Maintenance - Kenwood TS-930S Instruction Manual
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Also See for TS-930S:
- Service manual (92 pages) ,
- Instruction manual (51 pages) ,
- Instruction manual (50 pages)
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Access (STD. OSC. F.ADJ)
Sac:
a— Trimmer
Fig. 8-3 Digital display calibration
—
5.
Carrier balance adjustment (Signal unit)
With a 50 Q dummy load connected to the ANT terminal,
adjust for maximum
output at 14.175 MHz. Reduce mic
gain to zero. Set the transceiver in LSB mode. The power
meter or an oscilloscope will deflect if the carrier is un-
balanced. To balance the carrier, alternately adjust trimmer
TC2 and trimpot VR-21
until the meter indicates minimum.
Switch to USB mode and if the pointer deflects, readjust so
the pointer deflects equally for both LSB and USB.
6.
Side tone level adjustment (signal unit)
Adjust VR-32 for your preference.
7.
'Buzzer' level adjustment (Signal unit)
Adjust VR-33 for your preference.
8.
Monitor level adjustment (Signal unit)
Adjust VR-34 for your preference.
KTS
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i
Side tone level ADJ. VR
ine
Buzzer' level ADJ. VR
| mu
'
Monitor level ADJ.
VR
Fig. 8-4
9.
S meter adjustment (Signal unit)
Disconnect
the antenna
with the transceiver
in receive
mode. Zero-point adjustment:
Adjust VR2 for meter pointer zero indication. If a standard
signal generator
(SSG)
is available,
adjust VR3
so the
S-meter
indicates
''S-9'',
at 14.175 MHz
for A 40 dB
(50 2V) signal.
10. NOTCH adjustment (Signal unit)
Turn the MARKER switch on and tune for zero-beat in the
TUNE mode.
Piace the MODE switch to CW and turn the NOTCH switch
on.
Adjust the NOTCH
contro! to the 12 o'clock position and
fine tune NOTCH for the notch point.
Adjust
VR28
for
minimum
audio
output.
Repeat
the
NOTCH
control and VR28
adjustments several times for
best null.
8.3 MAINTENANCE
1. Semiconductors, resistors, and capacitors
Semiconductors are easily destroyed if a circuit is shorted.
Troubleshoot carefully.
2. Fuse
3. Fan motor lubrication
4. Meter lamp Replacement
1. Remove power cabie.
2. Remove 8 screws and top cover.
3. Slide METER
two meter tamps (with grommets)
from
their keyed slots on the rear of the METER shield.
. Desolder the leads from the circuit board adjacent to the
power switch.
5. Replace
the
lamps
in reverse
order
of disassembly.
Meter lamp part number
is B30-0817-15.
These
are
rated 12 V, 40 mV.
f
37
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