Schematics - Interacoustics AC40 Service Manual

AC40 Service Manual

Schematics

Block Diagram
Talk Forward
Mic 1 Ext
Talk Forward
Mic 1 Int
Mic 2
CD 1
CD
CD 2
Talk Back Mic
Input
110-240V
Power supply
SD
RAM
Pat. R.
Ext. Keyboard
2
Ext . Mouse
USB Host 1
USB Host
HUB
USB Host 4
USB Device
LAN
Laptop -PC
Output Ch 1
Input Att .
Input Ch 1
+30-100 dB
Input
switch
Ch1
Input DAC Ch 1
Input Sw Ch 1
Output Ch 2
Input Att .
Input Ch 2
+30-100 dB
Input
switch
Input DAC Ch 2
Ch2
Input Sw Ch 2
Output Ch 3
Input Ch 3
Input Att .
TDM
+30-100 dB
Input
codec
switch
Ch3
Input DAC Ch 3
Output Ch 4
Input Sw Ch 3
Output Ch 5
Input Att .
Input Ch 4
+30-100 dB
Input
Output Ch 6
switch
Monitor Ch1
Ch4
Input DAC Ch 4
TDM Serial
Input Sw Ch 4
Monitor Ch2
DSP
FLag 20
FLag 21
SPI Codec
FLag 22
Pat . R.
1
SPI
Flash
CPU
SPI
CPU
CS
Unik
ID
LVDS
HDMI
SD
DDR
Flash card
Display
Ram
Socket
600*800
HDMI
Ext .
Output Att . Fix Att.
Ranges Mute
+20-100 dB 0-25 dB
+20 dB
Output DAC Ch 1 Fix Att. Ch1 +20dB Ch 1 Mute Ch 1
Ext .
Output Att . Fix Att.
Ranges Mute
+20-100 dB 0-25 dB
+20 dB
Output DAC Ch 2 Fix Att. Ch2 +20dB Ch 2 Mute Ch 2
Ext .
Output Att . Fix Att.
Ranges Mute
+20-100 dB 0-25 dB
+20 dB
Output DAC Ch 3 Fix Att. Ch3 +20dB Ch 3 Mute Ch 3
Ext .
Output Att . Fix Att.
Ranges Mute
+20-100 dB 0-25 dB
+20 dB
Output DAC Ch 4 Fix Att. Ch4 +20dB Ch 4 Mute Ch 4
+
Input Ch 1
Input Ch 2
Master
Stereo
Input Ch 3
Volume
Monitor
Input Ch 4
Headset
+
+
Input Ch 4
Input Ch 4
Master
Input Ch 4
Volume
Input Ch 4
Stereo
+
Assistent
Reset
Headset
Real
time
CPU SPI in
clock
FLag 20
FLag 21
FLag 22 DSP
SPI
CS
SPI Keyboard
SPI
matrix /
Key Led ctrl
encoders
Keyboard
Page 21
Phone 1/2
Phone 1 L
Left
Phone 2 L
Output
Phone 1 R
Phone 1/2 –
switch
Insert / HF
Phone 2 R
Ch1
Phone - HF L
Insert L
Output Sw Ch 1
Right Insert R
Insert / HF
Phone – HF R
Output
switch
Ins
Ch2
Insert
M
Masking
Output Sw Ch 2
Bone
Bone
B71
1
1
Output
switch
Bone
Bone
Ch3 B71
2
2
FF1 FF1
Output Sw Ch 3
Line
20W
FF1 Line
FF1-2
FF1 P
Output
FF2 Line
switch
FF2 FF2
Ch4
Line 20W
FF2 P
FF3 FF3
Output Sw Ch 4
Line 20W
Monitor
FF3-4 FF3 Line
LSP 1 FF3 P
FF4 Line
FF4 FF4
Monitor
Line 20W
LSP 2
FF4 P
off
Reset
Input Ch 1-2 Fix Att. Ch1-2 Output Ch 1-2
select code code
Fix Att Ch3-4 Output Ch 3-4
Input Ch 3-4
SPI Row 0
Select Code Code
SPI Row 1
Mon Ass
Mon Input FF3-4 Pwr
Ch1/Ch2
SPI Row 2
Att. Ch1 Output DAC
5V
Att. Ch2 Output DAC
SPI Codec
Att. Ch3 Output DAC
8
0.5A
Att. Ch4 Output DAC
channel
Att . Ch2 Intput DAC
DAC
Att. Ch1 Intput DAC
Ext . FF Ctrl
SPI DAC 1 Att . Ch3 Intput DAC
Att . Ch4 Intput DAC
Project Name AC40 block diagram
Document Name AC40 BlockDiagram
Author Ib Pedersen
Current revision 2.0
Revision date 08-06-2012
File Location
D-0100718
Phone
2* Mono
TDH39
TDH 50
DD 45
Insert
2*Mono
EAR 3A
EAR 5A
Phone - HF
2*Mono
HDA200
FF 1
Power
FF 2
Power
FF 3
Power
FF 4
Power
Mute Ch 1-2
FF1-2 Line
Mute Ch 3-4
FF3-4 Line
Option
Ext. Power
FF. Control
Ext. FF