VHF/UHF DIGITAL TRANSCEIVER

Transcript

1 VHF/UHF DIGITAL TRANSCEIVER S-48XZ-C Apr. 009

2 INTRODUCTION This service manual describes the latest technical information for the IC-80AD and IC-E80D VHF/UHF DIGITAL TRANSCEIVER at the time of publication. MODEL VERSION TYPE OF EMISSION Max. TX POWER (VHF/UHF) [USA] [SEA] IC-80AD [CHN] [KOR] [AUS] [EXP] FD, FE, F7W W/ W [EUR] IC-E80D [UK] [ITR] [FRA] To upgrade quality, any electrical or mechanical parts and internal circuits are subject to change without notice or obligation. UNIT ABBREVIATIONS: F=FRONT UNIT L=LOGIC UNIT M=MAIN UNIT V=VCO UNIT R= UNIT CAUTION NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than specified. This will ruin the transceiver. DO NOT expose the transceiver to rain, snow or any liquids. DO NOT reverse the polarities of the power supply when connecting the transceiver. DO NOT apply an signal of more than 0 dbm (00 mw) to the antenna connector. This could damage the transceiver s front-end. (IC-80AD) Be sure to include the following four points when ordering replacement parts:. 0-digit Icom parts numbers. Component name. Equipment model name and unit name 4. Quantity required <ORDER EXLE> ORDERING PARTS S.IC TAFNG IC-E80D/80AD MAIN UNIT pieces Screw 48 screw IC-E80D/80AD Top cover 0 pieces Addresses are provided on the inside back cover for your convenience. REPAIR NOTES. Make sure that the problem is internal before disassembling the transceiver.. DO NOT open the transceiver until the transceiver is disconnected from its power source.. DO NOT force any of the variable components. Turn them slowly and smoothly. 4. DO NOT short any circuits or electronic parts. An insulated tuning tool MUST be used for all adjustments.. DO NOT keep power ON for a long time when the transceiver is defective.. DO NOT transmit power into a Standard Signal Generator or a Sweep Generator. 7. ALWAYS connect a 0 db to 0 db attenuator between the transceiver and a Deviation Meter or Spectrum Analyzer when using such test equipment. 8. READ the instructions of test equipment throughly before connecting a test equipment to the transceiver. Icom, Icom Inc. and ICOM logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.

3 TABLE OF CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTION SECTION 4 CIRCUIT DESCRIPITON 4- RECEIVER CIRCUITS TRANSMITTER CIRCUITS FREQUENCY SYNTHESIZER CIRCUITS CPU (LOGIC UNIT: IC) PORT ALLOCATION VOLTAGE BLOCK DIAGRAM SECTION ADJUSTMENT PROCEDURE - PREPARATION FREQUENCY ADJUSTMENT IDLING CURRENT ADJUSTMENT (at.0 V) IDLING CURRENT ADJUSTMENT (at 7.4 V) IDLING CURRENT ADJUSTMENT (at. V) TRANSMIT POWER ADJUSTMENT (at.0 V) TRANSMIT POWER ADJUSTMENT (at 7.4 V) TRANSMIT POWER ADJUSTMENT (at. V) DEVIATION ADJUSTMENTS TONE DEVIATION ADJUSTMENTS RECEIVE SENSITIVITY ADJUSTMENT S-METER ADJUSTMENT SECTION PARTS LIST SECTION 7 MECHANICAL PARTS SECTION 8 BOARD LAYOUTS SECTION 9 BLOCK DIAGRAM SECTION 0 VOLTAGE DIAGRAM LOGIC UNIT MAIN UNIT UNIT VCO UNIT

4 SECTION. SPECIFICATIONS D General <For IC-80AD> (unit: MHz) Version TX RX U.S.A , 40 40* , , S.E.A. CHN 7 74*, * EXP KOR 44 4, , AUS 44 48, 40 40* * Guaranteed MHz only, * Guaranteed MHz only <For IC-E80D> (unit: MHz) Version TX RX U.S.A , 40 40* , , S.E.A. CHN 7 74*, * EXP KOR 44 4, , AUS 44 48, 40 40* * Guaranteed MHz only, * Guaranteed MHz only Mode : FM, FN-N, AM (Rx only), WFM (Rx only), DV No. of memory channels : 0 (incl. 0 scan edges and call channels) Usable temp. range : 0 C to +0 C; 4 F to +40 F Tuning steps :,., 8., 9, 0,.,, 0,, 0, 0, 00, and 00 khz Selectable depending on the operating frequency band. Frequency stability : ±. ppm ( 0 C to +0 C; 4 F to +40 F) Power supply : V DC for external DC power, or specified Icom s battery pack Digital transmission speed : 4.8 kbps Voice coding speed :.4 kbps Current drain (at 7.4 V DC) : Tx High 44 MHz.8 A typical 40/440 MHz. A typical Tx Mid. 44 MHz. A typical 40/440 MHz. A typical Tx Low 44 MHz 0. A typical 40/440 MHz 0.7 A typical Tx S-Low 44 MHz 0.4 A typical Rx Rated output 70 ma typical (FM) ma typical (DV) Power save 0 ma typical (FM) (Duty :4) 8 ma typical (DV) standby ma typical (FM) 0 ma typical (DV) Antenna connector : SMA (0 Ω) Dimensions : 8.4(W) 0(H) 4.(D) mm; (projections not included) (W) 4 (H) (D) in Weight (approx.) : 90 g; 0. oz (with antenna and BP-7) D Transmitter Modulation system : FM Variable reactance freq. modulation DV (Digital) GMSK reactance freq. modulation Output power (at 7.4 V DC) (Typical) : High.0 W, Mid.. W, Low 0. W, S-Low W Max. frequency deviation : ±.0 khz (FM wide: approx.) ±. khz (FM narrow: approx.) Spurious emissions : Less than 0 dbc at High/Mid. Less than dbm at Low/Slow Ext. mic. impedance : kω D Receiver Receive system : Except WFM Double-conversion superheterodyne WFM Triple-conversion superheterodyne Intermediate frequencies : st. MHz/9. MHz (WFM only) nd 40 khz/. MHz (WFM only) rd.9 MHz (WFM only) Sensitivity (except spurious points): FM ( khz/. khz Dev.; db SINAD) MHz 0.4 μv typ MHz 0. μv typ MHz 0. μv typ MHz 4 μv typ MHz 0. μv typ MHz 0. μv typ MHz μv typ MHz 0. μv typ MHz 0. μv typ. WFM ( khz/. khz Dev.; db SINAD) MHz μv typ MHz.8 μv typ MHz. μv typ. AM ( khz/0% Mod.; 0 db S/N) MHz. μv typ MHz 0. μv typ MHz 0. μv typ MHz 0.79 μv typ MHz μv typ. DV (PN9/GMSK 4.8ksps; BER %) VHF (Amateur band only) 0. μv typ. UHF (Amateur band only) 0. μv typ. Audio output power : More than 00 mw at 0% distortion (at 7.4 V DC) with an 8 Ω load Selectivity : FM (Wide), AM More than 0 db FM (Narrow), DV More than 4 db WFM More than 00 khz/ db Less than 700 khz/ 0 db Ext. speaker connector : -conductor.(d) mm; ( 8 )/8 Ω Spurious and image rejection ratio : VHF More than 0 db UHF More than 0 db (Intermediate freq.; More than 0 db) Squelch Sensitivity (except spurious points): FM ( khz/. khz Dev.) MHz 0.4 μv typ MHz 0. μv typ MHz 0. μv typ MHz 4 μv typ MHz 0. μv typ MHz 0. μv typ MHz μv typ MHz 0. μv typ MHz 0. μv typ. WFM ( khz/. khz Dev.) MHz μv typ MHz.8 μv typ MHz. μv typ. AM ( khz/0% Mod.) MHz. μv typ MHz 0. μv typ MHz 0. μv typ MHz 0.79 μv typ MHz μv typ. All stated specifications are subject to change without notice or obligation. -

