Panasonic Kx-t2388 Quick start guide

Servi

ADTOLORIE™

EASA-PHONE:

Integrated

Telephone

System

with

a

Single

Micro

Cassette

Ne,

SPECIFICATIONS

|

General:

Power

Source:

Power

Output:

Speaker:

)

Microphone:

Jacks:

Dimensions:

Weight:

Telephone

Section:

&.

Memory

Capacity:

Diat

Speed:

Redial:

Pause:

Ma

ORDER

NO.

KM49008259C1

nual

and

Technical

Guide

Telephone

Equipment

KX-T2388

Tape

Deck

Section:

AC;

AC

adaptor

KX-A11-W

(DC

12

V)

Outgoing

Message

350

mW

(max.)

(OGM),

Unit;

5

cm

(12142”)

PM

dynamic

Handset;

3

cm

(t%6”)

PM

magnetic

(ICM):

type

receiver

unit

Condenser

microphone

Tape

Speed:

Telephone

line,

DC

IN

Wow

and

Fiutter:

5x819/16<32"/32”

Motor:

(with

handset)

[127

(W)x224

(D)x93

(H)

mm]

1.9

Ibs.

(0.9

kg)

without

cassette

tapes

12

telephone

numbers,

up

to

30

digits

for

each

station/3

telephone

numbers,

up

to

30

digits

for

each

Direct

Call

Button

Tone

(OTMF)/Pulse

(10

pps)

Last

dialed

telephone

number

every

time

redial

button

is

pressed

Time

delay

(3.5

seconds

per

pause)

.

Incoming

Message

Single

Micro

Cassette

(MC-30)

2.4cm/s

0.58%

(WRMS)

Electrical

governor

motor

Design

and

specifications

are

subject

to

change

without

notice.

Panasonic

Matsushita

Services

Company

Division

of

Matsushita

Electric

Corporation

of

America

50

Meadowland

Parkway,

Secaucus,

New

Jersey

07094

Matsushita

Electric

of

Canada

Limited

5770

Ambler

Drive,

Mississauga,

Ontario,

L4W

2T3

Panasonic

Sales

Company,

Division

of

Matsushita

Electric

of

Puerto

Rico,

Inc.

San

Gabriel

Industrial

Park

65th

Infantry

Ave.

Km.9.5

Carolina,

Puerto

Rico

00630

KX-T2388

|

When

you

mention

the

serial

number,

write

down

the

11

digits.

The

serial

number

may

be

found

on

the

label

affixed

to

the

bottom

of

the

unit.

TABLE

OF

CONTENTS

Page

Connection

sic.

isiewtiactiindtiinnindaie

2

~~

Circuit

Board

(for

Handset)...........0.cecceee

eee

15

Location

of

Controls

............ccccccecsseeseceeseees

3

Block

Diagram

.............:::ccceeeeeesereeees

Loesdbetees

acess

16

Disassembly

Instructions

.............c

ee

cceeeeeee

4

=

Circuit

Operations

2...

cece

ceeeeeettees

17~31

CPU!

Data

see

csseecicerotecth

sas

va

cteeiece

ssscveesics

5,6

Howto

Replacement

Flat

Package

IC

.................

32

IG

Block

Diagram

...........ccccccccccceceecssseseeeseeeees

7

Trouble

Shooting

Guide

................c

cee

33~40

Measurement

and

Adjustment

Method

..............

8

Cassette

DECK

Parts

Location

......0.

41

Schematic

Diagram

(for

Cradle)

....................

9,10

Cabinet

and

Electrical

Parts

Location

........000......

42

Circuit

Board

and

Accessories

&

Packing

Materials

...............00.0.

43

Wiring

Connection

(for

Cradle)

.........

11,12

Extension

Cord

Connecting

Method

..................

43

Schematic

Diagram

(for

Handset)

................

13,14

Replacement

Parts

List

0.000

ee

44~46

Terminal

Guide

of

IC's,

Transistors

and

Diodes

..14

Operations

...............ccccccccscsccceseececseeseceeeene

47~50

CONNECTION

Connect

as

shown.

