Read Panasonic KX-T7633RU Service Manual online
1 ABOUT LEAD FREE SOLDER (PbF: Pb free)
3
1.1.
SUGGESTED PbF SOLDER
3
1.2.
HOW TO RECOGNIZE THAT Pb FREE SOLDER IS
USED
4
2 FOR SERVICE TECHNICIANS
5
3 SPECIFICATIONS
5
4 LOCATION OF CONTROLS
5
5 CONNECTION
6
6 DISASSEMBLY INSTRUCTIONS
7
7 HOW TO REPLACE A FLAT PACKAGE IC
8
7.1.
PREPARATION
8
7.2.
REMOVAL PROCEDURE
8
7.3.
PROCEDURE
8
7.4.
REMOVING SOLDER FROM BETWEEN PINS
8
8 TROUBLESHOOTING GUIDE
9
8.1.
NO OPERATION
9
8.2.
LCD DOES NOT OPERATE
10
8.3.
HANDSET DOES NOT WORK
11
8.4.
HEADSET DOES NOT WORK
12
8.5.
SPEAKER-PHONE TROUBLE
13
8.6.
DXDP-DPT DOES NOT WORK
14
8.7.
OPTION DOES NOT WORK
14
9 BLOCK DIAGRAM
15
10 CIRCUIT OPERATIONS
16
10.1. KEY INPUT CONTROL CIRCUIT
16
10.2. LCD CIRCUIT
17
10.3. LED CIRCUIT
18
10.4. RESET CIRCUIT
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10.5. POWER SUPPLY CIRCUIT
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10.6. DATA COMMUNICATION
20
10.7. DXDP COMMUNICATION
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10.8. OPTION DETECTION
22
10.9. ANALOG CIRCUIT
22
11 IC DATA
24
11.1. IC5 (ASIC)
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11.2. IC3 (CPU)
26
12 TERMINAL GUIDE OF ICs, TRANSISTORS AND DIODES
27
13 CABINET AND ELECTRICAL PARTS LOCATION
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14 ACCESSORIES AND PACKING MATERIALS
29
15 REPLACEMENT PARTS LIST
30
15.1. CABINET AND ELECTRICAL PARTS
30
15.2. ACCESSORIES AND PACKING MATERIALS
30
15.3. MAIN AND SUB BOARDS PARTS
30
16 FOR THE SCHEMATIC DIAGRAM
33
17 SCHEMATIC DIAGRAM
34
18 WAVEFORM
38
18.1. MEMO
41
19 PRINTED CIRCUIT BOARD (MAIN / SUB BOARDS)
42
19.1. COMPONENT VIEW
42
19.2. BOTTOM VIEW
43
CONTENTS
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KX-T7633RU-B
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