Panasonic KX-F900 Service Manual page 111

CORDLESS BASE UNIT
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(1) PREPARATION
Please prepare the BASE UNIT before performing any adjustment procedures. Refer to the CORDLESS BASE UNIT
REFERENCE DRAWING for connection and test point locations.
1. Remove the 3 screws on the bottom cabinet of the handset cradle.
2. Remove the bottom cabinet of the handset cradle.
3. Remove the soldering on the antenna wires of the RF module.
4. Remove the base unit anchoring screw.
5. Use the telephone cord to connect the fax machine line and PHONE TEST #1 on the telephone analyzer.
6. Use the telephone cord to connect the corded telephone and PHONE TEST #2 on the telephone analyzer.
7. Solder the plus and minus sides of the RF coaxial cable to ANT and RF GND, as shown on the page 113.
8. Connect the BNC connector on the RF coaxial cable to ANT on the Marconi.
(2) SYMPTOM/REMEDY TABLE
If you have one of the listed symptoms, please refer to this table and make the appropriate adjustments.
SYMPTOM REMEDY
Does not link with PORTABLE HANDSET Check Items (A) and (B).
If both are OK, adjust Items (E) and (F).
Transmission sound to PORTABLE HANDSET receiver is unstable Check Items (A) and (B).
If both are OK, adjust Items (C) and (D).
(3) ADJUSTMENT PREPARATION
Please perform the following steps to prepare the CORDLESS BASE UNIT for the Adjustment procedure.
1. While pressing the 1 and 8TART/OOPY/SET KEYS, turn on the power to the fax machine.
[Cordless Test] appears on the machine's LCD display.
2. Press the MUTE KEY four times.
[4. Talk Mode] now appears on the machine's LCD display.
3. Press the START/COPYISET KEY.
[Channel=01] now appears on the machine's LCD display.
,I, Any channel can now be keyed in using the 10 numeric keys on the machine.
4. Press the START/COPY/SET KEY twice.
The talk mode is now established for the channel displayed in step 3.
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L1B40 I
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now appears on the machine's LCD display.
Channel
Talk Mode
5. Establish the standard settings of the Marconi.
•First, set the RX test items.
GEN FREQ: 926.1 MHz
LEVEL: 60 dB!_V
MOD1 FREQ: 1 kHz off
LEVEL: 5kHz
MOD2 off
•Next, set the TX test items.
RF GEN ON
AF1 FREQ: 1 kHz off
LEVEL: -27dBm
AF2 off
TX FREQ: 902.1 MHz
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