Interacoustics
Diagnostic Audiometer AD226 Service Manual
Service Manual
47 Pages
Preview
Page 1
Service Manual
Diagnostic Audiometer AD226
Part number 80671106 Valid from serial no. 746702
Contents Contents ...1 General Technical Specifications ...2 Specification of input/output connections...3 Calibration properties ...4 Survey of reference values for pure tone audiometer calibration ...4 Disassembly ...6 Electrical Assembling Instrument ...6 Schematics ...7 Block Diagram ...7 Main board Diagram ...8 Component Index ...13 Keys and Led’s Index...14 Component Partlist...15 Connector Board A Diagram ...18 Component Index and Partlist...19 Connection Board B Diagram...20 Component Index and Partlist...21 Fuse PCB ...22 Calibration Procedure ...23 Service, adjustment and repair...23 Equipment for adjustment ...23 Hardware Calibration...23 Calibration of Attenuator in channel 1...23 Calibration of Attenuator in channel 2...24 LCD angle adjustment...25 Software Calibration ...25 General Description ...25 Tone Calibration ...25 Narrow Band Calibration ...25 White Noise Calibration...26 Appendix A Technical Description of the RS232 Interface version 2.00 ...1 General Specification ...1 Control Wires...2 Communication...3 Audiological Information ...4 Test Results...5 Controlling the AD226 ...6 AD226 Status ...7 EEPROM Control ...9 Programming Tips ...9 AD226 OnLine ...9 Examples of Transmission ...9 Window Routines in C++...10 Transmit Data from PC to Instrument ...10 Receive Data from Instrument ...11 Appendix B Setting of Set-up items ...1 Introduction...1 Set-up Items ...1 Set-up item 3 CRC Check...2 Set-up item 8 Bekesy Deviation ...3 Set-up item 13 Buzzer...4 Set-up item 18 Bone Type ...5 Set-up item 22 ABLB Pulse Time...6 Set-up item 27 dB Value ...7 Set-up Item 32 OSHA Level...8 Appendix AD226 U Update News...1 AD226 Service Manual 1
General Technical Specifications Medical CE-mark:
The CE-mark indicates that Interacoustics A/S meets the requirements of Annex II of the Medical Device Directive 93/42/EEC. Approval of the quality system is made by TÜV - identification no. 0123.
IEC 60601-1, Class I, Type B (using UPS400 external power supply) IEC 60601-1-2 EMC: IEC 60645-1/ANSI S3.6 , Type 3 Tone audiometer Audiometer: UPS400 External power supply Power: See description in separate Service Manual 2xT1A + 1xT2A located on PCB Fuses: Operation environment: Temperature: 15 – 35 C 30 – 90% Rel. Humidity: Transport temperature:: -20-50°C 0-50°C Storage temperature: Warm up time: 3 minutes at room temperature (20 C). Standards:
Safety:
Functions Signal sources:
Tone: Masking:
Inputs:
Outputs:
Pat. response Power UPS400 Earphone Right / Left: Bone conductor: Insert masking phone MTP10: Printer:
RS232
11 pure tone and warble test frequencies in the range of 125 – 8000Hz Narrow band noise, in 11 bands. White noise. Connection for patient response switch. Response lamp will light when activated. Connection for external power supply. Can be selected to be either standard earphones or insert phones by pressing shift Right/Left. Masking in Right or Left earphone can be selected. For use of CIR22. Use of MTP10 as printer device Laser printer with HP GL2 language Ink jet or matrix printer using IBM mode (optional) Desk jet printers using HP PCL L3 language (optional) Input/output for computer communication. See separate section in Service Manual for programming details Operator to patient communication. 10 – 110 dB continuously adjustable on the operation panel
Patient Communication:
Talk Forward:
Attenuator:
-10 to 120 dB in 1 or 5 dB steps for tone and speech. The upper 20 dB is accessed by pressing the +20 dB button. 0 – 110 dB in 1 or 5 dB steps for masking noise. Silent touch switch for soft presentation of signals. Tone lamp will light when activated. Tone is presented by activation of Tone Switch. Manual: Tone is interrupted by activation of Tone Switch. Reverse: Single pulse or automatic pulsing with selectable on/off times of Pulse: 250 – 5000ms. Patient controlled Hughson-Westlake test according to ISO 8253-1 with automatic storing of the threshold values in the internal memory. Patient response is open for 2 seconds after signal presentation. 2 out of 3 or 3 out of 5 correct responses can be selected. Pure tone or narrow band stimulation. Fixed frequency. Continuous and pulsed tone. If selected, it will indicate end of automatic test. With automatic score calculation (5 dB included for SISI: familiarisation). Binaural pure tone or speech stimulation. Stenger:
Tone Switch: Tone presentation:
Auto Threshold:
Békésy: Buzzer: Special test types:
AD226 Service Manual 2
Store
Synchronous Masking: Channel 2 options:
Tone in noise. Langenbeck When activated, the displayed values for AC L/R, BC L/R are stored in the internal memory. Stored values can be printed out on a printer if connected. Locks Channel 2 attenuator to Channel 1 attenuator. Output of Channel 2 can be set up to be either Narrow Band or White noise.
Frequencies and maximum intensities Frequency
Air conduction TDH39
Hz 125 250 500 750 1000 1500 2000 3000 4000 6000 8000
dB HL 90 110 120 120 120 120 120 120 120 120 110
EAR-Tone 3A dB HL 90 105 110 115 120 120 120 120 115 100 95
Bone conduction B71
Insert Masking NB/WN
dB HL -45 65 70 70 70 75 80 80 55 50
dB HL -105 110 110 110 110 110 110 105 95 90
Specification of input/output connections Inputs Power UPS400
Patient response
Connector type DIN, 5 pole
Electrical properties 0V Pin 1 and 2: +5V Pin 3: -12V Pin 4: +12V Pin 5: Jack, 6.3mm stereo Handheld switch: Switches 5V to the logic input. (The switch current is 40mA)
Outputs: Phones, Left/ Right Jack, 6.3mm mono
Insert masking phone
Voltage: Up to 5.5V rms. by 10Ω load Min. load impedance: 5Ω Jack, 6.3mm mono As for Phones, Left/Right Jack, 6.3mm mono Voltage: Up to 5.5V rms. by 100Ω load Min. load impedance: 100Ω
Data I/O: RS232C
9 pole Cannon
MTP10 Printer
9 pole Cannon 25 pole Cannon
Bone conductor
RS232 serial port for communication Serial port Parallel port
See appendix A in service manual for detailed information For use of MTP10 as printing device. Standard connection for laser printer, using HPGL2 language. By addition of a built-in adapter (IPA26), the range of printers are increased: IPA26 is not longer available. Desk jet printer, using HP PCL L3 language. Matrix and Inc Jet printers using IBM mode.
