17.8 CB21
5.0
19.1
0
Page 127 B1
to MAIN (4)_W272
19.3
17.8
19.3
0.1
19.3
0
-19.6
-19.6 5.0
0.1
0
0 -19.6
0
Page 135 L7
to D-VIDEO_CB188
W40
IC5
9.0
0
Page 130 J3
to A-VIDEO_W2001
CB23
0
0
-9.3 -4.9
IC6
2.4
6.0
Page 120 I1
3.6
to DSP_W5301
3.6
0
CB16
Page 120 K1
to DSP_W5302
CB17
1.4
CB18
0
5.1
0
4.9
Page 122 H9
4.4
to FUNCTION (1)_CB409
5.1
4.4
5.1
IC12
Page 122 D9
5.1
to FUNCTION (1)_CB406
5.6
Page 127 M9
0
to MAIN (1)_W271
CB19
19.3
5.0
Page 124 M1
19.3
6.3
0 6.3 to FUNCTION (2)_W3004
6.3
6.3 CB20
0
19.3 12.0
19.3
5.1
13.1
13.2
13.2
4.9
0
0
IC13
0
5.1 1.0
-19.6 0
-13.4
-13.3
W5A W5B IC14
-19.6 5.1 1.0
0
-19.6 -12.1
POWER (5)
I J K
POWER (2) POWER (6)
(R, L models)
CB9 CB10
CB7
To POWER TRANSFORMER
R, L models
AC IN
POWER (4)
CB1 CB2
CB5
CB4
(~)
(~)
5.4
(3.5)
~
(0)
~
4.9 (7.3)
(0)
(0.9) (3.5) (7.3)
W1
4.9
4.9 0.2 (3.6)
0 (0.9) (7.3) (0) (3.6)
5.8 0.2
(2.9)
(3.9) (0)
IC1
(0) (2.9)
0
0 (0)
(0)
0 (3.9)
(0)
0
(0) 3.6
8.7 8.7
Primary side ground
8.7
5.1
8.7
0.1
1.0 IC2 (2.9)
0.1
0
0.8
0 (0)
0
IC13, 14: LM61CIZ
Temperature sensor
L M N
IC1, 2: TLP421
Photo transistor
Anode 1
4 Collector
Cathode 2
3 Emitter
IC3: TC4013BP
Dual D-type flip flop
RESET1 4
6
SET1 1 Q1
DATA1 5
2 Q1
CL
CL
CL
CL
CLOCK1 3 CL
CL
RESET2 10 Q1 1 14 VDD
SET2 8 13
Q2 Q1 2 13 Q2
DATA2 9
CK1 3 12 Q2
12 Q2
CL CL
4 11
RESET1 CK2
CL
CL
DATA1 5 10 RESET2
11
CLOCK2 CL
CL SET1 6 9 DATA2
7
V SS
Vss 7 8 SET2
VDD 14
INPUTS OUTPUTS
RESET SET DATA CK Qn + 1 Qn + 1
L H * * H L
H L * * L H
H H * * H H
L L L L H
* : Don't care
L L H H L : Level change
L L * Qn˙ Qn˙ ˙ : No change
IC5: KIA7809API-U/P
Voltage regulator
1 INPUT
R22 R17 R23
R1 Q11 Q11-1
Q15
Q16
Q12
Q14 R14
R10 R15
Q17 Q19
R19 R16
R12 3 OUTPUT
Q18 Q6 R20
Q1
R18
R11
R9
R7 C1
Z1
R2
Q10
Q2
Q7 R21
R3
Q13
Q4
Q3 Q5 Q9 Q8
R13
R4
R5
R6 R8
2 COMMON (GND)
To POWER TRANSFORMER
U, C, T, K, A, B, G, E, J models
IC6: KIA79M05PI-U
Voltage regulator
-5V
R7
1.4K
Q8
R18
R19
Q7
4K 5K
R6
7K Q10
Q9
D1 D2
R5
6.2V 6.2V
15K R17
Q11
5.4K
Q12
Q6
Q17
Q2 V
OUT
Q16 Q18
D3
R10 Q19
3K R11 6.2V
10K R15
2K
Q1
Q13
R14 R20
R12
10pF 20K
20pF 600 15K
Q4
Q3 Q5 R4
20K Q14 Q15 Q20
Q21
R8 R9 R13 R21
R1 R2 R3 R16
20K 20K 5K 150
0.05
750 1K 6K
V IN
AC5.7
0 IC7, 8: SI-8008HFE
3.1 Voltage regulator
V
8.7 IN 1 2 SW
Overcurrent
PReg protection
ON Reset Latch & driver
/
SS
5 OFF
Oscillator
Soft
Start
– Comparator Thermal
protection
+
Error amp. – 4 ADJ
+
+
Reference
voltage
3
GND
IC9, 10, 12: BA00JC5WT-V5
Voltage regulator
Vref -
Driver
+
TSD OCP
1 2 3 4 5
CTL Vcc GND VOUT C