Ace FR-2L Quick start guide

ELECTRONIC RHYTHM INSTRUMENT
RHYTHM ACE
model FR-2L
SERVICE NOTE
ACE ELECTRONIC INDUSTRIES INC.

RHYTHM ACE FR-2L
MAIN FEATURES
Rhythm patterns (Rhythm selectors) 16
Waltz
Dixieland
Western
Rock' nRoll
Slow Rock
Bossanova
Foxtrot
Swing
Tango
Beguine
Rhumba
Samba
Mambo
Cha-Cha
Shuffle
March
Percussive Sounds 10
Bass Drum
Low Conga
High Conga
High Bongo
Cow Bell
Claves
Snare Drum
Cymbal
Maracas
Wirebrush
Cancel Button Switch 3
Cymbal
Claves
Snare Drum
Volume Control Knob with Switch 1
Tempo Control Knob 1
Start Push Button Switch 1
Transistor
2SB171B 25
2SB175B 5
2SC538 8
Diode
SM150SS 107
Power Source
HQ/ll7volts or 220-2U0volts 50/60 cycles
Dimension
600 X300 X83mm
Weight
6kg -1-

r
General Description
The Selector Switch is consisted of 16 push-button switche
All of these switches are rhythm selectors. When any rhythm
selector button is depressed .the Rhythm Ace plays the corres-
ponding rhythm. This switch also allows the musician to depres
two or more buttons simultaneously to create truly unique
rhythms. V/hen the start switch is depressed, the Rhythm Ace ii
turned on.
The Tempo Control Knob is used to control tempo of the
selected rhythm. Tempo is variable from 22 to 75measures per
minute.
The FR-2L itself is consisted of three major sections and \
power supply. The first major section is the Control Section,
which consists of the Rhythm Generator and Selection system.
The second major section is the Audio Preamplifier .(Refer fig-
ure 1.)
Hov/ to adjust semi-fixed resistors on print circuit boards
(P.C.B.)and lug terminal
Tempo Speed:
Speed is variable by adjusting VR1 and VR3.
A: Set the tempo speed control knob at 4th marking from
Slow side and adjust VR1 so that tempo light brightens 3D timg
per minute.
B: Set the same knob at 2nd marking from Fast side, and
adjust VR3 until light brightens 60 times per minutes.
Repeat same procedures until tempo speed synchronizes with
number of measures at 22 .24 .27 .30 .35 .40 .50 .60 .75 -times per
minute. (Ref: Fig. 5.6)
•Decay Time
:
If the duration of each sound is not satisfactory .the deca-\
timedength of duratiorOcan be adjusted by the following
-2-

resistors.
Bass Drum VR4
Low Conga
High Conga
High Bongo
Cow Bell
VR5
VRb
VR7
VR8 .
9
Claves VR10
When the sound of Snare Drum. Cymbal .Maracas and Wirebrush
is too loud or too small, adjust VR11.
If the sounds of Bass Drum •Low Conga, High Conga,High Bongo,
Cow Bell and Claves are louder than the same of Snare Drum.
Cymbal .Maracas and Wirebrush or vice versa, slight adjustment
is possible by VR138.(Ref. Fig. 2. 3*4)
The brightness of tempo lamp is adjustable by VR199 on the
lug terminal located near metal cover for power supply.
The manufacturer holds the right of changing such component
parts as resistors, condensers and coils for improvement with
(Ref. Fig. 2& 6)
Note:
or without previous notice.

»RHYTHH ACE FD-2L
Detailed Block Dl«.

TMPC LAMP
U£ 2

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RHYTHM ACE FR-2L
Commutator and Logic Assembry(P.CB.FR-IA)
Elements Location Dia.
Fig

SELECTION SYSTEM
SELEE1OT SWITCH LAYOUT
CUKXL
Fig a

Time
Cede 12 3412 34
LOGIC OUTPUT TIMING CHART
Figure 9shows the logic outputs according to their numerical
codingO —35) .Output logic is shown as positive pulses
occurring at the times indicated. These times are the 48 -Count
3inary counter cycle time.

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Fig ll
RHVTHM ACE FR-2L
AUDIO PREAMPLIFIER Elements Location Dia.

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Fig 12
OUTPUT TIME
REFERENCE CHART