Yamaha RX-V363 Service Manual page 80

A B C
RX-V363/HTR-6130
OPERATION 2/2
1
2
3
OPERATION (4)
4
3.3
5
3.3
0
0 3.3 3.3
0 0
7.2
0
0
9.5 8.8 8.8 9.5
IC232
CB231
6
CB232
1.7
0
IC233
18.4
5.0
7
0
W2152
CB233
W2153
8
5.3
0
W2154
0
4.5
9 0
10
# 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.
80
D E F
COMPONENT VIDEO
IC181
OPERATION (2)
3.3
0
3.3
IC238
0 1.0
0
0 0
9.5
4.5
4.2
0
1.7
0
18.4
IC236
18.4
11.9 -0.1
-0.1
0
-19.2
CB234
0
-11.9
-19.2
IC237
12.5
12.5
5.2
5.5
0
CB235
11.4
11.4
4.4
4.8
0
IC236: KIA7812API
Voltage regulator
IC232: NJM2388F33
1 INPUT
R22 R17 R23 Low dropout voltage regulator with ON/OFF control
R1 Q11 Q11-1
Q15 Vin 1
Q16
Q12
Q14 R14
R10 R15
Q17 Q19
R19 R16
R12 3 OUTPUT
Bandgap
Q18 Q6 R20
Q1 Reference
R18
R11
R9
R7 C1 ON/OFF
Z1
R2 Q10 Cont 4 control
Q2
Q7 R21
Q13 R3
Q4
Q3 Q5 Q9 Q8
R13 GND 3
R4 R5
R6 R8
2 COMMON (GND)
G H
MONITOR OUT
RDS
3.6
0
0
-4.9
0
-5.6
-11.1
-5.5
Page 82 E3 Page 83
to MAIN (5)_W161 to HDMI_CB904
9.7
1.2
CB251
1.2
9.5
3.2
7.2 1.8
0
1.0
W2251
OPERATION (3)
AC29.9
AC8.5
AC10.3
AC9.7
AC5.1
IC181: NJM2586AM
Wide band 3-input 1-output 3-circuit video amplifier
IC233, 234, 239: KIA7805API
Voltage regulator
6dB 75
CH1 IN1 1 24 CH1 OUT
Amp Driver
Bias
Cont1
SW 1 2 23 PS
Cont1
Cont2
6dB 75 R1
CH1 IN2 3 Driver 22 CH2 OUT
Amp
Bias
+
SW 2 4 21 V 2
Cont1
6dB 75
2 Vout CH1 IN3 5 Driver 20 CH3 OUT
Amp
Bias
GND 6 19 GND
R12
V 1 + -
7 18 V 2
CH3 IN1 R11
+ CH2 IN1 8 17
- Bias Bias Z1
GND 9 V - 1
16
CH2 IN2 10 15 CH3 IN2
Cont2 Cont2
Bias Bias
Over Voltage Thermal Over Current
GND 11 14 GND
Protection Protection Protection
R13
CH2 IN3 12 13 CH3 IN3
Bias Bias
I J K
VIDEO
DVR DTV/CBL DVD
-4.8
0
4.9 0
4.9 Page 82 J4
0 0
to MAIN (4)_CB193
0 4.9
W181
3.6 0
0
5.0
5.0 0
CB182
Page 77 A6
to DSP_CB504
(U, C models)
0
0.7
0
0
0 0.7
M7
OPERATION (5)
R, L models
3.7
3.7
3.7
CB258
9.6 9.6 AC 9.3
3.7 3.7
3.7
3.7 3.7
CB256
AC IN
0 0
CB257
CB252 CB254
IC183: NJM2595M (TE1)
5-input 3-output video switch
V +
SW2 SW1 SW5
16 10 14 2
Vin1 13
S5
S1
Vin2 9
6dB 75Ω
20k Amp Driver 1 Vout1
20k
Vin3 7 S2
20k
S4 S6
Vout1 1
6dB 75Ω 15 Vout2
Vin4 5 Amp Driver
SW5 2
20k S3 20k
Vin5 3
SW3 4
Vin5 3
20k Vin4
S7 5
SW4 6
6dB 75Ω 11 Vout3
Amp Driver Vin3
7
V -
20k 8
4 6 12 8
V -
SW5 SW4 GND
IC237: KIA7912PI
Voltage regulator
1 INPUT
R22
R22 R17 R23
R15 R18 R21 R23
Q11 Q11-1 Q21
Q28 Q17
Q22 Q24
Q15
Q16
R16 Q23
Q12
Q19 R24
Q14 R14 Q29
R10 R15
R20
Q17 Q19 R1
R16 Q18 Q20
R19 Q25
3
OUTPUT
Q30
R14 R17 Q31
Q18 Q6 R20 R25
Q1
R19
R18
Q12 Q13
R9
R7 C1
Q2 Q3 Q26-1
R2 Q10
R26
Q2 Q26 Q27
Q27-1
R21 Q7 D4 Q14
R3 Q7
Q13 Q15
R0
Q4 C2 C1
Q8 R9
Q8 R4 R5 R6
Q3 Q5 Q9
Q4 Q6 Q9 Q11
R4 R3
R5 R6 R8 Q5 Q10
R2
2 COMMON (GND) R7
L M N
V +
16
15 Vout2
14 SW1
13 Vin1
GND
12
11 Vout3
SW2
10
9 Vin2
IC238: LM61CIZ
Temperature sensor
1 COMMON (GND)
R13 R12
R11
R10
3 OUTPUT
Q16
R8
2 INPUT