5 SECTION. INSIDE VIEWS LOGIC UNIT EEPROM (IC) LCD DRIVER (IC0) DIGITAL/ANALOG MODE ITCH (IC0) MIC GAIN ITCH (Q0) ALC (IC00) MIC LINE ITCH (IC0) AF FILTER (IC0 ) CPUV REGULATOR (IC00) AF MUTE ITCHES (Q40, 404) IDC (IC0) AF BUFE (IC04) AF POWER (IC400).V REGULATOR (Q07) LINEAR CODEC (IC0) / DIVIDER FOR MODEM CLOCK (IC00) DSP CODEC (IC0) DSP CLOCK (IC0) BUFFER for DSP CLOCK (IC0) + V ITCHING REGULATOR (IC0) LINE ITCH (IC04) -

6 MAIN UNIT (TOP VIEW) IF (Q0) AGC VOLTAGE DETECTOR (Q04) RX AF LINE ITCH (IC00) ST IF FILTER (WFM) (FI) ST IF FILTER (FM/AM/DV) (FI0) IF IC (IC00) CURRENT DETECT (IC800) TONE FILTER (IC0) AF FILTER (IC0) SERIAL/PARALLEL CONVERTER (IC70) ND IF FILTER (WIDE/NARROW) SELECTOR (Q) REFERENCE FREQUENCY SIGNAL BUFFER (Q40) MAIN UNIT (BOTTOM VIEW) (Q700) FM/WFM MODE ITCH (Q0) DISCRIMINATOR (X00) ND IF MIXER (WFM) (Q) ND IF (WFM) (Q) D/A CONVERTER (IC00) DETECT VOLTAGE SELETCOR (BATTERY/DC-IN) (IC000) ND IF FILTER (WIDE MODE) (FI00) ND IF FILTER (NARROW MODE) (FI00) TV REGULATOR (Q80) REFERENCE FREQUENCY OSCILLATOR (X40) SERIAL/PARALLEL CONVERTER (IC70) TV REGULATOR (Q804) -

7 UNIT TX POWER LIFIER (Q00) VCO UNIT TX LO LIFIER (IC00) CIRCUITS SHIFT ITCH (Q, 0) RV LINE ITCH (Q, 0, 70) HV LINE ITCH (Q000) -

8 SECTION. DISASSEMBLY INSTRUCTION. Removing the rear panel q Unscrew screws A and remove the plate B. w Unscrew screws C and screws D. e Disconnect the flat cable E from MAIN UNIT. r Remove the rear panel.. Removing the UNIT q Unsolder points A. w Unsolder points B and remove the shield plate C. e Unscrew 4 screws D and remove the UNIT from the rear panel. C A B FLAT CABLE D C D B B B UNIT D Rear panel Rear panel E A BE CAREFUL about the flat cable and connector when separating the CHASSIS UNIT from the FRONT UNIT.. Removing the MAIN UNIT q Unsolder points A. w Unscrew screws B. e Remove the MAIN UNIT from the rear panel. 4. Removing the LOGIC UNIT Unsolder points A. Unscrew screws B and remove the LOGIC UNIT from the front panel. B LOGIC unit B B B A MAIN UNIT B A A B UNIT Rear panel Front panel -

9 SECTION 4. CIRCUIT DESCRIPTION 4- RECEIVER CIRCUITS CIRCUITS ( UNIT) RX signals from the antenna are sorted by its frequency by the filters and gone through circuits for each bands. 7 MHz and below The RX signals are passed through two LPFs, ANT, band and LPF. The RX signals are sorted by its frequency by band s MHz The RX signals are passed through the band (D0) and LPF, and applied to tuned (Q00). The amplified RX signals are applied to the st mixer (IC900) via two band s (D0 and D707) MHz The RX signals are passed through the band (D0) and tuned, and applied to the (Q0). The amplified RX signals are passed through tuned, then applied to the st IF mixer (IC900) via two band s (D and D707) MHz The RX signals are passed through two LPFs, ANT, band (D00), LPF and another band (D0) in sequence, then applied to the (Q00) via the tuned. The amplified RX signals are passed through another tuned, then applied to another (Q0). The amplified RX signals are applied to the st mixer (IC900) via two band s (D and D707) MHz The RX signals are passed through two LPFs, ANT, and band (D400), then applied to the (Q400). The amplified RX signals are passed through the tuned, and applied to another (Q40). The amplified RX signals are passed through tuned, then applied to the st IF mixer (IC900) via two band s (D40 and D09). CIRCUITS MHz The RX signals are passed through the LPF, HPF, ANT, ATT, band (D0), HPF and another band in sequence, then applied to the (Q00) via the tuned. The amplified RX signals are passed through another tuned, then applied to another (Q0). The amplified RX signals are applied to the st mixer (IC900) via two band s (D and D707) MHz and MHz The RX signals are passed through the LPF, HPFANT, ATT, and tuned in sequence, then applied to the (Q00). The amplified RX signals are passed through another -pole tuned, and applied to another (Q0). The amplified RX signals are then applied to the st mixer (IC900) via two band s (D08 and D707) MHz The RX signals are passed through the LPF, HPF, ANT, ATT, band and HPF in sequence, then applied to the (Q00). The amplified RX signals are passed through the tuned, and applied to the (Q0). The amplified RX signals are passed through the, then applied to the st mixer (IC900) via two band s (D0 and D707) MHz The RX signals are passed through the HPF, ATT and applied to the (Q700). The amplified RX signals are passed through the tuned, and applied to another (Q70). The amplified RX signals are applied to the st mixer (IC900) via the band s (D70 and D707). The attenuation which reduces RX signal level to 0 db is carried out by D, D9 and D70, by turning these PIN diodes ON using "ATT" signal. To st mixer (IC900) for A D0 D0 Q00 D0 L0,0 C0-9 LPF D MHz L00,0 C0-04 LPF D00 From the VHF TX circuits ANT Tx: MHz L4,C7-9 LPF L- C- LPF D D4, Q0 D D D D0 0 7 MHz Q,,D-8 From the UHF TX circuits D0 L0,0 C MHz D0 L-7 C0-4 HPF ANT HPF D Q0 D0-09 Q00 D0 D04,0 D0 L00,0 C MHz D00 Q,,0 D,,4,0,,0 Tx: MHz LPF D40 D40,40 Q40 D404 D40 Q MHz D400 D08 Q0 D04,07 Q00 D0 D0,0 0 0 MHz MHz D00 UNIT D0 D04,0 Q0 D0 D0,0 Q00 L00,08 C00-0,0, MHz D00 HPF D70 Q70 AM P D70,704 Q700 D70 D 700 ATT L8,9 C8-0 HPF MHz 4 -

