Radio Shack PRO-197 Service Manual
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Radio Shack PRO-197 Service Manual

Digital trunking base/mobile scanner
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PRO-197
Digital Trunking Base/Mobile Scanner
Catalog Number: 20-197
CONTENTS
Page
Specifications .................................................................................................................................................... 2
Block Diagram ................................................................................................................................................... 4
Alignment and Adjustment ................................................................................................................................ 5
Troubleshooting ............................................................................................................................................... 10
Printed Circuit Board ....................................................................................................................................... 15
Wiring Diagram ................................................................................................................................................ 20
Exploded View ................................................................................................................................................. 21
Mechanical Parts List ....................................................................................................................................... 22
Electrical Parts List .......................................................................................................................................... 24
Semiconductor Lead Identification ................................................................................................................. 66
Microprocessor (IC306) Port Format ............................................................................................................... 72
Schematic Diagram ......................................................................................................................................... 73
© 2008 RadioShack Corporation
All Rights Reserved.
RadioShack is a registered trademark used by RadioShack Corporation.

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  • Page 1: Table Of Contents

    PRO-197 Digital Trunking Base/Mobile Scanner Catalog Number: 20-197 CONTENTS Page Specifications ..............................2 Block Diagram ..............................4 Alignment and Adjustment ..........................5 Troubleshooting ............................... 10 Printed Circuit Board ............................15 Wiring Diagram ..............................20 Exploded View ..............................21 Mechanical Parts List ............................22 Electrical Parts List ............................

  • Page 2: Specifications

    SPECIFICATIONS Frequency Coverage 25.000-26.960 MHz 10 kHz steps (AM) 26.965-27.405 MHz 10 kHz steps (AM) 27.410-29.505 MHz 5 kHz steps (AM) 29.510-29.700 MHz 5 kHz steps (FM) 29.710-49.830 MHz 10 kHz steps (FM) 49.835-54.000 MHz 5 kHz steps (FM) 108.000-136.99166 MHz 8.33 kHz steps (AM) 137.000-137.995 MHz 5 kHz steps (FM)
  • Page 3 Unit Nominal Limit Signal Stalker II sensitivity at 450 MHz Sensitivity FM: (S+N)/N=20 dB 25-54 MHz μV Dev.: 3 kHz at 1 kHz 108-136.99166 MHz μV 137-174 MHz μV 216.0025-224.995 MHz μV 225-299.99375 MHz μV 300-405.9875 MHz μV 406-512 MHz μV 764-960 MHz μV...

  • Page 4: Block Diagram

    BLOCK DIAGRAM 25-54MHz Switching 108-225MHz Noise Amp 225-406MHz 1st IF 2nd IF IC6a 406-512MHz RF Amp 21.4MHz (380.650-380.86875MHz) 764-1300MHz Q3,Q4 XF 1 XF 2 3rd IF Amp Noise Amp SQUELCH Attenuator 1st Mix 2nd Mix 2nd IF Amp 3rd Local Mixer D1,D2 Quadrature Detector RF Amp...

  • Page 5: Alignment And Adjustment

    ALIGNMENT AND ADJUSTMENT ALIGNMENT AND TEST POINT TP6 TP4 TP5 Main PCB ALIGNMENT PREPARATION Test Equipment Required Oscilloscope DC SSVM FM signal generator Frequency counter (800 MHz) Notes: Use non-metallic tuning tools. The test equipment and receiver should be warmed up for at least 10 minutes before proceeding with alignment. The signal level from the generator should be kept as low as possible to obtain a usable output.
  • Page 6 ALIGNMENT PROCEDURES PLL2 VCO Alignment s t l y l l PLL1 VCO1 Alignment s t l . s t ) . l PLL1 VCO2 Alignment s t l . s t ) . l s t l s t l s t l s t l s t l...
  • Page 7 Adjustment of Coils L23, L24, and L26 Each coil should be adjusted carefully by changing the pitch of the coil little by little using a non-metallic tuning non-metallic tool as shown in Figure 3. tuning tool Coil Increase the pitch of the coil when the measured volt- age at TP2 or TP3 is higher than the voltage listed in Figure 3 Table 2 for the PLL2 VCO alignment, PLL1 VCO1 align-...
  • Page 8 3rd Local Alignment FM Singal Generator Frequency Counter Unit Under Test Figure 6 IF (380.8 MHz) Trap Adjustment l i c t i s i v i . y t Oscilloscope ANT. Jack Headphone FM Signal Jack Unit Generator Under Test Figure 7...
  • Page 9 Signal Meter Alignment s t l DC SSVM ANT. Jack FM Signal Unit Generator Under Test Figure 8...

