Icom IC-F7000 service manual Output Expander IC for Bandpass FIL- Ters Main Unit IC3604

Page 20

4-6-4 OUTPUT EXPANDER IC FOR BANDPASS FIL- TERS (MAIN UNIT; IC3604)

Pin

Port

Description

number

name

 

 

 

 

4

B0S

Outputs 0.5–1.999999 MHz bandpass

filter control signal.

 

 

 

 

 

5

B1S

Outputs 2–2.999999 MHz bandpass

filter control signal.

 

 

 

 

 

6

B2S

Outputs 3–4.999999 MHz bandpass

filter control singnal.

 

 

 

 

 

7

B3S

Outputs 5–6.999999 MHz bandpass

filter control signal.

 

 

 

 

 

11

B7S

Outputs 18–23.999999 MHz band-

pass filter control signal.

 

 

 

 

 

12

B6S

Outputs 14–17.999999 MHz band-

pass filter control signal.

 

 

 

 

 

13

B5S

Outputs 10–13.999999 MHz band-

pass filter control signal.

 

 

 

 

 

14

B4S

Outputs 7–9.999999 MHz bandpass

filter control signal.

 

 

 

 

 

4-6-5 OUTPUT EXPANDER IC (MAIN UNIT; IC3603)

Pin

Port

Description

number

name

 

 

 

 

4

NMS

Outputs NBDP MOD control signal for

the gate mod IC (IC2001, pin 10).

 

 

 

 

 

5

EMS

Outputs external MOD control signal

 

 

for the gate mode IC (IC2001, pin 11).

 

 

 

 

 

Outputs microphone MOD control sig-

6

MMS

nal for the gate mode IC (IC2001, pin

 

 

9).

 

 

 

11

NMR

Outputs NMEA/RS-232C switching

signal.

 

 

 

 

 

13

AFMS

Outputs AF mute control signal.

 

 

 

14

CSEN

Outputs SEND control signal for the

buffer amplifier (IC1303, pin 6).

 

 

 

 

 

4-6-6 D/A CONVERTER IC (MAIN UNIT; IC3606)

Pin

Port

Description

number

name

 

 

 

 

 

 

Outputs transmit power control signal.

5

POCV

The signal is applied to the ALC ampli-

fier (IC1201, pin 3) and RF amplifier

 

 

 

 

(Q701).

 

 

 

 

 

Outputs the cooling fan control signal.

11

FANS

The signal is applied to the fan con-

 

 

troller (PA unit; IC6501, Q6501).

 

 

 

 

 

Outputs the transmitter/receiver

13

TRXS

switching signal. The signal is applied

to the switching relay circuit (PLL unit;

 

 

 

 

RL7301).

 

 

 

4 - 9

Page 19 Page 21
Image 20
Page 19 Page 21
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 ‘ ConnectionDSP Unit Circuit DescriptionReceiver Circuits DSP Receiver Circuit Main and DSP Units AGC Circuit DSP and Main UnitsDSP Circuit AF Amplifier Circuit DSP and Main UnitsTransmitter Circuits RF Filter Circuit RF Circuit MAIN, PA, PLL Units and DRIVER Board 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 LineOutput Expander IC for the PLL Unit Main Unit IC3602 Port AllocationsOutput Expander IC for the PLL Strobe Main Unit IC3601 6 D/A Converter IC Main Unit IC3606 Output Expander IC for Bandpass FIL- Ters Main Unit IC3604Output Expander IC Main Unit IC3603 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 RC-26 Front Panel L209 PresettingMain Unit TOP View 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 VARISTOR-2 Board Driver BoardVARISTOR-1 Board Front Unit Display BoardConnect Board Rear BoardHM-146 Main Unit Mechanical Parts and Disassembly Front PartsChassis Parts MIC UnitAccessries Connect Board AccessoriesFront Parts Chassis Parts MIC UnitDS DSP Board DR Driver BoardDiodes SEMI-CONDUCTOR InformationTransistor and FET’S 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
Top Page Image Contents