Read Panasonic KX-TCD246UAS / KX-TCD246UAT / KX-TCA122UAS / KX-TCA122UAT / KX-TCA121UAS / KX-TCA121UAT Service Manual online
1 ABOUT LEAD FREE SOLDER (PbF: Pb free)
4
1.1. Suggested PbF Solder
4
1.2. How to recognize that Pb Free solder is used
5
2 FOR SERVICE TECHNICIANS
6
3 CAUTION
6
4 OPERATING INSTRUCTIONS
7
4.1. Battery
7
4.2. Location ofControls
9
4.3. Connections
10
4.4. Guide to Settings
11
4.5. For Service Hint
12
5 DISASSEMBLY INSTRUCTIONS
13
5.1. Base Unit
13
5.2. Handset
14
5.3. Charger Unit
15
6 HOW TO REPLACE THE HANDSET LCD
16
7 TROUBLESHOOTING FLOWCHART
17
7.1. Check Power
18
7.2. Check Battery Charge
19
7.3. Check Link
20
7.4. Check Handset Transmission
24
7.5. Check Handset Reception
24
7.6. Check Caller ID
24
7.7. Check Base Speakerphone Transmission
24
7.8. Check Base Speakerphone Reception
24
7.9. Bell Reception
25
7.10. Check TAM Operation
25
8 TROUBLESHOOTING BY SYMPTOM (BASE UNIT AND
CHARGER UNIT)
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8.1. Check Point (Base Unit)
26
8.2. The Setting Method ofJIG (Base Unit)
31
8.3. Adjustment Standard (Base Unit)
32
8.4. Check Point (Charger Unit)
33
8.5. Adjustment Standard (Charger Unit)
33
9 TROUBLESHOOTING BY SYMPTOM (HANDSET)
34
9.1. Check Point (Handset)
34
9.2. Troubleshooting for Speakerphone (Handset)
37
9.3. The Setting Method ofJIG (Handset)
38
9.4. Adjustment Standard (Handset)
39
10 THINGS TO DO AFTER REPLACING IC
40
10.1. Base Unit
40
10.2. Handset
40
11 RF SPECIFICATION
41
11.1. Base Unit
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11.2. Handset
41
12 HOW TO CHECK THE SPEAKER OR RECEIVER
42
13 FREQUENCY TABLE (MHz)
42
14 BLOCK DIAGRAM (BASE UNIT)
43
15 CIRCUIT OPERATION (BASE UNIT)
44
15.1. Outline
44
15.2. Power Supply Circuit
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15.3. Telephone Line Interface
46
15.4. Transmitter/Receiver
46
15.5. Pulse Dialling
46
16 BLOCK DIAGRAM (HANDSET)
47
17 CIRCUIT OPERATION (HANDSET)
48
17.1. Outline
48
17.2. Power Supply Circuit/Reset Circuit
48
17.3. Charge Circuit
48
17.4. Battery Low/Power Down Detector
48
17.5. Speakerphone
48
18 CIRCUIT OPERATION (CHARGER UNIT)
49
18.1. Power Supply Circuit
49
19 SIGNAL ROUTE
50
20 CPU DATA (BASE UNIT)
52
20.1. IC4 (BBIC)
52
21 CPU DATA (HANDSET)
55
21.1. IC1 (BBIC)
55
22 ENGINEERING MODE
57
22.1. Base Unit
57
22.2. Handset
60
23 EEPROM LAYOUT (BASE UNIT)
62
23.1. Scope
62
23.2. Introduction
62
Note:
Because CONTENTS 4 is the extract from the Operating Instructions of this model, it is subject to change without notice. You can
download and refer to the original Operating Instructions on TSN Server for further information.
download and refer to the original Operating Instructions on TSN Server for further information.
CONTENTS
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Page
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KX-TCD246UAS / KX-TCD246U AT / KX-TCA122UAS / KX-TCA122UAT / KX-TCA121UAS / KX-TCA121UAT
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