Psr-1500/Psr-3000 Overall Circuit Diagram (Am, Hp, Sw, Vr); Parts List - Yamaha PSR-1500 Service Manual

A B C
< Page.2 >

PSR-1500/PSR-3000 OVERALL CIRCUIT DIAGRAM (AM, HP, SW, VR)

1
6
PSR-3000 only
2
MIC/LINE IN
150‰~600‰
PSR-1500: not installed
PSR-3000: to DAC1A-CN701
<Page.3 P-5>
3
1
4
VR
1
MASTER
VOLUME
5
28CC1-8831548-1
2
6
7
to DAC1A-CN601
<Page.3 P-2>
8
SW
9
STANDBY/ON
28CC1-8831548-1
2
9
DC IN 16V
10
AM
9
Power Supply
11
12
PSR-1500/PSR-3000
A B C
D E F G
MIC / LINE
MIC AMP
INPUT
VOLUME
OP AMP
OP AMP
OP AMP
2
OP AMP
3
OP AMP
Equalizer value
PSR-1500
OP AMP
OP AMP
REGULATOR +12V
DC-DC CONVERTER
D E F G
H I J
1
OP AMP
4
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
5
PSR-3000 PSR-1500 PSR-3000
OP AMP
PSR-1500 PSR-3000 OP AMP
to INV-CN502
<Page.8 E-11>
NJM7812FA (XJ608A00) S3V20 (VR313500)
REGULATOR +12V DIODE
PSR-1500: to DM 2/2-CN16 <Page.5 P-7> AM: IC92 AM: D90
PSR-3000: to DM2-E 2/2-CN13 <Page.7 B-9>
3 2
1
2
PSR-1500: to DM 2/2-CN15 <Page.5 P-6>
PSR-3000: to DM2-E 2/2-CN12 <Page.7 B-9>
1: OUTPUT
1
2: COMMON
1: ANODE
2: CATHODE
3: INPUT
H I J
K L M
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
Power AMP 0.65W 2ch
POWER AMP 7W 2ch
PSR-1500 PSR-3000
POWER AMP 17W
PSR-1500 PSR-3000
PSR-1500 PSR-3000
1SS355 TE-17 (VT332900)
DIODE
AM: D59,92
1
2
1: ANODE
: Ceramic Capacitor TO SERVICE PERSONNEL
2: CATHODE
Critical Components Information
: Mylar Capacitor
Components having special characteristics are marked
specifications equal to those originally installed.
Note: See parts list for details of circuit board component parts.
K L M
N O P Q
PSR-1500/PSR-3000
R
AUX IN
L/L+R
LINE Buffer AMP (FIX)
0dB
R
AUX OUT
(LEVEL FIXED)
L
LINE Buffer AMP (Variable)
60dB
R
OUTPUT
L/L+R
HP
PHONES
4
28CC1-8831548-1
2
L
TWEETERS
R
L
WOOFERS
R
28CC1-8831548-1
2
and must be replaced with parts having
PSR-1500/PSR-3000
N O P Q
1
2
3
4
5
6
7
8
9
10
11
12