10 ST IF CIRCUIT (MAIN UNIT) The RX signals from the circuits are applied to the st mixer (: IC900) to be converted into the st IF signal, by being mixed with the st Local Oscillator (LO) signals from the VCO UNIT. The st LO signals from the VCO UNIT are applied to the st mixer via the LO, or doubler (in receiving of 00 MHz and above). The converted st IF signal is passed through the IF (D) which toggles the path of the st IF signal: WFM mode or other than WFM mode. FM/AM/DV MODE The st IF signal from the st mixer (: IC900) is entered to the MAIN UNIT, and passed through the st IF filter (FI0) via IF s (D, ) to remove unwanted signals. The filtered st IF signals are applied to the st IF (Q00), and the amplified st signal is applied to the nd IF circuit. WFM MODE (Incl. nd IF circuit) When receiving in WFM mode, the st IF signal from the st mixer (: IC900) is entered to the MAIN UNIT and passed through the IF (D) and, then applied to the st IF (Q). The amplified st IF signal is applied to the nd mixer (Q) to converted into the. MHz nd IF signal, by being mixed with the 4.9 MHz nd LO signal (generated by X40, tripled by Q4). The converted nd IF signal is passed through the nd IF filter (FI) to remove sideband noise, then applied to the nd IF (Q00) via the IF (D). The amplified nd IF signal is applied to the rd IF circuit. ST IF CIRCUIT MAIN UNIT To the IF IC (IC00) IF Q00 X40 D.MHz Reference frequency oscillator M ODE VCO UNIT BC ; Q,,D-,, VHF ; Q,,D- UHF ; Q0,0,D00-04 Q4 X FI0 XTAL CERAMIC VCOs FM/AM/DV:. MHz FI WFM:. MHz Q IF AM P D X Q80 M ODE D00 D80 LO IC900 st IF mixer TX circuits From the circuits ND IF AND DEMODULATOR CIRCUITS (MAIN UNIT) <For FM, AM and DV mode> The st IF signal from the st IF (Q00) is applied to the IF IC (IC00). The applied st IF signal is mixed with the. MHz nd LO signal (generated by X40, buffered by Q4) at the internal nd mixer, to be converted into the 40 khz nd IF signal. The converted nd IF signal is output from pin. FM MODE The nd IF signal from the IF IC is passed through the nd IF filter (FI00) via IF s (D0, 0). The filtered nd IF signal is backed to the IF IC from pin, and saturationamplified by the internal limit. The amplified nd IF signal is FM-demodulated by the discriminator (X00), and the recovered AF signals (RX AF signals) are output from pin 9, then applied to the AF circuits via the FM mode (IC00D, pins 8, 9). AM MODE The nd IF signal from the IF IC is passed through the nd IF filter (FI00) via IF s (D0, ). The filtered nd IF signal is amplified by nd IF (Q0), then applied to the AM demodulator circuit (Q04) to be recovered to the AF signals. The demodulated AF signals are applied to the AF circuits via the AM mode (IC00A). DV MODE The nd IF signal from the IF IC is passed through the nd IF filter (FI00) via IF s (D0, 0). The filtered nd IF signal is backed to the IF IC from pin, then saturationamplified by the internal limit. The amplified nd IF signal is FM-demodulated by the discriminator (X00), and the recovered AF signals (RX AF signals) are output from pin 9, then applied to the AF circuits via the AF mute (IC00, pins 4, ). RD IF CIRCUIT (MAIN UNIT) <For WFM mode only> The nd IF signal from the nd IF (Q00) is applied to the IF IC. The applied nd IF signal is mixed with the. MHz rd LO signal (generated by X40, buffered by Q4), to be converted into the.9 MHz rd IF signal by the internal rd mixer. The converted rd IF signal is output from pin, and passed through the IF s (D0, 0), then backed to the IF IC (bypassing FI00). The rd IF signal is FM-demodulated by the discriminator (X00), and the recovered AF signals (RX AF signals) are output from pin 9, then applied to the AF circuits via the WFM mode (IC00C, pins 8, 9). ND IF AND DEMODULATOR CIRCUITS MAIN UNIT D MODE FI00 CERAMIC D 0 M ODE Q04 AM DET Q0 IF FI00 CERAMIC D0 D0 D0 D0 AM MODE IC00A MODE MODE To the AF filter (IC0) To the mode Sw (IC0) To the buffer (IC04B) IC00D FM MODE IC00C WFM MODE D40 M ODE IC00 FM DET DISCRI Q4 WFM.MHz X or FM.MHz X4 From the IF (Q00) X00 X40.MHz 4 -

11 RX AF CIRCUITS (LOGIC UNIT) FM/W-FM/AM MODE The AF signals from the FM/AM demodulator circuits are passed through the mode (MAIN UNIT: IC00D/C/A) and one of the AF filters whose audio frequency response is set as stable for each RX mode (FM/AM or WFM). FM/AM-demodulated AF signals are filtered by IC0, and FM-demodulated AF signals (W-FM mode) are filtered by Q. The filtered AF signals are passed through the D/A converter (MAIN UNIT: IC00, pins, 4;, 7) for level adjustment. The level-adjusted AF signals are entered to the LOGIC UNIT, and applied to the AF power (IC400) to obtain audio output power. The power-amplified AF signals are applied to the internal speaker or output from the [SP] jack. DV MODE The FM-demodulated signals from the IF IC (MAIN UNIT: IC00) are applied to the modem (IC0) via the LPF and buffer (IC04B), to be converted into the DV data. The DV data is applied to the CPU (IC), and converted into the AMBE signals. The AMBE signal is then applied to the DSP CODEC IC (IC0) and decoded. The decoded AMBE signals are converted into the analog audio signal by liner CODEC IC (IC0). The converted AF signals are passed through the mode (MAIN UNIT: IC00B) and AF filter (MAIN UNIT: IC0A). The filtered AF signals are passed through the D/A converter (MAIN UNIT: IC00, pins, 4;, 7) for level adjustment. The level-adjusted AF signals are entered to the LOGIC UNIT, and applied to the AF power (IC400) to obtain audio output power. The power-amplified AF signals are applied to the internal speaker or output from the [SP] jack. SQUELCH CIRCUIT The squelch circuit cuts off the AF output signals when no signals are received. Detecting noise components (approx. 0 khz signals) in the demodulated AF signals, the squelch circuit stops audio signals being emitted. A portion of FM-demodulated AF signal from the IF IC (MAIN UNIT: IC00) is passed through the DAC (MAIN UNIT: IC00) for level (=threshold) adjustment. The level-adjusted AF signals are passed through the noise filter (IC00, pins 7, 8 and R, C, ) to filter the noise components (approx. 0 khz signals) only. The noise components are rectified to produce DC voltage corresponding to the noise level. If the noise level is higher than the preset one, the internal comparator set the "NOISE" signal to the CPU to "High", then the CPU turns the "AFON" signal which controlls the AF power (L: IC400) to "Low," to inactivate the AF power (L: IC400). At the same time, the CPU turns the "RMUTE" signal which controlls the AF mute (L: Q40, 404) to "Low," to cut-off the RX AF line. To RX AF circuits From IF IC (IC00, Pin) 9 0 DAC IC00 NOISE SQUELCH DIAGRAM 7 8 Noise filter Noise Noise Comparator detector IC00 NOIS RX AF CIRCUITS [SP] CHASSIS SP LOGIC UNIT IC400 AF MAIN UNIT POWER CONTROLLER AFON Q IC0 LINEAR CODEC DSP CODEC IC0 LPF IC00 4 IC0 AF FIL IC00A 4 M ODE <DV MODE> FM-demodulated AF signals from IF IC (IC00) <FM/AM/ MODE> AM/FM-demodulated AF signals from AM mode (IC00A)/FM mode (IC00D) CPU IC 0, MODEM IC0 IC04B BUFF 7 7 D/A Q AF FIL IC00D M ODE 8 <WFM MODE> FM-demodulated AF signals from WFM mode (IC00C) 4 -

12 4- TRANSMITTER CIRCUITS TX AF CIRCUITS (LOGIC UNIT) FM MODE MIC signals from the internal/external microphone (MIC signals) are passed through the MIC gain (Q0), and applied to the MIC (Q0, 04). The amplified MIC signals are passed through the mode (IC0) which toggles the MIC line according to the operating mode; FM or DV. The MIC signals are applied to the IDC (Instance Deviation Controller; IC0B) circuit which limits the amplitude of MIC signals (=deviation) to prevent over deviation. The amplitude-limited MIC signals are passed through the splatter filter (IC0C) which cuts off the khz and higher audio signals. The frequency-limited MIC signals are entered to the MAIN UNIT via the mode (IC0), then applied to the DAC (MAIN UNIT: IC00) for level (=deviation) adjustment. The level-adjusted MIC signals are applied to the modulation circuits. TX AF CIRCUITS DV MODE The MIC signals from the microphone (MC00) are passed through the MIC gain (Q0) and applied to the MIC (Q0, 04). The amplified MIC signals are applied to the ALC (IC00) which automatically adjusts the level of MIC signals to stable for digital processing, via the mode (IC0). The level-adjusted MIC signals are applied to the IDC circuit (IC0B) for amplitude-limiting. The amplitude-limited MIC signals are passed through the splatter filter (IC0C) which cuts off the khz and higher audio signals. The frequency-limited MIC signals are applied to the liner CODEC IC (IC0) via the buffer (IC04A), and encoded into the digital audio signal. The digital audio signal is then applied to the DSP CODEC IC (IC0) and converted into the AMBE signal. The AMBE signal is applied to the modem IC (IC0) via the CPU (IC). The modem IC converts the AMBE signal into the analog signal, and output to the DAC (IC00, pin ) via the buffer (IC0D) and the mode (IC0). The tone signal is level-adjusted by DAC (MAIN UNIT: IC00), then applied to the modulation circuits as the modulation signals. MC00 Q0 GAIN From ext. microphone Q0,04 MIC AM P IC0 MODE 7 ALC AM P IC00 IC0B Q0,07 7 ID C Q09 LPF IC0C 9 LPF 8 SPLATTER IC04A BUFF IC0 LINEAR CODEC LOGIC UNIT MAIN UNIT IC00 D/A Modulation signals to the VCO UNIT DSP CODEC CTCSS IC0 CPU IC?? IC0,0 MODEM IC0D 4 BUFF IC0 MODE 7 MODULATION CIRCUITS (VCO UNIT) The modulation signals from the DAC (MAIN UNIT: IC00, pin ) are entered to the VCO UNIT, and applied to the variable capacitors of VCOs. OPERATING ON VHF The modulation signals are applied to the D of the VHF VCO (Q,, D ) to obtain FM modulation. The FM-modulated VCO output is buffer-amplified by Q00, amplified by Q0 then entered to the UNIT as TX signal. OPERATING ON UHF The modulation signals are applied to the D00 of the UHF VCO (Q0, 0, D00 04) to obtain FM modulation. The FM-modulated VCO output is buffer-amplified by Q00, amplified by Q0 then entered to the UNIT as TX signal. TX LIFIERS ( UNIT) TX signal from VCO UNIT is applied to the LO (IC00) via the LO (D00). The amplified TX signal is passed through the ATT (D0, 0) which is a port of the APC circuit. The level-adjusted TX signal is amplified by YGR (Q0), drive (Q0) and power (Q00) amplifiers in sequence, to obtain TX output power. The power-amplified TX signal is passed through the TX filters, power detector and ANT s. OPERATION ON VHF The power-amplified TX signal from the power (Q00) is passed through the LPF, ANT (D9,, ), power detector (D9, 0) and two LPFs (as a harmonic filter), then applied to the antenna via ANT connector (CHASSIS; J). OPERATION ON UHF The power-amplified TX signal from the power (Q00) is passed through the, power detector (D0, ), ANT, HPF and LPF (as a harmonic filter), then applied to the antenna via ANT connector (CHASSIS; J). 4-4

