Table Of Contents; Circuit Boards - Yamaha Portatone PSR A1000 Service Manual
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Also See for Portatone PSR A1000:
- Owner's manual (13 pages) ,
- Service manual (22 pages) ,
- Quick start manual (32 pages)
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M5227P (XF751A00)
5-Band Graphic Equalizer
AM: IC104, 105
47k
1
16
IN1
-
+
10k
2
15
NF1
540
10k
47k
3
14
IN2
-
+
4
13
NF2
540
+ -
540
47k
5
12
IN3
-
+
6
11
NF3
47k
540
47k
540
7
10
IN4
-
+
+ -
8
9
NF4
540
47k
AM (X0189D0) ··················································· 28
DM (X0128D) ················································ 18/19
ENC (X2616B0) ············································ 21/22
HP (X0189D0) ···················································· 30
INV (XW193B0) ················································· 29
MK-H (XR565B0) ··············································· 32
MK-L (XR564B0) ··············································· 31
MKS5F (X2002A0) ············································· 31
Note: See parts list for details of circuit board component parts.
µPC4570HA (XB247A00)
Dual Operational Amplifier
AM: IC100, 102, 107, 108, 111, 112
-Vcc
A
GND
1
2
+Vcc
+V
OUT
A
OUT
-IN
+IN
NF5
IN5
B
-
-
3
4
5
6
7
8
9
-IN
-V
-IN
+V
+IN
+IN
OUT
A
A
B
B
B
PB1 (X2617B0) ············································· 24/27
PN1 (X2616B0) ············································· 20/22
PN2 (X02616B0) ··········································· 20/23
PN3 (X2617B0) ············································· 24/26
PN4 (X2617B0) ············································· 24/27
SW (X0189D0) ··················································· 30
VR (X0189D0) ···················································· 28
PSR-A1000
µPC4570G2 (XF291A00)
Dual Operational Amplifier
DM: 702, 703
+DC Voltage
Output A
1
+V
8
Supply
Inverting
Output B
2
7
Input A
-
+
Inverting
Non-Inverting
3
6
+
-
Input B
Input A
Non-Inverting
-DC Voltage Supply
4
-V
5
Input B
17
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