Kenwood TK-2402, Service Manual

Page: 45 / 46

INT-SP
EXT-SP/MIC
INT-MIC
-t
-t
SDATA_I_CML
GRNLED
REDLED
BATT
B
GND
INT
DETAF
SDATA_O_CML
BLULED
DICSW
PLL_CLK
PLL_DATA
RSSI
BUSY
5TC
SCLK_CML
EN2 EN1
FP2 FP1
EN2
EN3
EN3
EN1
50T
RESET
50M
50V
33M
MOD1
PLL_DAT
PLL_LE
PLL_PS
PLL_CLK
PLL_LE
PLL_UL
PLL_PS
19.2MHz
TH_DET
DVDD
APCSW
PC
50R
VOLGND
MINVOL
EXTSPSW
VOLOUT
VOX
MIC_MT VOX
EMPTT
CML_CSN
TX/RX
TX/RX
SB
SB
AsstSW
TXD_OUT
TXD
J601
PTT/RXD
SB
BPF1
33M
TXD
50M
MIC
MIC
50V
BUSY
CVIN
VOLIN VOLIN
EN4 EN4
INTSPMT
INTSPMT
OPTDET
OPTDET
BPF1
VOLOUT
50T
19.2MHz
+B
PTT_RXD
33MS
PLL_LD
33MS
50C
50R
CV
Freq
FIN
Do
33MSC
GRNLED
REDLED
BATT
INT
BLULED
RESET
50M
50V
33M
MOD1
SB
WIDE/NARROW
50V
33M
SB
LSDO
DISCFB
VOLIN
VOLOUT
50T
19.2MHz
+B
PTT_RXD
50C
50R
50R
CV
Freq
FIN
Do
50C
Do
VOLOUT
50R
33M
33M
33M
33M
33M
33M
R 7 0 3
1 0 k
C214
1000p
C438
13p
L416
68n
C705
1u
C275
20p
C452
1000p
C419
1000p
BPF
C429
18p
C464
1000p
C412
27p
C431
1000p
C235
47p
R743
10k
R242
470k
R212
1.5k
R725
47k
R737
1k
C772
47p
C264
1000p
C788
10u
TH400
470k
C454
1p
R253
82k
IC401
NJM2591V
1
2
3
4
5
6
7
8
oSCIN
oSCoUT
MIXoUT
V+
IFIN
DEC
FILoUT
FILIN
9
AFoUT
10
QUAD
11
IFoUT
12
RSSI
13
NoISEDET
14
NoISEREC
15
GND
16
MIXIN
C735
10u
C202
47p
C606
1u
C229
1000p
2SC4116(GR)F
Q705
R601
100k
C736
1000p
F 6 0 1
R723
6.8k
D202
RN142S
C233
1000p
C414
680p
C406
220p
HSDENC
CP22 1kX2
C744 10u
C405
82p
C410
220p
C806 1000p
C268
1000p
R248
1M
C611
1000p
R783
2.7k
IC707
TA7368PL
1
2
3
4
5
NC1
VCC
NC2
VIN
RIPPLE
6
N F
7
P H A S E
8
PRE-GND
9
PW-GND
10
P o U T
R31
330k
IC603
XC6209B502P-G
1
NC
2
VSS
3
CE
4
5
VIN
VoUT
R 7 3 9
4 . 7 k
R230 0.39
C624
1000p
C465
1000p
L415
68n
R225
82k
R214
560
Q703
UPA672T-A
C401
0.1u
C411
0.1u
C759
1u
C610
1000p
C800 1000p
R794
1.5k
R239
33k
L404
560n
IC200
NJM12904RB1
1
2
3
4
AoUT
A-IN
A+IN
GND
5
B+IN
6
B-IN
7
BoUT
8
V+
R611 100k
C274
16p
R420
470
C252
1000p
R412
10
R419
470
R1
10k
R229
390
C269
1000p
R252
0
C279
7p
C278
22p
C458
4p
R202
0
R425
56k
R217
12
R227
56k
C420
0.1u
R210
22
C16
0.01u
C7
10p
R33
120k
C250
1000p
C232
1000p
C5
1000p
R604
330
R802
470k
R734
4.7k
C745
0.1u
C34 0.1u
C212
1000p
C482
22p
C222
1000p
R251
270
IC601
XC6209B502P-G
1
NC
2
VSS
3
CE
4
5
VIN
VoUT
R608
270
L219
C280
10p