Place

the

cord

into

the

holder.

AC

adaptor

(KX-A11-W)

Power

outiet

(AC

120V,

60Hz)

To

telephone

line

Single-Line

Modular

jack

(RJ11C)

Fig.

1

|

KX-T2388

LOCATION

OF

CONTROLS

=

Autores

j)

CO)

ons

Poe

Panason

SH

(im

@

DIALING

MODE

selector:

Used

to

change

the

dialing

mode

TONE

or

PULSE.

@®

DIRECT

CALL

buttons:

‘dialing.

@

Dial

key

pads:

|

Used

to

dial

or

program

phone

numbers.

@

HOOK/FLASH

button:

~

©

CPC

selector:

Selector

for

call

waiting

service.

VOLUME

control

Used

to

store

phone

numbers

and

to

make

calls

‘using

one-touch

@

Number

of

rings

(RINGS)

selector:

Used

to

select

the

number

of

rings

that

it

takes

for

the

unit

to

answer.

@®

Ringer

volume

(RINGER)

selector

@

POWERIIN

USE

indicator

Flash

usage...Used

to

access

some

of

the

feature

of

your

host

PBX

@

POWER

button:

yo

by

pressing

itlightly.

=.

;

Hook

usage...Used

to

terminate

the

telephone

line

by

pressing

it

"firmly

(for

1~2

seconds).

You

can

dial

J

number

without

hanging

up.

©

REDIAL

button:

Used

to

redial

the

last

dialed

phone

number.

©

AUTO/STORE

button:

Used

to

store

phone

numbers.

@

Program

(PROG.)

button:

Used

to

start

and

complete

the

programming

procedures.

PAUSE

button:

Used

to

enter

a

pause

in

phone

numbers

when

programming

or

dialing.

Used

to

turn

on

and

off

the

unit.

The

POWER/IN

USE

indicator

lights

when

the

unit

is

turned

on.

@®

OGM

REC

button:

Used

to

record

the

Outgoing

Message.

OGM

PLAY

button:

Used

to

play

the

recorded

Outgoing

Message.

@

ANSWER/CALLS

indicator

Rewind

(REW)

button:

Used

to

rewind

the

cassette

tape.

‘MEMO/2

WAY

button:

Used

to

record

a

memo

message

or

a

telephone

conversation.

@)

PLAYBACK/PAUSE

button:

Used

to

play

back

the

recorded

Incoming

Messages

and

to

stop

the

ICM

tape

temporarily

during

ICM

playback.

-@

Microphone

(MIC)

KX-T2388

EC

OOO

CI)

©

O2eO

O@oO

DISASSEMBLY

INSTRUCTIONS

ayy.

Fig.

4

Fig.

5

Fig.

6

Fig.

7

fi

i

K

\=-

i

\

Woy

LL

‘lis!

[oKe)

i

L

. .

|

@eo.

©,

1

Fig.

8

Fig.

9

Fig.

10

Peles

2

|

568

|

iisse—=

Remove

the

cabinet

cover.

Remove

the

Main

Printed

Circuit

Board

OON

OMAR

WN

KX-T2388

«<For

Cradie>

1C1:

PQVI4149HA35

Program

ROM:

4K

Internal

RAM:

128

x

4

Kbit

Clock

Frequency:

4MHz

Power

Supply

Voltage:

5.4V

or

5V

23

[NC

eo

ae

ee

Osc2

Leey

|

“ietive

Auto

Active

Lae

a

|

_—on__

|

OFF

_]

ON

|

ORR

oe

—"]

ae

Ec

ieee

s

_——T_

Remote

ats

Ph

Nee

eee

noes

aa

Key

Push

ao

PON

OR

ON

(e

<Ore

|

Rest

fo

"Ta

_

ON

|

oF

__|

KX-T2388

<For

Handset>

1C1:

PQVI451N9968

Program

ROM:

4K

byte

(8

bit)

Internal

RAM:

768

byte

(4

bit)

System

Clock

Frequency:

