KX-TG2560B, KX-TG2560S - Panasonic Telephone Service Manual (repair manual). Page 2

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This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

When you mention the serial number, write down all 11 digits. The serial number may be found on the label affixed to the bottom of the unit.

LOCATION OF CONTROLS .......................................................... 3

DISPLAY .................................................................................... 4, 5

CONNECTION TO A TELEPHONE LINE ...................................... 6

OPERATION .................................................................................. 7

DISASSEMBLY INSTRUCTIONS .................................................. 8

HOW TO CHECK SPLASH RESISTANCE .................................... 9

CPU DATA  (Base Unit) ............................................................... 10

CPU DATA  (Handset) ................................................................. 11

EXPLANATION OF CPU DATA COMMUNICATION ............. 12~15

TERMINAL GUIDE OF IC'S, TRANSISTORS AND DIODES ...... 16

TEST MODE SETTING .......................................................... 17~19

ADJUSTMENT ............................................................................. 20

HOW TO CHECK THE RF UNIT (Base Unit) ........................ 20, 21

ADJUSTMENT (Base Unit) .................................................... 22~25

HOW TO CHECK THE RF UNIT (Handset) ................................ 26

ADJUSTMENT (Handset) ...................................................... 26~30

CIRCUIT BOARD (Base Unit) ...................................................... 31

SCHEMATIC DIAGRAM (Base Unit) .................................. 32

SCHEMATIC DIAGRAM (Handset-Main) ........................... 33

SCHEMATIC DIAGRAM (Handset-RF) .............................. 34

CIRCUIT BOARD (Handset) ............................................... 35

BLOCK DIAGRAM (Base Unit) (Main P.C.B) ..................... 37

NEW CIRCUIT OPERATION (Base Unit) ..................... 38~49

BLOCK DIAGRAM (Base Unit) (RF Unit) ........................... 50

RF UNIT CIRCUIT OPERATION (Base Unit-RF Unit) .. 51~54

BLOCK DIAGRAM (Handset-RF) ....................................... 55

BLOCK DIAGRAM (Handset-MAIN) ................................... 56

NEW CIRCUIT OPERATION (Handset) ....................... 57~60

TROUBLESHOOTING GUIDE ...................................... 61~64

CABINET AND ELECTRICAL PARTS LOCATION

                                                                   (Base Unit) ....... 65

CABINET AND ELECTRICAL PARTS LOCATION

                                                                   (Handset) ......... 66

ACCESSORY AND PACKING MATERIALS ...................... 67

REPLACEMENT PARTS LIST ..................................... 68~77

After your Panasonic battery is fully charged;

   While in use (TALK)

near the base unit*

8–9 hours

away from the base unit

3–4 hours

   While not in use (Stand-By)

14 days

  *Within about 10 feet (3 m)

• Battery life may be shortened depending on usage conditions, such as viewing the Caller ID

Caller List or directory items, and ambient temperature.

• Clean the handset and  the base unit charge contacts with a soft, dry cloth.

Otherwise the battery may not charge properly.

• If the battery is fully charged, you do not have to place the handset on the base unit until

"

Recharge

" is displayed and/or "          " flashes. This will maximize the battery life.

• The battery cannot be overcharged.

ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.