9.3. KX-TEA308CE MAIN BLOCK DIAGRAM 17 CABINET AND ELECTRICAL PARTS LOCATION 9.4. KX-TEA308CE CO BLOCK DIAGRAM 18 ACCESSORIES AND PACKING MATERIALS 9.5. KX-TEA308CE POWER SUPPLY UNIT BLOCK 19 REPLACEMENT PARTS LIST (KX-TEA308CE) DIAGRAM 19.1. CABINET AND ELECTRICAL PARTS 10 EXPLANATION OF BLOCK DIAGRAM 19.2.
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KX-TEA308CE 23.2. LOCATION OF OPTIONAL CARDS 24.8. ACCESSORIES AND PACKING MATERIALS 23.3. DOORPHONE/DOOROPENER CARD BLOCK DIAGRAM 24.9. REPLACEMENT PARTS LIST (KX-TE82492X) 24.10. FOR THE SCHEMATIC DIAGRAM 23.4. EXPLANATION OF BLOCK DIAGRAM/CIRCUIT 24.11. SCHEMATIC DIAGRAM (KX-TE82492X) OPERATIONS 24.12. PRINTED CIRCUIT BOARD (KX-TE82492X) 23.5.
KX-TEA308CE 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).
KX-TEA308CE 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.
KX-TEA308CE 3 CAUTION 3.1. SAFETY PRECAUTIONS 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When replacing parts, use only the manufacturer´s recommended components for safety. 3. Check the condition of the power cord. Replace if wear or damage is evident.
KX-TEA308CE 4 SPECIFICATIONS 4.1. GENERAL DESCRIPTION Control Bus Original bus (16-bit, 24 MHz) Switching Space Division CMOS Crosspoint Switch Power Input 100 V AC to 240 V AC, 0.8A to 0.4A, 50 Hz/60Hz External Battery +24 V DC (+12 V DC x 2)
KX-TEA308CE 4.3.2. Maximum Cards Terminal Equipment ltem KX-TEA308 2-Port Doorphone Card 3-Port Caller ID Card 2-Channel Voice Message Card Doorphone Door Opener Pager Music on Hold (MOH) DSS Console 4.3.3. System Data ltem Max. Quantity Operator System Speed Dialling One-touch Dialling...
KX-TEA308CE 5.2. SYSTEM CONNECTION DIAGRAM • • • • Connect a display-equipped proprietary telephone (PT) to extension jack 01, as this extension is automatically designated as the manager extension.
KX-TEA308CE 8 DISASSEMBLY INSTRUCTIONS 8.1. DISASSEMBLY INSTRUCTION 1. Pull the slide button (arrow 1) to the right and, holding it, slide the cable cover upwards (arrow 2). 2. Then turn the cable cover slightly to remove it. 3. Remove the three screws (A).
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KX-TEA308CE 5. Remove the 1 screws (A). 6. Remove the power supply board cover. 7. Pull out the 4 connectors. 8. Remove the 2 screw (B) and 1 screw (A). 9. Remove the power supply board. 10. Remove the 2 screw (B).
KX-TEA308CE 10 EXPLANATION OF BLOCK DIAGRAM 10.1. MAIN UNIT (KX-TEA308CE) 10.1.1. Power Supply Circuit This power supply unit is a switching power supply. Power supply unit supplies DC voltage (+27V,+15V,3.3V) to main board and other optional cards. And this unit has an adaptor circuit to back up battery.
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KX-TEA308CE 10.1.14. OGM Circuit The 4M Serial Flash ROM is connected to CPU by the memory controller in DSP (in CPU). A maximum of 3-minute storing of OGM is possible to a serial flash ROM. 10.1.15. Ring Signal Generator Circuit This section generates the ring signal for the single line telephone.
KX-TEA308CE 11 CIRCUIT OPERATION 11.1. POWER SUPPY CIRCUIT 11.1.1. The function of the power unit are listed below AC-DC Inverter Function This function isolates and converts the AC input voltage to DC input and output of DC27V. DC-DC Converter Function This function outputs DC+15V and 3.3V from the inputted...
KX-TEA308CE 11.1.2. Control Section 1) AC-DC Inverter Function The AC input voltage is rectified and smoothed by D10-13 and C5. The obtained DC voltage is converted into a rectangular wave by the switching transistor Q1, then isolated and transduced by T1. This converted rectangular wave is rectified and smoothed by D101 and C101 to output DC27V.
