Kenwood NXR-1800 Service Manual page 12

2.4.2 Adding the RSSI or Reset Terminal on the CONTROL I/O (D-SUB 25-pin) Connector
The configuration for pin 1 of the CONTROL I/O (D-SUB 25-pin) connector can be changed to allow it to supply the power source for
RSSI.
Follow the procedure shown below to change the configuration.
Case 1: Add the RSSI.
(1) Remove the board.
(2) Join the circular soldering pads by soldering. (TL501 and TL502)
Case 2: Add the Reset.
(1) Remove the board.
(2) Mount the part (part number: RK73GB2A102J) on R431 of the board.
2.4.3 Changing CONTROL I/O (D-SUB 25-pin) connector (pin 4, pin 5) configuration
The AUX Input Port (pins 4 and 5) on the CONTROL I/O (D-SUB 25-pin) connector can be used as the CTS port and RTS port.
Follow the procedure shown below to change the configuration.
(1) Remove the board.
(2) Remove the R557 chip jumpers and solder to R555.
(3) Remove the R558 chip jumpers and solder to R556.
Connector
Signal name
Pin Number
4 AI1
CTS
5 AI2
RTS
1-12 (No.RA094<Rev.002>)
Side A
IC600
C359
TL902 C400 TL672
C684
TL901 R670
IC600 R351 20M_RF L732
TL674 C681 TL675 TL673 C683
D300 C360 TL385 C670
C671
R616 20M_X C682 C672
R661 C673 L738
C674
C675
IC602
C603 TL900 R678
C677
TL16 R680
C606 A_DOUT1 C676
R606 R633
TL374 TL372 TL370
R607 IC602 D606 A_FS
R642 D607 R631 R632 TL373 CV
R634 D608 R638 R636 TL371 TL670 TL671 TL712
D609 A_DIN1 A_DOUT2
D610 C612 R643 R635 TL903
C613 R641 R640
C614 A_SCLK C686
C609 C611 SSI_FS
C610 A_MCLK
IC671
C616 TL701 SPI_DoUT E2001
IC601 A_DIN2 R685 C685
R604 TL702 C763 SSI_DT
C602 R648 R686 C762
R605 TL703 C761
R637 R113 R31 C760 SSI_CLK
R112 TL12 TL704
C59 TL13 TL413
C69 TL707 C766 SPI_EN
R25 R108 IC5 C767 C1096 Q1008 C1084 L1024
TL705 C769 SPI_DT C1089
R107 R29 R1065 C1075
R109 C62 TL706 SPI_CLK
TL15 L1037 C1076
Q4014 R1073
RTC IC4
TL708 L1032
R600 R1010 C1017
R601 R110 X4 C4070 R4051 R1089
R33 C4071 Q1003 R1011 E2001 R1100
X4 R1090
C65 L1051
C425
TL415 R481
R1030
R1061
TL421 TL414 C1037 Q1002
R338 C347 C422 TL422 C417 IC4006 R1036
C330 TL416
R602 TL423 TL424 TL1005 R1037
C331 R366 C435 C1038 R1005
R603 C346 R367
C317 A1 A2 IC4005 TL1005
C410
TL28 C445 R4085
C337 C440 C444 C433 C4076
C421 C419
C341 C430 C4074
C441 C434 C420 C429 C4075 CN15
TL110 TL30 R4084
C351 C442
C325 C437 TL410
C431 A500
C438 C428
Q4015
R610 C418 C415 RST_FP
Q602 C122 R360 R337 R931
R611
Q603 C113 TL530
C119 TL72
C114 TL78
C108
C112 IC500
TL111 TL108
C111 R105
C171 R106
C120 C220 C153 C224
C182
C191 C104 TL77
C167 C196 TL107
TL112 C154 TL18
C173 C197 C194 C170 TL106 TL420
TL70 R465 R488
C136 TL19 C132
C164 C141 TL109 C131 C2099
C144 TL22 R121 R466
TL29 C143 C129 R134 C526 IC2001
C130 R135 C133 R489
TL27 C204 C163 TL21 R120
R538
C175 R133 C523 R2090
C106 C174 R132 E2000
C110 C522 C525
TL14
C101 A3 TL426 CN3017
C107
TL103 TL522 TL520