R760
47k
C746
1000p
R717 100k
R806
10k
R211
1.2k
R34
100k
C434
10p
IC1
TC75S51FE(F)
1
IN+
2
VSS
3
IN-
4
5
oUT
VDD
R440
0
C3
100p
R200
4.7k
C403
0.01u
C475
20p
CVIN
C51
1000p
L209
R759
15k
C445
1.5p
C424
0.1u
R250
0
C435 0.01u
IC3
BD7542FVM
1
2
3
4
oUT1
IN1-
IN1+
VSS
5
I N 2 +
6
I N 2 -
7
o U T 2
8
V D D
C602
2.2u
C33
0.01u
C263
1000p
R410
1.8k
R784
1k
R428
56k
L216 2.2u
R792
470
L205
100n
INT
C446
1000p
R431 470k
R426 100k
R790
10k
R705
10k
RESET
D401
1SV323F
C760
0.47u
C216
39p
3SK293-F
Q405
C747
1500p
C240 150p
IC605
BU4830F
1
VoUT
2
VDD
4 3
GND NC
C717
0.012u
C612
0.1u
C27
1000p
C621
1u
R796
560
R 4
1 2 0
C730
1u
R233
0.39
R738
0
R755
560k C739
0.01u
R767 100k
C615
1000p
D15
HSC277
C417
56p
R736
1k
C260
22p
R613
100k
C790
0.047u
R9
10k
C751
68p
C245
1u
L600
R32
1.5k
R39
100k
C421
0.033u
C219
30p
3SK318
Q404
R433
680
R418
680k
C781
0.1u
R718
47k
C408
0.1u
VCC
L204
33n
C432
0.01u
C262
0.1u
D604
B30-1790-05
BLUE
C777
0.068u
C19
0.01u
R228
33k
C470 1p
C228
68p
R8
330
C484
8p
C798
1000p
R811 270k
R236
22
C213
1000p
R801
150
R441
470k
R711
10k
D404 1SV323F
C437
16p
C272
1000p
R435
470
C56 10u
C423 0.22u
R774
100
R424
470
R237
150k
R437 560k
R11
1.2k
R765
27k
R780
470k
C270
10p
R814
27k
C729
5p
C443
1000p
C242
39p
L402
1.5u
C629 0.01u
D14
HSC277
R766
2.2k
C2
1000p
VSS
R772
150k
R224
47
R24
470k
L411
68n
R400
330k
D602
B30-2315-05
C224
1000p
R768
10k
D403
1SV323F
C704
1000p
C630
1000p
C618
1u
R787 1M
L218
C271
11p
C761
0.47u
C450
1000p
C775
0.1u
C273
10p
L403
L220
R246
470k
C771
1000p
R 6 0 9
1 k
EM_SCLK
C425 1000p
R788
47k
C764
1000p
R605
22k
R719
22k
L601
R241 470k
C474
4p
SSM3J36TUT
Q1
R25
10M
R694
10
C613
1000p
C471
27p
C623
1000p
C779
10u
SB
L217
D201
RN142S
R403
1.8k
C740
0.1u
C247
0.1u
R48
4.7k
R21
1M
D605
RKZ5.1B2KG
C441
0.01u
C748
1u
C239 150p
C766 0.47u
2SK3577-A
Q713
C725
5p
C257
39p
L207
39n
RD07MUS2BT112
Q208
IC600
XC61CN4502M-G
2
VSS
3
VIN
1
VoUT
2SK3577-A
Q716
C604
1000p
R751
1M
C211
1000p
R423
2.2k
SSM3J36TUT
Q8
C 2 0 8
39p
R10
100
R769
100k
R770
180k
R407
3.3k
R7
5.6k
R243
10k
L 1
4.7u
KTC4080E-P
Q400
C407
39p
C773
1000p
C249
470p
C258
1000p
C456
4p
2SC5455-A
Q201
R782
47k
C778
1000p
C732
1000p
C469
12p
C765
1000p
R786
100k
R763
390k
R413
82k
KTC4075E(Y,GR)
