KX-TCD961GB - 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, 4

DISASSEMBLY INSTRUCTIONS ......................................... 5

SETTINGS ........................................................................ 6~8

OPERATION ................................................................... 9~15

HOW TO REPLACE THE RF UNIT OF HANDSET ............ 16

CIRCUIT BOARD AND WIRING CONNECTION

DIAGRAM (BASE UNIT) ...... 17~18

SCHEMATIC DIAGRAM (BASE UNIT) ............................... 19

SCHEMATIC DIAGRAM (HANDSET) ................................. 20

CIRCUIT BOARD AND WIRING CONNECTION

                                         DIAGRAM (HANDSET) .............. 21

BASE UNIT OPERATIONAL .............................................. 22

BLOCK DIAGRAM RF UNIT (BASE UNIT) ........................ 23

BLOCK DIAGRAM BASEBAND SECTION

                                        AND LINE INTERFACE .............. 24

CIRCUIT OPERATION (BASE UNIT) ........................... 25~34

 BLOCK DIAGRAM RF UNIT (HANDSET) .............................. 35

 BLOCK DIAGRAM BASEBAND SECTION

(HANDSET) ..................................... 36

  CIRCUIT OPERATION (HANDSET) ................................ 37~42

ADJUSTMENT (BASE UNIT) ................................................ 43

ADJUSTMENT (HANDSET) .................................................. 44

CHECK PROCEDURE (BASE UNIT) .............................. 45~47

CHECK PROCEDURE (HANDSET) ................................ 48, 49

TROUBLESHOOTING GUIDE ........................................ 50~58

CABINET AND ELECTRICAL

        PARTS LOCATION (BASE UNIT) ................................. 59

CABINET AND ELECTRICAL

        PARTS LOCATION (HANDSET) ................................... 60

ACCESSORIES AND PACKING MATERIALS ...................... 61

REPLACEMENT PARTS LIST (BASE UNIT) .................. 62~65

REPLACEMENT PARTS LIST (HANDSET) .................... 66~67

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.