Panasonic KX-TS2350CAB User manual

© 2006 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-TS2350CAB
KX-TS2350CAC
KX-TS2350CAH
KX-TS2350CAR
KX-TS2350CAW
Integrated Telephone System
Black Version
Blue Version
Gray Version
Red Version
White Version
(for Kazakhstan)
(for Uzbekistan)
Telephone Equipment
ORDER NO. KM40608170CE

1 ABOUT LEAD FREE SOLDER (PbF: Pb free) 3
1.1. Suggested PbF Solder 3
1.2. How to Recognize that Pb Free Solder is Used 4
2 FOR SERVICE TECHNICIANS 5
3 OPERATING INSTRUCTIONS 6
3.1. Location of Controls 6
3.2. Connection 6
3.3. Troubleshooting 6
4 DISASSEMBLY INSTRUCTIONS 7
5 TROUBLESHOOTING GUIDE 8
5.1. Service Hints 8
5.2. Pulse Dialing Problems 8
5.3. Problems With the Handset 9
5.4. Tone Dialing Problems 9
5.5. Problems With Ringer 10
5.6. How to Check IC1 (Scanning to the key) 11
6 BLOCK DIAGRAM 12
7 CIRCUIT OPERATIONS 13
7.1. Telephone Line Interface and Pulse Dial Circuit 13
7.2. Tone Dial Circuit 13
7.3. Power Circuit and Redial Back-up Circuit 14
8 OPTION JUMPER TABLE 15
9 CPU DATA 16
10 CABINET AND ELECTRICAL PARTS LOCATION 17
11 ACCESSORY AND PACKING MATERIALS 18
12 TERMINAL GUIDE OF ICs TRANSISTORS AND DIODES 19
13 REPLACEMENT PARTS LIST 20
13.1. Base Unit 20
13.2. Accessories and Packing Materials 21
14 FOR SCHEMATIC DIAGRAM (SCHEMATIC DIAGRAM) 23
15 SCHEMATIC DIAGRAM 24
16 CIRCUIT BOARD 27
16.1. Main (Component View) 27
16.2. Main (Flow Solder Side View) 28
16.3. Operation (Flow Solder Side View) 29
Note:
Because section 3 of this manual is an extract from the operating instructions for this model, it is subject to change without notice.
You can download and refer to the original operating instructions on TSN Server for further information.
CONTENTS
Page Page
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

1 ABOUT LEAD FREE SOLDER (PbF: Pb free)
Note:
In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that
contains lead.
We will use PbF Solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),
Silver (Ag), and Copper (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder.
Caution
• • •
• PbF solder has a melting point that is 50°F ~70°F (30°C ~ 40°C) higher than Pb solder. Please use a soldering iron with
temperature control and adjust it to 700°F ± 20°F (370°C ± 10°C).
• • •
• Exercise care while using higher temperature soldering irons.:
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
• • •
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F (600°C).
• • •
• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See the figure below).
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
manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other
materials.
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.
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

1.2. How to Recognize that Pb Free Solder is Used
(Example: Main P.C.B.)
IC2
13
1
14
85
IC1 28
CN1
123456789101112
PbF
Marked
(Component View)
Note:
The location of the “PbF”mark is subject to change without notice.
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

2 FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1.Cover the plastic parts boxes with aluminum foil.
2.Ground the soldering irons.
3.Use a conductive mat on the worktable.
4.Do not touch IC or LSI pins with bare fingers.
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

3 OPERATING INSTRUCTIONS
3.1. Location of Controls
3.2. Connection
3.3. Troubleshooting
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

4 DISASSEMBLY INSTRUCTIONS
Shown in Fig —.To remove —.Remove —.
1Cabinet Cover Screws (2.6 ×10).............. (A) ×5
2P.C. Boards Remove the P.C.Boards
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

5 TROUBLESHOOTING GUIDE
5.1. Service Hints
SYMPTOM CURE
No Tone Dialing Check IC1, Q2, Q1, C22 and VR1.
Dead Check IC1, Q2, Q1 and D17.
Rings, no dial tone, no pulse or tone dial Check Q1, Q2, D17, Q3 and IC1.
No rings Check C1, R2 and IC2.
No volume Handset Check IC1, VR1, C15 and C22.
Buttons stick under upper cabinet assembly. From key board Adjust the setting of buttons.
No pulse dial Check Q1, Q2 and IC1.
5.2. Pulse Dialing Problems
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

5.3. Problems With the Handset
5.4. Tone Dialing Problems
9
KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW

5.5. Problems With Ringer
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KX-TS2350CAB / KX-TS2350CAC / KX-TS2350CAH / KX-TS2350CAR / KX-TS2350CAW