Hammond B-3P - Block Diagram

Upper Keyboard B3 Ass'y
KCH-8AKCH-7A
KCH-11 KCH-12
KCH-3A
KCH-6A,B,C,D,E.F
VGH-39A
VGH-39A
48ch DAC
Master Generator
& Control
48ch DAC
Digital Tone Wheel Ass'y
TGH-53A
TGH-53B
EFH-236A
MXH-33B
CTH-31A
Lower MIDI keyscan
Upper MIDI keyscan
Drawbar Volume
Control
MGH-82A
VRH-23A
BASS TREBLE
REVERB OVERDRIVE
LESLIE
SWITCH
Leslie Switch Ass'y
Volume Panel B3 Ass'y
MASTER
VOLUME
Main/Echo
Control
Drawbar Volume Control
Preset key
VGH-40B
SWH-481C
SWH-491A
Edit Panel B3 Ass'y
LCD
Display
SW scan CPU
MIDI & Pedal keyscan
Switch FPR Ass'y
Switch FPL Ass'y
SWH-487A
SWH-489A
Percussion
ON/OFF
Volume
Decay
Harmonic
Vibrato
Volume soft
Swell
Great
Vibrato SW Ass'y
Drawbar Ass'y
PSH-84A
RLH-493A
DB-409E
DB-409E
DB-402G
DB-409G
DB-409G
IFH-15A
Motor Control Power on/off
EPH116
AES15-5
Lower Keyboard B3 Ass'y
KCH-8A
KCH-7A
KCH-11A
KCH-12A
KCH-3A
KCH-6A,B,C,D,E.F
Preset key
HEAD
PHONE
EXP Control
CNH-21B
IFH-13B
Headphone
Leslie slow/fast
Line in (L)
Leslie Rotary IN
(Return)
Line in (R)
Line out (R)
Line out (L) SEND
AC in
MIDI out
Leslie out (main)
Leslie out (echo)
+5V
Digital
VIBRATO
AND
CHORUS
Pedal Voice
Percussion Voice
Upper
Drawbar Voice
Lower
Drawbar Voice
EXP.Pedal Ass'y
AC Panel Ass'y
Block Diagram for B-3P
Power Transformar
Swithing Power Supply
Power Supply
AC Line Filter
+ 5V Analog
DSP Control
Wave data
MIDI scan
Drawbar scan
Drawbar
Mixer and Power
Upper A# and B
Lower A# and B
Pedal
SW
Pedal voice is synchronized
with drawbar voice
Pedal
Compact
Flash Card
LCD
EXT Memory
SW
+15V
- 15V
EXP9BL
EFH-226A
MCH-73
MCH-73
Pedal Voice GEN.
DSP Effect
PK-25PR Ass'y
KCH-4
KCH-5
Bus bars
x10
Bus bars
x10
Analog Signal
Digital Data and Control Signal
2
B-3P
Block Diagram
B-3P
Slow/Fast