13 APC CIRCUIT ( UNIT) The APC (Automatic Power Control) circuit stabilizes transmit output power to prevent transmit output power level change which is caused by load mismatching or heat effect, etc. TX signal is passed through the power detector (VHF; D9, 0/UHF; D0, ). The power detector rectifies a portion of the TX signal and converts it into DC voltage which is in proportion to the transmit output power. The detected voltage is applied to the APC controller (IC0B). The TX power setting voltage PSET is applied to another input terminal as the reference voltage. The output voltage is applied to the ATT (D0, 0) to control the attenuation level, to adjust the input level of the YGR (Q0) so that the TX output power is stable. The setting of TX power is carried out by applying voltage PSET to the APC controller (IC0B). The output voltage of the controller controls the bias of the drive and power s to reduce/increase the gain of these amplifi ers to set the TX output power to High, Mid., Low and S-Low. TX LIFIERS AND APC CIRCUIT D 00,80 TX/RX LO IC00 D0,0 ATT YGR Q0 DRIVE Q0 PWR AM P Q00 UHF TX signal L00. C00-0,9 Q L- D0,, D0, L4,C7-9 C- PWR DET ANT HPF LPF ANT GATE CTRL DSET L0,0 C0,07 Q D4- D9,0 L-7 C0-4 PSET APC CTRL IC0A VHF TX signal LPF PWR DET ANT LPF IC0B 4- FREQUENCY SYNTHESIZER CIRCUITS VCOs This transceiver has total of five VCOs; one RX VCO and RX/TX VCOs on the VCO UNIT, and two RX VCOs on the MAIN UNIT. BC VCO (VCO UNIT; Q, D,,, ) The BC VCO generates the st LO for BC band ( MHz) RX. VHF VCO (VCO UNIT; Q, D, 4) The VHF VCO generates the st LO for VHF band ( MHz) RX, and also TX signal for the operation on the VHF band. UHF VCO (VCO UNIT; Q0, D0 04) The UHF VCO generates the LO for UHF band ( MHz) RX, and also TX signal for the operation on the UHF band. When receiving 00 MHz and higher signals, the UHF VCO oscillates MHz st LO signals, and the output signal is doubled by the doubler (MAIN UNIT; Q80, D8) before being applied to the mixer (MAIN UNIT; IC900). PLL (VCO AND MAIN UNITS) The PLL circuit provides stable oscillation for both of the transmit and st LO frequencies. By comparing the fedback VCO output and the reference frequency signal, the oscillating frequency is stabilized. The PLL output frequency is controlled by the serial data including divide ratio from the CPU. A portion of output signals from each VCO are fedback to the PLL IC (MAIN UNIT: IC800) via buffers (VCO: Q00, 0) and LPF. The applied VCO outputs are divided by the prescaler and programmable divider, then phasecompared with divided reference frequency from X40 (MAIN). The phase difference is output via the charge pump, and applied to the VCOs as lock voltage via the loop filter. When the oscillation frequency drifts, its phase changes from that of the reference frequency, causing a lock voltage change to compensate for the drift in the VCO oscillating frequency. FREQUENCY SYNTHESIZER CIRCUITS UNIT Modulation signals BC :.4.4 MHz Q,,D-,, Q00 VCO BUFF VHF :.0-.4 MHz Q,,D- LO Q0 D 00 D80 TX/RX VCO UHF : MHz Q0,0,D00-04 BUFF Q0 LPF st LO signals (A ) VCO VCO UNIT IC800 LOOP FILTER PLL IC.MHz reference frequency 4 -

14 4-4 CPU (LOGIC UNIT: IC) PORT ALLOCATION PIN No. LINE NAME DESCRIPTION 4 - IN/ OUT STATUS CONDITION PCON Transceiver power control. While the transceiver power is OUT H ON. 4 AFMUTE AF mute signal to the AF mute (LOGIC UNIT: Q40, 404). OUT H AF mute. MUTE TX mute signal. OUT H TX mute. MICC MIC (LOGIC UNIT: Q04) control signal to the MIC controller OUT (LOGI UNIT: Q0). L MIC is activated. 7 AFON Control signal to the AF power controller (LOGIC UNIT: Q400 40). AF power (L: IC400) is OUT H activated (Squelch open). 9 BATT Power supply select signal to the power supply selector (LOGIC UNIT: IC000). OUT H/L H= Operated by the battery pack. L= Operated by an external power source. 0, MIC, MIC MIC gain control signals to the MIC gain controller (LOGIC UNIT: Q0). OUT ACQ ACQ signal to the modem (LOGIC UNIT: IC0). OUT H Synchronized. 4 RXDT RX data to the modem (LOGIC UNIT: IC0). IN TXDT TX data to the modem (LOGIC UNIT: IC0). OUT AMBEC DSP IC power line regulator (LOGIC: IC08) control signal. OUT H In DV mode operation. 8 DVC Liner CODEC IC power line regulator (LOGIC UNIT: Q0, 04) control OUT signal. H In DV mode operation. 0 PTT [PTT] key input. (Pull-down) IN H The key is pushed. DASTB Strobe signal to the DAC (MAIN UNIT: IC00). OUT BTDET Battery attach detect. IN L A battery is attached. 7 RXCK RX clock to the modem (LOGIC UNIT: IC0). IN 8 TXCK TX clock to the modem (LOGIC UNIT: IC0). IN 4 LINH LCD driver (LOGIC UNIT: IC0) chip-enable signal. OUT L LCD display OFF. LCE Strobe signal to the LCD driver (LOGIC UNIT: IC0). OUT LDI Serial data to the LCD driver (LOGIC UNIT: IC0). OUT 7 LCL Clock to the LCD driver (LOGIC UNIT: IC0). OUT 8 BLED [BUSY] LED driver (LOGIC UNIT: Q0) control signal. While receiving (Squelch OUT H open). 9 TXLED TX LED control signal. OUT H Lights ON. (While transmitting) 40 LLIGHT LCD backlight control signal. OUT L Backlight ON. 4 KLIGHT LCD/Key backlight driver (LOGIC UNIT: Q0) control signal. OUT L Lights ON. 4 AMBECLK AMBE clock signal to the DSP CODEC IC (LOGIC UNIT: IC0). OUT 4 AMBERXD AMBE RX data to the DSP CODEC IC (LOGIC UNIT: IC0). IN 44 AMBETXD AMBE TX data to the DSP CODEC IC (LOGIC UNIT: IC0). OUT 4 AMBESTB AMBE strobe signal to the DSP CODEC IC (LOGIC UNIT: IC0). OUT 4 NOIS Noise detect signal from the IF IC (MAIN UNIT: IC00). IN 47 AMBERES Reset signal to the liner CODEC IC and DSP CODEC IC (LOGIC UNIT: OUT IC0 and IC0). 49 AMBEEPR AMBEEPR signal to the DSP CODEC IC (LOGIC UNIT: IC0). IN 0 DTCS Tone fi lter response switching signal. OUT H DTCS signals is in use. KR0 KR4 Key detect signal. (Pushed button is detected according to the input voltage.) IN SQL [SQL] key input. (Pull-up) IN L The key is pushed. 7 DIUD [DIAL] input (Phase B). IN 9 DICK [DIAL] input (Phase A). IN Key matrix ports. KS0 KS 4 OUT 9 IOSTB Strobe signal to the expander ( UNIT: IC9). OUT 70 IOSTB Strobe signal to the expanders (MAIN UNIT: IC70, 70). OUT 7 IOEN Output enable signal to the expanders (MAIN UNIT: IC70, 70). OUT 7 DASTB Strobe signal to the DAC ( UNIT: IC90). OUT 7 PLLSTB Strobe signal to the PLL IC (MAIN UNIT: IC800). OUT 74 DATA Common serial data to the PLL ICs and DAC (LMX/MEE0SL/ MAGP). OUT 7 CK Common clock signal to the the PLL ICs and DAC (LMX/ MEE0SL/MAGP). OUT

