Important Notice; Specifications - Yamaha DX21 Service Manual

DX21
IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha
Products, are already known and understood by the users, and have therefore not been restated.
WARNING:
Failure to follow appropriate service and safety procedures when servicing this product
may result in personal injury, destruction of expensive components and failure of the
product to perform as specified. For these reasons, we advise all Yamaha product owners
that all service required should be performed by an authorized Yamaha Retailer or the
appointed service representative.
IMPORTANT:
The presentation or sale of this manual to any individual or firm does not constitute
authorization, certification, recognition of any applicable technical capabilities, or
establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The
research, engineering, and service departments of Yamaha are continually striving to improve Yamaha
products. Modifications are, therefore, inevitable and changes in specification are subject to change without
notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's
Service Division.
WARNING:
Static discharges can destroy expensive components. Discharge any static electricity your
body may have accumulated by grounding yourself to the ground buss in the unit (heavy
gauge black wires connect to this buss).
IMPORTANT:
Turn the unit OFF during disassembly and parts replacement. Recheck all_ work before
you apply power to the unit.
■ SPECIFICATIONS
Keyboard. 61 keys, Ci ~ C6
Sound Source.. FM Tone Generator: 4 operators x 2 (A,B), 8 Algorithms
Simultaneous Note Output Polyphonic: 8 notes (SINGLE), 4 notes (DUAL), 4 + 4 notes (SPLIT)
Monophonic: 1 note (SINGLE, DUAL), 1 + 1 note (SPLIT)
Internal Memory. 128 ROM voice memory
32 RAM voice memory
32 RAM performance memory
Controls. PITCH BEND WHEEL, MODULATION WHEEL, VOLUME, BALANCE, DATA
ENTRY
Display. LCD (16 characters x 2 tines)
Connecting Terminals. OUTPUT MIX/A, OUTPUT B, PHONES, CASSETTE
Control Terminals. FOOTSWITCH (SUSTAIN, PORTAMENTO), FOOT CONTROLLER (VOLUME),
MIDI (IN, OUT, THRU)
Dimensions/Weight. 909 (W) x 82 (H) x 270 (D) mm (35.8" x 3.2" x 10.6")
8 kg (17.6 lbs)
Power Requirements. U.S. & Canadian Models: 120 V, 50/60 Hz
General Models: 220 ~ 240 V, 50 Hz
Power Consumption. 7 W
Standard Accessories. Music Stand, Cassette Cable
Optional Accessories
1
FC7 Foot Controller, FC4 or FC5 Footswitch, BC1 Breath Controller, LC-21S or
SC-21 Carrying Case, LG-21 Stand, MIDI-03 or MIDI-15 MIDI Cable