Q403
C426
0.01u
R602
100k
C459
27p
C439
3p
C433
1000p
C201
1000p
RD01MUS1-T113
Q206
R612
100k
CP26
47kX2
C755
390p
CP1
R408
3.3k
TXD
C774
1000p
C600
1u
C81
18p
R600
220
R702
10k
D203
HVC131
R427 100k
C11 10p
C422
10p
C415
10u
I C 7 0 2
F 3 6 3 B E D F E K D L F
1
BLULED
2
LSDO
3
HSDENC
4
CML_CSN
5
SCLK_CML
6
MODE
7
SDATA_I_CML
8
SDATA_O_CML
9
RESET
10
XOUT
11
VSS
12
XIN
13
VCC
14
BSHIFT
15
CML_IRQ
16
INSPMT
17
INT0
18
INSPSW
19
NC
20
5RC
INSPMT
5RC 5CC
2 1
5CC
2 2
NC
2 3
NC
2 4
TXD
2 5
RXD
2 6
EM_SCLK
2 7
NC
2 8
EMPTT
2 9
PTT
3 0
NC
3 1
50VC
50VC
3 2
5TC
3 3
NC
3 4
EMP
3 5
LPSW
3 6
33MSC
3 7
NC
3 8
NC
3 9
CE
4 0
MODEL
41
OPTDET
42
GRNLED
43
REDLED
44
MIC_MT
MIC_MT
45
EXTSPSW
OPTDET
EXTSPSW
46
MINVOL
MINVOL
47
DICSW
48
EN1
49
EN3
50
EN2
51
EN4
52
PF1
53
PF2
EN1 EN3 EN2 EN4
PF1 PF2
54
APCSW
55
SCLK_EEP
56
SDATA_O_EEP
57
EEP_WP
58
SDATA_I_EEP
59
EEP_CS
60
TH_DET
61
QT/DQT IN
62
HSDDEC
63
BATT
64
CVIN
65
BUSY
66
RSSI
RSSI
67
VOX
68
NC
69
NC
70
PLL_PS
71
PLL_UL
72
PLL_LE
73
PLL_DATA
74
PLL_CLK
75
AVSS
76
WIDE/NARROW
77
VREF
78
AVCC
79
ASSTSW
80
TX/RX
C455
39p
C50
33p
L208
R26
1k
C28
1000p
CD400
L79-1866-05
R434
0
D700
KDR731
C 2 0 7
3 9 p
R205
0
R223
560
BUSY
R244
56k
C478
8p
C453
1000p
R731 10k
C444
1000p
SSM3J36TUT
Q606
R606
100k
R762 100k
C743
0.01u
R404
470k
C413
1800p
R744
15
RSSI
L414
68n
C756
1u
C230
47p
C15
0.01u
MODE
C631
1000p
D603
GN1G
D402
1SV323F
R812
47k
CP23 47kX2
C42
0.1u
C609
1000p
C227
4.7u
IC703
MM1856A33N
1 VIN
2 GND
3
CoNT
4
NC
5
VoUT
L206
R816
1k
R701
10k
D601
B30-2314-05
C236
10p
C404
56p
L412
R438 100k
C457
1000p
R219
470
C763
0.1u
R789
10k
TH200
100k
2SB1694
Q710
R740
4.7k
R761
0
C442
1p
R795
47k
R409 2.2k
C472
1000p
C749 100p
L213
R773
10k
C802
1000p
C59
1u
C780
1000p
PTT/RXD
IC602
MM1856A50N
1
2
3
VIN
GND
CoNT
4
NC
5
VoUT
C4
100p
IC706
BU7465HFV
1
IN+
2
VSS
3
IN-
4
5
oUT
VDD
R733
10k
R401
1k
R432 470k
C783
1u
C741
10u
R238
150k
D204
HVC131
R226
4.7k
C784
2.2u
D701
KDR731
C770
1000p
C430
2p
R793 1.8k
C750 100p
C226
1000p
C762
1000p
C276
6p
R232
56k
C1
1000p
R405
270k
C626
1000p
C461
1000p
C719
1000p
C8
0.01u
C787
0.1u
R708
1k
C466
1000p
R207
0
D200
UDZW5.1(B)
C601
1u
C607
1u
R781
6.8k
R732
68
R247
100k
KTC4075E(Y,GR)
Q4
C440
3p
TXD
C18
1000p
C734
10u