15 4-4 CPU PORT ALLOCATION (continued) PIN No. LINE NAME DESCRIPTION IN/ OUT 77 RESET Reset signal from the reset IC (LOGIC UNIT: IC00). IN H STATUS CONDITION 79 UNLK Unlock signal from the PLL IC (MAIN UNIT: IC800). IN H PLL is locked. 8 RX RS- data (RXD). IN 8 TX RS- data (TXD). OUT 89 CLSFT Clock frequency shift signal to the clock oscillator (LOGIC UNIT: X, OUT D). H 90 PPS Power save mode control signal to thed PLL IC (MAIN UNIT: IC800). OUT L In power save mode. 9 CHGC Charging control signal to the charge circuit (LOGIC UNIT: Q0, OUT D0, ) H While charging. 9 CHGH Charging current control signal to the charging controller (LOGIC UNIT: OUT Q0, ). H Charging current increase. The voltage in proportion to the internal temperature. 97 TEMP The voltage divided by R (thermistor; LOGIC UNIT) and R7 (LOGIC IN UNIT). 98 RTONE Weather alert signals. IN 9 VIN DC voltage divided by the voltage detect resisters (LOGIC UNIT: R9 and R0). (Remaining battery capacity detection.) IN 99 CTONE CTCSS signals. IN 00 RSSI RSSI voltage from the IF IC (MAIN UNIT: IC00). IN 0 TX-V While operated by batteryrssi voltage from the IF IC (MAIN UNIT: IC00). While perated by external power supplycurrent in TX from the I-V IN converter (MAIN UNIT: IC800). 0 TTEMP The voltage in proportion to the TX power ( UNIT: Q00) temperature.the voltage divided by R (thermistor; UNIT) and IN R ( UNIT). 0 CTCOUT CTCSS/DTCS signals. OUT 04 DTMF Tone (DTMF, european tone: IC-E80D only) signals. OUT 09 CPUHV External power supply detection. External power supply is IN L connected. 0 POWER [POWER] key input. (Pull-up) IN L The key is pushed. D_AS Analog/Digital mode switching signal. IN H Analog mode. ECK Clock to the EEPROM (LOGIC UNIT: IC). OUT 4 ESIO Serial data to the EEPROM (LOGIC UNIT: IC). IN/ OUT CLIN Key detect signal. (Pushed button is detected by refering input voltage.) IN 8 CLOUT Cloning data. OUT 4- VOLTAGE BLOCK DIAGRAM Voltage from the power supply is routed to the whole of the transceiver via regulators and switches. Q000, D000, 00 IC0 IC00 Battery pack DC-IN DC +V +CPU REG REG BATT Q0 D0, CHG CHGH CHGC Q80 80 T TXC Q AF REG AFON REG T AF PWR (IC400) +V IC0 REG PCON IC DC-DC Q800, 80 VCOV BCVCOC UVCOC VVCOC.V.V REG +.V VCO UNIT DVC AMBEC.V REG +V V 4-7

16 SECTION. ADJUSTMENT PROCEDURE - PREPARATION REQUIRED INSTRUMENTS INSTRUMENTS SPECIFICATION INSTRUMENTS SPECIFICATION DC Cables Power Supply Power Meter (terminated type) Frequency Counter Modulation Analyzer OPC-4L (Optional product) Connects to battery terminals Output voltages Current capacity :. V DC 7.4 V DC.0 V DC : More than A Measuring range : 0 W Frequency range : MHz Impedance : 0 Ω R : Less than. : Frequency range : 00 MHz Frequency accuracy : ± ppm or better Input level : Less than mw Frequency range Measuring range : 0 00 MHz : 0 to ±0 khz JIG cables Multimeter Standard Signal Generator (SSG) (See the illust below) Input impedance Measuring range Frequency range Output level : 0 kω : 0V/0.0 A : 00 MHz : 0 to 90 dbµ ( 7 to 90 dbm) AC Millivoltmeter Measuring range : 0 mv to 0 V Attenuator Audio Generator Power attenuation : 0 db Capacity : More than 0 W Frequency range Output level : Hz : 00 mv M JIG CABLES [MIC] () PTT AUDIO GENERATOR ( Hz/ 00 mv) + AC MILLIVOLTMETER (0 mv to 0 V) + -conductor. (d) mm (MIC) plug k µf () [SP] -conductor. (d) mm plug 8 kω (CLONE) To [MIC] jack To [SP] jack -

17 M CONNECTION Oscilloscope Standard signal generator 0 to 90 dbµ ( 7 to 7 dbm) CAUTION: DO NOT transmit while SSG is connected to the antenna connector. Modulation analyzer (DC measurable) Attenuator 0 db or 40 db power meter W Frequency counter to the antenna connector JIG cables (See the page -) POWER SUPPLY Adjustments at. V To the [DC IN] jack OPC-4L Black: Adjustments at.0 V and 7.4 V Be sure the polarity. White: DC power supply. V/ A DC power supply.0 or 7.4 V/ A M ENTERING ADJUSTMENT MODE q Turn the transceiver power OFF. w Connect JIG cables (See the page -) to the [MIC] and [SP] jacks. e Push and [SQL] and [8], turn the transceiver power ON. Entering adjustment mode, the function display shows the adjustment item and conditions as below. JIG cables (See the page -) Adjusts the value for the item Frequency Mode Transmit power Adjustment item Selects next adjustment item Stores the value for the adjustment Selects previous adjustment item M QUITTING ADJUSTMENT MODE q Turn the transceiver power OFF. w Disconnect the JIG cable, then turn the power OFF. -

18 - FREQUENCY ADJUSTMENT Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT REFERENCE FREQUENCY ADJUSTMENT ITEM [FR] OPERATION ) Set the power supply voltage to 7.4 V. ) Connect an power meter to the antenna connector. ) Loose couple a frequency counter to the antenna connector. 4) While transmitting, adjust the frequency using [DIAL], then push [] to store the adjustment value. VALUE MHz (±00 Hz) - IDLING CURRENT ADJUSTMENT (at.0 V) Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT DRIVE IDLING CURRENT ADJUSTMENT ITEM OPERATION ) Set the power supply voltage to.0 V. ) Connect an power meter to the antenna connector. ) Connect a multimeter between the power supply and transceiver. 4) Set the item [IP] to "00." [VHF ] [ID] While transmitting, adjust the idling current using [DIAL], then push [] to store the adjustment value. VALUE 80 0 ma [UHF ] 0 00 ma FINAL IDLING CURRENT ) Set the power supply voltage to.0 V. ) Connect an power meter to the antenna connector. [IP] ) Connect a multimeter between the power supply and transceiver. [VHF ] While transmitting, adjust the idling current using [DIAL], then [UHF ] push [] to store the adjustment value. NOTE: When "IDLING CURRENT" is adjusted, "TRANSMIT POWER" must be re-adjusted too ma -