  • Page 10: Troubleshooting

    TROUBLESHOOTING Reception Check Does display Power ON Proceed to DSP freeze showing Waiting section (Boot for DSP or DSP section) check. Loder ..Does the display work properly? Is EEPROM check Defective IC301. program OK? Is the display Defective IC307, LCD normal? and/or associated EEPROM check program...
  • Page 11 Audio Section No audio there any audio at pin 5 of IC11? there any audio at IC8 Pin 1? Defective IC7, IC8, IC9 and/or Defective IC10, Q32 and/or associated circuits. associated circuit. Does 13.8 V exist at IC11 pin 2? Defective SW201 and/or R167.
  • Page 12 Microprocessor Check Power ON. Does the display work properly? Does the key entry work properly? Does 3.3 volts exist at IC307 pin 14 and 60? Defective key contact or CPU Pin 47-52, Pin 55- 59, Pin 61. Defective IC12 and/or associated circuit.
  • Page 13 DSP Section (Boot Section) Power ON Does the scanner's display freeze showing Waiting for DSP? Does display freeze showing DSP Loader..DSP Boot: FX .X Defective IC313, IC311, and/or associated at power on? circuits. DSP boot section is OK. When IC311 (Flash Memory) is replaced, a one which is loaded with the software must be used.
  • Page 14 DSP Section (Digital Audio, etc.) Receive a frequency with FM mode, in tune mode. (Tune mode turns on digital decode.) Is voltage okay on IC313-pin 2 (3.3 V), and Defective IC309, or LC305. IC313-pin 29 (1.8 V). Is receive Defective IC8, R339, C407 audio present on IC313 and/or associated circuit.

  • Page 22: Mechanical Parts List

    MECHANICAL PARTS LIST Ref. No. Description RS Part No. Part No. Adaptor, AC GA-04D-1100B Antenna, Telescopic JF-52149(G96-001/C) Assembly, Cabinet, Outer (Non-Repairable) GA-05D-1540 Cabinet, Outer GR-07B-2310 Himelon, Outer Cabinet GR-07D-2400 or GE-04D-2430 Cushion, Speaker GR-07D-2580 or GE-06D-3210 Assembly, Cable, DC W/2A Fuse GA-04D-1060 Assembly, Cabinet, Inner, Bottom (Non=Repariable) GA-04D-2200...
  • Page 23 Ref. No. Description RS Part No. Part No. Hardware Kit #0714(B) Screw, Binding Head Machine, 2.6x5 BM 2.6x5 (Ni) Screw, Binding Head Machine, 2.6x5 BM 2.6x5 BLK Screw, Counter Sunk Head Machine 2.6x6 CM 2.6x6 (Ni) Screw, Pan Head P Tight 2.6x6 P TIGHT 2.6x6 (Ni) Screw, Pan Head Machine 3x6 PM 3x6 (Ni)

