SERVICE MANUALADDENDUMCONTENTSPARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 65VOLTAGE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . 67Dec. 2009

mic unit

display unit

specifications

top view

receiver circuits

transmitter circuits

pll circuits

antenna tuner circuits

power supply circuits

port allocations

preparation before servicing

tuner adjustment

software adjustments

front unit

tenkey board

Icom IC-7800 Service  Manual Addendum

SUPPLIED ACCESSORIES

i front panel

i rear panel

i lcd display

i screen menu arrangement

INSTALLATION AND CONNECTIONS 2 Section

i selecting a location

i antenna connection

i required connections

i advanced connections

D Connecting the IC-PW1/EURO

i transverter jack information

microphone connector information

i accessory connector information

BASIC OPERATIONS 3 Section

i initial settings

i main/sub band selection

i selecting an operating band

D Tuning with the main dial

d quick tuning step

D Auto tuning step function

i operating mode selection

i volume setting

I Meter indication selection

D Transmitting

D Drive gain adjustment

RECEIVE AND TRANSMIT Section 4

D Convenient functions for receive

d about 5 mhz band operation (usa version only)

D Convenient functions for transmit

d apf (audio peak filter) operation

i electronic keyer functions

D Memory keyer screen

D Editing a memory keyer

D Contest number set mode

D Keyer set mode

I Operating RTTY (FSK)

D About RTTY reverse mode

D Functions for the RTTY decoder indication

D RTTY memory transmission

D Editing RTTY memory

D RTTY decode set mode

i operating psk

D About BPSK and QPSK mode

D Setting the decoder threshold level

D PSK memory transmission

D Editing PSK memory

D PSK decode set mode

D Data saving

I Operating AM

i repeater operation

i tone squelch operation

I Data mode (AFSK) operation

FUNCTIONS FOR RECEIVE Section 5

D Center mode

d mini scope screen indication

i preamplifier

i rit function

D Adjusting the AGC time constant

i twin pbt operation

D IF filter selection

D Roofing filter selection

I Dualwatch operation

I Noise blanker

i noise reduction

I Digital selector

FUNCTIONS FOR TRANSMIT 6 Section

D Using the VOX function

i break-in function

i monitor function

i transmit filter width setting (ssb only)

i split frequency operation

D Split lock function

VOICE RECORDER FUNCTIONS 7 Section

voice recorder functions

D Basic recording

i playing the recorded audio

i protect the recorded contents

D Recording

i programming a memory name

i sending a recorded message

i voice set mode

D Saving the received audio memory

MEMORY OPERATION Section 8

IC-7800

screen saver function

i general

i preparation

i firmware update— cf memory card

i firmware update— pc

d updating from the pc

screen menu arrangement

d convenient functions for transmit

d functions for the rtty decoder indication

operating psk

d functions for the psk decoder indication

d screen arrangement

display set mode

swr reading

d command table

instruction manual

explicit definitions

supplied accessories

front panel

rear panel

accessory connector information

lcd display

Section 2 INSTALLATION AND CONNECTIONS ■ Unpacking ������������������������

antenna jumper cable connection

antenna connection

required connections

advanced connections

linear amplifier connections

transverter jack information

microphones (options)

Section 3 BASIC OPERATIONS ■ When first applying power (CPU resetting) ����������

initial settings

main/sub band selection

selecting an operating band

frequency setting

d selecting 1 hz step

operating mode selection

volume setting

meter indication selection

d meter type selection

basic transmit operation

d drive gain adjustment

d programming the user band edge

D Convenient functions for transmit ������������� 4-3 D About 5 MHz band operation (USA version only) �������

operating ssb

operating cw

d about cw reverse mode

electronic keyer functions

d memory keyer screen

d editing a memory keyer

d contest number set mode

d keyer set mode

operating rtty (fsk)

d about rtty reverse mode

d rtty memory transmission

d editing rtty memory

d rtty decode set mode

d data saving

d about bpsk and qpsk mode

d psk memory transmission

d editing psk memory

d psk decode set mode

operating am

operating fm

repeater operation

tone squelch operation

data mode (afsk) operation

FUNCTIONS FOR RECEIVE 5 Section

Section 5 FUNCTIONS FOR RECEIVE ■ Spectrum scope screen ������������������

spectrum scope screen

d fix mode

d usb mouse operation

rit function

agc function

twin pbt operation

if filter selection

d roofing filter selection

dualwatch operation

noise blanker

noise reduction

notch function

audio scope screen

d audio scope set mode

Section 6 FUNCTIONS FOR TRANSMIT ■ VOX function �����������������������

vox function

break-in function

monitor function

transmit filter width setting (ssb only)

split frequency operation

quick split function

Section 7 VOICE RECORDER FUNCTIONS ■ Recording a QSO audio ������������������


Contents mic unit display unit specifications top view receiver circuits transmitter circuits pll circuits antenna tuner circuits power supply circuits port allocations preparation before servicing tuner adjustment software adjustments front unit tenkey board	SERVICE MANUALADDENDUMCONTENTSPARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 65VOLTAGE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . 67Dec. 2009 Next / 555