KX-TC1468LBB CONTENTS Page Page 1 STANDARD BATTERY LIFE 8.1. Test Mode Flow Chart (Base Unit) 1.1. Recharge 8.2. Adjustment 1.2. Battery Information 8.3. Adjustment Standard (Base Unit) 2 LOCATION OF CONTROLS 9 ADJUSTMENTS (HANDSET) 2.1. Base unit 9.1. Test Mode Flow Chart (Handset) 2.2.
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KX-TC1468LBB 15 HOW TO REPLACE FLAT PACKAGE IC 23.2. Handset 15.1. Preparation 23.3. Accessories and Packing Materials 15.2. Procedure 24 FOR SCHEMATIC DIAGRAM 15.3. Modification Procedure of Bridge 24.1. Base Unit 16 CPU DATA (Base Unit) 24.2. Handset 16.1. IC3 25 SCHEMATIC DIAGRAM (Base Unit) 16.2.
KX-TC1468LBB 1 STANDARD BATTERY LIFE 1.1. Recharge 1.2. Battery Information After your Panasonic battery is fully charged: Operation Operating time While in use (TALK) Up to about 5 hours While not in use (Standby) Up to about 5 days · The battery operating time may vary depending on usage conditions and ambient temperature.
KX-TC1468LBB 3 CONNECTIONS · USE ONLY WITH Panasonic AC ADAPTOR PQWATC1468LB. · The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.)
KX-TC1468LBB 3.1. Adding Another Phone This unit will not function during a power failure. To connect a standard telephone on the same line, use a T-adaptor.
KX-TC1468LBB 6 HOW TO REMOVE TEL JACK 1. Keep 2 hooks for TEL JACK fixing open in the direction of arrow 1, then pull the top of TEL JACK forward as shown arrow 2 until the hooks click. (Refer to Fig. 1.)
KX-TC1468LBB 7.2. Bell Reception Cross Reference: Note: Telephone Line Interface (P.34) CPU : IC3 * : Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.58) or CIRCUIT BOARD (Handset) (P.62)
KX-TC1468LBB 8 ADJUSTMENTS (BASE UNIT) If your unit have below symptoms, adjust or confirm each item using remedy column from the table. Symptom Remedy* The base unit dose not respond to a call from handset. Make adjustments in item (A) The base unit dose not transmit or the transmit frequency is off.
KX-TC1468LBB 8.2. Adjustment Adjustment Items Test Mode Adjustment *Procedure Check or Point Replace Parts (A) RX VCO CH1 Talk L502 · Adjust L502 so that the reading of the Digital Voltmeter is 1.75V ± 0.2V. IC1, L502, (at TP808) VD501...
KX-TC1468LBB 9 ADJUSTMENTS (HANDSET) If your unit have below symptoms, adjust or confirm each item using remedy column from the table. Symptom Remedy* The movement of Battery Low Indicator is wrong. Make confirmation in item (A) The base unit does not respond to a call from the handset.
KX-TC1468LBB 9.2. Adjustment Adjustment Items Test Mode Adjustment Procedure Check or Point Replace Parts (A) TX VCO Stand-by L503 1. Adjust L503 so that the reading of the Digital Voltmeter is 1.80V ± 0.15V. IC1, L503, (at TP809) VD502 (B) RX VCO...
KX-TC1468LBB 12.5. Telephone Line Interface Function: · · · Bell signal detection and OFF HOOK circuit: → → → → → BELL → → → → → → → OFF HOOK ON HOOK Circuit: Pulse Dial Circuit: Side Tone Circuit: 12.6.
KX-TC1468LBB 14 CIRCUIT OPERATION (HANDSET) 14.1. Outline Handset consist of the following ICs as shown in BLOCK DIAGRAM. · CPU: U1 − − All data signals (forming/analyzing ACK or CMD signal*) − − All interfaces (ex; LED, Key, Buzzer, Detector Circuit, Charge, Battery Low) −...
KX-TC1468LBB 14.3. Battery Low / Power Down Detector Circuit Operation: Battery Low and Power Down are detected by RF IC which check the voltage from battery. Shortly, every detected blocks are inseide of RF IC. The detected voltage is as follows;...
KX-TC1468LBB 15 HOW TO REPLACE FLAT PACKAGE IC 15.1. Preparation · SOLDER Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19, KR-19RMA · Soldering iron Recommended power consumption will be between 30 W to 40 W. Temperature of Copper Rod 662 ± 50°F (350 ± 10°C) (An expert may handle between 60 W to 80 W iron, but beginner might damage foil by overheating.)
KX-TC1468LBB 16 CPU DATA (Base Unit) 16.1. IC3 Port Name Label Init. Description Remark XOUT TEST RSSIN PAGE DTMF5 DTMF4 DTMF3 DTMF2 DTMF1 DTMF0 LEDP1 LEDP2 TXDATA TXRFPWR TXPWR RESERVED FLASHOPT COMCLK COMDATA COMSTB RXDATA LSEIZE CHGDET RINGDET RESET 16.2. Digital Security Coding System Every time the handset is put on the charging cradle of base unit, a 16-bit digital security code is generated and exchanged between base and handset.
KX-TC1468LBB 23 REPLACEMENT PARTS 23.1.2. Main P.C.Board Parts LIST Ref. Part No. Part Name & Description Remarks PCB1 PQWP11468LBH MAIN P.C.BOARD ASS´Y (RTL) 1. RTL (Retention Time Limited) (ICS) 271002401005 IC Note: 273024114012 IC The marking (RTL) indicates that the Retention Time is (TRANSISTORS) limited for this item.
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KX-TC1468LBB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks ERJ3GEYJ363 ECUV1C224ZFV 0.22 ERJ3GEYJ392 3.9k ECUV1H103KBV 0.01 ERJ3GEYJ104 100k 220101681300 0.1 ERJ3GEYJ103 220101681309 0.01 ERJ3GEYJ274 270k 220101681309 0.01 ERJ3GEYJ104 100k ECUV1C104ZFV 0.1 ERJ3GEYJ684 680k ECUV1C104ZFV 0.1...
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KX-TC1468LBB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks 264100051001 CERAMIC FILTER ECUV1H680JCV 68P (COILS) ECUV1C104ZFV 0.1 L502 253200830200 COIL ECUV1H102KBV 0.001 L503 253250830200 COIL ECUV1H473MD 0.047 L504 252330201801 COIL PQCUV1E104MD 0.1 (RESISOTRS) ECUV1C104ZFV 0.1...
KX-TC1468LBB 24 FOR SCHEMATIC DIAGRAM 24.1. Base Unit 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-TC1468LBB 27.2. Main (Flow Solder Side View) LED P1 (IC3-12) CHG_DET (IC3-25) Ring_DET (IC3-26) KX-TC1468LBB: BASE UNIT Main (Flow Solder Side View)
KX-TC1468LBB 27.3. Locator (Component View) KX-TC1468LBB: BASE UNIT Locator (Component View) 27.4. Locator (Flow Solder Side View) KX-TC1468LBB: BASE UNIT Locator (Flow Solder Side View)