  • Page 24: Electrical Parts List

    ELECTRICAL PARTS LIST Ref. No. Description RS Part No. Mfr’s Part No. Assembly PCB, Main GA-08D-0220 Consists of the following: Capacitors Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D Ceramic 3 pF...
  • Page 25 Ref. No. Description RS Part No. Mfr’s Part No. Ceramic 0.047 μF 50 V ±10% ECJ1VB1H473K or 25 V or CM105X7R473K25AT or GRM188R71E473KA01D Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D Ceramic 5 pF 50 V ±0.25pF ECJ0EC1H050C or CM05CH5R0C50AH or GRM1555C1H5R0CZ01D...
  • Page 26 Ref. No. Description RS Part No. Mfr’s Part No. Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D Ceramic 0.047 μF 50 V ±10% ECJ1VB1H473K or 25 V or CM105X7R473K25AT or GRM188R71E473KA01D Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D...
  • Page 27 Ref. No. Description RS Part No. Mfr’s Part No. Electrolytic 33 μF 10 V ±20% USR1A330MDD or 1AUTCMS330M0 or 1AUTCMS330M Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D Ceramic 0.001 μF...
  • Page 28 Ref. No. Description RS Part No. Mfr’s Part No. Ceramic 0.047 μF 50 V ±10% ECJ1VB1H473K or 25 V or CM105X7R473K25AT or GRM188R71E473KA01D Ceramic 56 pF 50 V ±5% ECJ1VC1H560J or CM105CH560J50AT or GRM1885C1H560JA01D Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM188R71H102KA01D...
  • Page 29 Ref. No. Description RS Part No. Mfr’s Part No. C104 Ceramic 2 pF 50 V ±0.25pF ECJ1VC1H020C or CM105CK2R0C50AT or GRM1885C1H2R0CZ01D C105 Ceramic 0.001 μF 50 V ±5% ECJ1VC1H102J or CM105CH102J50AT or GRM1885C1H102JA01D C106 Ceramic 100 pF 50 V ±5% ECJ1VC1H101J or CM105CH101J50AT or GRM1885C1H101JA01D...
  • Page 30 Ref. No. Description RS Part No. Mfr’s Part No. C126 Ceramic 47 pF 50 V ±5% ECJ1VC1H470J or CM105CH470J50AT or GRM1885C1H470JA01D C127 Ceramic 10 pF 50 V ±0.5pF ECJ1VC1H100D or ±5% or CM105CH100J50AT or GRM1885C1H100JA01D C128 Ceramic 10 pF 50 V ±0.5pF ECJ1VC1H100D or ±5%...
  • Page 31 Ref. No. Description RS Part No. Mfr’s Part No. C148 Ceramic 82 pF 50 V ±5% ECJ1VC1H820J or CM105CH820J50AT or GRM1885C1H820JA01D C149 Ceramic 0.01 μF 50 V ±10% ECJ1VB1H103K or CM105X7R103K50AT or GRM188R71H103KA01D C150 Ceramic 0.01 μF 50 V ±10% ECJ1VB1H103K or CM105X7R103K50AT or GRM188R71H103KA01D...
  • Page 32 Ref. No. Description RS Part No. Mfr’s Part No. C169 Ceramic 220 pF 50 V ±5% ECJ1VC1H221J or CM105CH221J50AT or GRM1885C1H221JA01D C170 Ceramic 0.0047 μF 50 V ±10% ECJ1VB1H472K or CM105X7R472K50AT or GRM188R71H472KA01D C171 Ceramic 0.022 μF 50 V ±10% ECJ1VB1H223K or 25 V or CM105X7R223K25AT...
