Panasonic KX-T7565AL, Service Manual

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1 CAUTION 2
2 FOR SERVICE TECHNICIANS 2
3 LOCATION OF CONTROLS 3
4 DISASSEMBLY INSTRUCTION 4
4.1. HOW TO REMOVE THE LOWER CABINET(Procedure 1)
4
4.2. HOW TO REMOVE THE HOOK BUTTON(Procedure 1 ｮ 2)
4
4.3. HOW TO REMOVE THE MAIN BOARDS(Procedure 1 ｮ 2 ｮ
3) 5
4.4. HOW TO REMOVE THE LCD BLOCK(Procedure 1 ｮ 2 ｮ 3 ｮ
4) 5
5 IC DATA 6
5.1. IC1 6
5.2. IC2 8
6 HOW TO REPLACE THE FLAT PACKAGE IC 10
6.1. PREPARATION 10
6.2. FLAT PACKAGE IC REMOVE PROCEDURE 10
6.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 11
6.4. BRIDGE MODIFICATION PROCEDURE 11
7 BLOCK DIAGRAM 12
8 CIRCUIT OPERATIONS 13
8.1. KEY INPUT CONTROL CIRCUIT 13
8.2. LCD CONTROL CIRCUIT 14
8.3. LED CIRCUIT 15
8.4. DATA COMMUNICATION CIRCUIT 16
8.5. RESET CIRCUIT 17
8.6. TONE GENERATION CIRCUIT 18
8.7. HANDSET CIRCUIT 20
8.8. SPEAKER-PHONE CIRCUIT 20
9 TROUBLE SHOOTING GUIDE 22
9.1. NO OPERATION 22
9.2. THE ELECTRONIC VOLUME OF THE SPEAKER-PHONE
DOES NOT WORK 23
9.3. THE ELECTRONIC VOLUME OF THE HANDSET DOES
NOT WORK 23
9.4. SPEAKER-PHONE TROUBLE 24
9.5. TONE DIAL TROUBLE 24
9.6. HANDSET TROUBLE 25
10 WAVEFORM 26
11 TERMINAL GUIDE OF IC 担 , TRANSISTORS AND DIODES 28
12 CABINET AND ELECTRICAL PARTS LOCATION 29
13 ACCESSORIES AND PACKING MATERIALS 30
14 REPLACEMENT PARTS LIST 31
14.1. CABINET AND ELECTRICAL PARTS 31
14.2. ACCESSORIES AND PACKING MATERIALS 31
14.3. MAIN BOARD PARTS 31
15 SCHMATIC DIAGRAM 35
16 PRINTED CIRCUIT BOARD (MAIN BOARD) 37
16.1. COMPONNENT VIEW 37
16.2. BOTTOM VIEW 38
CONTENTS
Page Page
1 CAUTION
Note:
When you mention the serial number, write down all 11 digits.
The serial number may be found the label affixed to the bottom of the unit.
2 FOR SERVICE TECHNICIANS
1. Note the following items when exchanging the LEDs (Ref. No. D100-107) of Main Board.
1) Do not reuse a LED which is removed from the P.C. Board.
2) Use a soldering iron (less than 15 W) for exchanging LED.
3) Do not heat the LED for more than 2 seconds.
4) Do not move the LED after soldering.
2
KX-T7565AL / KX-T7565AL-B