— 3 —
Other functions
Pitch bend range:
Adjustable (12 semitones upwards and downwards)
Modulation:
Equipped
Transpose:
25 steps (–12 semitones to +12 semitones)
Tuning:
Adjustable (A4 = approximately 440Hz
±
50 cents)
Terminals
MIDI terminal:
IN, OUT
Sustain/Assignable jack:
Standard jack (sustain, sostenuto, soft, rhythm start/stop)
Line out
L(MONO)/R
Output Impedance: 3 k
Ω
Output Voltage: 1.5 V (RMS) MAX
Headphones
Stereo standard jack
Output Impedance: 200
Ω
Output Voltage: 220 mV (RMS) MAX
12 V DC
Floppy disk drive
Type:
3.5" FDD
Formats:
2DD (720KB MS-DOS format)
2HD (1.44MB MS-DOS format)
Functions:
Save and load of user tones, user rhythms, sequencer, and registration
data; playback of SMF; disk formatting; file delete; accompaniment pat-
tern style conversion
Power supply:
Dual power supply system
Batteries
Six D-size batteries
Battery life
Approximately 2 hours continuous operation on alkaline batteries
AC adapter:
AD-12
Auto power off:
Turns power off approximately six minutes after last key operation. En-
abled under battery power only, can be disabled manually.
Speaker output:
5 W + 5 W
Power consumption:
12 V
18 W
Dimensions:
122.5
×
42.3
×
16.7 cm (48 1/4
×
16 11/16
×
6 9/16 inch)
Weight (without batteries):
Approximately 9.8 kg (21.6 lbs)
Standard accessories:
Music Stand; Pattern Conversion Disk
ELECTRICAL
Current drain with 12 V DC:
No sound output
480 mA
±
20 %
Maximum volume
1765 mA
±
20 %
with 24 keys from C3 to B4 pressed in Synth-Bass 4 tone
Volume: MAX., Velocity: MAX.
DSP0: Reverb1
Phone output level (Vrms with 32
Ω
load each channel):
with tone Synth-Bass 4 tone
L-ch (Key C3)
590 mV
±
20 %
Volume: MAX., Velocity: MAX.
R-ch (Key F3)
590 mV
±
20 %
DSP0: Reverb1
Speaker output level (Vrms with 8
Ω
load each channel):
with tone Synth-Bass 4 tone
L-ch (Key C3)
7900 mV
±
20 %
Volume: MAX., Velocity: MAX.
R-ch (Key F3)
7350 mV
±
20 %
DSP0: Reverb1
Output level (Vrms with 47 k
Ω
load each channel):
with tone Synth-Bass 4 tone
L-ch (Key C3)
605 mV
±
20 %
Volume: MAX., Velocity: MAX.
R-ch (Key F3)
510 mV
±
20 %
DSP0: Reverb1
Minimum operating voltage:
6.1 V
Summary of Contents for WK-1800
Page 30: ...29 PRINTED CIRCUIT BOARD Main PCB JCM733 MA1M Top View Bottom View 1 6 5 4 3 2 9 10...
Page 31: ...30 Sub PCB JCM733 MA2M 7 8 Sub PCB JCM733 MA3M Top View Top View...
Page 32: ...31 Console PCBs JCM733 CN1M Top View Top View Console PCBs JCM733 CN2M...
Page 33: ...32 Display PCB JCM733 LCD1M Top View Bottom View...
Page 34: ...33 Keyboard PCBs JCM763T KY1M Top View Top View Keyboard PCBs JCM763T KY2M...
Page 40: ...39 SubPCB JCM733 MA2M MA3M 7 8 Regulator IC Power Amp...
Page 41: ...40 Console PCBs JCM733 CN1M CN2M S Register S Register...
Page 42: ...41 LCD Driver PCB JCM733 LCD1M LCD Driver Back Light Circuit...