Other electrical specifications: Warble
5 Hz sine, ±5% modulation
AD226 Service Manual 3
Calibration properties Telephonics TDH39 with a static force of 4.5N ±0.5N Radioear B71 with a static force of 5.4N ±0.5N ExAxR Tone 3A (Option) CIR22 (Option)
Calibrated Transducers:
Earphones: Bone conductor: Insert phones: Insert masking phone:
Accuracies:
Generally the instrument is made and calibrated to be within and better than the tolerances required in the specified audiometer standards: Frequency: ±1% Pure tone levels: ±3 dB for 125 – 4000Hz ±5 dB for 6000 – 8000Hz
Tone calibration standards and spectral properties: Earphones Pure tone: Narrow band noise: − Spectral properties: White noise: − Spectral properties: Bone conductor Pure tone: Insert phones
Pure tone: Narrow band noise: − Spectral properties:
Insert masking phone
White noise: − Spectral properties: Narrow band noise: − Spectral properties: White noise: − Spectral properties:
ISO 389-1/ ANSI S3.6 for TDH39. ISO 389-1 / ANSI S3.6 + ISO 389-4 values IEC 60645-1, Narrow band noise SPL IEC 60645-1, White noise ISO 389-3 / ANSI S3.6. Valid for placement on the human mastoid ISO 389-2 ISO 389-2+ ISO 389-4 values IEC 60645-1, Narrow band noise, electrically measured. SPL IEC 60645-1, White noise, electrically measured. ISO 389-2 + ISO 389-4 values IEC 60645-1, Narrow-band noise, electrically measured. SPL IEC 60645-1, White noise, electrically measured.
Survey of reference values for pure tone audiometer calibration Freq.
[Hz] 125 250 500 750 1000 1500 2000 3000 4000 6000 8000
ISO 389-1
ANSI S3.6
(TDH39)
(TDH39)
[dB re. 20 µPa] 45,0 25,5 11,5 7,5 7 6,5 9 10 9,5 15,5 13
[dB re. 20 µPa] 45 25,5 11,5 8 7 6,5 9 10 9,5 15,5 13
ISO 389-4 ISO 389-3 ANSI S3.6 (ISO 8798) (ISO 7566) (NB (BC) (BC) masking) [dB re. 20 [dB re. 1µN] [dB re. 1µN] µPa] 4 4 67 67 4 58 58 5 48,5 48,5 6 42,5 42,5 6 36,5 36,5 6 31 31 6 30 30 5 35,5 35,5 5 40 5 40
ISO 389-2 (Insert)
ISO 389-7 Free field (FF)
ISO 389-7 Diffuse-field (FF)
[dB re. 20 µPa] 26 14 5,5 2 0 2 3 3,5 5,5 2 0
[dB re. 20 µPa] 22,0 11,0 4,0 2,0 2,0 0,5 -1,5 -6,0 -6,5 2,5 11,5
[dB re. 20 µPa] 22,0 11,0 3,5 1,0 0,5 -1,0 -1,5 -4,0 -5,0 -0,5 5,5
Coupler types used by calibration − − −
TDH39 is calibrated using a 6cc acoustic coupler made in accordance to IEC 303 Insert phones are calibrated using a 2cc acoustic coupler made in accordance to IEC 126 Bone Conductor is calibrated using a mechanical coupler made in accordance to IEC 373
AD226 Service Manual 4
General properties for earphones Sound attenuation values for earphones Frequency Attenuation EAR-Tone 3A TDH39 with MX41/AR or PN 51 cushion [Hz] [dB] [dB] 125 160 200 250 315 400 500 630 750 800 1000 1250 1500 1600 2000 2500 3000 3150 4000 5000 6000 6300 8000
3 4 5 5 5 6 7 9 11 15 18 21 26 28 31 32 29 26 24
32.5 36 37.5 36.5 33 39.5 42.5
General about Specifications Interacoustics continuously strive to improve the products and their performance. Therefore the specifications can be subject to change without notice. The performance and specifications of the instrument can only be guarantied if it is subject to a technical maintenance at least once a year. This should be made by a workshop, authorised by Interacoustics. Questions about representatives and products may be sent to: Interacoustics A/S Phone: +45 63713555 Drejervaenget 8 Fax: +45 63713522 DK 5610 Assens email: [email protected] Denmark http: www.interacoustics.com
AD226 Service Manual 5
Disassembly Electrical Assembling Instrument I06013601
AD226 Service Manual 6
Schematics Block Diagram 0 S X X=CHANNEL N0. CBA AA_X X=CHANNEL No.
000 001 010 011 100 101 110 111
3210 0000 0001 0010 0100 1000
Talk Forward DSP
-20dB - 0dB - 5dB -10dB -15dB
Left Right Bone Insert Masking FF1 FF2 Reset
BOOT Left EPROM OUTPUT 0 - 120dB
0 - 20dB
+20dB
ATT.
FIX ATT.
CH1
SWITCH 12KHz LPF
CH1 Right
STEREO DSP
CODEC
2186
PCM3001
AA3_1
AA0_1
AA2_1
+20dB_1
OS1C OS1A OS1B
AA1_1
IC61 Bone OUTPUT 0 - 120dB
0 - 20dB
+20dB
ATT.
FIX ATT.
CH2
SWITCH 12KHz LPF
AA3_2
DUAL DAC
AA2_2
AD7249
AA0_2
CH2
+20dB_2
Insert Masking
OS2C OS2A OS2B
AA1_2
VDD
Pat. Response
EPROM
Orange
EEPROM
GND
LCD Angel Adjust
DUAL PORT RAM
CPU RS232
Z180 Green
VDD
MTP10 PRINTER
PARALLEL PRINTER
5450 KEYBOARD LIGHT
KEYBOARD
TONE SWITCH Tone On
Organization
Interacoustics a/s
Title
AD226 Blockdiagram
Document Number Brightness Control
Sheet Date
1
of
1
xd bl 0005 00001 Rev
MBA
Wednesday, April 12, 2000
Page
.
