Troubleshooting &Coietisssanstninnaricaniterasnarictne - Kenwood TS-870S Instruction Manual

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12 MAINTENANCE
TROUBLESHOOTING
The probiems described in this table are commonly encountered operational malfunctions. These types of difficulties
are usually caused by improper hook-up, accidental incorrect contra! settings, or operator error due ta incomplete
programming. These problem symptoms are not caused by circuit failure. Please review this table, and the
appropriate section(s) of this instruction manual, before assuming your transceiver is defective.
Note:
+ Due to frequency relationships of some circuits in this transceiver, beat tones may be heard on the following frequencies: 10.006 MHz.
20.000 MHz, 30.000 MHz. This is nota fault,
od
Placing a powered hanay transceiver near this transceiver may cause noise in the TS-6708.
Page
Problem Symptom Probable Cause Corrective Action Se
The transceiver will not | 1 The DC power supply is not switched ON. | 1. Switch ON the DC power supply. i 19
power up after The power cable is faulty. 2 Inspect the power cable. Confirm 1 3
connecting 4 13.8 V DC polarities are correct.
power supply and Red: positive (+); Black: negative (-).
pressing [POWER]. 3 The power cable is not connected 3 Confirm the power connector is locked 3
Nothing appears on the } : : : |
| securely. against the transceiver Rear Panel.
Display, and no receiver | a
hes Confirm the connections to the DG !
noise is heard, : !
i power supply are secure.
4 A power caple juse is open. 4 Look for the cause of the blown fuse. es
After inspecting and correcting any :
problems, install a new fuse with the
d same rating.
After switching ON the 1. The input voltage is outside 13.8 VDC |1 Correct the input voltage. Use a@ step- 3
power, the transceiver +15% (11.7 te 15.8 V DC). up transformer, if necessary, to raise the
does not function input line voltage to the DC power
normally. Forexample, ; supply. Or, use a 12 to 16 V batiery.
no digits or incorrect |2 The microprocessor has malfunctioned. }2 Review "MICROPROCESSOR RESET".| 63
digits appear on the After understanding what data will be
Display. lost, do a Partial Reset. If the problem
remains, do a Full Reset.
After switching ON the The backup lithium battery voltage is too Obtain a new battery frorr your dealer or a 54
transceiver, low. KENWOCD Service Cente:.
"14,000.00 MHz USB" is |
displayed wnen you have
NOT done a Full Reset.
The transceiver does not!1 Procedures are nat being followed ; 1 Review "WRITING CONVENTIONS inside
respond correctly after precisely. FOLLOWED". Pee
c
you press button orkey [2 The Lock function is ON. 2 Press [FLOCK] to turn OFF the Lock 64
cambinations, or turn function.
trol i i
hints Et aca 3 The microprocessor and its memory 13 Review "MICROPROCESSOR RESET".| 63
; need resetting. | After understanding what data will be
lost, do a Partia! Reset. !f the problem
remains, do a Full Reset.
Menu Nos. cannot be The Quick Menu function is ON ('MH2" is | Press [1MHz] to cancei the Quick Menu 24
selected in Menu mode. | lit). function.
The frequency cannol be | The Lock function is activated. i Press [FLOCK] to swilch OFF the function. 64
changed. !
Turning the RIT/XIT : The Receive incremental Tuning function is | Press [RIT] to switcn ON the function. | 44
control has no affect on | switched OFF. '
the receive frequency. | |
SSB audio quality is very.1 The filter for Digital operation is 1 Switch Menu No. 19 (PKT.FIL) to OFF. 26
poor she high'ariow' "| iselecled. 2 Turn the LOMWIDTH control , 51,52
audio frequencies are 9 The LO/WIDTH contro! or HI/SHIFT counterclockwise and the HI/SHIFT :
aosent. | coniroi is set incarrectly. control clockwise.
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