Receiver Section - Kenwood NX-700 Service Manual

NX-700/700H

Receiver Section

Item
Panel test mode
1. AF level [Panel test mode]
setting 1) CH-Sig: 1-1
SSG output:
–47dBm (1mV)
(MOD: 1kHz,
Dev: ±1.5kHz)
2. Sensitivity 1 1) Adj item: [SENS1]
Adjust Adjust: [✳✳✳]
(BPF adjust) 2) Adj item:
[L SENS1]→
[L' SENS1]→
[C SENS1]→
[H' SENS1]→
[H SENS1]
Adjust: [✳✳✳]
Press [ ] key to store
the adjustment value.
3. Sensitivity 2 1) Adj item: [SENS2]
Adjust Adjust: [✳✳✳]
(BPF adjust) 2) Adj item:
[L SENS2]→
[L' SENS2]→
[C SENS2]→
[H' SENS2]→
[H SENS2]
Adjust: [✳✳✳]
Press [ ] key to store
the adjustment value.
4. RSSI 1) Adj item: [An RRSSI]
reference Adjust: [✳✳✳]
adjust *5 2) Adj item:
[AnL RRSSI]→
[Analog [AnL' RRSSI]→
Narrow] [AnC RRSSI]→
[AnH' RRSSI]→
[AnH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz,
Dev: ±1.5kHz)
[Analog 1) Adj item: [Aw RRSSI]
Wide] Adjust: [✳✳✳]
2) Adj item:
[AwL RRSSI]→
[AwL' RRSSI]→
[AwC RRSSI]→
[AwH' RRSSI]→
[AwH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz,
Dev: ±3kHz)
58
ADJUSTMENT
Condition
PC test mode
equipment
1) Test Channel SSG
Channel: 1 DVM
Test Signaling AF VTVM
Mode: Analog Dummy
Signaling: 1 load (4Ω)
SSG output:
–47dBm (1mV)
(MOD: 1kHz,
Dev: ±1.5kHz)
1) Adj item:
[Sensitivity 1]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
Press [Apply All]
button to store the
adjustment value.
1) Adj item:
[Sensitivity 2]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
Press [Apply All]
button to store the
adjustment value.
1) Adj item: [RSSI SSG
Reference (Narrow)] AF VTVM
2) Adj item: [Low], Oscilloscope
[Low'], [Center], Distortion
[High'], [High] meter
SSG output: 12dB Dummy
SINAD level –3dB load
(MOD: 1kHz,
Dev: ±1.5kHz)
1) Adj item: [RSSI
Reference (Wide)]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz,
Dev: ±3kHz)
Measurement
Test-
Unit Terminal Unit
ANT
Ext.SP
connec-
tor
Adjustment
Specifi cations /
Parts Method
[Panel Volume Up/Down 2.83V±0.3V
tuning knob to obtain
mode] 2.83V AF output.
[ ],[ ] (2.0W @ 4Ω load)
[PC test
mode]
[ ],[ ]
(Volume
Button in
PC test
mode
screen)
[Panel Write the value as Variable-Capacitor
followings
tuning Tune voltage is
[L SENS1] / [Low]
mode] adjusted.
: 110
[ ],[ ] (Output voltage ad-
[L' SENS1] / [Low']
justment of IC206)
: 145
[PC test
[C SENS1] / [Center]
mode]
: 180
[ ],[ ]
[H' SENS1] / [High']
: 180
[H SENS1] / [High]
: 180
Write the value as Variable-Capacitor
followings
Tune voltage is
[L SENS2] / [Low]
adjusted.
: 70
(Output voltage ad-
[L' SENS2] / [Low']
justment of IC205)
: 87
[C SENS2] / [Center]
: 105
[H' SENS2] / [High']
: 135
[H SENS2] / [High]
: 185
[Panel test mode]
After input signal
from SSG, press
[ ] key to store the
adjustment value.
[PC test mode]
After input signal
from SSG, press
[Apply] button to
store the adjust-
ment value.
Remarks