AD226 Service Manual 7
VDD VDD
VDD
R16 10K R154 4K75
IC9
IC10
d0 d1 d2 d3 d4 d5 d6 d7
21 22 1 44 43 42 3 2
D0 D1 D2 D3 D4 D5 D6 D7
c1
27 28 26
INT IEI IEO
c3 c7 c5 a1 a0
4 39 40 41 5 7
CE RD IORQ M1 C/D B/A
c2
29
CLK
6 12 24 25
NC NC NC NC
ADDR. 44-47
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ARDY ASTB
17 16 15 14 11 10 9 8 20 18
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 BRDY BSTB
31 32 33 34 35 36 37 38 23 19
AA0_1 AA1_1 AA2_1 AA3_1 AA0_2 AA1_2 AA2_2 AA3_2
Page4 Page4 Page4 Page4 Page4 Page4 Page4 Page4
VDD OS1A Page5 OS1B Page5 OS1C Page5 OS2A Page5 OS2B Page5 OS2C Page5 TONE Page2 PAT.RESP. Page2 VDD
d0 d1 d2 d3 d4 d5 d6 d7
21 22 1 44 43 42 3 2
D0 D1 D2 D3 D4 D5 D6 D7
c1
27 28 26
INT IEI IEO
c3 c7 c5 a1 a0
4 39 40 41 5 7
CE RD IORQ M1 C/D B/A
c2
29
CLK
6 12 24 25
NC NC NC NC
VDD
VDD VSS
30 13
C15 100n
Z84C20
IC11 ADDR. 48-4B
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ARDY ASTB
17 16 15 14 11 10 9 8 20 18
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 BRDY BSTB
31 32 33 34 35 36 37 38 23 19
dB1A Page2 dB1B Page2 LCLK Page2 SDATA Page2
VDD
21 22 1 44 43 42 3 2
D0 D1 D2 D3 D4 D5 D6 D7
c1
27 28 26
INT IEI IEO
dB2A Page2 dB2B Page2 c3 c7 c5 a1 a0
4 39 40 41 5 7
CE RD IORQ M1 C/D B/A
VDD
c2
29
CLK
6 12 24 25
NC NC NC NC
30 13
C16 100n
Z84C20 GND
IC42 ADDR. 4C-4F
ee0 ee1 ee2 ee3
VDD
VDD VSS
d0 d1 d2 d3 d4 d5 d6 d7
R155 4K75
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ARDY ASTB
17 16 15 14 11 10 9 8 20 18
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 BRDY BSTB
31 32 33 34 35 36 37 38 23 19
TSW Page2 SHIFT Page2 +20dB_2 Page5 +20dB_1 Page5 ROW0 Page2 ROW1 Page2 ROW2 ROW3 Page2 VDD COL0 COL1 COL2 COL3 COL4 COL5 COL6 COL7
Page2 Page2 Page2 Page2 Page2 Page2 Page2 Page2
VDD
d0 d1 d2 d3 d4 d5 d6 d7
21 22 1 44 43 42 3 2
D0 D1 D2 D3 D4 D5 D6 D7
c1
27 28 26
INT IEI IEO
c3 c7 c5 a1 a0
4 39 40 41 5 7
CE RD IORQ M1 C/D B/A
c2
29
CLK
6 12 24 25
NC NC NC NC
VDD
30 13
VDD VSS
C9 100n
Z84C20
ADDR. 50-53
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ARDY ASTB
17 16 15 14 11 10 9 8 20 18
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 BRDY BSTB
31 32 33 34 35 36 37 38 23 19
PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7 RC3,16 PSTROBE BUSY PE -PERR PB4 Page2 PB5 Page2 DSP dc1 Page3 VDD VDD
30 13
VDD VSS
C160 100n
Z84C20
MEB-12C-5
VDD R156 1K5 LS1
GND
T10 BC847 GND
GND GND
d[0..7]
DATA[0..7] Page2,3
ee[0..3] c[0..8]
CNTRL.[0..8] Page3,5
VDD 5 X 10K0 R5
R4
R6
R7
D000-DFFF CSDSP Page3 IC17,51
X1 12.288MHz
R8
a[0..19] C2 12p 5%
c1 VDD
c3
C1 12p 5%
VDD
VDD VDD
c4
IC6
c7
ee0
c8 VDD
C6 100n
MP1 R1 10K
VDD
3 1 + C3 68u 20%
VDD SENSE RESIN CT REF
c0
8 R2 301
RES RES GND
C5 22n 10%
c1 c0
5 6 4
TL7705A C4 100n
GND
R61
c2
200
Page2 TSWCLK 24KHz
9 7 6 5 3 2 4 13 12 14 15 1
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12
CLK RST
c2
10 11
VDD
16
VSS
8
c8
GND VDD C8 100n GND
COM1 Page5 Page5 Page5 Page5
TXA0 RXA0 RTS0 CTS0
GND
74HC4040
Printer TXA1 RXA1
XTAL EXTAL
8
RESET
9 10 11 12
NMI INT0 INT1 INT2
68 67 66 65 63 62 60 5 7 6 61 13 64
c3 c4 c5 c6 c7
IC2 GND
GND
R9 301
IC1
3 4
GND
IC3
7 2
GND
R3 10K
CLK RD WR M1 MREQ IORQ HALT WAIT BUSREQ BUSACK RFSH ST E
48 49 45 46 47 50
TXA0 RXA0 RTS0 CTS0 DCD0 CKA0/DREQ0
58 59
DREQ1 TEND1
54 51 53 56
CKA1/TEND0 TXA1 RXA1 RXS/CTS1
55 57
TXS CKS
52
TEST Z80180
14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 30 31 32
a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 a17
A18/TOUT
33
a18
A19
35
a19
D0 D1 D2 D3 D4 D5 D6 D7
37 38 39 40 41 42 43 44
VCC
34
VSS VSS VSS VSS
1 2 18 36
a12 a13 a14 a15 a16 a17 a18 a19
5 6 7 4 3 2 1 15
A0 A1 A2 A3 A4 A5 A6 A7
c6
13 14
CE1 CE2
VDD
O1 O2 O3 O4
12 11 10 9
VDD
16
GND
8
R157 1K
VDD
100n
a6 a5 c7 d0 d1 d2 d3 d4 d5 d6 d7
GND
GND VDD
GND IC5
