Read Panasonic KX-TCD225UA / KX-TCA122UA / KX-TCA121UA Service Manual online
15.4. Adjustment Standard (Handset)
62
16 THINGS TO DO AFTER REPLACING IC
63
16.1. Base Unit
63
16.2. Handset
63
17 RF SPECIFICATION
64
17.1. Base Unit
64
17.2. Handset
64
18 HOW TO CHECK THE HANDSET SPEAKER OR RECEIVER 65
19 FREQUENCY TABLE (MHz)
65
20 BLOCK DIAGRAM (BASE UNIT)
66
21 CIRCUIT OPERATION (BASE UNIT)
67
21.1. Outline
67
21.2. Power Supply Circuit
68
21.3. Telephone Line Interface
69
21.4. Transmitter/Receiver
69
21.5. Pulse Dialling
69
22 BLOCK DIAGRAM (HANDSET)
70
23 CIRCUIT OPERATION (HANDSET)
71
23.1. Outline
71
23.2. Power Supply Circuit/Reset Circuit
71
23.3. Charge Circuit
71
23.4. Battery Low/Power Down Detector
71
23.5. Speakerphone
71
24 CIRCUIT OPERATION (CHARGER UNIT)
72
24.1. Power Supply Circuit
72
25 SIGNAL ROUTE
73
26 CPU DATA (BASE UNIT)
75
26.1. IC8 (BBIC)
75
27 CPU DATA (HANDSET)
77
27.1. IC1 (BBIC)
77
28 ENGINEERING MODE
79
28.1. Base Unit
79
28.2. Handset
82
29 EEPROM LAYOUT (BASE UNIT)
84
29.1. Scope
84
29.2. Introduction
84
29.3. EEPROM Layout
84
30 EEPROM LAYOUT (HANDSET)
89
30.1. Scope
89
30.2. Introduction
89
30.3. EEPROM contents
89
31 HOW TO REPLACE THE FLAT PACKAGE IC
92
31.1. PREPARATION
92
31.2. FLAT PACKAGE IC REMOVAL PROCEDURE
92
31.3. FLAT PACKAGE IC INSTALLATION PROCEDURE
93
31.4. BRIDGE MODIFICATION PROCEDURE
93
32 CABINET AND ELECTRICAL PARTS (BASE UNIT)
94
33 CABINET AND ELECTRICAL PARTS (HANDSET)
95
34 CABINET AND ELECTRICAL PARTS (CHARGER UNIT)
96
35 ACCESSORIES AND PACKING MATERIALS
97
35.1. KX-TCD225UAF/UAS/UAT
97
35.2. KX-TCA121UAF/UAS/UAT
98
36 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
99
36.1. Base Unit
99
36.2. Handset
99
36.3. Charger Unit
99
37 REPLACEMENT PARTS LIST
100
37.1. Base Unit
100
37.2. Handset
102
37.3. Charger Unit
104
37.4. Accessories and Packing Materials
104
37.5. Fixtures and Tools
104
38 FOR SCHEMATIC DIAGRAM
105
38.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT))
105
38.2. Handset (SCHEMATIC DIAGRAM (HANDSET))
105
38.3. Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))
105
39 SCHEMATIC DIAGRAM (BASE UNIT)
106
40 SCHEMATIC DIAGRAM (HANDSET)
108
41 SCHEMATIC DIAGRAM (CHARGER UNIT)
110
42 CIRCUIT BOARD (BASE UNIT)
111
42.1. Component View
111
42.2. Flow Solder Side View
112
43 CIRCUIT BOARD (HANDSET)
113
43.1. Component View
113
43.2. Flow Solder Side View
114
44 CIRCUIT BOARD (CHARGER UNIT)
115
44.1. Component View
115
44.2. Flow Solder Side View
115
3
KX-TCD225UA / KX-TCA122UA / KX-TCA121UA
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