480

kHz

Power

Supply

Voltage:

2.2~6V

TONE

OUT

Hook

Input

Mute

Control

Output

Pulse

Dial

Output

Backup

Signai

Backup

Signal

Backup

Signal

Backup

Signal

Key

Tone

Output

Pull

Up

Power

Output

GND

Terminal

DTMF

Signal

Output

OONOGA

WN

—

Active

Key

Tone

Output

Active

System

Clock

System

Clock

System

Reset

Signal

Line

Power

Input

Key-Scan

Output

Key-Scan

Output

Key-Scan

Output

Key-Scan

Output

+

Power

Source

Terminal

Normal

bie

ee

|

Tone/Pulse

SW

input

Program

Key

Input

Disable

Enable

Option

Data

Input

;

Option

Data

Input

Store

LED

Output

Control

Circuit

OFF

Make

Normal

Disable

Normal

==

Reset

Standby

i

Let

|

NS

C3.

PQVIBA8205

Fig.

11

IC

BLOCK

DIAGRAM

1C4,5

PQVIIRSNO5

Fig.

12

C2

PQVISC79100P

(for

Cradle)

PRO

BUFI

ALC

CPI

CPO

KX-T2388

MEASUREMENT

AND

ADJUSTMENT

METHOD

Notes:

1.

Make

sure

the

heads

are

clean.

2.

Make

sure

the

capstan

and

pressure

roller

are

clean.

3.

Room

temperature

for

measuring

and

adjusting:

20+5°C

(68+9°F)

4.

Test

equipments

are

not

treated

as

replacement

parts.

MEASUREMENT

&

ADJUSTMENT

REMARKS

1.

Play

back

test

tape

(QZZMWA).

2.

Adjust

screw

(B)

shown

in

fig.

B

for

maximum

output

at

SP

terminal.

(Test

equipment

connection

is

shown

below.)

1.

Head

azimuth

adjustment

“Record/playback

head

Test

tape

Playback

mode

VTVM

Oscilloscope

Fig.

A

1.

Play

back

test

tape

(QZZMWA).

2.

Adjust

VR4

for

2990+

1

0

Hz

on

frequency

counter

reading.

2.

Tape

speed

adjustment

SP

terminal

PULL

Adjustment

@

fH

Adjustment

1.

Connect

IC4

©

and

@

pin,

with

4

capacitor

(10

LF).

2.

Connect

the

frequency

counter

and

oscilloscope.

@

side...1C4

©

Oside...1C4@

3.

Adjust

VR2

for

fH410

Hz

on

the

frequency

counter

reading

(Refer

to

below

table).

Component

View

@

fl

Adjustment

1.

Connect

IC5@

and

@

pin,

with

a

capacitor

(10

pF).

2.

Connect

the

frequency

counter

and

oscilloscope.

@

side...IC5

©

O

side...IC5

@

3.

Adjust

VR3

for

fl

£10

Hz

on

the

frequency

counter

reading

(Refer

to

below

table).

Label

No.

(Bottom

of

the

cradie)

x

|

_

Kx-T2as8

KX-T2

-8t

SCHEMATIC

DIAGRAM

(fr

$

Jd

H/S

JACK

Backup

|

O

{4

26

M0.04-7

RSO-

56K

a

A

resort

ig

S.gra

—

[S|

‘

CRADLE)

¥2

me

10

ee

Le

PB

SI

POWER

NENG

$4

OGn

Pry

$5

i)

i,

|;

i

OC

JACK

ESAT

OS

REGULATOR.

T2024.

|

Os

6,

BY

eee

Sere

ee

eee

neh

obo

|

eee

O20

gen

2soo'or

WBE

v9

THT

obs

¢

Ea

Q)

wo

a

Jed

z

ee

=909

&

g

JS

e

x

E

or

i

Oe

oy

i

oe

esetonmnseranst

crater

i

nosotros

nanan

tiie

soccer

svananatcensninaseiesenetithauaynmn.

i

CUIT

BOARD

AND

WIR!