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KX-TEA308CE 2) DC loop formation circuit In the off hook status, PC5 is ON. DC loop path: Tip→L1→D1→D2→D3→Q10(E-C)→Q1(C-E)→R9→R8→D3→L1→Ring At this time, the output of the photo coupler PC1 changes level from High to low. Ring→L1→D3→Q10(E-C)→Q1(C-E)→R9→R8→D3→D2→D1→L1→Tip At this time, the output of the photo coupler PC2 changes level from High to low.
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KX-TEA308CE 4) CALL ID interface circuit It is insulated by the capacitors in a COL circuit, and the call ID signal inputted from outside line is transmitted to a CALLID option card. The flow of a CALLID signal Tip→L1→C29→R54→IC4 Ring→L1→C29→R55→IC4...
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KX-TEA308CE 5) COL Bidirectional Amplifier circuit This circuit consists of bidirectional amplifier function for communication between the extensions and COL, returns loss compensation for conference, shunt function and mute function. (Composition) For transmitting signals from the extensions to COL, this circuit consists of R34, R35, R26, R27, R18, R29, C14, C15, C10, C16 and the operational amplifier (IC1).
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KX-TEA308CE 1) Conference switch Normally, pin 6 of the analog switch IC2 is low level, but during conferences, this pin becomes high level. Because, during conferences, it should compensate the return loss by connecting the balance network BN2 and the balance network BN3 in parallel.
KX-TEA308CE 11.3. CROSS POINT SWITCH CIRCUIT 11.3.1. Composition The cross point circuit composed of three cross point switch IC´s (IC601:8X16, IC602 and IC603:4X8). 1) Cross Point Switch IC Operation The cross point SW (IC601) contains a 8X16 array of cross point switches along with a 7 to 128 line decoder and latch circuits.
KX-TEA308CE 11.4. INTERCOM CIRCUIT 11.4.1. INTERCOM CIRCUIT 1) Composition This is composed of the following circuits: a) +15V power source for the extension telephones b) Hook detect for SLT and pulse dialing detect c) Bell ring trip section 2) Circuit operation a) Power supply to the telephone With the telephone off hook, a DC loop is formed, and current is supplied to the telephone.
KX-TEA308CE 11.5. POWER FAILURE THROUGH CALL SWITCHING CIRCUIT 11.5.1. Circuit operation If an AC power failure lasts longer than one second (momentary power failure), the COL is directly connected to the extension. The COL1 will be connected with EXT101. 11.6. DATA COMMUNICATION CIRCUIT 11.6.1.
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KX-TEA308CE 2) Data Communication of ASIC and PITS When APT I/F Module in CPU send the request signal to the proprietary telephone and after receiving the key input information (19 pulses) from the proprietary telephone and sending data (47 pulses) for LED control. APT I/F Module will receive acknowledge signal from the proprietary telephone.
KX-TEA308CE 11.7. CONTROL CIRCUIT 11.7.1. Composition The control block is composed of the 16bit CPU(IC700: operating on 23.966MHz system clock from the 47.936MHz external crystal oscillator), the 8Mbit Flash ROM, the 4Mbit SRAM, and the discrete logic IC (IC7, IC8) for the I/O Port to control the extension.
KX-TEA308CE 11.9. DTMF GENERATOR CIRCUIT 11.9.1. Composition A DTMF tone is generated by the DSP in the CPU and sent to an CO line. 11.10. DTMF RECEIVER CIRCUIT 11.10.1. Composition The DTMF receiver circuit is composes of four DTMF receivers.
KX-TEA308CE 11.11. INT CALLID INTERFACE CIRCUIT By using the DSP built into the ASIC, it is possible to produce CALLID signal and send it through the cross point to each extension. The CALLID signal can be switched between FSK and DTMF. There are two sources of the extension CALL ID in the system.
KX-TEA308CE 11.13. USB INTERFACE CIRCUIT This unit have one USB port for using PC programming. ASIC have USB 1.1 controller inside, so this unit make up USB interface only ASIC and USB connector. 11.14. OGM INTERFACE CIRCUIT The TEA308 model incorporates the functions of OGM, CNG and DTMF detection. At the OGM recording, it changes the analog sound in the DSP of the ASIC into a digital signal of 16bits by A/D conversion.
