Read Panasonic KX-NT136RU 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
6
4 LOCATION OF CONTROLS
7
5 CONNECTION
8
5.1.
OPTIONAL ACCESORY
8
6 DISASSEMBLY INSTRUCTIONS
9
7 BLOCK DIAGRAM
11
8 CIRCUIT OPERATIONS
12
8.1.
MAIN-CPU (IC1)
12
8.2.
LCD CIRCUIT
12
8.3.
RESET CIRCUIT
13
8.4.
Ethernet CIRCUIT
13
8.5.
CODEC(IC7) [ANALOG] CIRCUIT
14
8.6.
SUB-CPU (IC13)
15
8.7.
KEY INPUT CONTROL CIRCUIT
16
8.8.
LED CIRCUIT
17
8.9.
POWER SUPPLY CIRCUIT
18
9 TROUBLESHOOTING GUIDE
19
9.1.
NO OPERATION
19
9.2.
LCD DOES NOT OPERATE
21
9.3.
HANDSET DOES NOT WORK
22
9.4.
HEADSET DOES NOT WORK
23
9.5.
SPEAKER-PHONE DOES NOT WORK
24
9.6.
Ethernet DOES NOT WORK (LAN PORT)
25
9.7.
Ethernet DOES NOT WORK (PC PORT)
26
10 IC DATA
27
10.1. IC1 (MAIN-CPU)
27
10.2. IC7 (CODEC)
32
10.3. IC12
34
10.4. IC13 (SUB-CPU)
37
10.5. IC301 (DC-CON)
39
10.6. IC302 (PoE 802.3af)
40
11 TERMINAL GUIDE OF ICs, TRANSISTORS AND DIODES
41
12 HOW TO REPLACE A FLAT PACKAGE IC
42
12.1. PREPARATION
42
12.2. PROCEDURE
42
12.3. REMOVING SOLDER FROM BETWEEN PINS
42
13 CABINET AND ELECTRICAL PARTS LOCATION
43
14 ACCESSORIES AND PACKING MATERIALS
44
15 REPLACEMENT PARTS LIST
45
15.1. CABINET AND ELECTRICAL PARTS
45
15.2. ACCESSORIES AND PACKING MATERIALS
45
15.3. MAIN BOARD PARTS
45
15.4. SUB BOARD PARTS
49
15.5. POWER BOARD PARTS
49
16 FOR THE SCHEMATIC DIAGRAM
50
17 SCHEMATIC DIAGRAM
51
17.1. SUB (KEY/HEADSET/LED block)
51
17.2. MAIN No1. (MAIN CPU block)
52
17.3. MAIN No2. (CODEC block)
56
17.4. MAIN No3. (XPHY block)
58
17.5. MAIN No4. (SUB CPU block)
60
17.6. POWER SUPPLY
62
17.7. WAVEFORM
63
18 PRINTED CIRCUIT BOARD
66
18.1. MAIN BOARD
66
18.2. SUB BOARD
68
18.3. POWER BOARD
68
CONTENTS
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Page
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KX-NT136RU
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