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
VDD
15 14 13 12 11 10 9 7
VCC NC NC GND
C12 100n
VDD GND VEE1 VDD1
1 2 3 4 5 6 7 8
RC1 GND
VDD1 C19 100n
VDD
C18 100n
C17 100n
R11 301
a18 R12 NP
R13 0
IC7 a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 a17
12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 30 31
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18
O0 O1 O2 O3 O4 O5 O6 O7
13 14 15 17 18 19 20 21
d0 d1 d2 d3 d4 d5 d6 d7
c3 VDD
22 24 1
CE OE VPP
VEE1
d7 d6 d5 d4
GND
GND
IC8
VDD
VCC
32
GND
16
C13 100n
74HC138 GND
a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12
10 9 8 7 6 5 4 3 25 24 21 23 2
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12
a14
1
NC
GND
VDD
d0 d1 d2 d3 a0 CSAUTO c4 wr c3 rd
16 15 14 13 12 11 10 9
DIP16
R151 301
C11
a2 a3 a4
CS SK DI DO
8 7 6 5 GND
CSLCD Page2
CBAR-D8
100n 1 A 2 B 3 C 16 VDD 8 VSS 6 G1 4 G2A 5 G2B
1 2 3 4
93C66A
C10
GND
ee0 ee1 ee2 ee3
R10 301
IC4
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17
ADDR.[0..19] Page2,3
RC1
I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8
11 12 13 15 16 17 18 19
d0 d1 d2 d3 d4 d5 d6 d7
CE2 CE1 WE OE
26 20 27 22
c4 c3
VCC GND
28 14
M27C4001
6264
0000-CFFF
E000-FFFF
C7 100n
VDD C14 100n
GND R14
0
R15
NP
VDD a13 GND
POWER SUPPLY CONNECTIONS Digital Supply
Analog Supply
Interacoustics A/S
VDD = +5V GND = 0V VDD1 = +12V VDDA = +5V GND = 0V VEE1 = -12V
Date
Constr.
Approved
Construction
091098
MBA
IBP
Revision
030506
PSC
HBJ
Title
Mainboard 071 Partno. 69011001 NP = Not Present
Drawingno. D02003702
Sheet 1 of 5
Page 8
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD VDD IC12
VDD
VDD R19 4K75
R20 4K75
R21 4K75
R22 4K75
R24 4K75
S5
R18 4K75
2
1
AUTO THR.
2
R25 4K75
S4
1
S15
1
SHIFT Page1
R23 4K75
R26 4K75
S3
2
2
S2
1
2
BONE L
S1
1
1 23 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
D11
2
D10 1dB
1
SYNCH
EXT.RANGE
LEFT
RIGHT
S9
S8
S7
S6
D9 MAN. D8
SHIFT GND
2
1
2
1
2
1
MAN/REV
1dB/5dB
2
PULSE
SINGLE PULSE D7 BONE R
1
D6
BONE L/R
AUT. THR. D5 SYNCH. D4 EXT.RANG. D3 LEFT D2
Page1 Page1 Page1 Page1
RIGHT
ROW0 ROW1 ROW2 ROW3
S14
1
S13
2
1
TALK FWD. Page1 Page1 Page1 Page1 Page1 Page1 Page1 Page1
S12A
2
S12B
1
STORE
2
S11A
4
HZ. DEC.
3
1
HZ. INC.
S11B
2
4
S10A
3
1
dB INC.CH2 NP
dB DEC.CH2 NP
S10B
2
4
dB DEC.CH1 NP
IC41
AIN BIN CIN DIN EIN FIN
1 14 3 12 5 10
VDD
16
VDD
OSCI
7
C159 GND 100n
8
GND
OSCO
9
GND
P1
GND
4K7 A
2
D1 3V9
3 CH2
GND GND
GND GND
S16 C158 1n5 10%
1 2 3
VDD1 CH1
VDD
RC3
GND
PD0 PD1 PD3
47K5 R33 47K5
10K
3
C24
22p 5%
22p 5%
D15 T2 BC847
LL4148 + C26 6u8 20%
IC13A 4070
8
R39 10K
10 9
GND
TSW Page1 10K
C27 10n 5%
C46 1u 10%
1
IN
4
SD
OUT
2
ERR
5
PD6 BUSY
+5V
PB5 Page1
+ C161 4u7 20%
R62 49K9
GND
PSTROBE -PERR PD2 PD4 PD5 PD7 PE PB4 Page1
16 15 14 13 12 11 10 9
Ekstern Printer
GND GND
GND
5
VDD LL4148
+ C45 10u 20%
R40
IC13C 4070
D16
GND GND
2
R38 10M
7
C23
D17
1 2 3 4 5 6 7 8
GND
V2 LP2957
GND
1
GND
J1 0
100n
GND
R37 10M
R35 R31
14
47K5
R32 10K
TSWCLK Page1
J2 NP
5%
3
10p
C21 10n 5%
T1 BC857
C25 C22
SDATA Page1 LCLK Page1
VDD 2K
C20 10n 5%
VDD R34
5dB
1
MC14490
VDD1
REV.
D14
R17
S17
AOUT BOUT COUT DOUT EOUT FOUT
MULTI PULSE
D13
GND
dB INC.CH1 NP
BRIGHTNESS CONTROL
15 2 13 4 11 6
44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 2
5450V
VDD
dB2A dB2B dB1A dB1B
OUT18 OUT19 OUT20 OUT21 OUT22 OUT23 OUT24 OUT25 OUT26 OUT27 NC OUT28 OUT29 OUT30 OUT31 OUT32 OUT33 OUT34 ENABLE DATA CLK VSS
3
COL7 COL6 COL5 COL4 COL3 COL2 COL1 COL0 Page1 Page1 Page1 Page1
NC NC OUT17 OUT16 OUT15 OUT14 OUT13 OUT12 OUT11 OUT10 OUT09 NC OUT08 OUT07 OUT06 OUT05 OUT04 OUT03 OUT02 OUT01 BC VDD
D12
GND
12 4
LL4148
11
6
GND R36 Kulfilm 22K Modstand
13 IC13B 4070
GND
IC13D 4070
GND
LCD DISPLAY
IC4,10 Page1 CSLCD
DISPLAY CONNECTION Touch Switch a[0..19]
Page1 ADDR.[0..19]
14
Page1 PAT.RESP.
