Read Panasonic KX-TDA6174XJ / KX-TDA6174X Service Manual online
2 FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
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.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch IC or LSI pins with bare fingers.
3 GENERAL DESCRIPTION
This card is plugged into a free slot on the TDA600 systems and randomly connects up to 16 SLT devices.
The LPR is SH-1(SH7020), and the memory is composed of a 512K byte Flash Rom and a 128K byte SRAM.
It also supports a software upgrade by downloading the latest version.
The LPR is SH-1(SH7020), and the memory is composed of a 512K byte Flash Rom and a 128K byte SRAM.
It also supports a software upgrade by downloading the latest version.
4 SPECIFICATION
Functional Block
Functional contents
Extension Interface
Number of Ports
16 ports
SLT Interface
+30V 30mA 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
4ch CODEC 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
4ch CODEC function
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• CODEC function
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• Power down function
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• µ/A Iaw switching function
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• Test function (Loop back, Tone generation)
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• Programmable digital filtering function
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• Serial interface function
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• PIO function
DTMF Receiver
16 lines for each port
On-board Ringer
20/25Hz 75Vrms
Phase control (Three-phase / Four-phase)
Phase control (Three-phase / Four-phase)
On-board DC/DC Power Supply
Input +15V
Output +5V, +3.3V
Input +40V
Output for Bell ringing relay: +160V, -100V
Output +5V, +3.3V
Input +40V
Output for Bell ringing relay: +160V, -100V
Power Failure Forwarding Function
4 lines supported
Self-Diagnostic Function
Carried out with outside-line interface in a pair (only one port)
Speech path test, Dial pulse test, DTMF test
Speech path test, Dial pulse test, DTMF test
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
Designated telephone control interface function (HDLC included)
Intelligent PIO function
H.100 bus interface function, Digital PLL function
Local bus interface function
Time switch function, Gain controlling function, FIFO/DPRAM function
Designated telephone control interface function (HDLC included)
Intelligent PIO function
Control Unit
CPU
SH-1/SH7020 (12.288MHz)
Flash ROM
512Kbyte
SRAM
128Kbyte
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: 2
5
KX-TDA6174XJ / KX-TDA6174X
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