H

~

i

Q

i

id

fe)

=

et

Aare

tetas

+

:

es

.

=

5

RY

Ca

;

a3

Lenyuerngenemnmre

id

pon

ca

tesa

ir

sa

a.

ae

=

fe

ye

a

onsen

Cl

mM

fat

5

i

H

i

cor

mes

i

pmteaesomncronsiimetcerantonencnacennientererontt

=

Pt

a

rmmpmonmeeenermated

“ang

iia

sone

MoT

Sncenanennnenttg

"spanner

ry

f

\

}

"anceauasreeounpnveneninanminacer

nein.

emenom

:

i

ewinnmmiitionnanainttncatiamennn

enti

-

f

€

s,

i

cit

tii

aii

Sh

tobe

teense

Setmsesnasanecesrmatatin

estas

ep

eee

iain

emf

enna

aa

<=

j

a

0

“

ia

”

CONNECTION

DIAGRAM

(for

CRADLE)

i

=

10

j

eset

a

42

i

sevepotrersebaetctrcenScante

bn

onsets

petra

eNsnrssenraerict

alte

ate

wie

bse

4

Component

View

educates

Ae

SEINE

REDE

CERES

ESHOP

OA

EBAR

ISERIES

AONE

At

owith

KX-T2388

KX-T2

18:

SCHEMATIC

DIAGRAM

(for

Hi

hover

RT

27K

oe

153K

-

10.047]

=

4

OOO

Tae

)|

|

eae

Ze

coed

Ee

|

en

ee

ass

(Sy.

las

fae

[Tk

om

Figs

ea

ge

is

2

RIS

R20

10K

4.

Sw

Seon

fs)

a,

AUTO/NERGRY

1.

@-

oe

pi

ee

care)

po]

aes

3

F

st

Test

G

Note:

(For

Cradie)

(For

Handset)

eshcas

1.S1:

F

Pause

switch.

.

1.

St:

Auto

switch.

Anoge

2.S2:

Power

switch.

2.82:

—

Redial

switch.

--

3.S3:

Rewind

switch.

;

3.

$3:

Program

switch.

Commode

4.S4:

Memo/2

way

switch.

4.94:

Pause

switch.

5.

S5:

OGM

play

switch.

5.

S5:

Flash

switch.

H

6.S6:

OGMrec

switch

6.

S6:

Dialing

mode

selector

switch.

7.

S7:

|

Rings

switch.

7.

S7~9:

Direct

call

switch.

6.

S8:

C.P.C.

switch.

:

8.

$10~21:

Dialing

switch.

9.

S10:

Ringer

volume

selector

switch

in

"HIGH"

position.

10.

S101:

Hook

switch

in

“OF

F-HOOK"

position.

This

schematic

diagram

may

be

modified

at

11.

$200:

Reed

switch.

any

time

with

the

development

of

new

technology.

[3

=

\NDSET)

3

:

9

'

10

+1

t2

TERMINAL

GUIDE

OF

IC’S,

TRANSISTORS

AND

DIODES

©)

coat

;

om

PQVTKSO261DY-

©

woo

-

2SA1625

2802240

#3

igsw

:

2

LEG

I

16.

PQVDSLZ13582

PQVIBAS215SL

2SK1398

.

POVDSLZ235R3

-

wo

i

|

“Cathode

/

pod

baat

.

a

Anode

Cathode

|

pQvDMZu2ROA

LNSE3GPPKU:

POVDMZJ2R4B

escent

sceysvianannounsort

UM@IA

queuodwieS

SCHERER

|

<

, ; : ‘

o

.

