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 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
next
phone
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
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| @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 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
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 © pin and @ pin, with 4 capacitor (10 LF).
2. Connect the frequency counter and oscilloscope.
@ side...1C4 © pin
Oside...1C4@ pin
3. Adjust VR2 for fH410 Hz on the frequency
counter reading (Refer to below table).
Component View
@ fl Adjustment
1. Connect IC5@ pin and @ pin, with a capacitor (10 pF).
2. Connect the frequency counter and oscilloscope.
@ side...IC5 © pin
O side...IC5 @ pin
3. Adjust VR3 for fl £10 Hz on the frequency
counter reading (Refer to below table).
Label No.
(Bottom of the cradie)

x
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