Contents
T2000 manual part 10
%%% !"#$
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&&'()
%%% !"#$
+++
!"#!$%&
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+++
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+++
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&$'()"
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ABCDEFGHJ KLMNPQR
REV/ISS AMENDMENTS DATEAPVDD.O.CHKDDRAWN
NO.SHEETS:FILE NAME:
TAIT ELECTRONICS
IPN:
FILE DATE:
ISSUE: ID:.
2.SC.
PROJECT: DESIGNER:
1
1
T2000 DISPLAY PCB
2010/2030
2D1001A
220-01319-01
05/11/96
A
T2000 YH
#TYPE
4LED
2LED
#LED9
SLC-22VR
SLC-22YY’
#LED10
SLC-22YY
SLC-22VR
#LED11
SLC-22MG
-
#LED12
SLC-22VR
-
1A ADDED(3) 1N0 CAPS BY S10 FOR EMC YH 18/11/95
1A UPDATE TEXT RPS 05/11/96
#LED10
YEL #LED11
GREEN #LED12
RED
#LED9
RED
BBADMARK
BADMARK
B1
SWPAD
B2
SWPAD
B3
SWPAD
B4
SWPAD
B5
SWPAD
B6
SWPAD
B7
SWPAD
B8
SWPAD
CONFIG
LINK
C510
100N
C511
15N
C512
1N0
C513
1N0
C514
10N
C515
1N0
C516
4N7 C517
10N
C518
22N
C531
150P
C570
100N
D1
RED D2
RED D3
RED D4
RED
D5
RED
BAV99
D502
2
3
D520YEL DIFF
D521YEL DIFF
D522YEL DIFF
D6
RED D7
RED D8
RED
SHIFT
D0
D1
D2
D3
D4
D5
D6
D7
DS
CKP/S CGND
VCC
Q6
Q7
Q8
REG
IC507
4021
7
6
5
4
13
14
15
1
11
1098
16
2
12
3
SHIFT
REG
IC508
74HC595
DI
14
CK
11
LE
12
RST
10
GND
8
OE
13
VCC
16
Q0 15
Q1 1
Q2 2
Q3 3
Q4 4
Q5 5
Q6 6
Q7 7
SQH9
SHIFT
REG
IC514
74HC595
DI 14
CK 11
LE 12
RST
10
GND
8
OE
13
VCC
16
Q0
15
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
SQH
9
IC515
74HC04
V-
7
V+
14
PT501
10K LOG SPST SWITCH
45
CW PT501
10K LOG SPST SWITCH
3
1
2
P11
2X5 WAY RIGHT ANGLE HEADER
P8
16 WAY PADDLE CONNECTOR
Q506
BC848
Q550
BC848
R517
0
R544
47K
R545
47K
R548
560
R549
560
R550
560
R551
560
R552
560
R553
560
R554
560
R555
560
R556
47K
R557
47K
R558
47K
R559
47K
R560
47K
R561
47K
R562
47K
R563
47K
R564
470
R565
470
R566
470
R567
1K0
R573
1K0
R574
560
R575
560
R576
560
R577
560
R587
10
R588
2K2
R589
4K7
R590
2K2
R591
150
R594
10
S10
6 WAY RIGHT ANGLE PHONE JACK
S11
2X5 WAY PLUG
TBADMARK
BADMARK
IC515
74HC04 5
6
IC515
74HC04
1
2
IC515
74HC04
9
8
IC515
74HC04
13
12
IC515
74HC04
11
10
IC515
74HC04
3
4
P11 +13V8
10
P11 +13V8-UNSW
9
P11
2
P11
5
P11
8
P11
6
P11
1
P11
4
P11 GND
7
P11
3
P8
+13V8 9
P8
+13V8-UNSW 8
P8
+5V 1
P8
DGND 7
P8
VOL 16
P8
AF 14
P8
CLK 4
P8
D8 6
P8
MIC-I/P 15
P8
P/S 5
P8
PTT-IN 12
P8
RESET 3
P8
SQH 2
P8
TX-DATA 10
P8
GND 13
P8
RX-DATA 11
S10 +13.8V
1
S10 GND
5
S10 MIC
4
S10 PTT
3
S10 RXD
6
S10 TXD
2
S11
+13V8 10
S11
+13V8-UNSW
9
S11
7
S11
GND 4
S11
MIC 1
S11
AF 6
S11
VOL 8
S11
PTT 2
S11
RXD 5
S11
TXD 3
+13V8
+13V8
+5V +5V
+5V
+5V
+5V
+5V
BACKLIGHTING
4 LED
2 LED
NOTE: COLOURS SHOWN ARE FOR 4 LED DISPLAY.
