Read Panasonic KX-TCD420RUM / KX-TCD420RUS / KX-A142RUM / KX-A142RUS Service Manual online
21 BLOCK DIAGRAM (HANDSET)
59
22 CIRCUIT OPERATION (HANDSET)
60
22.1. Outline
60
22.2. Power Supply Circuit/Reset Circuit
60
22.3. Charge Circuit
60
22.4. Battery Low/Power Down Detector
60
23 CIRCUIT OPERATION (CHARGER UNIT)
61
23.1. Power Supply Circuit
61
24 SIGNAL ROUTE
61
25 CPU DATA (BASE UNIT)
62
25.1. IC8 (BBIC)
62
26 CPU DATA (HANDSET)
65
26.1. IC1 (BBIC)
65
27 EEPROM LAYOUT (BASE UNIT)
67
27.1. Scope
67
27.2. Introduction
67
27.3. EEPROM Layout
67
28 EEPROM LAYOUT (HANDSET)
71
28.1. Scope
71
28.2. Introduction
71
28.3. EEPROM contents
71
29 HOW TO REPLACE FLAT PACKAGE IC
74
29.1. Preparation
74
29.2. Procedure
74
29.3. Modification Procedure of Bridge
74
30 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
75
31 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET) 76
32 CABINET AND ELECTRICAL PARTS LOCATION (CHARGER
UNIT)
77
33 ACCESSORIES AND PACKING MATERIALS
78
33.1. KX-TCD420RUM/RUS
78
33.2. KX-A142RUM/RUS
79
34 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES
80
34.1. Base Unit
80
34.2. Handset
80
34.3. Charger Unit
80
35 REPLACEMENT PARTS LIST
81
35.1. Base Unit
81
35.2. Handset
83
35.3. Charger Unit
83
35.4. Accessories and Packing Materials
84
35.5. Fixtures and Tools
84
35.6. Memo
85
36 SCHEMATIC DIAGRAM (BASE UNIT)
86
37 SCHEMATIC DIAGRAM (HANDSET)
88
38 SCHEMATIC DIAGRAM (CHARGER UNIT)
90
39 CIRCUIT BOARD (BASE UNIT)
91
39.1. Component View
91
39.2. FlowSolder Side View
92
40 CIRCUIT BOARD (HANDSET)
93
40.1. Component View
93
40.2. FlowSolder Side View
94
41 CIRCUIT BOARD (CHARGER UNIT)
95
41.1. Component View
95
41.2. FlowSolder Side View
95
3
KX-TCD420RUM / KX-TCD420RUS / KX-A142RUM / KX-A142RUS
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