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

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.
9
KX-TS2382RUB/KX-TS2382RUW 
5 Location of Controls and Components
Refer to the Operating Instructions.
Note:
You can download and refer to the Operating Instructions (Instruction book) on TSN Server.
6 Installation Instructions
Refer to the Operating Instructions.
Note:
You can download and refer to the Operating Instructions (Instruction book) on TSN Server.
7 Operating Instructions
Refer to the Operating Instructions.
Note:
You can download and refer to the Operating Instructions (Instruction book) on TSN Server.
7.1.
For Service Hint
7.1.1.
To Release the Establishment of Dial Lock
If the current password is forgotten, follow this procedure, you will be able to establish a new password.
10
KX-TS2382RUB/KX-TS2382RUW
8 Troubleshooting Guide
8.1.
Service Hints
8.2.
Pulse Dialing Problems
11
KX-TS2382RUB/KX-TS2382RUW 
8.3.
Tone Dialing Problems
8.4.
No Ringing Sound When Ring Signal is Input
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