KX-TDA6178X, KX-TDA6178XJ (serv.man3) — Panasonic PBX Service Manual Supplement (repair manual)

Model
KX-TDA6178X KX-TDA6178XJ (serv.man3)
Pages
43
Size
1.87 MB
Type
PDF
Document
Service Manual Supplement
Brand
Device
PBX / 24-PORT SINGLE LINE TELEPHONE EXTENSION WITH CALLER ID
File
kx-tda6178x-kx-tda6178xj-sm3.pdf
Date

View Panasonic KX-TDA6178X / KX-TDA6178XJ (serv.man3) Service Manual Supplement online

ORDER NO. KMS1301606SE
24-Port Single Line Telephone Extension with Cer ID
Model No.
KX-TDA6178X 
KX-TDA6178XJ
(for Europe, Asia Oceania, Middle Near East, Latin
America, Russia and Africa)
TABLE OF CONTENTS
PAGE
PAGE
1 CHANGES----------------------------------------------------------- 2
1.1. Subject ------------------------------------------------------ 2
1.2. Specifications ----------------------------------------------- 2
1.3. Technical Descriptions ----------------------------------- 3
1.3.1. Block Diagram ----------------------------------------- 3
1.3.2. Circuit Operation -------------------------------------- 4
1.4. Troubleshooting Guide ----------------------------------13
1.5. Schematic Diagram --------------------------------------20
1.5.1. Block Diagram ----------------------------------------20
1.5.2. No.1 -----------------------------------------------------21
1.5.3. No.2 -----------------------------------------------------23
1.5.4. No.3 -----------------------------------------------------25
1.5.5. No.4 -----------------------------------------------------27
1.5.6. No.5 -----------------------------------------------------29
1.5.7. Waveform ----------------------------------------------31
1.6. Printed Circuit Board-------------------------------------33
1.6.1. Component View-------------------------------------33
1.6.2. Bottom View-------------------------------------------34
1.7. Replacement Parts List ---------------------------------35
Please file and use this supplement manual together with the service manual for Model No. KX-
TDA6178X,KX-TDA6178XJ Order No. KMS0803476CE.
2
KX-TDA6178X / KX-TDA6178XJ
1 CHANGES
1.1.
Subject 
KX-TDA6178X
KX-TDA6178XJ
SUFFIX LOCATION
1.2.
Specifications
Change from the Original Service Manual Section 3.
Suffix
Reason for suffix change
E to F
Change PCB for VE and Change Software (U2Q1AE
→U2Q1AG) for improvement market quality.
Suffix
Reason for suffix change
H to I
Change PCB for VE and Change Software (U2Q1AE
→U2Q1AG) for improvement market quality.
Functional Block
Functional contents
Extension Interface
Number of Ports
24 ports
SLT Interface
-26V 26mA Feeding function
Dial-pulse signal detecting function
DTMF signal detecting function
Bell signal issuing function
Hook detecting function
Ringtrip detecting function
2W/4W converting function
Surge protective function
CODEC function
• Test function (Loop back, Tone generation)
• Programmable digital filtering function
• Serial interface function
• PIO function
DTMF Receiver
24 lines for each port
Caller ID (FSK)
24 lines for each port
On-board Ringer
20/25Hz 65Vrms
Phase control (Three-phase / Four-phase)
On-board DC/DC Power Supply
Input +15V
Output +3.3V
Input +40V
Output : VBAT(The required negative battery voltage). 
The battery voltage generation circuit intelligently tracks the VBAT voltage to the optimal value under each
operating state (e.g. on-hook, off-hook, ringing, etc.)
Power Failure Forwarding Function
4 lines supported
ASIC
EC bus interface function
H.100 bus interface function, Digital PLL function
Local bus interface function
Time switch function, Gain controlling function, FIFO/DPRAM function
Intelligent PIO function
Control Unit
CPU
SH-1/SH7020 (12.288MHz)
Flash ROM
512Kbyte
SRAM
128Kbyte
PLD
• Interface between codec and CPU
• Lattice MachX02 LCMXO2-640HC-4TG100C
LED Display Circuit
Card status indicating LED: Two colors (Red/Green)
External Interface Connector
Extension interface
50pin Amphenol connector: 1
Power failure forwarding 4pin modular jack: 1
3
KX-TDA6178X / KX-TDA6178XJ
1.3.
Technical Descriptions
Change from the Original Service Manual Section 5
1.3.1.
Block Diagram
ECSLC24 BLOCK DIAGRAM
PLD 
TACKER/
SAMSON
Backboard
BB Connector
OSC16.3 8
4 M
OSC 
12.288M 
EC-Bus
CT-Bus 
15V 
Card_ID 
FLASH 
(512KB) 
SRAM 
(128KB) 
PCM-HW 
Serge
PFT 
Jack
T/R 
PFT            
Relay 
T/R 
PFT 
Jack
SLIC/CODEC  
2ch 
Port1 
SCI(7pin) 
DC/DC 
3.3V 
FPGA_INT 
BELL_SYNC 
nHALT 
nIRQ1 
BELL_SYNC 
FPGA_INT 
Diag T/R 
nHALT 
40V 
Si32261
Diag 
Diag T/R 
nCS0
nCS1  
nCS2
nCS3 
nCS[3: 0] 
nIRQ1 
CPU 
nIRQ0 
nIRQ1 
nIRQ3 
Port4 
Port3 
Port2 
Port6 
Port5 
PFT      
 