19 -4 IDLING CURRENT ADJUSTMENT (at 7.4 V) Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT DRIVE IDLING CURRENT [VHF ] (Hi power) ADJUSTMENT ITEM (Mid power) (Low power) [ID7] 4 (S-Low power) [UHF ] (Hi power) (Mid power) 7 (Low power) 8 (S-Low power) 9 FINAL IDLING CURRENT [VHF ] (Hi power) (Mid power) OPERATION ) Set the power supply voltage to 7.4 V. ) Connect an power meter to the antenna connector. ) Connect a multimeter between the power supply and transceiver. 4) Set the item [IP7] to "00." While transmitting, adjust the idling current using [DIAL], then push [] to store the adjustment value. ) Set the power supply voltage to 7.4 V. ) Connect an power meter to the antenna connector. ) Connect a multimeter between the power supply and transceiver. While transmitting, adjust the idling current using [DIAL], then push [] to store the adjustment value. VALUE 80 0 ma 0 00 ma. A 0 ma (Low power) [IP7] 4 (S-Low power) [UHF ] (Hi power) 0 ma. A (Mid power) 7 0 ma (Low power) 8 (S-Low power) 9 NOTE: When "IDLING CURRENT" is adjusted, "TRANSMIT POWER" must be re-adjusted too. 0 ma - 4

20 - IDLING CURRENT ADJUSTMENT (at. V) Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT DRIVE IDLING CURRENT [VHF ] (Hi power) ADJUSTMENT ITEM (Mid power) (Low power) [ID] 4 (S-Low power) [UHF ] (Hi power) (Mid power) 7 (Low power) 8 (S-Low power) 9 FINAL IDLING CURRENT [VHF ] (Hi power) (Mid power) [IP] (Low power) 4 (S-Low power) [UHF ] (Hi power) OPERATION ) Set the power supply voltage to. V. (supplying from [DC IN]) ) Connect an power meter to the antenna connector. ) Connect a multimeter between the power supply and transceiver. 4) Set the item [IP] to "00." While transmitting, adjust the idling current using [DIAL], then push [] to store the adjustment value. ) Set the power supply voltage to. V. (supplying from [DC IN]) ) Connect an power meter to the antenna connector. ) Connect a multimeter between the power supply and transceiver. While transmitting, adjust the idling current using [DIAL], then push [] to store the adjustment value. VALUE 80 0 ma 0 00 ma 700 ma 400 ma 0 ma 900 ma (Mid power) ma (Low power) 8 (S-Low power) 9 NOTE: When "IDLING CURRENT" is adjusted, "TRANSMIT POWER" must be re-adjusted too. 0 ma -

21 - TRANSMIT POWER ADJUSTMENT (at.0 V) Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT TRANSMIT POWER ADJUSTMENT ITEM [VHF ( LOW)] [VHF ( HIGH)] [PO] [UHF ( LOW)] 4 [UHF ( HIGH)] OPERATION ) Set the power supply voltage to.0 V. ) Connect an power meter to the antenna connector. VALUE ) While transmitting, adjust the TX power using [DIAL], then push [] to store the adjustment value mw -7 TRANSMIT POWER ADJUSTMENT (at 7.4 V) Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT TRANSMIT POWER (Hi power) [VHF ( LOW)] [VHF ( HIGH)] (Hi power) [UHF ( LOW)] [UHF ( HIGH)] (Mid power) [VHF ( LOW)] [VHF ( HIGH)] (Mid power) [UHF ( LOW)] [UHF ( HIGH)] (Low power) [VHF ( LOW)] [VHF ( HIGH)] (Low power) [UHF ( LOW)] [UHF ( HIGH)] (S-Low power) [VHF ( LOW)] [VHF ( HIGH)] (S-Low power) [UHF ( LOW)] [UHF ( HIGH)] ADJUSTMENT ITEM [PO7] OPERATION ) Set the power supply voltage to 7.4 V. ) Connect an power meter to the antenna connector. While transmitting, adjust the TX power using [DIAL], then push [] to store the adjustment value VALUE 4.8. W.0.4 W 4..0 W..7 W W 80 0 mw -

22 -8 TRANSMIT POWER ADJUSTMENT (at. V) Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT TRANSMIT POWER ADJUSTMENT ITEM OPERATION ) Set the power supply voltage to. V. (supplying from [DC IN]) ) Connect an power meter to the antenna connector. VALUE (Hi power) While transmitting, adjust the TX power using [DIAL], then push [VHF ( LOW)] [] to store the adjustment value W [VHF ( HIGH)] (Hi power) 4 [UHF ( LOW)].0.4 W [UHF ( HIGH)] 4..0 W (Mid power) [VHF ( LOW)] [VHF ( HIGH)] 7 (Mid power) 8..7 W [UHF ( LOW)] [UHF ( HIGH)] 9 [PO] (Low power) 0 [VHF ( LOW)] [VHF ( HIGH)] (Low power) [UHF ( LOW)] [UHF ( HIGH)] (S-Low power) 4 [VHF ( LOW)] [VHF ( HIGH)] (S-Low power) [UHF ( LOW)] [UHF ( HIGH)] W 80 0 mw - 7

23 -9 DEVIATION ADJUSTMENTS Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT ITEM OPERATION VALUE FM DEVIATION ) Set the power supply voltage to 7.4 V. ) Connect a modulation analyzer to the antenna connector through an attenuator, and set is as; HPF : OFF LPF : 0 khz De-emphasis : OFF Detector : (P-P)/ [FMV] ) Connect an audio generator to the JIG cable (See the page -). (Mod. Freq. = khz) ) Set the audio generator as; [VHF ( LOW)] Frequency : khz [VHF ( HIGH)] Level : 90 mvrms ) While transmitting, adjust the deviation using [DIAL], then push khz [UHF ( LOW)] 4 [] to store the adjustment value. [UHF ( HIGH)] (Mod. Freq. =00 Hz) ) Set the audio generator as; [VHF ( LOW)] Frequency : 00 Hz.. khz Level : 90 mvrms [FMR] [VHF ( HIGH)] ) While transmitting, adjust the deviation using [DIAL], then push [UHF ( LOW)] [] to store the adjustment value. [UHF ( HIGH)] khz DV DEVIATION ) Set the power supply voltage to 7.4 V. ) Connect a modulation analyzer to the antenna connector through an attenuator, and set is as; HPF : OFF LPF : 0 khz De-emphasis : OFF Detector : (P-P)/ ) Connect an audio generator to the JIG cable (See the page -), and set it as; Frequency : khz Level : 90 mvrms. (VCO MODULATION) [VHF ( LOW)] [VHF ( HIGH)] [DVV] [UHF ( LOW)] 4 [UHF ( HIGH)] (REF. MODULATION) [VHF ( LOW)] [VHF ( HIGH)] [DVR] 7 [UHF ( LOW)] 8 [UHF ( HIGH)] 9 While transmitting, adjust the deviation using [DIAL], then push [] to store the adjustment value... khz Minimum deviation - 8

24 -0 TONE DEVIATION ADJUSTMENTS Select an adjustment item using [] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT TONES DEVIATION [DTMF] (VHF) (UHF) [EUROPEAN TONE] (VHF) (UHF) [CTCSS] (VHF) (UHF) [DTCS] (VHF) (UHF) ADJUSTMENT ITEM [DT] [EUR] [CT] [DTC] OPERATION ) Set the power supply voltage to 7.4 V. ) Connect a modulation analyzer to the antenna connector through an attenuator, and set is as; HPF : OFF LPF : 0 khz De-emphasis : OFF Detector : (P-P)/ ) No audio signals are applied. While transmitting, adjust the deviation using [DIAL], then push [] to store the adjustment value. 4 VALUE.4. khz khz khz - 9