VDD
VDD
D20 C29 100n
4pol
D19 D21
R41 10K
R42 R43
GND
IC14D 74HC04
RC2
82R5
2 3 6 7
VEE1 GND
GND
14
C156 100n VDD
10
Analog Supply
VDD1 = +12V VDDA = +5V GND = 0V VEE1 = -12V
1 C31 10u 20%
d0 d2 d4 d6
14
1
2
IC14F 74HC04
GND
16 15 14 13 12 11 10 9
VDD
a0
d1 d3 d5 d7
1 2 3 4 5 6 7 8 9 10 11 12 13 14
N1 NP
3
VSS VDD V0 RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7
8 LCD BACKLIGHT N2 NP
VDD
9
VDD
D23
R161 NP
R162 0
R163 0
R164 NP
R46 5R6
Metalfilm Modstand
Green
R44 182
12
1 2 3 4 5 6 7 8
LCM-523
1 16 2 15 3 14 4 13 5 12 6 11 7 10
TO DISPLAY
GND D22
GND TONE Page1
7
GND
OUT
a1
RC1
IC14A 74HC04
GND
Tone CH1
Page1,3 DATA[0..7]
d[0..7]
Interacoustics A/S
14
VDD = +5V GND = 0V
7
Digital Supply
13
100n
4
Date
Constr.
Approved
Construction
091098
MBA
IBP
Revision
030506
PSC
HBJ
R45 182
7
POWER SUPPLY CONNECTIONS
VDD
IN IN IN IN
GND
VEE-ADJ
C30
IC14E 74HC04
14
7
11
P2 10K
V1 79L05
82R5
Orange
8
7
9
D18
C32 100n
VDD
GND
100n
1 2 3 4
Patient response
14
7
IC14C 74HC04
Pat. Response
GND
MX1
5
6
+
C28
5
GND VDD VEE-ADJ a0 a1 CE LCD d0 d1 d2 d3 d4 d5 d6 d7
IC14B 74HC04
NP = Not Present
Title
Mainboard 071
Partno.
69011001
Drawingno. D02003702
Sheet 2 of 5
Page 9
100p
44K2
5K
R149
1K N6
8
R83
7
10K
5
R85
3K01
4
IC23B
DGND NC AGND AGND AGND AGND VDD VEE
IC25A SSM2404
3
GND
OP275
GND
R93
SW/C
1
SW/I
SW/O
3
C85
100p
R96
1K
6
SW/C
10
SW/I
SW/O
VDD1
8
C86
SSM2404
16
SW/C
20
SW/I
13K3
SW/O
100n MP4
C68 100n
SSM2404
3
VDD1
+ C82 10u 20% C163 10u 20%
GND
100n
GND
R138
12K4
C172
C169 10n 5%
GND GND
3
7
8 6
1K5
OP275
5
IC47B 7
C72
OP275
1u 10%
GND
R86
GND
IC24 THAT2181S
1
18K2
8
6
GND
R87 3K92
P7 50K
100n VEE1
GND C79 100n VEE1
GND
R104
C94
100p
1u
47p 5%
N7
N8
VDD1
C96 100n
17
4 7 2 9 12 19
4
1K
IC30A SSM2404
R107 3K40
C95 4u7 20%
3
GND
OP275
+
GND
SW/C
-5dB
1
SW/I
2K21
VEE1
R115
3
C105
100p
R118
1K
SW/C
10
SW/I
SW/O
VDD1
8
C106
SSM2404
16 20 13K3
SW/C SW/I
4K99
SW/O
3
GND
OP275
12K4 C175 10n 5%
GND GND
C92
IC48B
6
C174
7 5 GND
OP275
1u 10%
R108 18K2
1
GND
IC29 THAT2181S
8
VEE1
100n
GND
C162 10u 20%
6 VDD1
GND
C107
IC44
2 3
100n VEE1
3
7
100n
7
8 3
8
1K5
1
82K5 C176 1n 1%
R139
GND
ATOUT_2 Page5
OP27
C183
GND
OP27
4
21K
R141
100n GND
4
GND
IC27B OP275
C178 1n 1%
2
GND
5
IC48A
2
R140 1K5
GND
10K5
GND
6
SSM2404
+ C102 10u 20%
VDD1
6
30K1 C90 10n 5%
R146
VDD1 C98
4
100n VEE1
7
R159
R116
GND
5
GND
R158 21K
6
C89
VDD1 C173 C177 100n 100p 1%
4
R99 4K99
R103
R101 5K36
OP275
4
R98 10K
C91 100p 1%
8
IC27A GND 1
2 3
VREF DSP
R102 5K36
4
R97 10K
MP5
C88 100n
8
Page3 R_OUT
100n VEE1
+
VDD1
GND
100n IC31
2
18
-20dB R100
1%
IC30E
-15dB
C97
6
4K75
Page1 AA3_2 GND
SW/O SSM2404
IC30C
Page1 AA2_2
100n
13
IC30B
5
R114
SW/O SSM2404
Page1 AA1_2
C104 IC28A GND 1
2
4
3K01
8
IC28B
SW/I
1K1
-10dB
8
P6 R105
11
R113
DGND NC AGND AGND AGND AGND VDD VEE
Gain
OP275 7
SW/C
0dB R112
100n
R152 10K
15
VDD1
1%
IC30D
Page1 AA0_2
C103
1K
R150
GND
5
C81
10%
GND
6
18K2
VEE1
44K2
5K
+ C93 68u 20% C166
GND
R89
14
P5
GND
GND
Offset
VREF DAC
10K
C182
R88 243K
DCATT_2 Page3
MP6
OP27
VDD1
GND
R153
GND
IC43
2 3
100n VEE1 GND
100n VEE1
7
C170 1n 1%
3
C87
4
82K5
100n
4
2
21K
R137
GND
10K5
ATOUT_1 Page5
OP27
C80
4
GND
IC22B OP275
IC47A GND 1
100n GND
2
5
R135
R136 1K5
6
C69
VEE1
GND
7
30K1 C70 10n 5%
R133
C168 1n 1%
5
R77 4K99
6
8
5K36
8
OP275
R81
R134 21K
4
R76 10K
R79
4
3 VREF DSP
IC22A GND 1
VDD1 C171 C167 100n 100p 1%
4
2
4
R75 10K
8
L_OUT
VDD1 C78
C71 100p 1%
R80 5K36
Page3
+
VDD1
R94
GND
VEE1
GND
6
4
GND
7
4K99
100n IC26
2
18
-20dB R78
1%
SSM2404
IC25E
-15dB
C77
5
4K75
Page1 AA3_1
100n GND
VEE1
13
IC25C
-10dB R92
SW/O SSM2404
2K21
Page1 AA2_1
C84 IC23A GND 1
2
3K40
C75 4u7 20%
+
GND
C76 100n
1K
4
OP275
6
R91
SW/I IC25B
-5dB
8
P4
VDD1
4 7 2 9 12 19
Gain
10K
DCATT_1 Page3
GND
SW/C
11 1K1
Page1 AA1_1
100n
GND
R117
R90
C83
N5
R95
0dB
10% VDD1
+ C73 68u 20%
1%
1u
15
7
C157
C74
14
P3
R82
17
Offset
IC25D
Page1 AA0_1
VREF DAC
C184
R160 GND
R110 3K92
P8 50K
VEE1
243K GND C99 GND 100n VEE1
100n GND
R111
18K2
C101
47p 5%
VEE1
POWER SUPPLY CONNECTIONS Digital Supply
Analog Supply
Interacoustics A/S
VDD = +5V GND = 0V VDD1 = +12V VDDA = +5V GND = 0V VEE1 = -12V
Date
Constr.
