DOWNLOAD Panasonic KX-TS2382RUB / KX-TS2382RUW Service Manual ↓ Size: 1.99 MB | Pages: 29 in PDF or view online for FREE

Model
KX-TS2382RUB KX-TS2382RUW
Pages
29
Size
1.99 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / INTEGRATED TELEPHONE SYSTEM
File
kx-ts2382rub-kx-ts2382ruw.pdf
Date

Panasonic KX-TS2382RUB / KX-TS2382RUW Service Manual ▷ View online

5
KX-TS2382RUB/KX-TS2382RUW 
2.1.1.
Suggested PbF Solder
There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper
(Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu) or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the manufac
turer's specific instructions for the melting points of their products and any precautions for using their product with other materi-
als. The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3 mm, 0.6 mm and 1.0 mm. 
2.2.
Discarding of P. C. Board
When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.
6
KX-TS2382RUB/KX-TS2382RUW
3 Specifications
Note:
• Design and specifications are subject to change without notice.
7
KX-TS2382RUB/KX-TS2382RUW 
4 Technical Descriptions
4.1.
Block Diagram
D1
0
1
T
R
IC
1
MI
C
O
N
R
in
g
er
 i
n
d
ic
at
io
n
 L
E
D
LE
D
1
Li
ne
ON
/O
F
F
H
and
se
t
R
e
ce
iv
in
g
Am
p
Si
de
to
ne
Br
id
ge
 (2
AP)
D1
0
6
D201
C1
R1
Vo
l
Ring
o
u
t
R
ingd
e
t
Vd
d
Vs
s
XO
U
XI
N
X1
Handset
KX-TS2382  BLOCK DIA
GRAM
SP
MIC
Q101, Q103
Q107
Q301, Q306, Q308
Q401
Q303, Q304, Q305
Buzz
er
Handset
Sending
Amp
Handset
V
o
lume
Control
D6
D102
D4
Ring detect
circuit
Ringer Out 
ON-OFF
circuit
OFF HOOK
OFF HOOK
Keyboard
Switch
8
KX-TS2382RUB/KX-TS2382RUW
4.2.
Circuit Operation
4.2.1.
Power supply circuit
The set is powered from the line, 48V/24V.
• Off hook
LINE 
→ Q101 → Q107 → R119 → D106 → D201 → D203 → Vdd (pin7 of IC1)
• On hook
LINE 
→ R101 → R102 → D101 → SW1(pin 5-6) → R13 → D102 → D6 → Vdd (pin7 of IC1)
4.2.2.
Bell Ringer Circuit
When the bell signal is input from LINE to T/R (when the telephone rings), the signal is detected and output by micon to the
buzzer via the following path :
• Bell Detection circuit
T / R 
→ C1 → D2 → R2 → Q1 → RINGDET (pin 27 of IC1)
• Bell Output circuit
Pin 15 of IC1 
→ Q3 → Q2 → R9 → SW2/3 → Buzzer
4.2.3.
Telephone Line Interface
4.2.3.1.
Circuit operation
• On hook
Q101 is OFF, on-hook condition where DC loop is disconnected and voice signal flow is cut.
• Off hook
During Off-Hook, pin 4_6 of SW1. Q101 is ON, providing an off-hook condition (active DC current flow through the circuit) and
the following is the signal flow :
→ POS101 → L101 → D101(+) → Q101 → Q107 → R119 → D106 → D101(-) → L102 → R
• Receiving signal flows:
LINE 
→ Q101 → C114 → C301 → R301 → Q301 → C305 → R307 → C306 → Q306 → C310 → R315 → Q308 → C315 →
R318 
→ SP (handset)
• Transmission signal flows:
MIC (handset) 
→ C402 → R402 → R405 → C405 → Q401 → R409 → C410 → Q107 → Q101 → LINE
• Pulse Dial
A pulse signal switches repeatedly between high and low logic is output from IC1 (pin 11), on and off the line loop, generating the
pulse dial signal.
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