,&-. )$
&$'()"
&$'()"
0
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ABCDEFGHJ KLMNPQR
REV/ISS AMENDMENTS DATEAPVDD.O.CHKDDRAWN
NO.SHEETS:FILE NAME:
TAIT ELECTRONICS
IPN:
FILE DATE:
ISSUE: ID:.
2.SC.
PROJECT: DESIGNER:
1
1
T2015/T2060
CONTROL HEAD PCB
2D150L1A
220-01320-01
18-10-96
A
T2000 YH
1A UPDATED FOR EMC MODIFICATIONS YH 19/2/96
2A BP/PW PW
P2 BP/PW PW
P1 BP/PW PW
AUX
SWPAD
B-DN
SWPAD
B-M1
SWPAD
B-M2
SWPAD
B-UP
SWPAD
BUSY
YEL
CALL
SWPAD
C510
100N
C511
15N
C512
1N0
C513
1N0
C516
4N7
C517
22N C518
1N0
C519
10N
C520
3N3
C531
150P
C542
100N
C543
100N
C570
100N
C580
100N
DAUX
RED
DCALL
RED
DMON
RED
DSCAN
RED
D520
YEL DIFF
D521
YEL DIFF
D522
YEL DIFF
SHIFT
D0
D1
D2
D3
D4
D5
D6
D7
DS
CKP/S CGND
VCC
Q6
Q7
Q8
REG
IC507
4021
7
6
5
4
13
14
15
1
11
1098
16
2
12
3
SHIFT
REG
IC508
74HC595
DI
14
CK
11
LE
12
RST
10
GND
8
OE
13
VCC
16
Q0 15
Q1 1
Q2 2
Q3 3
Q4 4
Q5 5
Q6 6
Q7 7
SQH9
IC510
4543
D0
5
D1
3
D2
2
D3
4
LD
1
BI
7
PH
6
GND
8
+V
16
A9
B10
C11
D12
E13
F15
G14
IC512
4543
D0
5
D1
3
D2
2
D3
4
LD
1
BI
7
PH
6
GND
8
+V
16
A9
B10
C11
D12
E13
F15
G14
SHIFT
REG
IC514
74HC595
DI 14
CK 11
LE 12
RST
10
GND
8
OE
13
VCC
16
Q0
15
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
SQH
9
LINK500
MON
SWPAD
PT501
10K LOG SPST SWITCH
4
5
CW PT501
10K LOG SPST SWITCH
3
1
2
Q506
BC848
Q508
BC857
Q509
BC848
Q550
BC848
R500
1K0
R517
0
R544
47K
R545
47K
R552
560
R553
560
R554
560
R555
560
R556
47K
R557
47K
R558
47K
R559
47K
R560
47K
R561
47K
R562
47K
R563
47K
R564
470
R565
470
R566
470
R567
1K0
R573
1K0
R576
560
R577
560
R587
10
R588
2K2
R589
4K7R590
2K2
R591
150
R594
10
R596A
680
R596B
680
R596C
680
R596D
680
R596E
680
R596F
680
R596G
680
R597A
680
R597B
680
R597C
680
R597D
680
R597E
680
R597F
680
R597G
680
R598
2K2
R599
4K7
SCAN
SWPAD
A
B
C
D
E
F
G
A
B
C
D
E
F
G
DP
TENS
HDSP-7503
10
9
8
5
4
2
3
7
16
TX
RED
A
B
C
D
E
F
G
A
B
C
D
E
F
G
DP
UNITS
HDSP-7503
10
9
8
5
4
2
3
7
16
BAV99
D502
2
3
IC515
74HC04 3
4
IC515
74HC04
1
2
IC515
74HC04
13
12
IC515
74HC04
5
6
BBADMARK
BADMARK
IC515
74HC04
V-
7
V+
14
P11
2X5 WAY RIGHT ANGLE HEADER
P8A
8 WAY PADDLE CONNECTOR
S10
6 WAY RIGHT ANGLE PHONE JACK
S11
2X5 WAY PLUG
S8B
8 WAY TOP ENTRY SKT
TBADMARK
