NIHON HAMMOND Hammond B-300 User manual
SERVI
CE
MAN
UAL
HAMM
OND
B-300
COMBO
ORGAN
8550K
H
000-006148-00J
CAUTION!
see
safety
notice
inside
NIHON
HAMMOND
EIM1TED
HEAD
OFFICE/2-30.
2-chome.
Shinkitajima,
Suminoe-ku,
Osaka,
Japan.
&FACTORY
•559
(For
Service
Assistance
Contact)
PHONE/(06)-685-3905
SAFETY
NOTICE
Great
care
has
been
taken
in
the
design
and
manufacture
of
this
product
to
assure
that
no
shock
hazard
exists
on
any
exposed
metal
parts.
Internal
service
operations
can
expose
the
technician
to
hazardous
line
voltages
and
accidentally
cause
these
voltages
to
appear
on
exposed
metal
parts
during
repair
or
reassembly
of
product
components.
To
prevent
this,
work
on
these
products
should
only
be
performed
by
those
who
are
throughly
familiar
with
the
precautions
necessary
when
working
on
this
type
of
equipment.
To
protect
the
user,
it
is
required
that
all
enclosure
parts
and
safety
interlocks
be
restored
to
their
original
condition
and
the
following
tests
be
performed
before
returning
the
product
to
the
owner
after
any
service
operation.
Plug
the
AC
line
cord
directly
into
a
line
voltage
AC
receptacle
(do
not
use
an
isolation
transformer
for
this
test)
and
turn
the
product
on.
Connect
the
network
(as
shown
below)
in
series
with
all
exposed
metal
parts
and
a
known
earth
ground
such
as
a
water
pipe
or
conduit.
Use
an
AC
VOM
of
5,000
ohms
per
volt
or
higher
sensitivity
to
measure
the
voltage
drop
across
the
network.
More
the
network
connection
to
each
exposed
metal
part
(metal
chassis,
screw
heads,
knobs
and
control
shafts,
escutcheon,
etc.)
and
measure
the
voltage
drop
across
the
network.
Reverse
the
line
plug
and
repeat
the
measurements.
Any
reading
of
4
volts
RMS
or
more
is
excessive
and
indicates
a
potential
shock
hazard
which
must
be
corrected
before
returning
the
product
to
the
user.
VOM
0
0
AC
SCALE
1OK
2W
TO
EXPOSED
METAL
PARTS
SECTION
II!
DIAGRAMS
&
TEST
(INDEX)
FIGURE
3-1
3-2
3-3
3-4
3-4
3-5
3-6
3-6
3-6
3-7
3-8
3-9
3-10
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-18
3-18
3-19
3-20
3-21
3-21
3-22
3-23
3-24
3-24
3-25
3-26
3-27
3-28
PAGE
B-300
(18550K)
BLOCK
DIAGRAM
3-3
B-300
(18550K)
WIRING
DIAGRAM
3-4
TONE
GENERATOR
BOARD
SCHEMATIC
(DV-10C)
TONE
GENERATOR
BOARD
LAYOUT
(DV-10C)
PERCUSSION
SWITCH
BOARD
LAYOUT
(SW-98)
SYNTHESIS
FILTER
&
KEY
CLICK
BOARD
SCHEMATIC
(FL-35)
SYNTHESIS
FILTER
&
KEY
CLICK
BOARD
LAYOUT
(F
L-35)
BASS
BOARD
LAYOUT
(EF-207A)
BASS
BOARD
LAYOUT
(EF-207C)
BASS
BOARD
SCHEMATIC
(EF-207A)
BASS
BOARD
SCHEMATIC
(EF-207C)
DEMULTIPLEXER
BOARD
SCHEMATIC
(TG-25B)
DEMULTIPLEXER
BOARD
LAYOUT-
(TG-25B)
MULTIPLEX
&
BUS
AMP.
BOARD
LAYOUT
(TG-35)
MULTIPLEX
&
BUS
AMP.
BOARD
SCHEMATIC
(TG-35)
PICTORIAL
LOGIC
BOARD
SCHEMATIC&
LAYOUT
(LG-25)
MASTER
OSCILLATOR
BOARD
SCHEMATIC
&
LAYOUT
•.
