Icom IC-F7000 service manual PLL Unit Adjustment, LPL Lock, Pll, Voltage, HPL Lock

Page 24

5-2 PLL UNIT ADJUSTMENT

ADJUSTMENT

ADJUSTMENT CONDITIONS

MEASUREMENT

VALUE

ADJUSTMENT

UNIT

LOCATION

UNIT

ADJUST

LPL LOCK

1

• Operating frequency

: 0.5000 MHz

PLL

Connect a digital multi

1.0 V

PLL

C5305

VOLTAGE

• Mode

: J3E

meter or

oscilloscope

• Receiving

to the

check

point

CP5301.

2

• Operating frequency

: 0.4999 MHz

Less than 4.0 V

Verify

• Receiving

HPL LOCK

1

• Operating frequency

: 29.9999 MHz

PLL

Connect a digital multi

4.2 V

PLL

C5521

VOLTAGE

• Mode

: J3E

meter or

oscilloscope

• Receiving

to the

check

point

CP5401.

2

• Operating frequency

: 0.0300 MHz

More than 0.8 V

Verify

• Receiving

REFERENCE

1

• Wait for 5 minutes after power ON.

PLL

Connect

an RF

volt-

Maximum level

PLL

L5203,

FREQUENCY

• Terminate P5201 on the PLL unit to

meter to

the check

L5204

ground with a 50 Ω resister.

point P5201.

• Receiving

2

Connect

a

frequency

64.000000 MHz

R5255

counter to

the check

point P5201.

5 - 3

Image 24

Contents Service Manual Introduction Ordering Parts Repair NotesAUS OTHTable of Contents Specifications RC-26 Remote Controller ‘ General SP-25 External Speaker ‘ GeneralUnit mm inch 37 1 15 Section Inside Views RC-26IC-F7000 TOP View IC-F7000 Bottom ViewAbout External Reference Signal Input ‘ in Case of Using External Reference Signal‘ in Case of Using Internal Reference Signal ‘ ConnectionCircuit Description Receiver CircuitsDSP Unit DSP Receiver Circuit Main and DSP Units AGC Circuit DSP and Main UnitsDSP Circuit AF Amplifier Circuit DSP and Main UnitsTransmitter Circuits RF Circuit MAIN, PA, PLL Units and DRI VER BoardRF Filter Circuit PLL Circuits Reset Circuit Display Board 3 2ND LO and Reference Oscillator Circuits PLL UnitLCD Circuit Display and Connect Boards Microphone Circuit Display BoardPower Supply Circuits PA Unit Voltage LineDisplay Board RC-26 Voltage Line PLL Unit Voltage LinePort Allocations Output Expander IC for the PLL Strobe Main Unit IC3601Output Expander IC for the PLL Unit Main Unit IC3602 Output Expander IC for Bandpass FIL- Ters Main Unit IC3604 Output Expander IC Main Unit IC36036 D/A Converter IC Main Unit IC3606 Front CPU Port Allocations RC-26, Display Board IC8201 Adjustment Procedures PreparationRequired Test Equipment ConnectionEntering the Adjustment Mode Operating on the Adjustment ModePLL Unit Adjustment LPL LockPLL VoltagePLL Unit TOP View PA and Filter Units Adjustment PA Unit TOP View PLL Unit Bottom ViewReceiver Adjustments L209 Presetting Main Unit TOP ViewRC-26 Front Panel Transmitter Adjustments IC-APC VOL DialSection Parts List Main UnitMain Board Resistor ERJ3GE JPW Resistor ERJ12YJ0R00U R3332 7030003640 ECEV1CA471P Tantalum ECST1AY335R PLL Unit ADM202EARNResistor ERA3YEB Mylar PA Unit DSP Unit DSP Board Driver Board VARISTOR-1 BoardVARISTOR-2 Board Front Unit Display BoardConnect Board Rear BoardHM-146 Main Unit Mechanical Parts and Disassembly Front PartsChassis Parts MIC UnitAccessries Accessories Front PartsConnect Board Chassis Parts MIC UnitDS DSP Board DR Driver BoardSEMI-CONDUCTOR Information Transistor and FET’SDiodes Board Layouts TOP ViewConnect Board TOP View Rear Board TOP ViewBottom View MIC Unit Bottom View Connect Board Bottom View Rear BoardDisplay Board TOP View Bottom View Display Board DSP Board TOP View Bottom View DSP Board J9901 J9902J2051 Bottom View Main Unit PA Unit Bottom View PA Unit PLL Unit Bottom View PLL Unit Driver Board TOP View VARISTOR-1 Board Bottom View Driver Board Section Block Diagram Voltage Line TX Line RX Line Common LineWiring Diagram IC-F7000Voltage Diagrams 12-1 RC-26 and HM-146Main Unit Explanatory notes Main PA Unit PLL Unit JPW-ERJ3GE DSP Board