BADMARK
P11
10
P11 +13V8-UNSW
9
P11
8
P11
2
P11
5
P11
6
P11
1
P11 GND
7
P11
4
P11
3
P8A
+13V8-UNSW 8
P8A
+5V 1
P8A
DGND 7
P8A
CLK 4
P8A
D8 6
P8A
P/S 5
P8A
RESET 3
P8A
SQH 2
S10 +13.8V
1
S10 GND
5
S10 MIC
4
S10 PTT
3
S10 RXD
6
S10 TXD
2
S11
+13.8V 10
S11
7
S11
GND 4
S11
MIC 1
S11
AF 6
S11
VOL 8
S11
PTT 2
S11
RXD 5
S11
TXD 3
S11
9
S8B
+13V8 1
S8B
VOL 8
S8B
AF 6
S8B
MIC-I/P 7
S8B
PTT-IN 4
S8B
TXD 2
S8B
GND 5
S8B
RXD 3
+13V8
+13V8
+5V
+5V
+5V
+5V
+5V +5V
+5V
DISPLAY BOARD
7X
X7
X7
MIC SKT
POT BOARD
,&-. )$
&$'()"
%&$'()"
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ABCDEFGHJ KLMNPQR
REV/ISS AMENDMENTS DATEAPVDD.O.CHKDDRAWN
NO.SHEETS:FILE NAME:
TAIT ELECTRONICS
IPN:
FILE DATE:
ISSUE: ID:.
2.SC.
PROJECT: DESIGNER:
1
1
T2000 LCD DISPLAY
2D200L4A
220-01321-04
05/11/96
A
T2000 YH
*R732
-
1K0S
*C721
-
22NT
*C720
4U7FR
-
*MIC
DYNAMIC
ELECTRET
0A DEPANELLED AND ADDED ECON CCT. MNC KB
2A ADDED EMI CAPACITORS,CHANGE S9A TO SMD YH 19/9/95
3A UPDATED FOR EMC MODS,AND CHANGED S9A TO LEADED MICRO-M. YH 16/12/95
4A SAME AS 3A,MOVED CHIPS AROUND THE CLIP YH 28/2/96
4A UPDATE TEXT RPS 05/11/96
*C720
4U7
*C721
22N
*R732
1K0
B*
SWPAD B#
SWPAD
BULB-701
LAMP 5V
BULB-702
LAMP 5V
BULB-703
LAMP 5V
BULB-704
LAMP 5V
BULB-705
LAMP 5V
B0
SWPAD
B1
SWPAD B2
SWPAD B3
SWPAD
B4
SWPAD B5
SWPAD B6
SWPAD
B7
SWPAD B8
SWPAD B9
SWPAD
C102
4U7 C103
1N0
C531
150P
C700
1N0
C701
22P
C702
22P
C703
100N
C704
100N
C705
100N C706
47U
C707
10N
C708
4N7
C709
0805
C710
1N0
C711
15N
C712
1N0
C713
4N7
C714
10U
C715
10U
C716
100N
C717
15N
C720
47U
C721
1N0
C722
100N
C723
100N
C725
1N0
C726
1N0
C727
100N
C728
10N
C729
10N
C730
4N7
C731
10N
C732
10N
C733
1N0
C734
22N
C911
0805
C912
0805
C913
0805
C914
0805
C915
0805
DF1
RED
DF2
RED
DF3
RED
DF4
RED
DF5
RED
DF6
RED
DF7
RED
DF8
RED
BAV99
D701 3
1
BAV99
D703 2
3
BAV99
D703
3
1
D710
3V3
D711
3V3
D712
3V3
D713
4V7
D714
4V7
F1
SWPAD F2
SWPAD F3
SWPAD F4
SWPAD
F5
SWPAD F6
SWPAD F7
SWPAD F8
SWPAD
IC701
68HC05C4FN
IRQ 2
TCAP 41
PA7 5
PA6 6
PA5 7
PA4 8
PA3 9
PA2 10
PA1 11
PA0 12
PB7 21
PB6 20
PB5 19
PB4 17
PB3 16
PB2 15
PB1 14
PB0 13
OSC1
43
OSC2
42
GND
22
RESET
1
VPP
4
VCC
44
NC
3
NC
18
NC
23
NC
40
PD7
39
TCMP
38
SS/PD5