25 - RECEIVE SENSITIVITY ADJUSTMENTS ) Select an adjustment item (band) using [] / [8]. ) Set the SSG as specifi ed (frequency, deviation and output level). ) Push the [] to adjust (automatic) and store the adjustment value. ADJUSTMENT RECEIVE SENSITIVITY ADJUSTMENT OPERATION VALUE ITEM NOTE: RECEIVE SENSITIVITY must be adjusted before S-METER. Otherwise, S-METER will not be adjusted properly. ) Set the power supply voltage to 7.4 V. ) Connect an SSG to the antenna connector and set as; Modulation : khz Deviation :. khz [ MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [49.9 MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [ MHz*] 4 Set the SSG as; Level : 0 dbµ ( 07 dbm) [7.9 MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [7. MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [90. MHz*] 7 Set the SSG as; Level : 0 dbµ ( 07 dbm) [7.9 MHz*] 8 Set the SSG as; Level : 0 dbµ ( 07 dbm) [8. MHz*] 9 Set the SSG as; Level : dbµ ( 0 dbm) [4. MHz*] 0 Set the SSG as; [Tr] Level : dbµ ( 0 dbm) [7.9 MHz*] Set the SSG as; Level : dbµ ( 0 dbm) [74. MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [. MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [9.9 MHz*] 4 Set the SSG as; Level : 0 dbµ ( 07 dbm) [0. MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [0. MHz*] Set the SSG as; Level : 0 dbµ ( 07 dbm) [49.9 MHz*] 7 Set the SSG as; Level : 0 dbµ ( 07 dbm) [ MHz*] 8 Set the SSG as; Level : dbµ ( 0 dbm) [44 MHz*] 9 Set the SSG as; Level : dbµ ( 0 dbm) ; This output level of a standard signal generator (SSG) is indicated as SSG s open circuit. *; This frequency is an example only, and may differ from the actual frequency displayed on the function display. - 0 Push []. (Automatic adjustment)

26 - RECEIVE SENSITIVITY ADJUSTMENT (continued) ) Select an adjustment item (band) using [] / [8]. ) Set the SSG as specifi ed (frequency, deviation and output level). ) Push the [] to adjust (automatic) and store the adjustment value. ADJUSTMENT ADJUSTMENT ITEM OPERATION [49.9 MHz*] 0 Set the SSG as; Frequency : 49.9 MHz Level : dbµ ( 0 dbm) [47 MHz*] Set the SSG as; Frequency : 47 MHz Level : 0 dbµ ( 07 dbm) [. MHz*] Set the SSG as; Frequency :. MHz Level : 0 dbµ ( 07 dbm) [99.9 MHz*] Set the SSG as; [Tr] Frequency : 99.9 MHz Level : 0 dbµ ( 07 dbm) [0 MHz*] 4 Set the SSG as; Frequency : 0 MHz Level : 0 dbµ ( 07 dbm) [78 MHz*] Set the SSG as; Frequency : 78 MHz Level : 0 dbµ ( 07 dbm) [999.9 MHz*] Set the SSG as; Frequency : MHz Level : 0 dbµ ( 07 dbm) ; This output level of a standard signal generator (SSG) is indicated as SSG s open circuit. *; This frequency is an example only, and may differ from the actual frequency displayed on the function display. VALUE Push []. (Automatic adjustment) -

27 - S-METER ADJUSTMENT ) Select an adjustment item using [] / [8]. ) Set the SSG as specifi ed (frequency, deviation and output level). ) Push the [] to adjust (automatic) and store the adjustment value. ADJUSTMENT S-METER CURVE [4. MHz* (S0 level)] [4. MHz* (S level)] [4. MHz* (Full scale)] [87. MHz* (S0 level)] [87. MHz* (S level)] [87. MHz* (Full scale)] S-METER S LEVEL (FM) ADJUSTMENT OPERATION VALUE ITEM NOTE: RECEIVE SENSITIVITY must be adjusted before S-METER CURVE and S-METER S LEVLE. Otherwise, S-METER CURVE and S-METER S LEVLE will not be adjusted properly. [S0] [S] [SF] [S0] [S] [SF] ) Set the power supply voltage to 7.4 V. ) Connect an SSG to the antenna connector and set as; Modulation : khz Deviation :. khz Set the SSG as; Level : 8 dbµ ( dbm) Set the SSG as; Level : dbµ ( dbm) Set the SSG as; Level : dbµ ( 09 dbm) Set the SSG as; Deviation :. khz Level : dbµ ( 0 dbm) Set the SSG as; Level : dbµ ( 0 dbm) Set the SSG as; Level : dbµ ( 8 dbm) ) Set the power supply voltage to 7.4 V. ) Connect an SSG to the antenna connector and set as; Modulation : khz Deviation :. khz [.0 MHz*] Set the SSG as; Level : dbµ ( dbm) [. MHz*] Set the SSG as; Level : 8 dbµ ( dbm) [4 MHz*] 4 Set the SSG as; Level : dbµ ( dbm) [ MHz*] Set the SSG as; [S] Level : dbµ ( dbm) [ MHz*] Set the SSG as; Level : dbµ ( dbm) [0. MHz*] 7 Set the SSG as; Level : dbµ ( dbm) [4. MHz*] 8 Set the SSG as; Level : dbµ ( dbm) [. MHz*] 9 Set the SSG as; Level : dbµ ( dbm) [80 MHz*] 0 Set the SSG as; Level : 0 dbµ ( 07 dbm) ; This output level of a standard signal generator (SSG) is indicated as SSG s open circuit. *; This frequency is an example only, and may differ from the actual frequency displayed on the function display. Push []. (Automatic adjustment) Push []. (Automatic adjustment) -

28 - S-METER ADJUSTMENT (continued) ) Select an adjustment item using [] / [8]. ) Set the SSG as specifi ed (frequency, deviation and output level). ) Push the [] to adjust (automatic) and store the adjustment value. ADJUSTMENT ADJUSTMENT ITEM OPERATION S-METER S LEVEL Set the SSG as; (WFM) [.0 MHz*] Deviation :. khz Level : dbµ ( 0 dbm) [. MHz*] Set the SSG as; Level : dbµ ( 04 dbm) [4 MHz*] Set the SSG as; Level : dbµ ( 0 dbm) [ MHz*] 4 Set the SSG as; Level : dbµ ( 0 dbm) [ MHz*] Set the SSG as; [S] Level : dbµ ( 0 dbm) [0. MHz*] Set the SSG as; Level : dbµ ( 0 dbm) [4. MHz*] 7 Set the SSG as; Level : dbµ ( 0 dbm) [. MHz*] 8 Set the SSG as; Level : dbµ ( 0 dbm) [80 MHz*] 9 Set the SSG as; Level : dbµ ( 9 dbm) ; This output level of a standard signal generator (SSG) is indicated as SSG s open circuit. *; This frequency may differ from the actual frequency displayed on the function display. VALUE Push []. (Automatic adjustment) -

