![Icom IC-R8500 [44/48] Troubleshooting](/img/pdf.png)
Icom IC-R8500 [44/48] Troubleshooting
![Icom IC-R8500 [44/48] Troubleshooting](/views2/1074324/page44/bg2c.png)
41
13
TROUBLESHOOTING
The following chart is designed to help you correct
problems which are not equipment malfunctions. If
you are unable to locate the cause of a problem or
solve it through the use of this chart, contact your
nearest Icom Dealer or Service Center.
POSSIBLE CAUSE SOLUTION REF.
POWER
• DC power cable is improperly con-
nected.
• A fuse is blown.
• During AC adapter operation, the
jumper connector is not in use.
• External 12 V DC is connected to the
[DC IN] jack.
• Reconnect the DC power cable se-
curely.
• Check for the cause, then replace the
fuse with a spare one.
•
Connect the jumper connector to the
[DC13.8V] jack on the receiver’s rear panel.
• Connect the external power source to
the [DC13.8V] jack. The [DC IN] jack ac-
cepts an AC adapter (AD-55/A/V) only.
p. 8
p. 37
p. 8
p. 8
RECEIVE FUNCTIONS
• Volume level is too low.
• The squelch is closed.
• An external speaker or headphones are
connected.
• CW narrow mode is selected when no
optional filter is installed.
• Rotate [AF GAIN] clockwise to obtain a
suitable listening level.
• Rotate [SQUELCH] counterclockwise to
open the squelch.
• Disconnect the external speaker or
headphones.
• Select another mode or install the op-
tional CW narrow filter.
—
p. 14
—
pgs.
13, 38
• The coaxial cable is cut.
• No antenna is connected.
• The connected antenna is not matched
to the receive frequency.
• Wrong antenna connector is used for
V/UHF and HF antenna.
• Wrong antenna connector is selected in
set mode for HF antenna.
• An RF attenuator is activated.
• Fix the coaxial cable.
• Connect an antenna.
• Connect an antenna matched to the re-
ceiving frequency.
• Check the antenna connection.
• Select the proper antenna connector:
SO-239 or phono (RCA).
• Push [ATT 10 dB] or [ATT 20 dB] to can-
cel the function.
—
p. 8
p. 8
p. 8
p. 31
—
• [IF SHIFT] is rotated too far CCW or
CW.
• [APF] is rotated too far CCW or CW.
• The wrong mode switch is pushed.
• Set [IF SHIFT] to the center position.
•
Set the [APF] control to the center position
or push the [APF] switch to turn it OFF.
• Push the correct mode switch.
p. 14
p. 15
p. 13
• The operating frequency is lower than
30 MHz. (WFM mode cannot be se-
lected below 30 MHz.)
• Set the frequency above 30 MHz when
in WFM mode.
p. 13
FRONT PANEL CONTROL
• The lock function is activated. • Push [LOCK] for 1 sec. to deactivate. p. 12
• DIAL LOCK is selected in quick set
mode.
• Select PANEL LOCK in quick set
mode.
p. 31
PROBLEM
Power does not turn
ON when [POWER] is
pushed in.
No sound comes from
the speaker.
Sensitivity is low.
Receive signal is un-
clear or distorted.
WFM mode cannot be
set.
Main dial does not func-
tion.
[LOCK] does not lock
the keypad, function
switches, etc.
• The memory channel was changed be-
fore writing into memory.
• Push [MW] for 1 sec. to write into a
memory before changing channels.
p. 19The selected frequency
is erased.
• An optional UT-102
VOICE SYNTHESIZER
UNIT
is not installed.
• Install the UT-102. p. 38The frequency is not
announced when push-
ing [SPCH].
• The sleep timer has been activated. • Turn power back ON, then push
[SLEEP] one or more times to turn the
sleep timer function OFF, if desired.
p. 29Receiver turns OFF by
itself.
