Panasonic KX-F900 Service Manual page 112

I Kx-F 0 L
(4) ADJUSTMENT PROCEDURE
ADJUSTMENT ITEM
DESCRIPTION
(A)
Rx VCO Voltage
Confirmation only
(B)
Tx VCO Voltage
Confirmation only
EQUIPMEN]
Digital multimeter
Set to the DC voltage measurement in
the 20V range.
Digital multimeter
Set to the DC voltage measurement in
the 20V range.
PROCEDURE
Connect the minus wire to the metal cover of the
module and the plus wire to TP5, measure the volt-
age, and check that it comes within the 0.7 to 1.8
Vdc range. Proceed no further if the voltage is out-
side the designated range.
Connect the minus wire to the metal cover of the
module and the plus wire to TP6, measure the volt-
age, and check that it comes within the 0.8 to 1.8
(c)
Standard Frequency
Marconi
Press the TX test key.
Telephone Analyzer
Vdc range. Proceed no further if the voltage is out-
side the designated range.
Adjust VC301 is such a way that the TX FREQ offset
value comes within the + 500 Hz range.
(D)
TX Output
(E)
Standard Modulation
(F)
20 dB Electric Detection
Take the corded phone off the hook.
Marconi
Press the RX test key.
Set MOD1 to ON.
Connect LINE SCOPE on the telephone
analyzer and AF INPUT on the Marconi.
Telephone Analyzer
Take the corded phone off the hook.
Marconi
Press the RX test key.
Set MOD1 to OFF.
Press the TX test key.
Set AF1 to ON.
Connect LINE SCOPE on the telephone
analyzer and AFGEN OUT on the
Marconi.
Press the _ key.
Telephone Analyzer
Place the corded phone on the hook.
Marconi
Press the TX test key.
Set AF1 to OFF.
Press the _ key.
Press the RX test key.
Set MOD1 to ON.
Connect LINE SCOPE on the telephone
analyzer and AF INPUT on the Marconi.
Telephone Analyzer
Take the corded phone off the hook.
Adjust VR501 is such a way that the audio level is
set to -19 + 1 dBm.
Adjust VR502 is such a way that the FM level is set
to 6.4 + 0.5 kHz.
Adjust GEN LEVEL on the Marconi in such a way
that the SIAND is set to 20 + 1 dB.
Adjust VR301 in such a way that the letter "C"
flashes on the machine's LCD display.
I
Flashes
Once aligned, please reassemble the base unit. Also take off the back of the PORTABLE HANDSET and unsolder the
MIC lead short wire if you previously installed it.
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