R442
470k
C218
0.1u
C737
1u
C436
2p
C789
100p
C468
0.1u
R422
4.7k
R215
470
R615
390k
R235
1.8k
C481
33p
R785
2.7k
C210
0.22u
R 2 7
1 0 k
R415
100
C616
1000p
R436
100k
R2
10k
C718
0.1u
C418 0.01u
R421
100
C758
4.7u
R757
47k
C710 1000p
C768 2.2u
C767 2.2u
C605
1u
C416
10u
F600
D703
MC2850
IC604
MM1856A33N
1
2
VIN
GND
3 CoNT
4 NC
5
VoUT
C769
0.47u
R249
270
C603
1u
C757
22u
C225
1000p
R231 0.39
L212
X700
19.200MHz
L78-1434-05
Q707
UPA672T-A
C805
1000p
C460
1p
R213
22
CP27
470kX2
C80 22p
C409
82p
L17
R222
0
R610 100k
R815
100
C782
1000p
C259
12p
R810
330k
C483
20p
S601
R607 100k
C402
33p
C220
18p
R429
0
C742
1000p
IC705
CD686AQ3
1
EPSI
2
EPSCLK
3
EPSo
4
EPSCSN
5
BooTEN1
6
BooTEN2
7
DVSS1
8
IRQN
9
VDEC9
10
GPIo1
11
GPIoA
12
GPIoB
13
SYSCLoCK1
14
DVSS2
15
GPIo2
16
DISC
17
DISCFB
18
ALT
19
ALTFB
20
MICFB
21
MIC
22
AVSS1
23
MoD1
24
MoD2
25
VBIAS
26
AUDIooUT
27
AUXADC1
28
AUXADC2
29
AUXADC3
30
AUXADC4
31
AVDD
32
AUXDAC1
33
AUXDAC2
34
AVSS2
35
AUXDAC3
36
AUXDAC4
37
DVSS3
38
VDEC2
39
XTAL/CLoCK
XTAL/CLoCK
40
XTALN
XTALN
XTAL/CLoCK
XTALN
41
DVDD
42
CoMMANDDATA
43
REPLYDATA
44
NC
45
DVSS4
46
SERIALCLoCK
47
SYSCLoCK2
48
CSN
L700
L701
C700
1000p
C400
0.1u
R746
10k
R240
4.7
R439 150k
CF401
L72-0973-05
R614
820k
R603
100
C628
1000p
C625
1000p
C620
1000p
S602
S603
C724
0.01u
C720
0.01u
R710
1k
R726
1k
R715
1k
CP21
47kX2
CP20 47kX2
C711
1000p
R712
47k
R724
47k
IC2
MB15E03SL-E1
1
oSCIN
2
oSCoUT
3
VP
4
VCC
5
Do
6
GND
7
XFIN
8
FIN
9
10 DATA
11
12 PS
13
14 LD/FoUT
15
CLoCK
LE
ZC
P
16 R
R 1 3
1 0
L 2
C22
1000p
C23
0.01u
C21
1000p
C17
0.01u
R12
4.7k
C14
0.1u
C9
100p
C13
100p
C6
100p
2SB1132(Q,R)
Q714
CP28
10kX3
C785
2.2u
R800
18k
R804
120k
C792 100p
C786
0.22u
C791
0.1u
R807
18k
R803
390
R805
10k
C801
1u
C794
0.1u
R809
10k
R813
68k
C795
1u
C N 6 0 0
1
2
3
4
5
6
7
8
9
1 0
L221
L222 L223
R257
0
C447
1000p
L408 150n
L409 270n
L406
220n
L400
180n
L401
100n
L405
56n
L407
56n
L420
22n
BU7465HFV
IC708
1
2
3
IN+
VSS
IN-
4
oUT
5
VDD
IC704
BU7465HFV
1 2 3
IN+ VSS IN-
4
oUT
5
VDD
C807
0.1u
IC709
NJU7089KV1
1
2
3 +IN
4
SD
BYPASS
-IN
5
oUTA
6
V+
7
GND
8
oUTB
C38
1000p
C58
6p
L8
10u
L15
39n
C77 0.1u
C84
4p
L4
12n
R19
560
R43 10k
C26 2.2u
L25
100n
D5
1SV323F
MCH3914(8)-H
Q5
D3
1SV323F
L21 10u
CV(A)
C57 13p
R36