Approved
Construction
091098
MBA
IBP
Revision
030506
PSC
HBJ
Title
Mainboard 071 Partno. 69011001 NP = Not Present
Drawingno.
D02003702
Sheet 4 of 5
Page 11
OUTPUT SWITCH IC32C
VDD1
11
SW/O
+
3
X
16
VDD
8
VSS
7
VEE
1K3 VDD1
VDDA
C110
+20dB
C109 100n
100n GND GND
C111 GND
GND
1K
100n GND
VEE1
R122
3
VDDA
16
VDD
8
VSS
7
VEE
C113 100n
GND
GND_RIGHT GND_BONE
SMD11A05
R127 10
GND_INSERT
4 x 100pF Chassis
RL2 VEE1
3
4
RIGHT OUT
SMD11A05 VDD1
C121
100p
2
VDD
3K01
RIGHT
1%
D31 T5 MJD122
C123 220n 20%
22p 5%
VDD1
C126 100n
X0 X1 X2 X3 X4 X5 X6 X7
13 14 15 12 1 5 2 4
INH A B C
6 11 10 9
IC51
2
GND
3
R124
GND
C127
C125 220n 20% C124 220n 20%
OP27
GND
T6 MJD127
GND R130 10
BONE
100n GND
VEE1
+ C100 10u 20%
c[0..8]
CNTRL.[0..8] Page1
GND_RIGHT
1K
R109 4K75
RESET c0
100
GND 6
MDC3105LT1 T7
LL4148
R129
X
8 7 6 5 4 3 2 1
GND_LEFT
2
VDD
GND
R128
1K3
+20dB CH2
LEFT OUT
1
IC34
14K3
C117 220n 20%
4
1
GND
CH2 R123
C118 220n 20%
Mounted on the jacksocket. ( rearplate )
GND_LEFT
C122
SW/O
3
T4 MJD127
R121
6
C112 +
C120
MX2
RL1
GND
OP27
GND
SW/C SW/I
GND
100
GND 6
Page1 OS1A
IC32B
4u7 20%
3
Page1 OS1B
SSM2402
ATOUT_2 Page4
INH A B C
6 11 10 9
IC50
2
Page1 OS1C
100n VEE1
MP8
X0 X1 X2 X3 X4 X5 X6 X7
13 14 15 12 1 5 2 4
4051
7
1 3 5 8 9 10 12 14
GND NC NC NC NC NC NC NC VDD VEE
16
IC32A SSM2402
4
C116 220n 20%
R126
IC33
14K3
+20dB CH1
2
T3 MJD122
C119 100n
CH1 R120
R119
Page1 +20dB_2
22p 5%
7
SW/I
C108 4u7 20%
C115
LEFT
VDD1
SW/C
SSM2402
ATOUT_1 Page4
100p 1%
4
13 MP7
C114
7
15
3K01
4
Page1 +20dB_1
R125
VEE1 GND
R142
3K01
GND VDD1
4051
C130
100p
1%
C131
22p 5%
T8 MJD122
Page1 OS2C Page1 OS2B Page1 OS2A
VDD1
C132 220n 20%
C135 100n
GND R143
BONE OUT
7 IC52
2 3
100
GND 6
GND C133 220n 20%
OP27
4
VDD GND
C136
T9 MJD127
VDD1
C134 220n 20% R144 10
GND_BONE R147 10K
100n
12 9
RXA1
C145
1u
C146
1u
10%
10%
T1I T2I
T1O T2O
14 7
R1O R2O
R1I R2I
13 8 16
4 3 2 1
GND
Printer
1
C1+
VDD
3
C1-
V+
2 C147 1u
10%
4
C2+
V-
6 C148 1u
10%
5
C2-
GND
VDD
11 10
Page1 RXA0 Page1 CTS0
12 9 1
C149 1u 10%
C150
1u
10%
3 C151
MAX202
1u
10%
GND
T1O T2O
14 7
R1O R2O
R1I R2I
13 8
C1+
VDD
16
T1I T2I
C1-
15 GND
10 9 8 7 6 5 4 3 2 1
IC40 Page1 TXA0 Page1 RTS0
V+
2
4
C2+
V-
6
5
C2-
GND
15
VDD GND
C153 1u
10%
DSR RXD
C142
100n
100n
100n
3 GND
Power Supply
C139 100n GND
VDD1 GND VEE1 VDD GND
D29 NP
Digital Supply
GND D33 SL23
D30 NP
Analog Supply
V3
8 VDD = +5V GND = 0V
C143 10n 5%
VDD1 = +12V VDDA = +5V GND = 0V VEE1 = -12V
78L05
IN
OUT GND GND GND GND
POWER SUPPLY CONNECTIONS D32 SL23
Chassis 100n
1
MP10 C180 + C144 10u 20%
HF3
GND
Chassis 100n
Interacoustics A/S
GND C181
GND
HF1
GND
VDDA
2 3 6 7
VEE1
MX3
External
INS OUT
OP27
GND
C179
6 5 4 3 2 1
GND 6
VDD1 VDD1
From
INSERT
C138 100n
IC53
VEE1
C141
GND
1K96
VDD1
GND
GND
C140
GND
R145
1%
GND_INSERT GND
VDD1
100p
2
MAX202 VDD
C137
TXD CTS DTR VDD GND
C155 100n
10% C154 1u 10%
VEE1 GND
To PC
VDD C152 1u
GND
MX5
7
11 10
TXA1
MX4
4
IC39
VEE1
R148 2K
GND
GND
HF5 Chassis
100n VEE1
Date
Constr.