  • Page 33 Ref. No. Description RS Part No. Mfr’s Part No. C190 Electrolytic 1000 μF 25 V ±20% URU1E102MHD or SRG25VB1000MK15 C191 Electrolytic 10 μF 16 V ±20% USA1C100MDD or 1CUTCM100M0 or 1CUTCM100M C192 Polyester 0.1 μF 50 V ±10% AMZ104K50V or QYX1H104K C193 Ceramic 0.22 μF...
  • Page 34 Ref. No. Description RS Part No. Mfr’s Part No. Ceramic Filters 455 kHz CFULA455KF1Y-B0 455 kHz SFPS455H or LT455HTU Connectors 26-pin, Female 52089-2610 or 52089-2619 3-pin, Male PI22B03M 3-pin, Male PI22B03M 2-pin, Male PI22B02M 4-pin, Male PI22B04M 2-pin, Male PI22A02M Diodes HVU131-TR-F-E Marked P1...
  • Page 35 Ref. No. Description RS Part No. Mfr’s Part No. RL1N4002-F RL1N4002-F or S5566B(Q) or S5566B(Q) or RL1N4002 or RL1N4002 or S5566B or S5566B RL1N4002-F RL1N4002-F or S5566B(Q) or S5566B(Q) or RL1N4002 or RL1N4002 or S5566B or S5566B RL1N4002-F RL1N4002-F or S5566B(Q) or S5566B(Q) or RL1N4002 or RL1N4002...
  • Page 36 Ref. No. Description RS Part No. Mfr’s Part No. Jumper, RK73Z2ATTD or CJ21-000T or MCR10EZHJ000 Jumper, RK73Z2ATTD or CJ21-000T or MCR10EZHJ000 Jumper, RK73Z2ATTD or CJ21-000T or MCR10EZHJ000 Jumper, RK73Z2ATTD or CJ21-000T or MCR10EZHJ000 Jumper, RK73Z2ATTD or CJ21-000T or MCR10EZHJ000 Jumper RK73Z1JTTD or CR10-000-T or MCR03EZHJ000...
  • Page 37 Ref. No. Description RS Part No. Mfr’s Part No. 2LNO-256(F) Choke GR-D835 Choke 10 μH LAL02VD100K or AL02TB100K Choke 5SSO-393 Choke 100 μH LAL02VD101K or AL02TB101K Choke 3B037 or 3B037T Transistors DTA114EUA-T106 Marked 14 DTA114EUA-T106 UMD2N-TR Marked D2 UMD2N-TR 2SC4094(R38)-T2B-A Marked R38 2SC4094(R38)-T2B-A or 2SC4094(R38)-T2B...
  • Page 38 Ref. No. Description RS Part No. Mfr’s Part No. 2SK880(Y)-TE85L Marked XY 2SK880(Y)-TE85L or 2SK880(Y)-(TE85L,F) or 2SK880(Y)-(TE85L,F) 2SC4116-GR(TE85L,F) Marked LG 2SC4116-GR(TE85L,F) or 2SC4116(GR)-TE85L or 2SC4116(GR)-TE85L MT3S16U-(TE85L,F) Marked T4 MT3S16U-(TE85L,F) or MT3S16U-TE85L or MT3S16U-TE85L or KTC4082 or KTC4082 or 2SC4251-TE85L or 2SC4251-TE85L or 2SC4251 (TE85L,F) or 2SC4251 (TE85L,F) 2SC4251(TE85L,F)
  • Page 39 Ref. No. Description RS Part No. Mfr’s Part No. Chip, Metal Glaze 220 ohm ±5% 1/10 W RK73B1JTTD221J or CR10-221J-T or MCR03EZHJ221 Chip, Metal Glaze 2.2 kohm ±5% 1/10 W RK73B1JTTD222J or CR10-222J-T or MCR03EZHJ222 Chip, Metal Glaze 2.2 kohm ±5% 1/16 W RK73B1ETTP222J...
  • Page 40 Ref. No. Description RS Part No. Mfr’s Part No. Chip, Metal Glaze 33 kohm ±5% 1/16 W RK73B1ETTP333J or CR05-333J-H or ERJ2GEJ333X Chip, Metal Glaze 220 ohm ±5% 1/10 W RK73B1JTTD221J or CR10-221J-T or MCR03EZHJ221 Chip, Metal Glaze 10 kohm ±5% 1/10 W RK73B1JTTD103J...