390
R41
1k
L11
27u
2SC5636
Q9
L24
100n
C73
5p
C72
33p
L10
10u
C68
1p
R46
10k
R40
150k
D13
HVC350B
C45
1000p
C76
1000p
R22 10k
L7
10u
C35
9p
C 6 6
0 . 5 p
D704
HSC277
C64
0.01u
C71
1000p
C47
82p
R20
0
R37
22
R30
33k
C90 30p
C48
8p
C25
0.22u
D8
1SV323F
D11
HVC375B-E
C49
11p
D705
HSC277
D9
1SV323F
R 3 8
2 2
L3
MCH3914(7)-H
Q6 R44
47
L23
10u
C46
68p
R18 680
2SC5636
Q2
R23
47
L9
10n
R49 15k
C54
0.75p
2SC5636
Q10
L42
22n
D12
HVC375B-E
C61
5p
R35
270
C65
0.01u
C32
470p
C30
270p
C40
7p
R50
15k
L41
18n
L13 3.3u
R17
560
C82
6p
C60 15p
C75
1000p
R28
680
R16
560
L43 22n
D7
1SV325F
C41
20p
L40 10n
D4
1SV325F
L14
3.3u
C74
15p
R45
270
C83
33p
L16 22n
C79
22p
L26
15n
C78
22p
C36 0.1u
R822
220k
R824
1k
L702
82n
C808
47u
C809
47u
C253
56p
X1
19.2MHz
L77-3055-05
1 VCoNT
2 GND
3
oUTPUT
4
VCC
Q605
LTC014EEBFS8
Q600
LTC014EEBFS8
Q604
LTC014EEBFS8
Q401
LTC014EEBFS8
Q402 LTA044EEBFS8
KTC4075E(Y,GR)
Q701
Q203
LTC014TEBFS8
Q207
LTC014EEBFS8
Q210
LTA044EEBFS8
Q708
LTC014EEBFS8
Q709
LTC014EEBFS8
Q711
LTC014EEBFS8
Q712
LTC044EEBFS8
C810
24p
R448
0
R825 100k
D600
RB521S-30
D1
KDS160E-P
D10
KDS160E-P
KTK5132E-P
Q205
D702
1SS372F
R828
47k
C814
0.1u
SSM3K127TUT
Q603
C29
0.047u
XF400
L71-0683-05
38.85MHz
R826
47k
C815
1u
KTK5132E-P
Q3
Q7
SSM6L36TU-F
Q601
SSM6L36TU-F
Q602
50CC
50M
SB
SSM6L36TU-F
IC700
EX25064ATA00A
1
2
3
4
S
Q
W
VSS
5
D
6
C
7
HoLD
8
VCC
CP24
TX-RX UNIT(X57-8310-10)
PTT/RXD
MICIN
MICO
OPTDET
50V
AE
TXD
NC
NC
SPO
VOLIN
MOD2
50T
19.2MHz
+B
PTT/RXD
33M
Freq
CVADJ
TXD
50M
HSDENC
MOD1
INSPSW
CML_IRQ
DICSW
APCSW
TX/RX
TASIS TASIS
WIDE/NARROW
50V
33M
SB
LSDO
DISCFB
50R
50C
VLO VLO
Do
VOLIN
MOD2
50T
19.2MHz
+B
PTT/RXD
33M
50C
Freq
CVADJ
TXD
50M
HSDENC
MOD1
CML_IRQ
DICSW
+B
APCSW
50T
50T
PC
50R
PTT/RXD
SB
BPF1
33M
TXD
50M
INTSPSW
MIC
50V
50M
DICSW
1LO 1LO
+B
APCSW
5TC 5RC
VOLOUT
VOLOUT
50
V
C
R 775
0
100X4
PTT/RXD1
PTT/RXD1
SDATA_O_CML SDATA_O_CML
SDATA_I_CML SDATA_I_CML
SCLK_CML SCLK_CML
CML_CSN CML_CSN
PTT/RXD1
PTT/RXD1
1kX2
DC AMP(FRQ/MOD)
PLL system
DC AMP(CV)
DC AMP(APC)
IF system
Voltage detector(INT)
Voltage regulator(50M)
Voltage regulator(50C)
Voltage regulator(50V)
Voltage regulator(33M)
Voltage
detector
(reset)
EEPROM
MCU
Voltage regulator(33B)
DC AMP(BPF1 tune)
Baseband system
DC AMP(VOX)