Содержание
- Ic r8500 1
- Explicit definitions 2
- Important 2
- Precautions 2
- R indoor use only 2
- R neve 2
- Read this instruction manual carefull 2
- Save this instruction manual 2
- Unpacking 2
- Connections 10 3
- Connector information 3 34 3
- Control commands 5 36 3
- Frequency setting 1 12 3
- Important i explicit definitions i precautions i unpacking i table of contents ii 3
- Maintenance 7 3
- Memory channels 7 22 3
- Optional installations 8 40 3
- Options 4 3
- Panel description 6 3
- Receive functions 3 16 3
- Scans 3 28 3
- Set mode 0 3
- Sleep timer 9 3
- Specifications 3 3
- Table of contents 3
- Troubleshooting 1 42 3
- I front panel 4
- Panel description 4
- Attenuator switches 10db 20db push to activate one of the attenuators 5
- Audio peak filter control apf p 15 adjusts the audio peak filter setting to pick up a de sired audio frequency only valid when the apf switch is on 5
- Audio peak filter switch apf p 15 5
- Brake adjustment screw adjusts the main dial tension 5
- Function display p 6 shows the selected frequency mode memory name etc 5
- Main dial changes the operating frequency set mode contents etc 5
- Panel description 5
- Push for 1 sec to activate the lock function p 2 5
- Push momentarily to toggle the audio peak filter circuit on and off 5
- S meter shows the strength of the received signal shows the squelch threshold level when the squelch is rotated past the center position 5
- Speech lock switch spch lock push momentarily to activate the voice synthesiz er function and have the displayed frequency announced 5
- Tuning step switches ts l ts m p 12 select the tuning step for the main dial push ts l to select a larger tuning step push ts m to select a smaller tuning step 5
- When the audio peak filter circuit is on push for 1 sec to toggle the filter setting between normal and narrow 5
- Auto p 24 push momentarily to start stop auto write scan push for 1 sec to select the written memories condition for the auto write scan 7
- Dly p 27 push momentarily to select a scan resume condi tion 7
- Grammed scan 7
- Keypad 7
- Panel description 7
- Prio p 25 push momentarily to start stop priority scan 7
- Push for 1 sec to enter the delay time scan speed setting condition 7
- Push for 1 sec to enter the priority channel pro gramming condition 7
- Push for 1 sec to set the memory channel as a skip channel 7
- Skip p 25 push momentarily to toggle the skip function on and off for any scan 7
- Vsc p 26 push to toggle the voice scan control function on and off 7
- I rear panel 8
- Amusblsbcw 9
- I function display 9
- Skip vs 9
- Connections 10
- D location 10
- D optional bracket and carrying handle 10
- D receiver stand 10
- I mounting installation 10
- Connections 11
- I required connections 11
- Antennas play a very important role in receiver opera tion connecting a poor quality antenna to the ic r8500 will result in less than optimum perfor mance 12
- Connections 12
- D using a long wire antenna for hf bands 12
- For best results connect a heavy gauge cable to a water pipe or long earth sunk copper rod make the distance between the gnd terminal and ground as short as possible 12
- Hf ant 12
- I antenna connection 12
- I grounding 12
- Never use a gas pipe or electri cal conduit pipe for grounding 12
- Pl 259 connector installation example 12
- Push sleep for 1 sec to enter quick set mode 12
- Push sleep momentarily to exit quick set mode 12
- R warning 12
- Rotate the m ch selector to select the hf ant item 12
- The ic r8500 has a 500 ω phono rca antenna connector for the hf bands when using a long wire antenna instead of a 50 ω matched antenna use one as long as possible at least 10 m 33 ft and select the active connector as follows 12
- The ic r8500 requires at least 2 antennas for full fre quency coverage one for 0 to 30 mhz and one for 30 to 2000 mhz 12
