KX-TS85GB, KX-TS85GW - Panasonic Telephone Service Manual (repair manual). Page 2

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SERVICE CODE PROGRAMMING .................................. 15, 16

CIRCUIT BOARD (OPERATION) ........................................... 17

CIRCUIT BOARD AND WIRING CONNECTION ............. 19, 20

SCHEMATIC DIAGRAM .......................................................... 21

BLOCK DIAGRAM .................................................................. 22

CIRCUIT OPERATIONS .................................................. 23~25

TROUBLE SHOOTING GUIDE ........................................ 26~28

CABINET AND ELECTRICAL PARTS LOCATION ................. 29

ACCESSORIES AND PACKING MATERIALS ........................ 30

REPLACEMENT PARTS LIST ......................................... 31~33

LOCATION OF CONTROLS ...................................................... 2

DISPLAY .................................................................................... 3

CONNECTION ........................................................................... 4

OPERATIONS ........................................................................ 5~8

DISASSEMBLY INSTRUCTIONS ............................................... 9

HOW TO REPLACE FLAT PACKAGE IC ................................. 10

CPU DATA ......................................................................... 11~13

IC BLOCK DIAGRAM ............................................................... 14

TERMINAL GUIDE OF IC'S, TRANSISTORS AND DIODES .... 14

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.

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.

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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.

5

2

1

4

7

3

6

9

GHI

JKL

TUV

MNO

DEF

R

ABC

PQRS

WXYZ

8

0

Headset Jack

Ringer Indicator

Display

One-Touch Auto 
Dial Buttons

Lower Button

Recall Button

Program Button

 Mute Buttons

Auto Button

Redial/Pause Button

Speakerphone Button 
and Indicator

               ,       
Volume Buttons

Microphone

Tone Button