  • Page 41 Ref. No. Description RS Part No. Mfr’s Part No. Chip, Metal Glaze 10 kohm ±5% 1/10 W RK73B1JTTD103J or CR10-103J-T or MCR03EZHJ103 Chip, Metal Glaze 100 kohm ±5% 1/10 W RK73B1JTTD104J or CR10-104J-T or MCR03EZHJ104 Chip, Metal Glaze 10 kohm ±5% 1/10 W RK73B1JTTD103J...
  • Page 42 Ref. No. Description RS Part No. Mfr’s Part No. Chip, Metal Glaze 330 ohm ±5% 1/10 W RK73B1JTTD331J or CR10-331J-T or MCR03EZHJ331 Chip, Metal Glaze 47 ohm ±5% 1/10 W RK73B1JTTD470J or CR10-470J-T or MCR03EZHJ470 Chip, Metal Glaze 10 kohm ±5% 1/10 W RK73B1JTTD103J...
  • Page 43 Ref. No. Description RS Part No. Mfr’s Part No. R100 Chip, Metal Glaze 1.5 kohm ±5% 1/10 W RK73B1JTTD152J or CR10-152J-T or MCR03EZHJ152 R101 Chip, Metal Glaze 470 ohm ±5% 1/10 W RK73B1JTTD471J or CR10-471J-T or MCR03EZHJ471 R102 Chip, Metal Glaze 470 ohm ±5% 1/10 W...
  • Page 44 Ref. No. Description RS Part No. Mfr’s Part No. R124 Chip, Metal Glaze 1.5 Mohm ±5% 1/10 W RK73B1JTTD155J or CR10-155J-T or MCR03EZHJ155 R125 Chip, Metal Glaze 1 kohm ±5% 1/10 W RK73B1JTTD102J or CR10-102J-T or MCR03EZHJ102 R126 Chip, Metal Glaze 1 kohm ±5% 1/16 W...
  • Page 45 Ref. No. Description RS Part No. Mfr’s Part No. R145 Chip, Metal Glaze 47 kohm ±5% 1/10 W RK73B1JTTD473J or CR10-473J-T or MCR03EZHJ473 R146 Chip, Metal Glaze 68 kohm ±5% 1/10 W RK73B1JTTD683J or CR10-683J-T or MCR03EZHJ683 R147 Chip, Metal Glaze 100 kohm ±5% 1/10 W...
  • Page 46 Ref. No. Description RS Part No. Mfr’s Part No. R167 Metal Oxide 10 ohm ±5% MOS2CL20A100J R168 Chip, Metal Glaze 100 ohm ±5% 1/10 W RK73B1JTTD101J or CR10-101J-T or MCR03EZHJ101 R169 Chip, Metal Glaze 4.7 kohm ±5% 1/10 W RK73B1JTTD472J or CR10-472J-T or MCR03EZHJ472 R170...
  • Page 47 Ref. No. Description RS Part No. Mfr’s Part No. 47 kohm RH03ADCS4X or PVZ3A473C01R00 or EVM3ESX50BQ4 47 kohm RH03ADCS4X or PVZ3A473C01R00 or EVM3ESX50BQ4 Crystals 12.75 MHz TCXO GR-07D-0661 20.945 MHz GR-00D-3786 Crystal Filters Filter, SAW 380.8 MHz SAFC380MA1F0T-TC05 or SAFCG380MAA0T00R05 21.4 MHz MF21R TR-1-6(3)20-18926 or GE-99D-3293...
  • Page 48 Ref. No. Description RS Part No. Mfr’s Part No. Assembly PCB, Logic GA-08D-0230 Consists of the following: Capacitors C301 Ceramic 0.001 μF 50 V ±10% ECJ0EB1H102K or ±5% or CM05B102J50AH or ±10% or GRM155R71H102KA01D C302 Ceramic 0.001 μF 50 V ±10% ECJ0EB1H102K or ±5%...
  • Page 49 Ref. No. Description RS Part No. Mfr’s Part No. C319 Tantalum 1 μF 10 V ±20% TCP1A105M8R or TESVSP1A105M8R or TEESVP1A105M8R or F921A105MPA C320 Ceramic 0.001 μF 50 V ±10% ECJ0EB1H102K or ±5% or CM05B102J50AH or ±10% or GRM155R71H102KA01D C321 Ceramic 0.1 μF 10 V...
