Icom IC-R7000 Service Manual

1
SECTION 2 OUTSIDE AND INSIDE VIEWS
I
2·1 FRONT PANEL
MODE INDICATOR------.
1 GHz INDICATOR (1 GHz]
SIG
METER--------------
SCAN-DELAY CONTROL---
[SCAN-DELA Y]
METER SWITCH [METER]
SIGNAL INDICATOR [SIG
PROGRAMMED SCAN-----'
INDICATOR [PRO]
SCAN-SPEED CONTROL
SCAN INDICATOR
[SCAN]------'
[SCAN-SPEED]
VOICE SCAN
CONTROL
SWITCH [VSC]
PHONES
JACK---~
[PHONES]
RECORDING
JACK [REC]
r---SCAN START/STOP-------,
1
~PRIO rmPROG n SEL-M MODE MEMORY
l~~Ll!!s~~
I Eal] Eal] Eal] Eal] Eal]
AF GAIN CONTROL [AF GAIN]-----'
SQUELCH CONTROL [SQUELCH]-------'
MEMORY CHANNEL SCAN START/STOP----~
SWITCH [MEMORY]
SELECTED MODE MEMORY SCAN START/STOP
SWITCH
[MODE]
SELECTED MEMORY SCAN START/STOP
SWITCH [SEL-M]
PROGRAMMED SCAN START/STOP
SWITCH
[PROG]
PRIORITY SCAN START/STOP
SWITCH [PRIO]
PRIORITY SCAN SET SWITCH
[PRIO-SET]
PROGRAMMED SCAN SET SWITCH
[PROG-SET]
SELECTED MEMORY SET/RESET SWITCH
[SEL-M-SET/RESET]
DIMMER SWITCH
[DIMMER]
NOISE
BLANKER
SWITCH [NB]
ATTENTUATOR--+ll!;~ll
SWITCH [ATT]
REMOTE
SWITCH
[REMOTE]
-----FREQUENCY INDICATOR
----AUTO INDICATOR [AUTO]
MEMORY
CHANNEL
INDICATOR [M ch]
'-----SELECTED MEMORY
INDICATOR
[.]
'-------HI-LO INDICATOR [HI] [LO]
REMOTE CONTROL SENSOR AND
LED
INDICATOR
c) I]
TUNING STEP SELECTOR
CONTROL [TS]
MEMORY CHANNEL-WRITE
SWITCH
[MEMORY CH-WRITE]
'----CLEAR SWITCH [CLEAR]
'----MEMORY CHANNEL SELECTOR
CONTROL [MEMORY CH]
1 GHz BAND SWITCH
[1GHz)
l~~---SPEECH SWITCH
[SPEECH]
DIAL LOCK SWITCH
[LOCK]
SELECTED MEMORY
CLEAR SWITCH-----'
[SEL-M-CL]
TUNING CONTROL
AUTO-WRITE MEMORY SCAN START/STOP SWITCH
[AUTO-M]
2-1

Icom IC-R7000 Specifications

General

Brand	Icom
Model	IC-R7000
Category	Receiver
Language	English

Summary

ICOM IC-R7000 Service Manual

Section 2 Outside and Inside Views

2-1 Front Panel

Details the front panel controls and indicators of the IC-R7000 receiver.

2-2 Rear Panel

Section 4 Circuit Description

4-1 Receiver Circuits

Details the various stages and components involved in receiving signals.

4-1-1 Converter Circuit (Main Unit)

Describes the signal conversion circuit for frequency heterodyning.

4-1-3 RF Amplifier Circuit (RF Unit)

Describes the RF amplifier circuits responsible for boosting signal gain.

4-1-6 1st LO and 1st Mixer Circuits (RF Unit)

Explains the circuits for the first local oscillator and mixer stages.

4-1-17 3rd IF Circuit (IF Unit)

4.3 PLL Circuit (PLL Unit)

Describes the Phase Locked Loop circuit for generating oscillator signals.

4.4 Logic Circuit (Logic Unit)

Explains the functions of the CPU and associated logic circuits.

Section 6 Maintenance and Adjustment

6-1 Preparation Before Servicing

Lists essential steps and precautions before starting any servicing.

6-2 PLL Adjustment

Details the procedures and settings for adjusting the PLL circuits.

6-3 Local Oscillator Adjustment

Describes how to adjust the local oscillator circuits for proper frequency generation.

6-4 Receiver Adjustment

Provides steps for adjusting the receiver's performance parameters.

Section 9 Voltage Diagram

9-1 IC-R7000

Provides the voltage diagram for the main IC-R7000 unit.