Yamaha HTR-5450 Service Manual page 46

A B
RX-V520/RX-V520RDS/HTR-5450/HTR-5450RDS/DSP-AX520
SCHEMATIC DIAGRAM (OPERATION)
1
4.8
~ ~
~
2
3
4
5
4.8 4.8
4.8 4.8
-50.9 -50.9
4.0
0
5.0
6
7
8
# All voltage are measured with a 10MΩ /V DC electric volt meter.
# 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.
9 E-56/J-52
C D E
FL DISPLAY
4.8 4.8 4.8 4.8 4.8
~ ~ ~ ~
~ ~ ~ ~ ~
~
~
~
FL DRIVER
~ -29.5
~
-29.2 ~
~ ~
~ ~
-29.2 ~
~ ~
~ ~
-29.2 ~
~ ~
-29.2 ~
~ ~
-29.2 -29.5
4.8
4.8
0
4.8 4.8
MAIN µ–COM
0 0
11.9 0
0 0
&4
4.8 5.2
1
4.8 0
4.8
4.8 0
2.5
2.9
4.8
4.8
0
4.8
0
0
0
MAIN L
12.0
-0.1
0
-0.1
0.1
0
0.1
-11.9
Point 1 Pin 38 of IC902
F G
2
12.7
B
5.6
5.2
0 0.6
0
0
0
12.7 A
0 12.7
4.8 5.6
12.0
7.3
6.6
5.2
0.047F/5.5
0
0.5 0 2.7
0.5
0.3
0 0
0
0
12.0
0
0
0
3.3/50
0
0
0
3.3/50
-11.9
Point 2 emitter of Q910
and collector of Q911
Q910 E
Q911 C
POWER ON POWER OFF
(Connect the power cord) (Disconnect the power cord)
H I
MAIN L
0.6 0.6
0
0
-50.6 -51.4 -1.1
-50.6
-51.1
-52.6
-51.4
-52.6
-52.0 -52.0
0.6 0.6
-51.4
-51.4
0 0
0.6 0.6
0 0
-50.6 -51.4 -1.1
-50.6
-51.1
MAIN L
0.6 0.6
33P/500
0 0
REAR L
-50.6 -51.4 -1.1
-50.6
CENTER
-51.1
0.6 0.6
33P/500
0 0
-1.1
-50.6 -51.4
-50.6
-51.1
0.6 0.6
13.3 39.1
13.8 0
0
0
-1.1
-50.6 -51.4
-50.6
-51.1
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
NJM78L05A-T3
2SA893A 2SA933S 2SB1565 2SC4488 1SS133
2SC1890A 2SD1991A HZS5B2TD
2SC2229 DTC144ES HZS5C2TD
HZS6B2TD
HZS7A2TD
HZS7B2TD Anode
HZS12C2TD
HZS202TD
HZS242TD 3: OUT
B
C 2: GND
E
E
B C
E C B
C B E Cathode
J K L
11.9
0
0
0
0
0
0
CENTER -11.8
11.9
0 0
0 3.3/50
0
0
3.3/50
0
-11.8
11.9
0 0
0 3.3/50
18K
18K
0
0
3.3/50
0
-11.8
HZS1B2
VN97600
MTZJ18C
VG44150
HZS223
VP91450
x: NOT USED
O: USED / APPLICABLE
IC902 UPD78F4218AGF-3BA
UPD78F4215A
µPC4570C NJM2068L-D LB1641 LC75725E
48 33
49 32
10
8 8
4
1
64 17
1: IN
1
1
1 16