  • Page 50 Ref. No. Description RS Part No. Mfr’s Part No. C336 Ceramic 47 pF 50 V ±5% ECJ0EC1H470J or CM05CH470J50AH or GRM1555C1H470JZ01D C337 Ceramic 47 pF 50 V ±5% ECJ0EC1H470J or CM05CH470J50AH or GRM1555C1H470JZ01D C338 Ceramic 47 pF 50 V ±5% ECJ0EC1H470J or CM05CH470J50AH or GRM1555C1H470JZ01D...
  • Page 51 Ref. No. Description RS Part No. Mfr’s Part No. C356 Tantalum 1 μF 10 V ±20% TCP1A105M8R or TESVSP1A105M8R or TEESVP1A105M8R or F921A105MPA C357 Ceramic 0.047 μF 10 V ±10% ECJ0EB1A473K or ±5% or CM05B473J10AH or ±10% or GRM155R71A473KA01D C358 Ceramic 0.22 μF 10 V...
  • Page 52 Ref. No. Description RS Part No. Mfr’s Part No. C378 Ceramic 0.01 μF 16 V ±10% ECJ0EB1C103K or ±5% or CM05B332J50AH or ±10% or GRM155R71C103KA01D C379 Ceramic 0.01 μF 16 V ±10% ECJ0EB1C103K or ±5% or CM05B103J50AH or ±10% or GRM155R71C103KA01D C380 Ceramic 0.01 μF...
  • Page 53 Ref. No. Description RS Part No. Mfr’s Part No. C394 Ceramic 0.1 μF 10 V ±10% ECJ0EB1A104K or ±5% or CM05B104J10AH or ±10% or GRM155R71A104KA01D or ±5% or CM05X5R104J10AH or CM05X7R104J10AH C395 Ceramic 33 pF 50 V ±5% ECJ0EC1H330J or CM05CH330J50AH or GRM1555C1H330JZ01D C396 Ceramic...
  • Page 54 Ref. No. Description RS Part No. Mfr’s Part No. C409 Ceramic 0.1 μF 10 V ±10% ECJ0EB1A104K or ±5% or CM05B104J10AH or ±10% or GRM155R71A104KA01D or ±5% or CM05X5R104J10AH or CM05X7R104J10AH C410 Ceramic 0.1 μF 10 V ±10% ECJ0EB1A104K or ±5% or CM05B104J10AH or ±10% or GRM155R71A104KA01D...
  • Page 55 Ref. No. Description RS Part No. Mfr’s Part No. Connectors CN301 18-pin, Female 52745-1890 or 52745-1896 CN302 18-pin, Female 2209S-18SG CN303 3-pin, Male PI22A03M Diodes D301 HSC277-TR-F-E HSC277-TR-F-E D302 HSC277-TR-F-E HSC277-TR-F-E D303 1SS357-TPH3 Marked S3 1SS357-TPH3 or 1SS357(TPH3,F) or 1SS357(TPH3,F) D304 1SS357-TPH3 Marked S3...
  • Page 56 Ref. No. Description RS Part No. Mfr’s Part No. LEDs LED301 Orange AlGaInP FY1112H-1-TR(D OR E) LED302 Orange AlGaInP FY1112H-1-TR(D OR E) LED303 Orange AlGaInP FY1112H-1-TR(D OR E) Transistors Q301 DTC114YUA-T106 Marked 64 DTC114YUA-T106 Q302 IMD10A-T108 Marked D10 IMD10A-T108 Q303 IMD10A-T108 Marked D10 IMD10A-T108...
  • Page 57 Ref. No. Description RS Part No. Mfr’s Part No. R316 Chip, Metal Glaze 20 kohm ±5% 1/16 W RK73B1ETTP203J or CR05-203J-H or ERJ2GEJ203X R317 Chip, Metal Glaze 4.7 kohm ±5% 1/16 W RK73B1ETTP472J or CR05-472J-H or ERJ2GEJ472X R318 Chip, Metal Glaze 1 Mohm ±5% 1/16 W...
  • Page 58 Ref. No. Description RS Part No. Mfr’s Part No. R338 Chip, Metal Glaze 22 kohm ±5% 1/16 W RK73B1ETTP223J or CR05-223J-H or ERJ2GEJ223X R339 Chip, Metal Glaze 1 kohm ±5% 1/16 W RK73B1RTTP102J or CR05-102J-H or ERJ2GEJ102X R340 Chip, Metal Glaze 1 kohm ±5% 1/16 W...