29 SECTION. PARTS LIST [ UNIT] REF PARTS H/V NO. NO. DESCRIPTION M. LOCATION IC S.IC UPC709TB-E T 4/4. IC S.IC LM904PWR T 4.8/4.7 IC 0040 S.IC TC7SFU(TE8L,F) B 4./8 IC S.IC BH0FVM-TR T.7/.8 IC S.IC MBE0SLPFV-G-ER-E T /.8 IC S.IC UPC77TB-E B 4.9/9. IC S.IC CD4094BPWR B.8/8.9 IC S.IC LM904PWR T 8./8.8 Q S.TRA XP4(TX) T 0./. Q S.TRA UNR9G0L T 9.7/7. Q S.TRA UNR9G0L T 9.7/9. Q S.TRA UNR9G0L B./.7 Q S.FET SK47(TEL,Q) T 9/7.7 Q0 000 S.FET SK47(TEL,F) T 4./0.4 Q S.TRA SC-TB S (R) T 4.4/7. Q S.TRA SC4-O(TE8R,F) B./. Q S.TRA SC00-T B 0.4/. Q S.TRA XP(TX) T 8.9/7. Q 9000 S.TRA UNR9G0L T./8. Q S.TRA SC00-T T 0.4/7 Q S.TRA SC00-T T.9/9 Q S.TRA UNR9G0L B 8.9/. Q S.TRA XP(TX) T.9/ Q S.TRA UNR9G0L T.8/0. Q S.FET SK8YB-TL-E B 9./8. Q S.TRA SC00-T B 7./.4 Q S.TRA XP(TX) B 4.7/. Q S.TRA SC9-T B 9./.9 Q S.TRA SC9-T B./.7 Q S.FET SK8YB-TL-E B.9/8. Q S.TRA SC00-T B.9/. Q S.TRA SC4VH-TL-E B.4/. Q S.TRA SC00-T B 0./.8 Q S.TRA UNR9G0L T 9./. Q S.TRA XP(TX) B./8.8 Q S.TRA UNR9NG0L B 7./.7 Q S.FET SK880-Y(TRICOM,F) T.8/7.7 Q S.TRA XP40(TX) B 9./4.4 Q S.TRA SC00-T T /9. Q S.FET TPCF804(TE8L,F) T.8/8.7 D S.DIO SV08(TPL,F) B 4/4.9 D S.DIO SV7(TPH,F) B 9.9/. D S.DIO MA74(TX) B 0.7/4. D S.DIO SV7(TPH,F) B 7./4. D S.DIO SV7(TPH,F) B 0./8.4 D S.DIO MA74(TX) B /4.9 D S.DIO SV07(TPH,F) T 0.4/8. D S.DIO SV07(TPH,F) T./9. D S.DIO SV08(TPL,F) B./7. D S.DIO SV08(TPL,F) B 7.8/.4 D S.DIO MA74(TX) B.9/47. D S.DIO MA74(TX) B /4. D S.DIO SV08(TPL,F) T 0.9/44.9 D S.DIO SV08(TPL,F) T 0.9/4.7 D S.DIO SV08(TPL,F) T 0./4. D S.DIO JDPS04E(TPH) T 7.8/4.4 D S.DIO JDPS04E(TPH) T 9/4.4 D S.DIO SV08(TPL,F) B 8./4. D S.DIO MAS077G0L B 0.4/4. D S.DIO MAS780GL B 0.8/0.7 D S.DIO SV08(TPL,F) B /0.7 D S.DIO MAS077G0L B 9./4. D S.DIO MAS077G0L B 7.9/7. D S.VAR SV(TPH,F) B./.9 D S.DIO MAS0GL B 9/ D S.DIO MAS077G0L B.4/9. D S.VAR SV(TPH,F) B.4/. D S.DIO SV08(TPL,F) B.4/7.9 D S.DIO SV08(TPL,F) T 9.9/40.7 D S.DIO MAS077G0L T 0./.8 D S.DIO SV08(TPL,F) T 7.8/. D S.DIO SV08(TPL,F) T./. D S.DIO MAS077G0L T 4.9/. D S.VAR HVC7BT-E T./.4 D S.DIO MAS077G0L T 4.4/8. D S.VAR HVC7BT-E T./7. D S.VAR HVC7BT-E T.8/.9 D S.DIO MAS077G0L T./. D S.DIO MAS780GL T 4./. D S.DIO SV08(TPL,F) T.7/4. D S.DIO SV08(TPL,F) B 0./4. D S.VAR HVC7BT-E B.9/.8 D S.VAR HVC7BT-E B.9/7. D S.VAR HVC7BT-E B./.4 D S.DIO MAS780GL B./7. D S.DIO SV08(TPL,F) B 7./0.8 D S.DIO SV08(TPL,F) B 9.7/ D S.DIO MAS077G0L B 8/.7 D S.VAR HVC7BT-E B 8/7. D S.DIO MAS0GL B.9/7.4 D S.DIO MAS077G0L B 7.7/4 D S.VAR HVC7BT-E B 8./0. D S.VAR HVC7BT-E B 9.4/7. D S.DIO MAS077G0L B 8./. [ UNIT] REF PARTS H/V NO. NO. DESCRIPTION M. LOCATION D S.DIO SV08(TPL,F) B 8.9/. D S.DIO SV08(TPL,F) B 4./. D S.DIO SV08(TPL,F) B./.7 D S.VAR HVC7BT-E B.9/.7 D S.VAR HVC7BT-E B /0.9 D S.DIO MAS0GL B./. D S.VAR HVC7BT-E B 0/.9 D S.VAR HVC7BT-E B 8./. D S.DIO SV08(TPL,F) B 4.9/4.9 D S.DIO SV08(TPL,F) B./. D S.DIO SV08(TPL,F) B.4/.4 D S.VAR HVC7BT-E B./8.9 D S.VAR HVC7BT-E B 7./ D S.VAR HVC7BT-E B 8.4/8. D S.DIO MAS0GL B./4.8 D S.DIO SV08(TPL,F) B /. D S.DIO SV08(TPL,F) B./. D S.DIO MAS0GL T 4./7.7 D S.DIO SV08(TPL,F) T./0. D S.DIO MAS0GL T.4/.4 D S.DIO MAS780GL T 7.9/7.8 D S.DIO RB00LA-40 T 4/8.7 L 0000 S.COI TR 9.N <COMO> T 0.4/4. L S.COI TR.N <COMO> T.7/4.7 L S.COI TR.N <COMO> T./4. L S.COI TL 4.N <COMO> T./4.9 L S.COI TL 4.N <COMO> T 8.7/4.4 L S.COI TL 7.N <COMO> T 9./47. L S.COI TL 4N <COMO> T.8/4. L S.COI ELJ NJFB B./40. L S.COI ELJ NJFB B./9.4 L S.COI MLF08D R8K-T B 4./4.4 L S.COI MLF08D R8K-T T./.7 L S.COI MLF08D R8K-T T./4. L S.COI LQW8ANNG00D B.7/4. L S.COI 0.-.-TR N <COMO> T 8.4/9.8 L S.COI LQW8AN8NG00D (LQW08A8NG00) B 4.4/7. L S.COI LQW8AN8NG00D (LQW08A8NG00) B.7/.4 L S.COI TL 4.N <COMO> T 7/4.9 L S.COI 0.-.-TR N <COMO> T 4./.9 L S.COI TL.N <COMO> T./.7 L S.COI TL 0.N <COMO> T./9.8 L S.COI TL 0N <COMO> T./. L S.COI ELJ N8DFB T 4./.9 L S.COI ELJ N8JFB (.8) T 4/4.8 L S.COI LQWBHNN8D0L T 4/. L S.COI ELJ NJFB T 48./7 L S.COI LQW8AN8NG00D T 4.9/7 L 0000 S.COI ELJ R0JFB T.9/.9 L S.COI ELJRE R0GFA B.8/4. L S.COI ELJRE RGFA B./4. L S.COI MLF08D RK-T B.4/40.7 L S.COI MLF08D RK-T B./8.8 L S.COI NLVT-0J B./. L S.COI MLF08D RK-T B 9/0. L S.COI MLF08D R8K-T B 8./9. L S.COI MLF08A R0K-T B /4.8 L S.COI MLF08D RK-T B.4/. L S.COI MLF08D RK-T B.7/.7 L S.COI ELJ NJFB T 8./9.4 L S.COI ELJ 8NJFB T 8./7.8 L S.COI ELJ 47NJFB T.4/.4 L S.COI ELJ 9NJFB T.4/. L S.COI ELJ NJFB T 8./. L S.COI ELJRE RGFA T.7/7.4 L S.COI ELJRE R0GFA T 7.8/.7 L S.COI ELJ NJFB T 8.8/7.7 L S.COI ELJ NJFB T 4./.8 L S.COI ELJRE R8GFA T./.8 L S.COI ELJ R0JFB T./7. L S.COI LQWANRJ00D B.9/.4 L S.COI LQW8ANRG00D (LQW08ARG00) B 7.4/. L S.COI LQW8AN8NG00D B 4.8/.8 L S.COI LQW8AN8NG00D B 7./9.7 L S.COI LQW8AN8NG00D B./4. L S.COI LQW8ANRG00D B./8.9 L S.COI ELJ NDFB B 8.8/8. L S.COI ELJ NJFB B 8.7/0. L S.COI ELJ 8NJFB (8.) B 9./.9 L S.COI ELJ NJFB B 0./. L S.COI ELJ N8JFB (.8) B 8.7/. L S.COI ELJ NJFB B 7./. L S.COI ELJ NJFB B.4/.8 L S.COI ELJ R0JFB B 8.4/.7 L S.COI LQW8ANNG00D (LQW08ANG00) B 4/ L S.COI LQW8ANNG00D B./0.9 L S.COI LQW8AN9NG00D B./.4 L S.COI LQW8ANNG00D (LQW08ANG00) B.9/.9 L S.COI LQW8ANNG00D (LQW08ANG00) B./9.7 M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side) S.=Surface mount -