- To prevent accidents involving electricity and interfer ence from transceivers ground the receiver through the gnd terminal on the rear panel 12
- Type n connector installation example 12
- Connections 13
- Convenient when an optional ut 102 13
- I connecting to a pc 13
- I data demodulation terminal 13
- I tape recorder connections 13
- I transceive function 13
- Icom ci v transceivers or receivers can be connect ed via the remote jack the frequency and mode become the same when either radio is changed 13
- Is installed detected frequencies during scanning can be recorded see pgs 31 32 for settings 13
- See p 16 for details regarding connection and opera tion 13
- The ic r8500 can connect directly to a personal computer providing control of multiple functions such as instant frequency name programming using appropriate software see pgs 35 36 for the control command table 13
- The rec out jack has 350 mv rms 4 k ω output for connection to other audio equipment 13
- Frequency setting 14
- I read me first 14
- I using the keypad 14
- I lock function 15
- I using the main dial 15
- Mhz khz 15
- I initial settings 16
- I mode selection 16
- Receive functions 16
- D center indicator 17
- D if shift 17
- I functions for fm 17
- I functions for ssb cw 17
- I squelch function 17
- Bfo 0 0khz 18
- D agc function 18
- D audio peak filter 18
- D bfo adjustment 18
- D noise blanker 18
- Connect a terminal unit as above 19
- Cw narrow mode setting frequency displayed freq desired freq center of mark and space freq 600 hz 19
- D connections 19
- D receiving method 19
- Fm mode setting frequency displayed freq desired freq 19
- For high speed data 9600 bps reception in fm mode 19
- For regular speed data 1200 bps or lower reception in any mode 19
- Frequency settings depend on the mode used 19
- I data communications 19
- Lsb mode for amateur rtty setting frequency displayed freq desired freq mark freq 19
- Receive functions 19
- Select fm mode or usb cw modes for hf band data communications 19
- Set the connected terminal unit to the appropriate settings 19
- Set the receiver to the desired frequency as below 19
- To use the agc socket for af output change the internal jumper plug as illustrated at right 19
- Usb mode setting frequency displayed freq desired freq center of mark and space freq 19
- I bank selection 20
- I general 20
- Memory channels 20
- D using the keypad 21
- D using the m ch selector 21
- I channel selection 21
- I clearing 22
- I copy and paste memory editing 22
- I programming 22
- D bank name programming 23
- D channel name programming 23
- I channel bank names 23
- D deleting memory channels 24
- I assigning channel numbers 24
- Add 0ch 25
- Add 1ch 25
- D adding inserting memory channels 25
- Del 1ch 25
- For 1 sec 25
- Ins 1ch 25
- Memory channels 25
- Push bank for 1 sec 25
- Push bank for 1 sec to perform the selected operation 25
- Rotate m ch to select the following 25
- Select the bank you wish to add memory chan nel s to 25
- Usr t blank 25
- D memory scan 26
- D memory select scan 26
- I operation 26
- D programmed scan d auto memory write scan 27
- D priority scan 28
- I mode select function 28
- I specifying skip channel and frequency 28
- I automatic bank limit skip functions 29
- I voice scan control function 29
- D scan resume condition 30
- I programming scan edge frequencies 30
- I scan speed delay functions 30
- D assigning a function to the delay speed control 31
- D scan delay 31
- D scan speed 31
- Vr dly spd max 31
- Vr spd dly 3s 31
- D operation 32
- Sleep timer 32
- I general 33
- Set mode 33
- Auto ts 34
- Dimmer 34
- Hf ant 34
- I quick set mode items i initial set mode items 34
- Rec remo 34
- Rec spch 34
- Civ 731 35
- Civ addr 35
- Civ baud 35