  • Page 59 Ref. No. Description RS Part No. Mfr’s Part No. R360 Chip, Metal Glaze 1 Mohm ±5% 1/16 W RK73B1ETTP105J or CR05-105J-H or ERJ2GEJ105X R361 Chip, Metal Glaze 33 kohm ±5% 1/16 W RK73B1ETTP333J or CR05-333J-H or ERJ2GEJ333X R362 Chip, Metal Glaze 100 kohm ±5% 1/16 W...
  • Page 60 Ref. No. Description RS Part No. Mfr’s Part No. R381 Chip, Metal Glaze 82 kohm ±5% 1/16 W RK73B1ETTP823J or CR05-823J-H or ERJ2GEJ823X R382 Chip, Metal Glaze 2.4 kohm ±5% 1/16 W RK73B1ETTP242J or CR05-242J-H or ERJ2GEJ242X R383 Chip, Metal Glaze 2.4 kohm ±5% 1/16 W...
  • Page 61 Ref. No. Description RS Part No. Mfr’s Part No. R402 Chip, Metal Glaze 2 kohm ±5% 1/16 W RK73B1ETTP202J or CR05-202J-H or ERJ2GEJ202X R403 Chip, Metal Glaze 2 kohm ±5% 1/16 W RK73B1ETTP202J or CR05-202J-H or ERJ2GEJ202X R404 Chip, Metal Glaze 2 kohm ±5% 1/16 W...
  • Page 62 Ref. No. Description RS Part No. Mfr’s Part No. R423 Chip, Metal Glaze 470 kohm ±5% 1/16 W RK73B1ETTP474J or CR05-474J-H or ERJ2GEJ474X R424 Chip, Metal Glaze 10 kohm ±5% 1/16 W RK73B1ETTP103J or CR05-103J-H or ERJ2GEJ103X R425 Chip, Metal Glaze 10 kohm ±5% 1/16 W...
  • Page 63 Ref. No. Description RS Part No. Mfr’s Part No. R444 Chip, Metal Glaze 39 kohm ±5% 1/16 W RK73B1ETTP393J or CR05-393J-H or ERJ2GEJ393X R445 Chip, Metal Glaze 39 kohm ±5% 1/16 W RK73B1ETTP393J or CR05-393J-H or ERJ2GEJ393X R446 Chip, Metal Glaze 39 kohm ±5% 1/16 W...
  • Page 64 Ref. No. Description RS Part No. Mfr’s Part No. RA307 1 kohm x 4 ±5% 1/16 W CN1J4TTD102J RA308 1 kohm x 4 ±5% 1/16 W CN1J4TTD102J Crystal X301 11.0592 MHz GE-06D-3120 X302 18.432 MHz GE-06D-3130 Miscellaneous Cable, Flat FFC LIST ITEM NO.1 Shield, Logic GR-07D-2860 Himelon, Protect...
  • Page 65 Ref. No. Description RS Part No. Mfr’s Part No. Assembly PCB, Keyboard GA-07D-2870 Consists of the following: Capacitor C501 Ceramic 0.001 μF 50 V ±10% ECJ1VB1H102K or CM105X7R102K50AT or GRM1885C1H102KA01D C502 Ceramic 0.1 μF 25 V ±10% ECJ1VB1E104K or 16 V or CM105X7R104K16AT or GRM188R71C104KA01D Connector...

  • Page 72: Microprocessor (Ic306) Port Format

    MICROPROCESSOR (IC307) PORT FORMAT Number Function Number Function Number Function Tri-Color LED D/A output Power Save output DSP Comms and Pin 12 74LV595A out Tri-Color LED D/A output Select DG Audio output DSP Comms and Pin 14 74LV595A out High Speed Data input DSP Comms output PLL Clock output WX Alert input...
  • Page 75 RadioShack Corporation Fort Worth, Texas 76102 08A08...

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