AF power AMP(EXT)
AF AMP
AF power AMP
(INT)
DC SW(MOD)
Fin doubler
Q1 conrol
Ripple
fillter
RX-VCO
TX-VCO
Q8 control
T/R VCO DC SW
Buffer AMP
RF AMP
Pre-AMP
Dischage SW
APC control SW
Drive AMP
DC SW(APC)
Final AMP
SSM3K15AFS-F
Q209
DC SW(Power control)
DC SW(Power control)
Doubler(2nd LO)
W/N SW
Q402 control
1st IF AMP
1st mixer
RX RF AMP
DC SW(BUSY-LED)
DC SW(50T)
DC SW(50R)
DC SW(MIN-VOL)
DC SW(TX,BLUE-LED)
DC SW(TX,BLUE-LED)
DC SW(33MS)
Beat shift SW
KTC4075E(Y,GR)
Q702
Beat shift SW
Level shift(TXD)
KTC4075E(Y,GR)
Q704
MIC mute SW
MIC AGC AMP
2SA1586(Y,GR)F
Q706
MIC AGC AMP
Level SW(RXD)
DC SW(EXT-PTT)
Q710 control
DC SW
(IC707 SB)
Q715 control
Pop noise mute control
DC SW(IC709 SB)
Q715
UMG3N
Q714 control
GREEN(BUSY)
RED(TX) BLUE
Speed up(PLL UL)
TX VCO
tune
D3,D5,D8,D9
RX VCO tune
D4,D7
Speed up
TX
assist
RX assist
MOD
T/R SW
T/R SW
Over voltage protection
ANT SW
D201,D202
ANT
ANT SW
D203,D204
RX BPF
tuning
D401,D402
RX BPF tuning
D403,D404
Voltage drop
Voltage prevention
VR1
S1
Over voltage
protection
AF detector(MIC)
D700,D701
AF detector
(VOX)
Limiter
PLL Fin BPF SW
D704,D705
2.5A
1A
BATTERY
7.5V
C277
3p
AF SW(EXT SP)
AF SW(EXT SP)
EMPTT
T:0V
R:3.3V
5.0V
T:0.8V
R:0V
H:2.2V
L:1.3V
3.3V
5.0V
3.3V
3.3V
3.2V
3.3V
R:0V T:3.3V
7.5V
7.4V
5.0V
1.4V
T:4.9V
R:0V
T:3.3V
R:0V
R:4.9V
T:0V
R:3.2V
T:0V
R:0.6V
T:0V
R:4.9V
T:0.0V
R:4.9V
T:0.0V
R:0V
T:4.9V
R:0V
T:1.0V
3.0V
3.2V
5.0V
5.0V
3.5V
3.3V
3.3V
7.2V
ON:0V
T:0V
R:4.9V
7.4V
3.3V
50CC ON:
3.3V
50VC ON:
ON:3.3V
BLUE LED
BUSY LED
3.3V
7.4V
5.0V
5.0V
5.0V
3.2V
3.3V
3.3V
R:3.3V T:0V
R:0V
T:4.2V
R:0V
T:3.3V
4.5V
W:3.3V
N:0V
R:0V
7.5V
H:3.7V
L:2.2V
R:0V
T:4.9V
4.2V
3.3V
OPTDET
Low &
Mute Off:3.3V
Mute On:0V
0.7V
0.7V
ON:3.3V
Beat shift
Off:0V
R:3.0V
T:0V
5V
L:0.8V
H:1.4V
T:1.8V
R:0V
T:0V
R:4.2V
T:2.0V
R:2.1V
0.3V
1.67V
OPTDET
Low &
Mute Off:7.4V
Mute On:0V
OPTDET
High &
Mute Off:3.3V
Mute On:0V
OPTDET Low &
Mute Off:3.2V
Mute On:0V
OPTDET
without 2-pin Jack:3.2V(High)
insert 2-pin Jack:0V(Low)
OPTDET High &
Mute Off:5.5V
Mute On:0V
OPTDET High &
Mute Off:3.3V
Mute On:0V
OPTDET High &
Mute Off:5.5V
Mute On:0V
OPTDET High &
Mute Off:2.7V
Mute On:0V
OPTDET High &
Mute Off:2.7V
Mute On:0V
3.3V
7.4V
R:3.2V
T:0V
R:4.2V
T:0.0V
5.0V