Approved
Construction
091098
MBA
IBP
Revision
030506
PSC
HBJ
Title
Mainboard 071 Partno. 69011001 NP = Not Present
Drawingno. D02003702
Sheet 5 of 5
Page 12
Component Partlist
Assembled Board PCA 51001902 Quantity Part Reference
Part Number
Value
Tolerance
2 4 2 1 1 1 1 2 3 1 2 4 2 3 86
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 RC1 RC2 RC3 C1 C2 C3 C73 C93 C4 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C25 C28 C29 C30 C32 C35 C36 C37 C38 C39 C42 C43 C49 C50 C51 C53 C54 C62 C63 C64 C66 C68 C69 C76 C77 C78 C79 C80 C83 C84 C86 C87 C88 C89 C96 C97 C98 C99 C103 C104 C106 C107 C109 C110 C111 C113 C119 C120 C126 C127 C135 C136 C138 C139 C140 C141 C142 C155 C156 C159 C160 C171 C172 C173 C174 C179 C180 C181 C182 C183 C184
45108401 35500201 36309201 36309301 36307301 36307501 36307401 36307101 36307201 36307701 75800801 75801301 61420301 61000301 61401101
Labels pertinaxskive tast_0 tast_0 tast_1 tast_1 tast_1 tast_1 tast_2 tast_2 DIP32 DIP16 12p 68u 100n
5% 20% 10%
1 9 1 9 1 11
C5 C20 C21 C27 C44 C70 C90 C143 C169 C175 C22 C23 C24 C33 C34 C47 C48 C115 C122 C131 C26 C31 C45 C52 C65 C67 C82 C100 C102 C144 C162 C163
61400101 61401001 61415301 61400501 61002701 61000201
22n 10n 10p 22p 6u8 10u
10% 5% 5% 5% 20% 20%
1 13
C40 C41 C56 C57 C58 C116 C117 C118 C123 C124 C125 C132 C133 C134 C46 C72 C74 C92 C94 C128 C129 C145 C146 C147 C148 C149 C150 C151 C152 C153 C154 C55 C59 C60 C61 C75 C95 C108 C112 C161 C71 C85 C91 C105 C114 C121 C130 C137 C157 C164 C165 C166 C167 C177 C81 C101 C158 C168 C170 C176 C178 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D25 D26 D31 D18 D19 D20 D21 D22 D23 D24 D32 D33 HF1
61003001 61401201
100u 220n
20% 20%
61401601
1u
10%
61401501 61000501 61400201
470p 4u7 100p
5% 20% 1%
61407901 61400901 61401801 61700101 71700101 61700201 71700301 71700201 61700501 61700301
47p 1n5 1n 3V9 LED LL4148 LED LED 6V2 SL23 Earthgnd
5% 10% 1%
17 2 7 14 2 1 4 1 13 6 4 2 1 2 1
AD226 Service Manual 15
Keys and Led’s Index
AD226 Service Manual 14
Quantity Part Reference
Part Number
Value
Tolerance
1 1 1 4 1 1 2 2 1 1 1 9 1 7 1 2 2 1 1 1 1 1 1 1 2 2 1 8 8 1 11
HF3 HF5 IC1 62000101 IC10 IC11 IC9 IC42 62002601 IC12 62000201 IC13 62000301 IC14 IC46 62000401 IC2 IC45 62000901 IC15 62000501 IC16 72000101 IC17 62000601 IC18 IC26 IC31 IC43 IC44 IC50 IC51 IC52 IC53 62031601 IC19 62000801 IC20 IC22 IC23 IC27 IC28 IC47 IC48 62000701 IC21 62001001 IC24 IC29 62001101 IC25 IC30 62001201 IC3 62001401 IC32 62002101 IC4 72700501 IC5 62001701 IC6 62002901 IC7 72000201 IC8 62008801 IC33 IC34 62001601 IC39 IC40 62002201 IC41 62002301 J1 R13 R14 R54 R71 R72 R162 R163 60400101 L1 L2 L3 L4 L5 L6 L7 L8 60204701 LS1 76300501 MP1 MP2 MP3 MP4 MP5 MP6 MP7 MP8 MP9 MP10 MP11 74000101
Earthgnd Earthgnd Z80180 Z84C20 5450V 4070 74HC04 74HC4040 ADSP-2184 27C010 IDT7130SA20J OP27 PCM3001 OP275 AD7249 THAT2181S SSM2404 TL7705A SSM2402 CBAR-D8 74HC138 93C66A M27C4001 6264 4051 MAX202 MC14490 0 1% 0 1% MEB-12C-5 MP
2 1 1 1 1 1 2 2 2 28
MX1 MX4 MX2 MX3 MX5 P1 P2 P3 P5 P4 P6 P7 P8 R1 R3 R4 R5 R6 R7 R8 R16 R28 R31 R32 R39 R40 R41 R49 R50 R51 R52 R66 R75 R76 R95 R97 R98 R117 R147 R152 R153
75800201 75801101 75800601 75810901 73400101 73400201 63400201 63400301 63403101 60400201
4pol 8pol 6pol 10pol 4K7 10K 5K 1K 50K 10K
1%
6 2 16
R2 R9 R10 R11 R48 R151 R17 R148 R18 R19 R20 R21 R22 R23 R24 R25 R26 R64 R65 R92 R109 R114 R154 R155 R27 R53 R61 R29 R30 R47 R33 R34 R35 R36 R37 R38 R42 R43 R44 R45
60401401 60400901 60401101
301 2K 4K75
1% 1% 1%
60401801 60401701 60402501 70100101 60402601 60425201 60402801
200 100K 47K5 22K 10M 82R5 182
1% 1% 1% 5% 1% 1% 1%
3 3 3 1 2 2 2
AD226 Service Manual 16
Quantity Part Reference
Part Number
Value
Tolerance
1 14
70106101 60403601
5R6 1K
5% 1%
1 4 4 4 2 2 5 2 4 2 2 2 2 2 2 2 2 3 2 4 5 2 1 2 2 12
