CHAPTER 5 NDA-24300
Page 378
Issue 1
FAULT REPAIR PROCEDURES
Figure 5-21 External Hold Tone Supply Block Diagram
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.
PLO 1
External
Tone
Source
(Option)
To Music
Connector
for EMA
Card (IMG0)
MDF
TSWM
PIM 0
PIM 2
PIM 3
IMG1
PIM 1
Symbols
: Circuit Card
: Connector
Note
TSW 10
TSW 00
TSW 11
TSW 01
TSW 12
TSW 02
TSW 13
TSW 03
Melody
IC
PLO 0
EMAFH
EMA : PH-PC40
PLO : PH-CK16/17/16-A/17-A TSW : PH-SW12: External Cable