KX-TG2560B, KX-TG2560S - Panasonic Telephone Service Manual (repair manual). Page 20

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This procedure will enable the technician to make adjustments to the KX-TG2570B HANDSET and BASE UNIT.

This procedure has 2 sections. The first section instructs the technician on how to align the HANDSET. We recommend aligning
the  HANDSET first, since you will need the HANDSET to align the BASE UNIT. The second section aligns the BASE UNIT. You
can use either section separately, or together to align the entire cordless phone unit.

At the beginning of each section, you will find a preparation procedure instructing you on how to prepare the unit to the point of
placing the unit in TEST mode. Please follow this procedure to insure proper alignment.

Each section's procedure consists of Adjustment Items adjusting one specific variable hardware component.
Each Item lists the equipment needed, how to connect and setup the equipment, how to make the adjustment, and how to verify
the adjustment if necessary.

Before the actual procedure, you will find a procedure detailing how to place that part in TEST mode. You will have to perform
this procedure before each individual Adjustment Item.

Once aligned, please remove all equipment connections and solder points, and reassemble the unit. As a final check, power up
the phone and check for HANDSET linking with the BASE UNIT.

1.

Marconi : Model 2945A

  2.    Jig (PQZZTG200RF1)
  3.

Oscilloscope, single or dual channel : Panasonic VP-5512P100 or compatible.

  4.    Telephone Analyzer : B&K Model 1050 or compatible.
  5.    DC Power Supply, capable of supply 3.9V DC at 850mA NOTE : only needed if Telephone Analyzer does not have

DC VOLTS output available.

  6.    High Frequency Attenuator, 10dB or greater.
  7.    Corded Telephone.

8.

High Frequency Cable : RG-188A/U.

  9.    Audio Cable : BNC end to alligator clip end.
10.

HOZAN D-280 ceramic screw driver.

11.

Isolation Capacitors, quantity of 2, part No. ECEA1HU100.

12.

Soldering Iron, solder, and various tools.

1) Warm up the Marconi Radio Tester, for at least 30 minutes to allow internal crystal
    oscillation to become stable.
2) Please refer to figures in page 21 for base unit wire connection.
3) Connect the AC Adaptor (PQLV10Z) , while pressing "Volume up", "Volume down", and "LOCATOR / INTERCOM" key
     at the same time.
4) Press "LOCATOR / INTERCOM" button.
5) Press "

" key to TP_TEST2-TPS4 on.

6) Press "LOCATOR / INTERCOM" button.

1. Solder RF cable to 2.4G Tx ANT and RF GND.
2. Press "REDIAL" button and set SS Mode to be OFF.
    TP Tx ANA pull up wire close.
3. Press "FLASH" button and set to TX Power ON mode.
4. Set Marconi:    Tx Test  : Select "Tx Test" Mode
5. Input Carrier Frequency of Base Unit. (CH1)

Freq.=(2406.160 MHz) - 1750MHz = 656.160MHz (Don't press "Auto Tune" key.

    After inputting the CH1 frequency, confirm the it's frequency difference.)
6. Check TX Frequency as shown on CRT. This should be 656.160 MHz ± 3kHz, (offset 

≤

 ±3kHz).

7. Adjust value of VC790 so that it is 656.160 MHz ± 3kHz (offset 

≤

 ±3kHz).

    When VC790 cannot be adjusted at this value, replace RF unit.