R46 R56 R57 R58 R59 R60 R63 R68 R96 R118 R121 R124 R131 R132 R157 R62 R67 R127 R130 R144 R77 R78 R99 R100 R79 R80 R101 R102 R81 R103 R82 R104 R83 R105 R125 R128 R142 R85 R107 R86 R89 R108 R111 R87 R110 R88 R160 R90 R112 R91 R113 R93 R115 R94 R116 R119 R122 R120 R123 R126 R129 R143 R133 R159 R134 R135 R146 R158 R136 R138 R140 R141 R156 R137 R139 R145 R149 R150 RL1 RL2 S1 S2 S3 S4 S5 S6 S7 S8 S9 S13 S14 S15
60420301 60401301 60403001 60403101 60403201 60403301 60400701 60403401 60402401 60403501 60402701 60403701 60403801 60403901 60404001 60400801 60401601 60401201 60400401 60400301 60401901 60402301 60416601 70121901 64500101 36302001
1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1%
1 2 1 1 2 3 3 1 1 1 1 2 1
S12 S16 S17 SW1 T1 T2 T10 T3 T5 T8 T4 T6 T9 T7 V1 V2 V3 X1 X3 X2
51000301 73900101 Dummy 64600101 64600401 64600201 64600301 62002701 64300101 64300201 64300301 63201401 63201501
49K9 10 4K99 5K36 30K1 44K2 3K01 3K40 18K2 3K92 243K 1K1 2K21 13K3 10K5 14K3 1K3 100 82K5 21K 1K5 12K4 1K96 1K SMD11A05 SW PUSHBUTTON XA4 CODESWITCH DIGITAST SYM BC857 BC847 MJD122 MJD127 MDC3105LT1 79L05 LP2957 78L05 12.288MHz 16.67MHz
1.4%
AD226 Service Manual 17
Left
Right
J1 Phonejack Stereo SW
GND_Left
J2 Phonejack Stereo SW
LEFT
Model 071: Pat.Response Model 093 = NP
Bone
GND_Right
J3 Phonejack Stereo SW
RIGHT
GND_Bone
BONE
J5 Phonejack Stereo SW
+5V PAT_RES
C1 22n
C2 100p
C3 22n
Chassis
C4 100p
C5 22n
Chassis
C6 100p
C10 22n
Chassis
C11 22n
Chassis
+5V
Model 071: InsertMask. Model 093: Pat.Respose
CO3
J4 Phonejack Stereo SW
PAT_RES
1 2 3 4 4pol
Mainboard 071: MX1 Display Board 093: MX3 GND_INS
R1
0
R2
NP
INS
R3
0
R4
NP
C7 22n
C8 100p
PAT_RES
+5V
C9 NP
Chassis CO1
1 2 3 4 5 6 7 8
GND_INS INS GND_Bone BONE GND_Right RIGHT GND_Left LEFT
CO2
1 2 3 4 5 6
GND_Bone BONE GND_Right RIGHT GND_Left LEFT
N1
N2 Chassis
Presskrue-3mm
Lodde ø
NP
8pol
Mainboard 071: MX2 Model 093 = NP
Interacoustics A/S
Model 071 = NP Mainboard 093: MX1
Date
Constr.
Approved
Construction
080403
PSC
TKJ
Revision
121250
PSC
TKJ
Rear Panel 071/093 Partno. 69011301 Sheet 1 of 1 Title
NP = Not Present
Drawingno. D02002901 071
Page 18
Component Index and Partlist
Quantity Part Reference 2 A1 A2 6 C1 C3 C5 C7 C10 C11 4 C2 C4 C6 C8 1 CO1 1 CO3 5 J1 J2 J3 J4 J5 2 R1 R3
Part Number 65651 60658 59751 42457 42455 60120 60324
Value Tolerance Labels 22n 10% 100p 1% 8pol 4pol Phone jack Stereo SW 0 1%
AD226 Service Manual 19
Mainboard 071: RC3 Mainboard 093: NP
N3 N5 N2 N4 N1
N11 N12 N14 N15 N17 N18
3
1
5
2
4
1
2
4
5
7
8
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CO1 16pol C26
22n
C1
1n
C27
22n
C2
1n
C28
22n
C3
1n
C4
1n
C5
1n
C6
1n
C7
1n
C8
1n
C9
1n
C10
1n
C11
1n
C12
1n
C13
1n
C14
1n
C15
1n
C16
1n
C17
1n
C18
1n
1n
C21
1n
Mainboard 071: MX3 Mainboard 093: MX4
CO3
Mainboard 071: MX4 Mainboard 093: MX5 CO4 10pol
4 3 2 1
10 9 8 7 6 5 4 3 2 1
Mainboard 071: MX5 Mainboard 093: MX2
C29
1n
C38
1n
C30
1n
C39
1n
C31
1n
C40
1n
C32
1n
C41
1n
C33
1n
C42
1n
C34
1n
C43
1n
C35
1n
C44
1n
C36
1n
C45
1n
C37
1n
C46
1n
CO5 4pol
1n
C23
1n
C24
1n 1n
CO2
25pol
PRINTER Chassis
9pol
Chassis
Chassis
Chassis
CO7
9pol
11
CO6
RS232
31
30
10
1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13
1 6 2 7 3 8 4 9 5
Chassis
1 6 2 7 3 8 4 9 5
Chassis Chassis
10
C25
Chassis
NC GND +5V -12V GND +12V
1n
C20
C22
1 2 3 4 5 6
11
C19
6pol
Model 041
Interacoustics A/S
Chassis
Chassis
Date
Constr.
Approved
Construction
080403
PSC
TKJ
Revision
121205
PSC
TKJ
Rear Panel B 071/093 Partno. 69011401 Sheet 1 of 1 Title
NP = Not Present
Drawingno. D02003501 071
Page 20
Component Index and Partlist
Quantity Part Reference 2 A1 A2 43 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46
Part Number Value Tolerance 65651 Labels 66241 1n 10%
3 1 1 1 1 1 2
60658 42461 65898 42456 42458 42455 62179
C26 C27 C28 CO1 CO2 CO3 CO4 CO5 CO6 CO7
22n 10% 16pol 25pol 6pol 10pol 4pol 9pol
AD226 Service Manual 21