TL425
TL26 TL23 TL31
C201 A4 TL523 TL521 VS1-4 C2096 C2049
Q2002 C2035 L2004
R609 TL25 TL24
TL100 Q3066 TL428 R2058 R2029
C2023
R2042 C2031
S4000 TL532 B2B1 L2018
TL533 TL419 TL417 TL411
B4 B3 R2002 C2012
R4049 R525 D556 B5 R2034 R2001
R4050 R566 TL412 TL418 E2000 R2100
C4053 R565 R526 R3601 R2005
S4000 C4051 D555 D557 R3178
R4047 R564 TL2004 L2051
D554 R3179 Q3073
R563 D1 R2 R2065 C2082
R562 D552 TL4 TL3 TL427 C2080 R2077
R2089 Q4008 C2073 R3062
D553 R561 R524 R2066
D551 R559 R522 1.15VPS2 IC7 1.15VPS1 R3175 R3176 R2027 R2074
D4007 R523 C2075
D550 1.8VLD2
CN10 VDDMPU C2074
R2075 R3064
Q4010 TL17 TL7 TL51 Q3072 R4036
R4043
1.5VPS5
TL20 C29 TL1
C27 VDDSDDR
PWRoN C30 TL2
D4010 R204 C32
Q4018
TL6
R4053 C4054 R259 R300
R4056
TL8 TL11 1.8VLD5_PLL
C51
TL9 1.8VLD3_PHY1
V1_8D C41
C40
TL10 3.3VLD4 IC4003
33USB
TL5
3.3VLD1
CN100
VSDMMC
C3151
CN3006
CN3012 CN3010
C4084
R4091
R4092 R4097 R3163
R4090 C4087 F2 F1
Q4022 C3195
F2 F1 R3238 R3164
R3165
R4095 R3241
IC4002 7.5V
J7 IC4100
C3199
TL4002
R4159
C4047 C4165 L4101 C3198
C4159 C3204
R4157 C4166 R3162
IC251 3.3V C4046 C4164 C3197 C3205
R4164 R3244 C3196 R3160
R3247
C4048
E2002 R3245 R3161
C4167
C4156
C4040 CN3013
L4102 CN3011
C4038
L4001 5V
TL4001 C4039
E2002
D4003
J9 D4003
IC3030
Installing
RK73GB2A000J
R557 Default
R555 RS-232C
R558 Default
R556 RS-232C
TL501
TL501
C545
L451
R479
R486
D530
R557
R426
C553
R558
R3259
J7C-0362-10
D528
TL711 R3259
D750
XC1-329
TL709
TL710
CN3002
R428
J4
R482 C545
C381 R479 L451
CP1000 IC74 IC79 TL501 TL502
R486
C1018 C1020
IC74 IC79
C1021 C1019 IC1001
C384 C403 C378 R459
R1012
R683
IC1001 C687 R410
L1050 IC75
R1009
C1031 IC85 C383
C399 R409 R457
R1028 C595 D530
R377 R543
C1004 Q1000 R1018 IC85 IC75 R557
R1007
R426
C1008 TL525 C553 R427
C1003 C564 R558
R1022 R1020 TL529
R1017 D528
R428
C562
R463 C565
IC84 C567 C566
R543 R544
TL524 R464
R461 R544
R1001 TL528 R467 R462
R1000 C1006 IC83 R468
R469 R545
C1007 R480 R470
C570
IC82 R471 C568 C569 R546
R472
R473
R547
R474
R1002 R475
R476 TL531
R477 R548
R478
C3266
C3267 R545
R3217
R5500
E-00
R3216
E-01 R5501
IC3010
CN3003
CP2000
R2015 R2016
R2032
C2001 Q2000 R546
C2101
C2002 R2017 R2019 R2035
C2011
C2016
R2000
IC2000 5V_TX
L2050
R2003
R3263
C3072
IC2000 R3263
C3074 R4034 R4037
TL4003 R4038
C3073 C4034
R4039
Q4006
R547
IC4001
R4021 R4022
Q4020
R4063
C4005
Q4020
F4000
R4155
+B
R4013
R4154 Q4004
C4153
C4010 C4009 F4000
C4006
C4008 R4012
C4152
R5004 D4152
R548
R4151 IC4010
C5000 R5002
IC4010
R5000 C4019
D3079
R3109
R3113 C4018
TL4000 C4013 R3127
C4012 C3112 C3121
TL4000 12V R3272
R3189 R3270
IC3025 IC3024 C3497
R3602
R3222
R3111
R3092
IC3026 R3171
R3125 C3110
C3122
R3124 R3131
C3488 R3466 R3151 R3139 IC3025 IC C3480
R3462 C3495
3024
C3481
Q3061
IC3022
C3487
Q3060 R3460
R3461
C3482
R3458 R3459
IC3022
C3486
CN3005
NOTE
TL502
J4
TL502
R431
R459
R457
R427
TL531