NEC NDA-24300 manual External Hold Tone Supply Block Diagram

Models: NDA-24300

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FAULT REPAIR PROCEDURES

 

 

 

IMG1

 

 

PIM 3

 

 

 

 

 

PIM 2

 

 

 

 

 

PIM 1

 

 

 

 

 

PIM 0

 

 

 

 

 

TSWM

 

 

 

 

 

TSW 10

TSW 11

TSW 12

TSW 13

PLO 1

 

 

 

TSW 00

TSW 01

TSW 02

TSW 03

PLO 0

 

Melody

 

 

 

 

 

EMAFH

 

 

 

 

IC

 

 

 

 

 

External

Tone

Source (Option)

To Music

Connector for EMA Card (IMG0)

MDF

Note

Symbols

: Circuit Card

: Connector

: External Cable

PLO : PH-CK16/17/16-A/17-A

TSW : PH-SW12

 

EMA : PH-PC40

 

Note: If PH-CK16-A/PH-CK17-A is used, multiple connections are made between PLO#0 and PLO#1. Refer to the description of PH-CK16-A or PH-CK17-A in the Circuit Card Manual.

Figure 5-21 External Hold Tone Supply Block Diagram

CHAPTER 5

NDA-24300

Page 378

Issue 1

Page 405
Image 405
NEC NDA-24300 manual External Hold Tone Supply Block Diagram