Yamaha PSR-170 User Manual

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PSR-170
■ PSR-170 OVERALL CIRCUIT DIAGRAM
: Mylar Capacitor
: Ceramic Capacitor
: Semiconductive Ceramic Capacitor
: Metal Oxide Film Resistor
Note : See parts list for details of circuit board component parts.
DM-LCD, PN-AM, VR : 28CC1-8819402
MK-L, MK-H : 28CC1-8819596
WARNING
Components having special characteristics are marked Z and must be replaced with parts having speci-
fication equal to those originally installed.
MK-H
MK-L
DM-LCD
PN-AM
PN-AM
VR
MASTER
VOLUME
PHONES/
OUTPUT
SUSTAINMIDI IN MIDI OUT
STANDBY/ON
DC IN 12V
SPEAKER
L
SPEAKER
R
2/2
1/2
*1
*1: The fuse is soldered.
LCD
POWER AMP
REGULATOR
+5V
REGULATOR
+3.3V
GEW-12
BUFFER
BUFFER
RESET
ROM 16M
PROGRAM STYLE WAVE
MIDI DRIVER
PHOTO
COUPLER
LCD DRIVER
MM1385ENRE (XZ624A00)
REGULATOR +3.3V
CONT
GND
NOISE
VIN
VOUT
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Yamaha PSR-170 Specifications

General

Type	Portable Keyboard
Keyboard	61 keys
Effects	Reverb, Chorus
Polyphony	32 notes
ROM	100 voices
Display	LCD
Presets	100 styles
Connections	Headphones
Power Supply	AC adapter or batteries