37
SCK/PD4
36
MOSI/PD3
35
MISO/PD2
34
TDO/PD1
33
RDI/PD0
32
PC7
24
PC6
25
PC5
26
PC4
27
PC3
28
PC2
29
PC1
30
PC0
31
IC702
8576T
SDA
1
SCL
2
SYNC
3
CLK
4
OSC
6
A0
7
A1
8
A2
9
SA0
10
BP0
13
BP1
15
BP2
14
BP3
16
S0
17
S1
18
S2
19
S3
20
S4
21
S5
22
S6
23
S7
24
S8
25
S9
26
S10
27
S11
28
VSS
11
VLCD
12 VDD
5
S39 56
S38 55
S37 54
S36 53
S35 52
S34 51
S33 50
S32 49
S31 48
S30 47
S29 46
S28 45
S27 44
S26 43
S25 42
S24 41
S23 40
S22 39
S21 38
S20 37
S19 36
S18 35
S17 34
S16 33
S15 32
S14 31
S13 30
S12 29
IC703
74HC04
V-
7
V+
14
IC703
74HC04
1
2
IC703
74HC04
5
6
IC703
74HC04
3
4
IC703
74HC04
98
IC703
74HC04
11
10
IC703
74HC04
13
12
IC704
74HC04
V-
7
V+
14
IC704
74HC04
1
2
IC704
74HC04
3
4
IC704
74HC04
13
12
IC704
74HC04
11
10
IC704
74HC04
5
6
IC704
74HC04
9
8
VIN
N/C
VOUT
N/C
GROUND
IC705
78L05
8
4
2367
1
5
LVI
IC706
MC34064D
IN
2
GND
4
RES 1
T2000LCD
LCD
COM1
42
COM2
43
COM3
1
1BHC
37
1KNBUSY
38
1JMA
39
1ILD
40
1FGE
41
2BHC
32
2KNTX
33
2JMA
34
2ILD
35
2FGE
36
3BHC
27
3KNSCAN
28
3JMA
29
3ILD
30
3FGE
31
4BHC
22
4KNWAIT
23
4JMA
24
4ILD
25
4FGE
26
5BHC 17
5KNGO18
5JMA 19
5ILD 20
5FGE 21
6BHC 12
6KNP1 13
6JMA 14
6ILD 15
6FGE 16
7BHC 7
7KNX1 8
7JMA 9
7ILD 10
7FGE 11
8BHC 2
8KNSVC 3
8JMA 4
8ILD 5
8FGE 6
CW
PT501
10K LOG SPST SWITCH
3
1
2
PT501
10K LOG SPST SWITCH
4
5
P701
I/OPAD
P702 I/OPAD
P703
I/OPAD
Q103
BCW72
Q701
BC848
Q702
BC857
Q703
BC848
Q704
BC857
Q705
BC848 Q706
BC848
Q710
BC848
Q711
BC869
Q712
BC848
Q713
BC857
Q714
BC848
Q715
BC857
R106
2K2
R110
0805
R517
0
R595
10
R701
2K7 R702
2K7 R703
2K7 R704
2K7
R705
47K R706
47K R707
47K R708
47K R709
47K
R710
470
R711
470
R712
470
R713
47K
R714
47K
R715
4K7
R716
4K7
R717
2K7
R718
47K
R719
10K
R720
10
R721
33K
R722
18K
R723
330
R724
330
R725
10
R726
68K
R727
120K
R728
10
R729
330
R730
47K
R731
47K
R733
2K2
R734
2K2
R735
1K8
R736
6K8
R737
10K
R738
2K7
R739
2K2
R740
12K
R741
33K
R742
560K
R743
10
R746
10K
R747
330K
R750
4K7
R751
470
R752
470
R753
330
R760
4K7 R761
4K7
R762
10K R763
10K
R764
3K3 R765
10K R766
10K
R767
10M
R768
47K
R769
180K
R770
10K
R771
10K
R772
10K
R773
10K
R774
10K
R775
10K
R776
10K
R777
10K
R778
560
R779
560
R780
560
R781
560
R782
560
R783
560
R784
560
R785
560