(MG-21)
TONE
BAR
PRESET
SWITCH
BOA
.R•I3
SCHEMATIC
(SW-97)
TONE
BAR
PRESET
SWITCH
BOARD
LAYOUT
(SW-97)
PERCUSSION
•JWSTCH
BOARD-S•CH
EMATIC
(SW-98)
BASS
SWITCH
BOARD
SCHEMATIC
(SW-90)
BASS
SWITCH
BOARD
LAYOUT
(SW-90)
STRING
CONTROL
BOARD
LAYOUT
(SW-99)
LESLIE
SWITCH
BOARD
LAYOUT
(SW-100)
STRING
CONTROL
BOARD
SCHEMATIC
(SW-99)
STRING
ENSEMBLE
BORD
SCHEMATIC
(EF-88A)
STRING
ENSEMBLE
BOARD
LAYOUT
(EF-88A)
PRESET
BOARD
LAYOUT
(EF-209)
PRESET
BOARD
SCHEMATIC
(EF-209)
OUTPUT
BOARD
SCHEMATIC
(PA-46)
OUTPUT
BOARD
LAYOUT
(PA-46)
EXPRESSION
BOARD
SCHEMATIC
&
LAYOUT
(EF-208B)
POWER
SUPPLY
BOARD
SCHEMATIC&LAYOUT
(PS-54C)
REVERB
AMP.
BOARD
SCHEMATIC&
LAYOUT
(RA-1C)
LESLIE
SWITCH
BOARD
SCHEMATIC
(SW-100)
FRONT
STRIP
SWITCH
BOARD
SCHEMATIC
&
LAYOUT
(SW-201)
229-20281
3-5
229-20281
3-6
225-22296
3-6
222-16271
3-7
222-16271
3-8
223-40206
3-8
223-40211
3-8
223-40206
3-9
223-40211
•.
3-10
232-1125•:
3-11
232-11•
3-12
232-1•11
3-12
232-12211
3-13
220-15251
3-14
228-19266
3-15
225-22291
3-16
225-22291
3-17
225-22296
3-18
225-22256
3-19
225-22256
3-20
225-23201
3-20
225-23206
3-20
225-23201
3-21
223-39212
3-22
223-39212
3-23
223-40221
3-23
223-40221
3-24
219-52276
3-25
219-52276
3-26
223-40216
3-26
224-16258
(220V•240V)
3-27
224-16261
(120V)
224-16264
(100V)
223-36213A
3-28
225-23206
3-29
225-23211
3-30
B-300
(18550K)
3-1
RI
M
470K
TLO
81
(•)Pin
+14V
CONTROL
OUT
(CONTROL)
GND
(•Pin
FIGURE
3-24
OUTPUT
BOARD
219-52276
(PA-46)
LAYOUT
EXPRESSION
BOARD
223-40216
(EF-208B)
SCHEMATIC
&
LAYOUT
3-26
B-300
(18550K)
DESIGNATION
PART
NO
DESCRIPTION
ICt
thru
4
319-06013
CD4052BE
Q1
thru
14
305•1043
2SA842BL
Q15
thru
17
305-03073
2SC1681BL
CI
2700
1000,
•-
2'
IQ1
1003
T
---•
R2
•
o
FILTER
L/M
=3
•
PED
#3
PERC.
#3
'A25
•
FROM
IC's
FILTER
GROUP
IN
TO
FILTER
PERC.
PED
#5
•
L/M
•J
A24
Rll
2700
.R19T
TO
FILTER
PERC.
=2
PED
#2
L/M
=2
BB
PHASE
C6.
•100
11101
;6
30
IC3
BB
PH
TO
FILTER
U/M
=7
L/M
=7
L/M
PERC..•-
U/M
=1
PED
#1
J'A22
C8
C9
C10
Q15
2700P
2700P
2700P
R32
R29
22K
R31
47K
R33
Cll
C12 C13
2700P
2700P
2700P
R37
016
R34
22K
R77
100
1/2W
÷14V
C50
47/16
R78
100
1/2W-14V
C51
47/16
4700
I
C14
Ct5 C16
Q17
2ZOOP
2Z00P
2ZOOP
R•2
,•
R39
•
R40
•
1000
R41
R43
47K
4700
J'A21
+14
IC4
-14V
4C.'•25
L•
+14v
C•
•
GND
•00•
FIGURE
3-9
DEMULTIPLEXER
BOARD
232-11
253
(TG-25B)
SCHEMATIC
B-300
(18550K)
3-11
FIGURE
3-10
DEMULTIPLEXER
BOARD
232-11253
(TG-25B)
MULTIPLEX
&
BUS
AMP.
