KX-TG2560B, KX-TG2560S - Panasonic Telephone Service Manual (repair manual). Page 22

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Please prepare the BASE UNIT before performing any adjustment procedures. Refer to the BASE UNIT REFERENCE DRAW-
ING for connection and test point locations.

1.

Unscrew all 4 screws from bottom of cabinet. Remove cabinet bottom.

2.

Unsolder antenna wire at RF module, and remove an antenna.

3.

Solder a test mode switch as shown on the BASE UNIT REFERENCE DRAWING.

4.

Solder one isolation capacitor's positive lead to the main P.C.Board TPT point and the other isolation capacitor's positive

         lead to the main P.C.Board TPR point.

5.

Connect the Audio Cable, positive lead to the TIP isolation capacitor's free lead, the negative lead to the RING isolation
capacitor's free lead. Do not connect the BNC end of the cable.

6.

Connect the Telephone Analyzer PHONE TEST JACK #1 to the BASE UNIT P.C.Board phone jack.

7.

Connect the corded telephone to the Telephone Analyzer PHONE TEST JACK #2.

  8.    Remove main P.C.Board from cabinet top and place beside cabinet.
  9.

Solder High Frequency Cable open end to ANT and RF GND as specified in BASE UNIT REFERENCE DRAWING
(P21, P25).

If you have one of the listed symptoms, please refer to this table and make the appropriate adjustments.

Transmission sound to HANDSET receiver is unstable

Does not link with HANDSET

Adjust Items (A) and (C).

Adjust Items (C) and (D).

Please perform the following steps to prepare the BASE UNIT for the Adjustment procedure.

1.

Set up all equipment as specified in following Item's Equipment Section.

2.

In pressing "Test" switch, connect AC Adaptor to DC Jack of BASE UNIT main P.C.Board.

3.

Press LOCATOR / INTERCOM button once. Next press "#" button, and "LOCATOR / INTERCOM" button
every once.
BASE UNIT P.C.Board should be in TEST MODE (CH1 TALK). Connect  Marconi, and confirm frequency for CH1. If unit is
not in TEST MODE, remove power from P.C.Board and repeat from step2.

4.

The output power switches ON/OFF at every time you press "FLASH" key. (Factory default setting is OFF).

5.

SS mode switches ON/OFF at every time you press "REDIAL" key. (Factory default setting is ON).

  6.    Pull up wire close TP-TXANA.

Set Marconi
 Tx Test
 Tx Freq.  : Input 656.160MHz
Output power of base unit: "ON"
(Follow the procedure (4).)
SS mode of base unit: "OFF"
(Follow the procedure (5).)
TP Tx-ANA pull up.
High Frequency Cable to right RF con-
nector.

Take phone off hook

Check MARKER equals 656.160 MHz ± 0.003 MHz
(offset 

≤ 

±3kHz).

When value is overed 656.160 MHz ± 0.003 MHz
(offset 

≤ 

±3kHz), Adjust VC790 of RF unit.

(A)

Standard Frequency

ADJUSTMENT ITEM

DESCRIPTION

EQUIPMENT

PROCEDURE

REMEDY

SYMPTOM

(Tx Test)

ADJUSTMENT PROCEDURE