Relay 
Port7
8
Port 23 24 
Port 21 22 
Port 19 20 
Port 17 18 
Port 15 16 
Port 13 14 
Port 11 12 
Port 9
10 
Si32261
Si32261
SPI 
C_CS[0:11]
C_INT[0:11]
nIRQ2 
Local 
Control 
Bus 
C_CS[0]  
C_CS[1]  
C_CS[2]  
C _INT[0]
C_INT[1]  
C_INT[2]  
C_INT[3]  
C_CS[3]  
PCM_HW 
SPI 
C_INT[4]  
C_CS[4]  
PCM_HW 
SPI 
C_INT[5]  
C_CS[5]  
PCM_HW 
SPI 
C_INT[6]  
C_CS[6]  
PCM_HW 
SPI 
C_INT[7]  
C_CS[7]  
PCM_HW 
SPI 
C_INT[8]  
C_CS[8]  
PCM_HW 
SPI 
C_INT[9]  
C_CS[9]  
PCM_HW 
SPI 
C_INT[10]  
C_CS[10]  
PCM_HW 
SPI 
C_INT[11]  
C_CS[11]  
PCM_HW 
SPI 
Port8
Port7
Port10
Port9 
Port12 
Port11 
Port14 
Port13 
Port16 
Port15 
Port18 
Port17 
Port20 
Port19 
Port22 
Port21 
Port24 
Port23 
Backboard
Con.
OSC32M 
Program
connector
Note1.Group of Signal lines
Local Control
 Bus
:
 connect to PLD
ADR[4:0],DATA[15:0], nWE , nR D ,nWAIT , CKIO
PCM - HW :
HWCLK
 ,HWFH
 ,DHW
 ,UHW
SPI :
SCLK
 ,DOUT
 ,DIN
LED x 2 
40V  
Serge
DCDC
DCDC  
40V  
Relay
control
circuit
PR_SET
PF_RELAY
T/R
T/R
PFT  
Relay
PFT  
Relay
Serge
DCDC
Serge
DCDC
4
KX-TDA6178X / KX-TDA6178XJ
1.3.2.
Circuit Operation
1.3.2.1.
Control-System Circuit
1.3.2.1.1.
CPU Peripherals
• CPU (System clock: 12.288 MHz)......IC601
Data bus: 16bit, Address bus: 23bit
• Flash ROM (512Kbyte)......IC602
Flash memory consists of two areas: boot space and administration space.
Administration program can be rewritten through downloading.
• SRAM (1Mbit)......IC603
Used for the data buffer for CPU work area, and SLT communication.
• Reset
Resets of an MCSLC24 card are roughly classified into the two kinds: ASIC reset and LPR reset.
After the release of the ASIC reset, the LPR reset is released by the soft reset from the side of the main card and the LPR pro-
gram is booted.
Type of reset
Reset method
Specification
ASIC reset
ASIC reset is reset under the AND condition of reset signals (negative logic)
listed below.
Power-on reset
Reset by reset IC
Hard reset from the main bus
Reset by EC_RST signal
Soft reset from the main bus
Released after the specified time
LPR reset
Soft reset from the main bus
Low active
Reset pulse width: 1.6 microseconds or more
Page of 43
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Here you can view online or download Panasonic KX-TDA6178X / KX-TDA6178XJ (serv.man3) Service Manual Supplement in pdf. This Service Manual Supplement can help you recover, restore, fix, disassemble and repair Panasonic KX-TDA6178X / KX-TDA6178XJ (serv.man3) PBX. Information contained in Panasonic KX-TDA6178X / KX-TDA6178XJ (serv.man3) 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).