Icom IC-F7000 Power Supply Circuits, PA Unit Voltage Line, Display Board RC-26 Voltage Line

Page 18

4-5 POWER SUPPLY CIRCUITS

4-5-1 PA UNIT VOLTAGE LINE

LINE

DESCRIPTION

 

 

 

 

HV13

The voltage from an external power supply.

 

 

 

 

 

HV

The same voltage as the

HV13

line

passed

through the fuse (F6701).

 

 

 

 

 

 

 

 

 

 

 

 

S13V

The same voltage as the

HV13

line

passes

through the switching relay (RL6701).

 

 

 

 

 

 

 

 

13.8

The same voltage as the

HV13

line

passes

through the switching relay (RL6701).

 

 

 

 

 

PA8V

8 V for transmitter circuits regulated by the +8

regulator circuit (IC6601).

 

 

 

 

 

 

 

 

 

T8V

8 V for transmitter circuits regulated by the T8

regulator circuit (Q6601, Q6602).

 

 

 

 

 

 

 

 

 

 

4-5-2 DISPLAY BOARD (RC-26) VOLTAGE LINE

LINE

DESCRIPTION

 

 

H13V

The voltage from PA and MAIN units via the

J8201.

 

 

 

10V

Common 10 V converted from the 13 V line and

regulated by the +10 regulator circuit (IC8301).

 

 

 

5V

Common 5 V converted from the 5 V line and

regulated by the +5 regulator circuit (IC8290).

 

 

 

8V

Common 8 V converted from the 8 V line and

regulated by the +8 regulator circuit (IC8310).

 

 

 

4-5-3 PLL UNIT VOLTAGE LINE

LINE

DESCRIPTION

 

 

HV13

The voltage from MAIN units via the J5001, pin

1.

 

 

 

H5V

Common 5 V line from the MAIN unit via the

J7331, pin 21.

 

 

 

5V

Common 5 V converted from the 13 V line and

regulated by the +5 regulator circuit (IC5001).

 

 

 

8VL

Common 8 V converted from the 13 V line and

regulated by the +8 regulator circuit (IC5031).

 

 

 

4-5-4 MAIN UNIT VOLTAGE LINE

LINE

DESCRIPTION

 

 

S13V

The voltage from the PA unit via the J1901.

 

 

R13V

Receive 13 V converted from the S13V line and

regulated by the R13 regulator circuit (Q1505).

 

 

 

8V

Common 8 V converted from the S13V line and

regulated by the +8 regulator circuit (IC1502).

 

 

 

 

Common –5 V converted from the S13V line and

–5V

regulated by the –5 V DC-DC converter (IC1551,

 

D1551, D1552)

 

 

T8

Transmit 8 V converted from the S13V line and

regulated by the T8 regulator circuit (Q1501).

 

 

 

R8

Receive 8 V converted from the S13V line and

regulated by the R8 regulator circuit (Q1502).

 

 

 

5V

Common 5 V converted from the S13V line and

regulated by the +5 regulator circuit (IC1501).

 

 

 

H5V

Common 5 V converted from the HV13 line and

regulated by the +5 regulator circuit (IC3101).

 

 

 

HV

Common 5 V converted from the HV13 line and

regulated by the +5 regulator circuit (IC3101).

 

 

 

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Contents Service Manual AUS IntroductionOrdering Parts Repair Notes 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 Circuit DSP Receiver Circuit Main and DSP UnitsAGC Circuit DSP and Main Units AF Amplifier Circuit DSP and Main UnitsTransmitter Circuits RF Circuit MAIN, PA, PLL Units and DRI VER BoardRF Filter Circuit PLL Circuits LCD Circuit Display and Connect Boards Reset Circuit Display Board3 2ND LO and Reference Oscillator Circuits PLL Unit Microphone Circuit Display BoardDisplay Board RC-26 Voltage Line Power Supply CircuitsPA Unit 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 Required Test Equipment Adjustment ProceduresPreparation ConnectionEntering the Adjustment Mode Operating on the Adjustment ModePLL PLL Unit AdjustmentLPL Lock 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 Chassis Parts Mechanical Parts and DisassemblyFront Parts MIC UnitAccessries Accessories Front PartsConnect Board DS DSP Board Chassis PartsMIC Unit DR Driver BoardSEMI-CONDUCTOR Information Transistor and FET’SDiodes Connect Board TOP View Board LayoutsTOP 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
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