Yamaha DSP-A595 Service Manual page 40

A B C
DSP-A595
SCHEMATIC DIAGRAM (MAIN)
1
Q Q
3 7
REGULATOR
12.8
13.4
2
0
MAIN POWERAMP
MUTE
0.6
0
0 -11.6
-41.7
0
3
MAIN
L
MUTE
0.6
4
0
0 -11.6
-41.7
0
REAR
POWER AMP
5
REAR L
MUTE
0.6
0
0 -11.6
-41.7
T E
L 1 3
0
6
MUTE
0.6
0
0 -11.6
-41.6
0
7
CENTER
CENTER
POWER AMP
MUTE
0.6
0
8
0 -11.6
-41.6
0
9
w w w
PIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC's.
1SS133 HZS242TD D5SB20 2SC1740S(R,S) 2SA893A(D,E) 2SC2229(O,Y)
10
1SS176 HZS302TD 2SA970(GR,BL) 2SC2240(GR,BL)
HSS104 2SA1015(Y) 2SC2878(A,B)
1SS270A 2SC1815(Y)
1T2 2SC1890A(D,E)
HZS12C2TD
Anode
B
C E
Cathode
E
C
B
50
D E F
6 3 1 5
MAIN POWER AMP
29.4
43.5(30.2)
1.0
43.5(30.2)
1.0 0.5 0.5
0
-0.5
0.6 0
-1.1
0.6
0
-42.5 0
-0.6
-0.6
0
-1.1
-43.5
1.1 (-30.3) 0
-43.5
-41.7
MAIN (-30.3)
L
-42.3
43.5(30.2)
1.0
43.5(30.2)
0.5
0.5
1.0
0
0.6 0
-0.5
0.6
-1.1
0
-42.5
0
-0.6
-0.6
0
-1.1
-43.5
1.1 (-30.3)
0
-43.5
-41.7
(-30.3)
REAR POWER AMP
-42.3
43.5(30.2)
1.0
43.5(30.2)
0.5
1.0 0.5
0
-0.4
-1.1
0.6
0
0
-42.5
0
-0.6
9 4 2 2 9 6 5 1 3
0
-0.6
-1.1
-43.5
(-30.3)
1.1
-43.5
-41.7
(-30.3)
-42.3
43.5(30.2)
1.0
43.5(30.2)
0.5
0.5
1.0
0
-0.4
-1.1
0.6
0
-42.5 0
0
-0.6
-0.6
-1.1 -43.5
0
(-30.3)
-1.1
CENTER
-41.6 -43.5
(-30.3)
CENTER POWER AMP
-42.3
43.5(30.2)
1.0
43.5(30.2)
0.5
0.5
1.0 0
-0.5
0.6
-1.1
0
42.5
0
0
-0.6 -0.6
0
-1.1
-43.5
-1.1
(-30.3)
-41.6
-43.5
(-30.3)
-42.3
x a o
. i
2SA1708(S,T) 2SA1492(O,P,Y) NJM7812FA
NJM79M12FA
2SA1695(O,P,Y)
2SC4488(S,T) NJM78M05FA
2SC3856(O,P,Y)
2SC4468(O,P,Y)
1.OUTPUT 1.COMMON
2.COMMON 2.INPUT
3.OUTPUT
3.INPUT
B
C
E
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G H
1 5 0
43.5
0 43.4
MAIN L
43.3
0
0
RELAY
DRIVE
43.3
0
0
20.3 0.1
0.1
0.6
0
-42.5
-29.8
43.3
-30.2
0
0
0
Q Q
REAR L
3
OUTPUT
(SURROUND)
43.3
0
RELAY
0
CENTER
DRIVE
SPEAKERS
(SURROUND)
20.4 0.1
CENTER
20.3 0.1
0.7
0.1
43.3
0
0
0
CENTER
u 1 6 3
y
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I J K
8 9 2 4
MAIN (1),(2),(5),(6)
OUTPUT
R
MAIN
L
SPEAKERS
L
A
R
L
B
R
:NOT USED
PHONES
B A
SPEAKERS
7 6 3 1 5 1 5 0 8
POWER SUPPLY
L
43.5
(30.2)
REAR
R
29.4
-43.5
(-30.3)
L
REAR
R
IMPEDANCE
SELECTOR
23.9
-23.6
-11.8 -19.5 5.0 9.5
0 0
REGULATOR
m
c o
.
Conditions
• INPUT
• VOLUME
• IMPEDANCE
SELECTOR
• PRO LOGIC → On
L M N
9 8 2 9 9
MAIN (3),(4),(7),(8)
6 C751 752 8200/56 8200/56 8200/56
(V317930) (VV95180) (VV95180)
:NOT USED
9 2 4 9 8 2 9 9
AC68.4
AC48.0
29.3
24.6
0
0
-24.2
-29.7
11.9 18.8
0
All voltages are measured with a 10M Ω /V DC electric
volt meter.
→ CD
Components having special characteristics are marked
→ minimum(–∞)
and must be replaced with parts having
→ Upper specifications equal to those originally installed.
Schematic diagram is subject to change without notice.