BOARD
232-12211
(TG-35)
LAYOUT
3-12
B-300
(18550K)
C'7
r--
J22
F--
J23
•
gT
22•
-OB
J23
J24
J
24
--I
IC7
J27
14V
•ND
Q9
Q8
J
21A
DIO
•D
INPUT
•)[Cld
D9
IClo
IC2
IClb
IClc
039
C9
C8
C7
Cl4
27P
0,01
33K
Q
I0
R46
1.2M
CI6
R•
iC
4
1.1.
IC6
MC
14069
J27
FIGURE
3-11
MULTIPLEX
&
BUS
AMP.
BOARD
232-12211
(TG-35)
SCHEMATIC
B-300
(18550K)
3-13
J
100<
100K
Zooooooo
0
FIGURE
3-12
PICTORIAL
LOGIC
BOARD
220-15251
(LG-25)
SCHEMATIC
&
LAYOUT
3-14
B-300
(18550K)
J4t
CK
OUT
{•
575•
ICt
4040
9
•
7C
-14V
-14V
405t
4V
-14V
|C2
4046
-14V•
-•4V
D6
Iq
D7
D8
09
Iq
DtO
H
DH
013
H
D14
D15
H
016
D17
228-19266
R22
FIGURE
3-13
MASTER
OSCILLATOR
BOARD.
228-19266
(MG-21)
SCHEMATIC
&
LAYOUT
B-300
(18550K)
3-15
TONEBARS
J102
•'-14V
-|4V
(•
TUNING
-14V
•:•4v
-l•v
PITCH(•)
LM
1NDICATER
•
CANCEL
•
LM
TB
PRESET?
LM
KEY
CRICK
OUT
e'st
•
.L
t6'
(•)
D82
•
•
De61
D89
FIGURE
3-14
TONE
BAR
PRESET
SWITCH
BOARD
225-22291
(SW-97)
SCHEMATIC
D94
•Q25
•Q26
EUSEMBLE
008666444
LED
Q2
DI
Iq
-14V
D67
2
•,I•2
'/3
D
2'
•-
D69
D•,O
D71
0
(•)16'
5
•
®1¾
]CI,2
MCt40018CP
•
•
IC3
RC
4558P
I.,U
0
IC4
MCi401i
BCP
052
D54
J102
D•5,6
057
3-16
B-300
(18550K)
TONEBAR
STRING
8'
FULL
TIBIAS
PERCUSSION
008888666
608807006
LED5
9LED
4
•LED
5
-14
THEATER
BRASS
768888667
LED6
D2
D3
04
I,I
T
H4v
De,
Q4
Q7
-14V
-14V
THEATER
BRASS
STRINGS
Q9•27,29•32
2SAtO|SY
Q1
-8,28
2SC|815Y
Diodes
SI555
J102
U.M
T.B.
CANCEL
PERC
CANCEL
SEVD
@
U.M.T.B
D22
D24
8'
D25
*•---------@
4'
D26
D27
D28
D29
LED
SW-97
d
106
FIGURE
3-15
TONE
BAR
PRESET
SWITCH
BOARD
225-22291
(SW-97)
LAYOUT
B-300
(18550K)
3-17
REP
INFO
(•JH2
-24V
PERC
DECAY
Q3
REPEAT
MARIMBA
VIBRAPHONE
2rd
KEY
DOWN
3rd
LED6
LED5
DECAY
FAST
BANJO
HARPSICHRD
PIANO
•LEDS"
•D9
(•
dfl2
|c4
PC4558c
PIANO
SOLO
KEY
CLICK
CLICK
!•
%0
+•v
•}
1C8
-15V
-14V
IC9
•;
0|3
1C9:
MC
I4066BCP
AUD+14•UD
IC3
MC•4069UBCP
]C5,6
MCI4066BCP
Perc.
DC
D44
-14V
PIANO
SOLO
PIANO
HARPSICHORD
BANJO
|C7
MC
14069UBCP
(9
•,
-7V•
AUD
AUD
FIGURE
3-16
PERCUSSION
SWITCH
BOARD
225-22296
(SW-98)
SCHEMATIC
3-18
B-300
(18550K)
This manual suits for next models
1