—

a

‘(WasaNvH

403)

WHDVIO

NOLLOSNNOO

ONTLIM

aNv

quvog

LINDHIO,

|

S|

Big

WAND

seig

pedH

ases3

x

fg

puooay

saa

XOA

WNDU

yesey

Ndd

[7a]

peeH

did

+

&

wNIID

10QU0d

WYL

ae

Be:

dINV

AV1d/03Y

aa

“‘dNV

LNO/NI

3SNIT

a

‘

wnaig

dV

OW

dNV

dS

aaug

=

6

i

:

esiaes

sabunid

eich

7a

jeuBis

ajoway

5

Ze)

:

bLO-6D

40}0818Q

hee

:

WNDID

9d9

BAU

JOIOW

;

aoeyaiul

WV.L

:

vO

;

LtO-ZtD

‘ZOl

:

;

COLD~LOLO

a

Ee

eae

palo

)

tan

=F

1S

Seck

Woo

7

40}08}8Q

;

:

Bulg

|

’

-

“YNIID

104UOD

l

ag

pue

1ndino

4WLG

f

i

:

r

.

MOWwayy

ym

[SF

1

©

6

1

I

—

0

1

8-sd

Lols

{

I

1

i}

10ju0D

euBis

sseuppy

:

ee

\

44O/NO

pue

jeubis

1

40}8J8Ua5)

1

puke

YOIMS

Bunywsuesy

{

1

saBuiy

auoy

=|

\

asing

leg

/Buiniaday

!

\

alae

maee

TT

el

r

Po

oat

cate

et

teen

eek

COE

catty

iss

toraen

yespueH

|

tt

Ast

wnowig

io\depy

‘GL

Aiddng

49M0q

ov

INVYDVIG

NOO1d

KX-T2388

|

KX-T2388

CIRCUIT

OPERATIONS

Note:

The

circuit

diagram

may

be

modified

at

any

time

with

the

development

of

new

technology.

MITELEPHONE

LINE

INTERFACE

When

the

hook

switch

$101

is

ON

(off-hook),

the

circuit

is

closed,

and

current

is

supplied

to

the

base

of

Q2

via

the

diode

bridge

D5~D8,

and

Q2

is

ON >

Q1

is

ON

(OFF-HOOK

condition).

Q1

and

Q2

are

the

dial

palse

generating

circuits,

and

are

driven

by

the

CPU

(IC1),

when

the

collector

of

Q4

is

high

logic

level

>

Q3

is

ON —

Q2

is

OFF

and

Q1

is

OFF.

(break)

if

port

8is

LOW

—

Q3

is

OFF

>

Q2

is

ON

>

Q1

is

ON.

(make)

The

ring

signal

is

outputted

from

8

of

IC3,

and

its

volume

is

adjusted

in

3

steps

(H-L-OFF)

by

Ringer

SW

then

impressed

on

the

ceramic

sound

generator,

and

so

is

generated.

Rove

eaninntesiens

Bell

sensitivity

adjustment

R3,

C4

.........0..

Bell

frequency

setting

fH1,

fH2

R4,C3

.........06.

Repeat

frequency

setting

fL

fH1,

fH2,

fL

are

derived

from

the

following

formulas:

1

fH1

m-----n->e-noennaerorenennannennereceeenacecsenewsen

=982Hz

[a

=16.7

Hz

1.515

x

R3

x

C4

1.234

x

R4

x

C3

R3

=

82k

C4

=

0.0082

pF

R4

=

220k

C3

=

0.22

uF

fH2e1.24

x

fH1=1218

Hz

‘

The

following

shows

the

waveform

of

the

tone

ringing

IC

output:

ic3

@®pin

fH1

fH2

fL

fH1

=

982

Hz

fH2

=

1218

Hz

fL

=

16.7

Hz

Circuit

Diagram

(for

Handset)

1c1@BREAK

KX-T2388

|

Circuit

Diagram

(for

Cradle)

TEL

LINE

JACK

ae

ste}

SA1

ct

R1

PCt

R5

on

JS

©

~O

RE

og

Mi

TONE

DIAL

CIRCUIT

Functlon:

The

tone

dial

circuit

consists

of

a

DTMF

(Dual

Tone

Multi

Frequency)

signal

generator

(outputted

from

13

of

the

microcessor)

for

tone

dialing,

and

also

a

circuit

for

outputting

the

signal

to

line.