R790
470
R791
390
R792
33 R793
33
R795
470
R796
1K2
-T
R797
10K
X701
4M
BBADMARK
BADMARK TBADMARK
BADMARK
S11
2X5 WAY PLUG
S9A
8 WAY TOP ENTRY SKT
P11
2X5 WAY RIGHT ANGLE HEADER
S20
T2000 DTMF PCB
S10
6 WAY RIGHT ANGLE PHONE JACK
P11
+13.0V-UNSW 9
P11
+13V0
10
P11
TXD 3
P11
7
P11
RXD 5
P11
MIC 1
P11
AF 6
P11
VOL 8
P11
GND 4
P11
PTT 2
S10
+13.8V 1
S10
GND 5
S10
MIC 4
S10
PTT 3
S10
RXD 6
S10
TXD 2
S11
9
S11 +13V8-SW
10
S11
7
S11
4
S11
6
S11
1
S11
2
S11
5
S11
3
S11
8
S20 +5V
6
S20 DGND
1
S20 SERIAL-CLK
3
S20 SERIAL-DATA
2
S20 DTMF-OUT
4
S20 MIC-COMPRESS
5
S9A +13.0V-UNSW
1
S9A DGND
2
S9A AF
6
S9A GND
5
S9A MIC-O/P
7
S9A RXDATA
4
S9A TXDATA
3
S9A VOL
8
+13.0V-UNSW
+13.0V-UNSW
+13V0
+13V0
+13V0
+13V0
+13V0
+5V
+5V+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
TO CONTROL BOARD
POT BOARD
DISPLAY BOARD
MIC SOCKET
HOOK
DETECT
BACKLIGHTING
DECOUPLING
BP0
BP0
BP1
BP1
BP2
BP2
S0
S0
S1
S1
S10
S10
S11
S11
S12
S12
S13
S13
S14
S14
S15
S15
S16
S16
S17
S17
S18
S18
S19
S19
S2
S2
S20
S20
S21
S21
S22
S22
S23
S23
S24
S24
S25
S25
S26
S26
S27
S27
S28
S28
S29
S29
S3
S3
S30
S30
S31
S31
S32
S32
S33
S33
S34
S34
S35
S35
S36
S36
S37
S37
S38
S38
S39
S39
S4
S4
S5
S5
S6
S6
S7
S7
S8
S8
S9
S9
+,&-. )$
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0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
ABCDEFGHJ KLMNPQR
REV/ISS AMENDMENTS DATEAPVDD.O.CHKDDRAWN
NO.SHEETS:FILE NAME:
TAIT ELECTRONICS
IPN:
FILE DATE:
ISSUE: ID:.
2.SC.
PROJECT: DESIGNER:
1
1
T2035 CONTROL HEAD PCB
2D35L3A
220-01322-03
18-10-96
A
T2000 YH
PROTO-1 ORIGINAL BY BRENT.P (MODIFIED DISPLAY BY JF) B,P.(J,F) S,H. 23/11/93
P2 FETCHED IN CORRECTED 40218D VERSION ONLY B,P.(J,F) S,H. 26/2/94
0A ADDED IC517 & IC512-GATES. B,P.(J,F) S,H. 27/5/94
1A DEPANELLED THE DISPLAY BOARD YH 5/10/95
2A ADDED 4 CAPS BY PIN(1,3,4) S10 FOR EMC MODS YH 23/01/96
3A MOVED C520 AWAY FROM S11 YH 1/3/96
2A PRE-PRODUCTION UPDATE BP
T99 UPDATE FROM PROTO-1 BP 01/03/91
PROTO-1 ORIGINAL BP 28/8/90
CALL
SWPAD
CALL-BK
RED
CLEAR
RED
CLR
SWPAD
C510
10N
C511
15N
C512
1N0
C513
1N0
C516
4N7
C517
3N3
C518
10N
C519
1N0
C520
22N
C531
150P
C542
100N
C570
100N
C571
100N
C580
100N
DESP
SWPAD
DSP
RED
D520
