KX-TDA6381X, KX-TDA6381SX — Panasonic PBX Service Manual (repair manual)

Model
KX-TDA6381X KX-TDA6381SX
Pages
76
Size
7.74 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 16-PORT ANALOGUE TRUNK CARD W/O CID
File
kx-tda6381x-kx-tda6381sx.pdf
Date

View Panasonic KX-TDA6381X / KX-TDA6381SX Service Manual online

ORDER NO. KMS1405063CE
16-Port Analogue Trunk Card w/o CID
Model No.
KX-TDA6381X
KX-TDA6381SX
(for Europe, Asia, Oceania, Middle Near East, Latin 
America, India and Africa)
2
KX-TDA6381X/KX-TDA6381SX
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. For Service Technicians  ---------------------------------3
2 Warning --------------------------------------------------------------3
2.1. Battery Caution ---------------------------------------------3
2.2. Caution--------------------------------------------------------3
2.3. About Lead Free Solder (PbF: Pb free) --------------3
2.3.1. Suggested PbF Solder -------------------------------4
2.4. Discarding of P. C. Board --------------------------------4
3 Specifications ------------------------------------------------------5
4 Technical Descriptions------------------------------------------6
4.1. Block Diagram ----------------------------------------------6
4.1.1. Block Diagram of Main Board ----------------------6
4.1.2. Block Diagram of Sub Board -----------------------7
4.2. Circuit Operations ------------------------------------------8
4.2.1. Description of Control System Circuits  ----------8
4.2.2. Description of Functions and Circuits ---------- 11
4.2.3. Power Supply Circuit ------------------------------- 17
5 Location of Controls and Components------------------ 19
5.1. Name and Locations ------------------------------------ 19
5.2. Instlling/Removing the Optional Service Cards--- 20
6 Troubleshooting Guide---------------------------------------- 26
6.1. In Case of  the Main Board is Defective ------------ 26
6.2. In Case of  the Sub Board is Defective ------------- 31
7 Miscellaneous ---------------------------------------------------- 35
7.1. How To Replace a Flat Package IC ----------------- 35
7.1.1. Preparation-------------------------------------------- 35
7.1.2. Removal Procedure--------------------------------- 35
7.1.3. Procedure --------------------------------------------- 35
7.1.4. Removing Solder From Between Pins --------- 35
7.2. Terminal Guide of the ICs, Transistors and
Diodes------------------------------------------------------- 36
7.2.1. Main Board-------------------------------------------- 36
7.2.2. Sub Board --------------------------------------------- 37
8 Schematic Diagram--------------------------------------------- 38
8.1. Main Board------------------------------------------------- 38
8.1.1. No.1 ----------------------------------------------------- 38
8.1.2. No.2 ----------------------------------------------------- 40
8.1.3. No.3 ----------------------------------------------------- 42
8.1.4. No.4 ----------------------------------------------------- 44
8.2. Sub Board-------------------------------------------------- 46
8.2.1. No.1 ----------------------------------------------------- 46
8.2.2. No.2 ----------------------------------------------------- 48
8.3. Waveform -------------------------------------------------- 50
8.3.1. Main Board-------------------------------------------- 50
8.3.2. Sub Board --------------------------------------------- 53
9 Printed Circuit Board ------------------------------------------ 55
9.1. Main Board------------------------------------------------- 55
9.1.1. Component View ------------------------------------ 55
9.1.2. Bottom View ------------------------------------------ 56
9.2. Sub Board-------------------------------------------------- 57
9.2.1. Component View ------------------------------------ 57
9.2.2. Bottom View ------------------------------------------ 58
10 Appendix Information of Schematic Diagram --------- 59
11 Exploded View and Replacement Parts List ----------- 60
11.1. IC Data------------------------------------------------------ 60
11.1.1. IC3 (ASIC)--------------------------------------------- 60
11.1.2. IC401(CPU)  I/O Port------------------------------- 62
11.1.3. IC6, IC7 of Main Board and  IC6, IC7 of
Sub Board(CODEC)-------------------------------- 63
11.2. Cabinet and Electrical Parts Location -------------- 64
11.3. Accessories and Packing Materials ----------------- 65
11.4. Peplacement Part List ---------------------------------- 66
11.4.1. Cabinet and Electrical Parts  --------------------- 66
11.4.2. Accessories and Packing Materials ------------ 66
11.4.3. Main Board Parts ----------------------------------- 66
11.4.4. Sub Board Parts------------------------------------- 72
3
KX-TDA6381X/KX-TDA6381SX
1 Safety Precautions
1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
the customer from being exposed to shock hazards.
1.1.
For Service Technicians 
• Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires,
injury or electric shock, which can be caused by improper repair work.
1. When repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
• ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
2 Warning
2.1.
Battery Caution
Danger of explosion if battery is incorrectly replaced. 
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer's instructions.
2.2.
Caution
The power socket wall outlet should be located near this equipment and be easily accessible.
2.3.
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 con-
tains lead.
We will use PbF 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
 ~ 70 F, (30 ~ 40C) higher than Pb solder. Please use a soldering iron with tempera-
ture control and adjust it to 700
 ± 20 F, (370 ± 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 figure, below).
4
KX-TDA6381X/KX-TDA6381SX
2.3.1.
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 
materials. 
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.
2.4.
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.
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Here you can view online or download Panasonic KX-TDA6381X / KX-TDA6381SX Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Panasonic KX-TDA6381X / KX-TDA6381SX PBX. Information contained in Panasonic KX-TDA6381X / KX-TDA6381SX service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).