- Civ tran 35
- Spch lan 35
- Spch spd 35
- Connector information 36
- D agc out jack 36
- D external speaker 36
- D if out jack 36
- D remote jack 36
- D rs 232c socket 36
- Connector information 37
- D dc 13 v and dc in sockets 37
- D phones jack 37
- D rec out jack 37
- D rec remote jack 37
- Dc 13 v 37
- Basic format from pc to ic r8500 answer from ic r8500 to pc 38
- Control commands 38
- I command table 38
- I data format 38
- The ic r8500 can be connected to a pc via the pc s rs 232c port this allows you to control the receiver from the pc and or transfer data from the receiver to the pc 38
- Clearing the specified channel data memory channel contents set write special bank number and channels bn 39
- Command list 39
- Frequency 1 234 567 890 hz mode fm tuning step 199 khz programmable step attenuator 10 db scan select specified scan skip specified memory name ic r8500 39
- Gain and level data gd bcd data 39
- I c r 8 5 0 0 39
- Memory channel contents set write 1a 00 39
- Ok message from ic r8500 to pc ng message from ic r8500 to pc 39
- Scan skip and select channels 39
- The above data packet is an example of programming the following into memory channel 123 of bank num ber 19 39
- Caution 40
- I cleaning 40
- I cpu resetting 40
- I disassembly 40
- I fuse replacement 40
- I level adjustments 40
- I memory backup 40
- Maintenance 40
- Cw narrow filter 41
- I fl 52a 41
- I ut 102 41
- Optional installations 41
- Voice synthesizer unit 41
- High stability crystal unit 42
- I cr 293 42
- D connections 43
- D operation 43
- D tv r7100 specifications 43
- I tv r7100 43
- Tv receive adapter 43
- Front panel control 44
- Possible cause solution ref 44
- Problem 44
- Receive functions 44
- Solve it through the use of this chart contact your nearest icom dealer or service center 44
- The following chart is designed to help you correct problems which are not equipment malfunctions if you are unable to locate the cause of a problem or 44
- Troubleshooting 44
- Memory channels 45
- Possible cause solution ref problem 45
- Troubleshooting 45
- 287 w 112 h 309 d mm 1 46
- 4 8 ω 46
- All specifications are subject to change without notice or obligation 46
- Antenna connector below 30 mhz so 239 50 ω phono 500 ω above 30 mhz type n 50 ω usable temperature range 10 c to 50 c 14 f to 122 f frequency stability below 30 mhz 100 hz 20 hz above 30 mhz 0 003 0 0006 46
- D in weight 7 kg 15 lb intermediate frequencies 46
- Frequency coverage 46
- I general 46
- I receiver 46
- If shift variable range more than 1 khz external speaker connector 2 conductor 3 mm 46
- Number of memory channels 1000 46
- Power supply requirement 13 v dc 15 negative ground 117 v ac u s a version with supplied ad 55a 230 or 240 v ac other versions with the optional ad 55 v current drain at 13 v dc standby 1 a max audio 2 a dimensions 46
- Receive system superheterodyne sensitivity 46
- Selectivity wfm more than 150 khz 6 db fm am w more than 12 khz 6 db fm n am more than 5 khz 6 db am n ssb cw more than 2 khz 6 db cw narrow more than 500 hz 6 db 46
- Specifications 46
- Spurious and image rejection ratio below 30 mhz more than 60 db 30 1000 mhz 50 db typical 1240 1300 mhz audio output power more than 2 w 46
- Squelch sensitivity 46
- Unit mhz 46
- Ah 7000 super wideband om nidirectional an tenna 47
- Cr 293 high stability crystal unit provides improved frequency stability 47
- Ct 17 ci v level converter ad 55 a v ac adapter 47
- Fl 52a cw narrow filter 455 khz 500hz 6 db 47
- Mb 23 carrying handle ic mb12 mobile mounting bracket 47
- Options 47
- Sp 7 external speaker 47
- Tv r7100 tv receive adapter sp 21 external speaker 47
- Ut 102 voice synthesizer unit 47
- 1 32 kamiminami hirano ku osaka 547 0003 japan 48
- Count on us 48
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