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Icom IC-7200 Instruction Manual - Page 88

MAINTENANCE, ■ Fuse replacement, ◇ DC power cable fuse replacement

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11 MAINTENANCE ■ Fuse replacement If a fuse blows or the transceiver stops functioning, try to find the source of the problem, and replace the damaged fuse with a new, adequately rated fuse. CAUTION: Disconnect the DC power cable from the transceiver when changing a fuse. The IC-7200 has two fuses (DC power cable fuses) installed for transceiver protection. • DC power cable fuses ATC 30 A • Circuitry fuse ATC 5 A D DC power cable fuse replacement Refer the figure illustrated at right for the DC power cable fuse replacement. D Circuitry fuse replacement The 13.8 V DC from the DC power cable is applied to all units in the IC-7200, except for the power amplifier, through the circuitry fuse. This fuse is installed in the PA unit. q R emove the 11 screws, then remode the bottom cover and the PA shielding plate as shown below. ATC 30 A fuse w R eplace the circuitry fuse as shown in the diagram as below. ATC 5 A fuse Front panel e R eplace the PA shielding plate, bottom cover and screws to their original position. Be sure the gasket is seated correctly, and do not protrude from the transceiver when the PA shielding plate is replaced. 83

Section	Page
Front cover	1
IMPORTANT	2
FOREWORD	2
EXPLICIT DEFINITIONS	2
SUPPLIED ACCESSORIES	2
FCC INFORMATION	2
PRECAUTIONS	3
TABLE OF CONTENTS	4
1 PANEL DESCRIPTION	6
■ Front panel	6
◇ Keypad	10
■ Function display	12
■ Rear panel	14
◇ ACC socket information	15
■ Microphones	16
◇ HM-36	16
◇ SM-20(Option)	16
2 INSTALLATION AND CONNECTIONS	17
■ Unpacking	17
■ Selecting a location	17
■ Grounding	17
■ Antenna connection	17
■ Required connections	18
■ Advanced connections	19
■ Power supply connections	20
■ Connecting the DC Power Supply	20
■ Battery connections	20
■ External antenna tuners	21
■ Linear amplifier connections	22
■ Connections for CW	23
■ Connections for RTTY	24
◇ Connections for RTTY (FSK)	24
◇ Connections for RTTY (AFSK)	24
■ Connections for SSTV or PSK31	25
◇ When connecting to the [ACC] socket	25
◇ When connecting to the [MIC] connector	25
◇ When connecting to the [USB] jack	25
3 BASIC OPERATION	26
■ Before first applying power	26
■ Applying power (CPU resetting)	26
■ VFO description	27
■ VFO operation	27
◇ Selecting the VFO A/B	27
◇ VFO equalization	27
■ Selecting VFO/memory mode	28
◇ Differences between VFO mode and memory mode	28
■ Selecting an operating band	29
◇ Using the band stacking register	29
■ Frequency setting	30
◇ Using the main dial	30
◇ Direct frequency entry with keypad	30
◇ Programmable tuning steps	31
◇ Selecting the programmable tuning step	31
◇ 1 Hz and 10 Hz tuning steps	32
◇ TS switch flow chart	32
◇ Auto tuning step function	33
◇ ¼ tuning function (SSB data/CW/RTTY only)	33
◇ Band edge warning beep	33
■ Volume setting	34
■ Operating mode selection	34
■ Dial lock function	34
■ RF gain and Squelch	35
■ Meter function	35
■ Basic transmit operation	36
◇ Transmitting	36
◇ Output power and Microphone gain settings	36
■ Voice synthesizer function	37
4 RECEIVE AND TRANSMIT	38
■ Operating SSB	38
◇ Convenient functions for receive	38
◇ Convenient functions for transmit	39
◇ About 5 MHz band operation (USA version only)	39
■ Operating CW	40
◇ Convenient functions for receive	41
◇ Convenient functions for transmit	41
◇ CW reverse mode	42
◇ CW pitch control	42
◇ CW side tone function	43
◇ Keying speed setting	43
■ Operating RTTY (FSK)	44
◇ Convenient functions for receive	44
◇ RTTY reverse mode	45
◇ Twin peak filter	45
◇ RTTY decode set mode	46
■ Operating AM	47
◇ Convenient functions for receive	47
◇ Convenient functions for transmit	47
■ Data mode (SSTV/PSK31) operation	48
5 FUNCTIONS FOR RECEIVE	49
■ RIT function	49
■ Preamp and attenuator	50
■ AGC function	50
◇ AGC time constant selection	50
■ Twin PBT operation	51
■ IF filter selection	52
◇ IF filter selection	52
◇ Filter passband width setting	53
◇ IF filter shape (SSB/CW only)	53
■ Noise blanker	54
◇ Noise blanker settings	54
■ Noise reduction	55
◇ Noise reduction level setting	55
■ Notch function	56
◇ Auto notch function	56
◇ Manual notch function	56
◇ Manual notch filter setting	57
6 FUNCTIONS FOR TRANSMIT	58
■ VOX function	58
◇ Adjusting the VOX function	58
◇ VOX set mode	59
■ Break-in function	60
◇ Semi break-in operation	60
◇ Full break-in operation	61
■ Speech compressor	62
◇ Compression level setting	62
■ Split frequency operation	63
◇ Quick split function	64
◇ Split lock function	64
■ Measuring SWR	65
7 MEMORY OPERATION	66
■ Memory channels	66
■ Memory channel selection	66
■ Memory programming	67
◇ Programming in VFO mode	67
◇ Programming in memory mode	67
■ Frequency copying	68
◇ Copying in memory mode	68
■ Memory clearing	69
8 SCAN OPERATION	70
■ Scan types	70
■ Preparation	70
■ Programmed scan operation (VFO mode)	71
■ Memory scan operation (Memory mode)	71
9 ANTENNA TUNER OPERATION	72
■ Optional AT-180 automatic antenna tuner operation	72
◇ Tuner operation	72
◇ Manual tuning	72
■ AT-180 internal switch description	73
■ Optional AH-4 automatic antenna tuner operation	74
◇ AH-4 operation	74
10 SET MODE	75
■ General	75
◇ Quick set mode operation	75
◇ Set mode operation	75
■ Quick set mode	76
■ Set mode	79
◇ Paddle operation from [MIC] connector	87
11 MAINTENANCE	88
■ Fuse replacement	88
◇ DC power cable fuse replacement	88
◇ Circuitry fuse replacement	88
■ Memory backup	89
■ Resetting the CPU	89
■ Cleaning	89
12 TROUBLESHOOTING	90
13 OPTION INSTALLATIONS	92
■ MB-116 HANDLES installation	92
■ MB-117 CARRYING HANDLE installation	92
■ MB-118 MOBILE MOUNTING BRACKET installation	92
14 CONTROL COMMAND	93
■ Remote jack (CI-V) information	93
◇ CI-V connection example	93
◇ Data format	93
◇ Command table	94
◇ Band stacking register	96
◇ Data mode with filter width setting	96
15 SPECIFICATIONS	97
■ General	97
■ Transmitter	97
■ Receiver	97
16 OPTIONS	98
17 ABOUT CE	100
18 BAND VOLTAGE MODIFICATION	102
■ Band voltage modification	102