KX-TEA308CE 11.15. RINGING SIGNAL GENERATOR CIRCUIT This section generates the ring signal for the single line telephone. A 20/25Hz square wave is generated by the CPU timer and sent to low pass filter and the Ring signal is amplified by BELL amplifier circuit, and then passed it through the ringing signal switching relay to the single line telephone.
KX-TEA308CE 11.17. DOORPHONE CARD INTERFACE (KX-TE82460X) This mounts a connector to connect the door phone card. Power at +15V, 3.3V and VAG are supplied to the door phone. Also, two busses are supplied from the cross point to the door phone card.
KX-TEA308CE 11.19. CALL ID CARD INTERFACE (KX-TE82493X) The CALLID interface for external line is composed of the interface which receives the CALLID signal from a station and main board controller. The CALLID signal from the external line is transmitted to the CALLID connector via a capacitor in the external circuit. As the control...
KX-TEA308CE 13 IC DATA 13.1. IC700 PIN No Pin Name Function DTMF Rx Data[0] DTMF Rx Data[1] DTMF Rx Data[2] DTMF Rx Data[3] STD1 DTMF-R1 Status STD2 DTMF-R2 Status TOE1 DTMF-R1 Data output Enable TOE2 DTMF-R2 Data output Enable SYSCLR...
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KX-TEA308CE PIN No Pin Name Function Dial Shunt SHUNT3 Receive Mute PAD3 3dB PAD BELLA3 Bell Detect A BELLB3 Bell Detect B LED_SW LED ON PAG_SW External Paging Output MOH_SW External BGM Input BREAK Extension 15V Cutting PDRLY SW Relay for Power Down...
KX-TEA308CE 15 HOW TO REPLACE A FLAT PACKAGE IC Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
KX-TEA308CE 19 REPLACEMENT PARTS Ref. Part No. Part Name & Description Remarks LIST (KX-TEA308CE) PSGP1099X PANEL, LED LENS PMMA HB PSHE1051Z SPACER PSHE1068Z Note: PSHE1180Z TAPE, LED PSHR1336Z SPACER, PCB HOLDER 1. RTL (Retention Time Limited) PSHR1339Z SPACER, LED AS(SAN)
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks IC706 C3FBKC000152 Q703 PQVTDTC144E TRANSISTOR(SI) IC707 C1CB00001825 Q704 2SC2412K TRANSISTOR(SI) IC708 C0JBAZ002268 Q705 PQVTDTC143E TRANSISTOR(SI) IC710 C0JBAB000407 Q903 2SD1819A TRANSISTOR(SI) IC711 C0JBAB000407 Q904...
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D703 MA728 DIODE(SI) L205F G0B150G00002 COIL D704 MA111 DIODE(SI) L205G G0B150G00002 COIL D705 MA728 DIODE(SI) L205H G0B150G00002 COIL D902 MA8150 DIODE(SI) L703 G1C1R0ZA0021...
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks CN200G K2LB104B0055 JACK C204A F2G1H2R20005 CN200H K2LB104B0055 JACK C204B F2G1H2R20005 (TRANSFORMERS) C204C F2G1H2R20005 T200A ETA14Y85AY TRANSFORMER C204D F2G1H2R20005 T200B ETA14Y85AY TRANSFORMER C204E F2G1H2R20005...
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C616 ECUV1H102KBV 0.001 C733 ECJ1VB1H221K 220P C617 ECUV1H102KBV 0.001 C734 ECUV1C104ZFV C618 ECUV1C563KBV 0.056 C735 ECUV1C104ZFV C619 ECUV1C563KBV 0.056 C736 ECUV1C104ZFV C620 ECUV1H471JCV...
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C828 ECUV1H103KBV 0.01 R203B ERJ14YJ220 C829 ECUV1H103KBV 0.01 R203C ERJ14YJ220 C830 ECUV1H103KBV 0.01 R203D ERJ14YJ220 C831 ECUV1H103KBV 0.01 R203E ERJ14YJ220 C832 ECUV1H103KBV 0.01...
