Read Panasonic KX-TCD460UA / KX-A146UA-1 / KX-A146UA Service Manual online
18 HOW TO CHECK THE HANDSET SPEAKER OR RECEIVER 54
19 FREQUENCY TABLE (MHz)
55
20 BLOCK DIAGRAM (BASE UNIT)
56
21 CIRCUIT OPERATION (BASE UNIT)
57
21.1. Outline
57
21.2. Power Supply Circuit
58
21.3. Telephone Line Interface
59
21.4. Transmitter/Receiver
59
21.5. Pulse Dialing
59
22 BLOCK DIAGRAM (HANDSET)
60
23 CIRCUIT OPERATION (HANDSET)
61
23.1. Outline
61
23.2. Power Supply Circuit/Reset Circuit
61
23.3. Charge Circuit
61
23.4. Battery Low/Power Down Detector
61
23.5. Speakerphone
61
24 CIRCUIT OPERATION (CHARGER UNIT)
62
24.1. Power Supply Circuit
62
25 SIGNAL ROUTE
63
26 CPU DATA (BASE UNIT)
64
26.1. IC2 (BBIC)
64
27 CPU DATA (HANDSET)
66
27.1. IC1 (BBIC)
66
28 EEPROM LAYOUT (BASE UNIT)
68
28.1. Scope
68
28.2. Introduction
68
28.3. EEPROM Layout
68
29 EEPROM LAYOUT (HANDSET)
71
29.1. Scope
71
29.2. Introduction
71
29.3. EEPROM contents
71
30 HOW TO REPLACE FLAT PACKAGE IC
74
30.1. Preparation
74
30.2. Procedure
74
30.3. Modification Procedure of Bridge
74
31 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
75
32 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET) 76
33 CABINET AND ELECTRICAL PARTS LOCATION (CHARGER
UNIT)
77
34 ACCESSORIES AND PACKING MATERIALS
78
34.1. KX-TCD460UAF/UAS/UAT
78
34.2. KX-A146UAF/UAS/UAT
79
35 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
80
35.1. Base Unit
80
35.2. Handset
80
35.3. Charger Unit
80
36 REPLACEMENT PARTS LIST
81
36.1. Base Unit
81
36.2. Handset
82
36.3. Charger Unit
84
36.4. Accessories and Packing Materials
84
36.5. Fixtures and Tools
84
37 FOR SCHEMATIC DIAGRAM
85
37.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT))
85
37.2. Handset (SCHEMATIC DIAGRAM (HANDSET))
85
37.3. Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))
85
38 SCHEMATIC DIAGRAM (BASE UNIT)
86
39 SCHEMATIC DIAGRAM (HANDSET)
88
40 SCHEMATIC DIAGRAM (CHARGER UNIT)
90
41 CIRCUIT BOARD (BASE UNIT)
91
41.1. Component View
91
41.2. Flow Solder Side View
92
42 CIRCUIT BOARD (HANDSET)
93
42.1. Component View
93
42.2. Flow Solder Side View
94
43 CIRCUIT BOARD (CHARGER UNIT)
95
43.1. Component View
95
43.2. Flow Solder Side View
95
3
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
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