Table of Contents
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KX-T2378JXW
CONTENTS
9 CIRCUIT OPERATION
9.1. Reset Circuit
9.2. Telephone Line Interface
Page
4
9.3. Ringer Circuit
5
9.4. Tone Detect
6
9.5. In Use Detector Circuit
6
9.6. Hold Circuit
6
9.7. Speakerphone Circuit
7
10 HOW TO SET THE FLASH TIME AND REDIAL TIME
8
10.1. Flash Time
8
10.2. Redial Time
9
11 IC BLOCK DIAGRAM
10
11.1. IC801
10
11.2. Speakerphone IC Data (IC601)
11
11.3. Ringer IC Data (IC1, IC22)
11
12 MODULE BLOCK DIAGRAM
11
12.1. LCD MODULE BLOCK
12
12.2. CONNECTOR PIN ASSIGNMENT
13
13 HOW TO REPLACE FLAT PACKAGE IC
14
13.1. Preparation
15
13.2. Procedure
16
13.3. Modification Procedure of Bridge
17
14 CABINET AND ELECTRICAL PARTS LOCATION
17
15 ACCESSORIES AND PACKING MATERIALS
17
16 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES
18
18
17 REPLACEMENT PARTS LIST
19
17.1. Base Unit
17.2. ACCESSORIES AND PACKING MATERIALS
18 FOR SCHEMATIC DIAGRAM (SCHEMATIC DIAGRAM (BASE
19
20
UNIT))
21
19 SCHEMATIC DIAGRAM (BASE UNIT)
22
19.1. Main (Suffix A)
22
19.2. Main (Suffix B)
23
19.3. Operation
2
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