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R215C ERJ3GEYJ473 R614 ERJ3GEYJ102 R215D ERJ3GEYJ473 R615 ERJ3GEY0R00 R215E ERJ3GEYJ473 R616 ERJ3GEY0R00 R215F ERJ3GEYJ473 R620 ERJ3GEYJ224 220K R215G ERJ3GEYJ473 R621 ERJ3GEYJ124 120K R215H...
KX-TEA308CE 20 FOR THE SCHEMATIC DIAGRAM Note: 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
KX-TEA308CE 23.1. HOW TO RECOGNIZE THAT Pb FREE SOLDER IS USED...
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KX-TEA308CE 23.2. LOCATION OF OPTIONAL CARDS 23.2.1. 2-Port Doorphone Card (KX-TE82460X) Function Supports the connection of 2 doorphones and 2 door openers. 1. Loosen the screws and open the cable and front covers. 2. Before installing the optional service card, cut and remove the dummy cover from the main unit.
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KX-TEA308CE 23.3. DOORPHONE/DOOROPENER CARD BLOCK DIAGRAM +15V DOOR1 DOOR2 Power TONE Serge D[7:0] DOOR_SW1 TONE_SW1 A[2:1] BUSY1 Door Detect DCN1 nCS,nRD,nWR Hook Detect DHK1 nRESET IC11 +15V +3.3V DOPN1 Door Opene VAG (6V) Relay #A DOPN2 Door Opene Relay #B KX-TE82460X BLOCK DIAGRAM 23.4.
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KX-TEA308CE 23.5. TROUBLESHOOTING GUIDE 23.5.1. Can Not Call From Doorphone 23.5.2. Can Not Talk 23.5.3. Can Not Use Dooropener...
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KX-TEA308CE 23.6. IC DATA 23.6.1. IC6 Pin No. Pin Name Description DHK1 DOOR Hook detection DHK2 Reserve DHK3 DOOR Hook detection DHK4 Reserve DCN1 DOOR Phone Connection Detection DCN2 Reserve DCN3 DOOR Phone Connection Detection DCN4 Reserve DOOR_SW1 Connect DOOR 1 to Port 1 23.6.2.
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KX-TEA308CE Pin No. Pin Name Description BUSY4 Reserve DOPN1 Door Opener Control DOPN2 Reserve DOPN3 Door Opener Control DOPN4 Reserve...
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KX-TEA308CE 23.7. TERMINAL GUIDE OF ICS, TRANSISTORS AND DIODES 23.8. ACCESSORIES AND PACKING MATERIALS...
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KX-TEA308CE 23.9. REPLACEMENT PARTS LIST 23.9.2. MAIN BOARD PARTS (KX-TE82460X) Ref. Part No. Part Name & Description Remarks Note: (ICS) 1. RTL (Retention Time Limited) IC1A C0ABBB000179 IC1C C0ABBB000179 The marking (RTL) indicates that the Retention Time is IC2A C0ABBB000179 limited for this item.
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks F2G1C4R70002 R24C ERJ3GEYJ103 ECUV1C104ZFV R25A ERJ3GEYJ103 ECUV1H223KBV 0.022 R25C ERJ3GEYJ103 ECUV1C104ZFV F2G1C1000015 ECUV1H104ZFV F2G1E1010011 ECUV1H104ZFV C10A ECUV1H152KBV 0.0015 C10C ECUV1H152KBV 0.0015 C11A ECUV1H104ZFV...
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KX-TEA308CE 23.10. FOR THE SCHEMATIC DIAGRAM Note: 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
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KX-TEA308CE 24.1. HOW TO RECOGNIZE THAT Pb FREE SOLDER IS USED...
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KX-TEA308CE 24.2. LOCATION OF OPTIONAL CARDS 24.2.1. 2-Channel Voice Message Card (KX-TE82492X) Function Provides 60 minutes of recording time (2 channels) for messages using the Built-in Voice Message Feature. 1. Loosen the screws and open the cable and front covers.
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KX-TEA308CE 24.4. CIRCUIT OPERATIONS 24.4.1. Option Card (KX-TE82492X) 24.4.1.1. Voice Record/Play Circuit Circuit Operation This card has two BV record and play circuits. DSP IC is controlled by Main Cpu. In case of recording, the voice (from CO/EXT) is through the crosspoint SW and DSP, and recorded to Memory IC.