YEL DIFF
D521
YEL DIFF
D522
YEL DIFF
BAV99
D523
2
3
BAV99
D523
3
1
BAV99
D524
2
3
FUNC
SWPAD
FUNCTION
RED
GO
GREEN A
B
C
D
E
F
G
A
B
C
D
E
F
G
DP
HUNDREDS
HDSP-7503
10
9
8
5
4
2
3
7
16
SHIFT
D0
D1
D2
D3
D4
D5
D6
D7
DS
CKP/S CGND
VCC
Q6
Q7
Q8
REG
IC507
4021
7
6
5
4
13
14
15
1
11
1098
16
2
12
3
IC508
14499
DATA
5
OSC
6
CL
15
EN
14
VSS
9
VDD
20
A4
B3
C2
D1
E19
F18
G17
H16
113
212
38
47
SHIFT
REG
IC514
74HC595
DI 14
CK 11
LE 12
RST
10
GND
8
OE
13
VCC
16
Q0
15
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
SQH
9
PAD1
I/OPAD
PAD2
I/OPAD
PAD3
I/OPAD
PAD4
I/OPAD
PT501
10K LOG SPST SWITCH
4
5
CW PT501
10K LOG SPST SWITCH
3
1
2
QUE
SWPAD
Q506
BC848
Q512
BC848
Q513
BC848
Q514
BC848
Q515
BC848
Q516
BC848
Q550
BC848
R517
0
R544
47K
R545
47K
R552
270 R553
270 R554
270
R555
270
R556
47K
R557
47K
R558
47K
R559
47K
R560
47K
R561
47K
R562
47K
R563
47K
R564
470
R565
470
R566
470
R567
270
R573
1K0
R574
270 R575
270
R587
10
R588
2K2
R589
4K7R590
2K2
R591
150
R594
10
R597
270
R635
10K
R636
560
R637
560
R638
560
R639
560
R643
47K
SVC
RED
A
B
C
D
E
F
G
A
B
C
D
E
F
G
DP
TENS
HDSP-7503
10
9
8
5
4
2
3
7
16
TX
RED
A
B
C
D
E
F
G
A
B
C
D
E
F
G
DP
UNITS
HDSP-7503
10
9
8
5
4
2
3
7
16
WAIT
YEL
X1
SWPAD
X10
SWPAD
X100
SWPAD
BAV99
D502
2
3
IC515
74HC04
5
6
IC515
74HC04
1
2
IC515
74HC04
9
8
IC515
74HC04
3
4
D
D
FF
IC517
74HC74
D
12
CP
11
R
13
S
10
Q9
Q8
D
D
FF
IC517
74HC74
D
2
CP
3
R
1
S
4
Q5
Q6
P11
2X5 WAY RIGHT ANGLE HEADER
P8A
8 WAY PADDLE CONNECTOR
S10
6 WAY RIGHT ANGLE PHONE JACK
S11
2X5 WAY PLUG
S8B
8 WAY TOP ENTRY SKT
BBADMARK
BADMARK
IC515
74HC04
V-
7
V+
14
IC517
74HC74
V-
7
V+
14
TBADMARK
BADMARK
P11
9
P11
2
P11
5
P11
8
P11
6
P11
1
P11
4
P11 GND
7
P11
3
P11
10
P8A
+13V8 8
P8A
+5V 1
P8A
DGND 7
P8A
CLK 4
P8A
D8 6
P8A
P/S 5
P8A
RESET 3
P8A
SQH 2
S10 +13.8V
1
S10 GND
5
S10 MIC
4
S10 PTT
3
S10 RXD
6
S10 TXD
2
S11
+13.8V 10
S11
GND 4
S11
7
S11
MIC 1
S11
AF 6
S11
VOL 8
S11
PTT 2
S11
RXD 5
S11
TXD 3
S11
+13.8V-UNSW 9
S8B
VOL 8
S8B
AF 6
S8B
MIC-I/P 7
S8B
PTT-IN 4
S8B
TXD 2
S8B
GND 5
S8B
RXD 3
S8B
+13.8V 1
+5V
+5V
+5V +5V
+5V+5V
+5V
13.8
13.8
13.8
+5V
MIC SKT
+ V
7X
+V
DISPLAY BOARD
POT BOARD
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