The

DTMF

circuit

identifies

inputs

from

12

keys

(1,

2, 3,

4,

5,

6,

7, 8,

9,

0,

X

and

#)

by

means

of

a

total

of

seven

frequencies,

that

is

four

low

frequencies

(Low

group)

and

three

high

frequencies

(High

group).

Circuit

Operation:

When

a

dial

key

is

presses,

a

DTMF

signal

is

outputted

from

16

of

IC1

as

an

analog

synthetic

wave.

The

signal

flow

to

the

line

is

as

follows.

13

of

IC1

>

R16

C11

>

R38

>

12

of

IC2

—

4

and

5

of

IC2.

The

DTMF

signal

is

sent

to

the

line

via

the

following

path.

IC2

is

an

amplifies

the

DTMF

signal.

is

an

amplifier

which

is

used

to

output

the

signal

to

line.

The

1

KHz

confirmation

tone

is

heard

from

the

speaker

of

the

handset.

16

of

IC1

-»

R18

-Ci2

14

of

IC2

—

4

of

IC2

—

Telephone

Line.

The

signal

combination

and

frequency

corresponding

to

each

dial

key

is

shown

below.

KX-T2388

Tone Frequencies

697

Hz+

1209

Hz+

1.5%

ee

Hz+

1336

Hz+

1.5% 1.5%

852

Hz+

1477

Hz+

1.5%

941

Hz+

1.5%

Naa

Circuit

Diagram

C6

Telephone

Line

ict

(43)

C12

R18

C1

|

co

KX-T2388

|

METAM

INTERFACE

CIRCUIT

Function:

When

the

bell

rings

in

the

answer

mode,

IC1

36

becomes

“H”

(normally

“L”)

and

Q102

goes

ON,

hence

Q101

goes

ON,

connecting

it

to

the

line.

In

other

woras,

the

DC

Joop

Tel.

line

+

D5~D8—»

Q101

>

R10

+

Q3

>

R13

-~

D5~D8

>

Tel.

line

is

formed.

The

send

signal

to

the

line

and

the

input

signal

from

the

pass

back

and

forth

via

Q3.

Circuit

Diagram

CPC

Detector

{Q4)

Remote

Signal

Line

Input

4

Detector

Signal

Line

Output

C1

@

Signa

Mi

REMOTE

SIGNAL

DETECTOR

Function:

The

remote

control

signal

passes

through

C24,

then

amplified

by

the

amplifier

consisting

of

IC6,

and

detected

by

1C4

and

IC5

(tone

detector

ICs),

The

DTMF

signal

is

a

combination

of

these

two

frequencies.

In

this

circuit

the

lower

frequency

fL

is

detected

by

IC5,

and

the

higher

frequency

fH

is

detected

by

iC4.

When

fL

is

input,

IC5

8

becomes

"L”,

and

when

fH

is

input,

IC4

pin8

becomes

“L”.

When

both

of

the

outputs

from

pin8

of

IC5

and

IC4

are

“L”,

“L”

level

are

input

to

IC1

pint5

and

34,

and

the

DTMF

signal

(remote

control

signal)

is

detected.

Circuit

Diagram

.

To

Tel

Line

KX-T2388

Mf

INITIALIZE

CIRCUIT

Function:

é

This

circuit

is

used

for

initializing

the

microcomputer

when

it

incorporates

an

AC

adapter.

Circuit

Operation:

The

voltage

is

shifted

by

D12

and

power

is

supplied

to

the

CPU.

The

voltage,

needed

to

reset

the

CPU,

is

supplies

from

the

collector

of

Q8.

When

Q8

becomes

ON

and

the

reset

terminal

voltage

drops,

the

CPU

has

been

reset,

and

the

set

can

operate

beyond

point

A

in

the

circuit

voltage

diagram.

Circuit

Diagram

Circuit

Voltage

™@

TAPE

TRANSPORT

CONTROL

Circuit

Operation:

The

timing

for

the

plunger

and

motor

which

are

used

to

operate

the

deck

is

as

shown

in

the

timing

chart.

Panasonic KX-T2388 Quick start guide

Popular Telephone manuals by other brands