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KX-TEA308CE 24.6. IC DATA 24.6.1. IC7, IC8 IC No. Pin No. Pin Name Description RSTN DSP Reset Reserve DSP Power Down Reserve Reserve Reserve Reserve Reserve LD[0] LD[1] Write data LD[2] Write data LD[3] Write data LD[4] LD[5] LD[6] LD[7]...
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KX-TEA308CE 24.7. TERMINAL GUIDE OF ICS, TRANSISTORS AND DIODES 24.8. ACCESSORIES AND PACKING MATERIALS...
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KX-TEA308CE 24.9. REPLACEMENT PARTS LIST Ref. Part No. Part Name & Description Remarks (KX-TE82492X) C3FBMZ000002 C3FBMZ000002 Note: C2HBBK000018 C2HBBK000018 1. RTL (Retention Time Limited) C0JBAZ001852 The marking (RTL) indicates that the Retention Time is PSVISNLV273A limited for this item. PSVITCVT138T...
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks ECUV1C104KBV ERJ3GEY0R00 ECUV1C104KBV ERJ3GEY0R00 ECUV1C104KBV ERJ3GEY0R00 ECUV1C104KBV ERJ3GEY0R00 ECUV1C104KBV ERJ3GEY0R00 ECUV1C104KBV ERJ3GEYJ222 2.2K ECUV1C104KBV ERJ3GEYJ222 2.2K ECUV1C104KBV ERJ3GEYJ102 ECUV1C104KBV ERJ3GEYJ102 ECUV1C104KBV ERJ3GEYJ103 ECUV1C104KBV...
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KX-TEA308CE 25 KX-TE82493X (3-PORT CALLER ID CARD)
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KX-TEA308CE 25.1. HOW TO RECOGNIZE THAT Pb FREE SOLDER IS USED...
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KX-TEA308CE 25.2. LOCATION OF OPTIONAL CARDS 25.2.1. 3-Port Caller ID Card (KX-TE82493X) Function Adds Caller ID support for 3 outside (CO) lines. 1 card can be installed for outside (CO) lines 1-3. A second card can be installed for outside (CO) lines 4-6, and a third card can be installed for outside (CO) lines 7 and 8.
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KX-TEA308CE 25.5. TROUBLESHOOTING GUIDE 25.5.1. Cannot Receive CALL ID Data (FSK) 25.5.2. Cannot Receive CALL ID Data (DTMF)
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KX-TEA308CE 25.6. IC DATA 25.6.1. IC8 Pin No. Pin Name Description NCD[0] ESK Carrier Detection Flag NCD[1] ESK Carrier Detection Flag NCD[2] ESK Carrier Detection Flag Reserve NSTD[0] Alert Signal of CID Device NSTD[1] Alert Signal of CID Device NSTD[2]...
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KX-TEA308CE 25.7. TERMINAL GUIDE OF ICS, TRANSISTORS AND DIODES 25.8. ACCESSORIES AND PACKING MATERIALS...
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KX-TEA308CE 25.9. REPLACEMENT PARTS LIST Ref. Part No. Part Name & Description Remarks (KX-TE82493X) IC1A C1CB00001176 IC1B C1CB00001176 Note: IC1C C1CB00001176 IC2A PQVINJM2904V 1. RTL (Retention Time Limited) IC2B PQVINJM2904V The marking (RTL) indicates that the Retention Time is IC2C PQVINJM2904V limited for this item.
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KX-TEA308CE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C16C ECUV1H223KBV 0.022 ERJ3GEYJ221 C17A ECUV1H332KBV 0.0033 ERJ3GEYJ221 C17B ECUV1H332KBV 0.0033 R14A ERJ3GEYJ104 100K C17C ECUV1H332KBV 0.0033 R14B ERJ3GEYJ104 100K C18A ECUV1C224KBV 0.22...
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KX-TEA308CE 25.10. FOR THE SCHEMATIC DIAGRAM Note: 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
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KX-TEA308CE 26.1. ACCESSORIES AND PACKING MATERIALS...
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KX-TEA308CE 26.2. REPLACEMENT PARTS LIST (KX-A227X) Note: 1. RTL (Retention Time Limited) The marking (RTL) indicates that the Retention Time is limited for this item. After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time.