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CHAPTER 5 Operation Procedure for System with PIR
1.7 Replacement Procedure of TSW (Time Division Switch) Circuit Card
This section explains the replacement procedure of the TSW circuit card (PH-SW10-A,
etc.). TSW circuit card is to be mounted on PIR0 (Slot 13 and 14) in case of dual con-
figuration. Replacement procedure of TSW circuit card is shown below.
Note: Always handle it with care when key setting of the circuit card is to be changed.
Note: TSW card to be replaced must be in STBY mode when the system has speech path in dual configuration.
Use CMOD command to change over the ACT/STBY of the speech path.
1.7.1 TSW Replacement: 1-IMG
[Start]
Note: When the system is in single configuration, stop the system first.
STEP 1 Is the TSW card to be replaced in STBY mode?
Check the TSW ACT lamp on the TSW card. When the lamp is off, the card is in STBY mode.
YES: Proceed to STEP 3.
NO: Changeover the TSW by using CMOD, from ACT to STBY mode, then proceed to STEP 2.
STEP 2 Confirm the TSW has been changed over normally.
After TSW changeover, check the following lamp indications:
<STBY side>
TSW ACT (TSW card) = off
MUX ACT (MUX card)= off
<ACT side>
TSW ACT (TSW card) = lit (green)
MUX ACT (MUX card) = lit (green)
STEP 3 Turn ON (upward) TSW MBR key on the TSW card of STBY side.
TSW ACT (TSW card) = lit (red)
MUX ACT (MUX card) = off
STEP 4 Turn ON (upward) PLO MB key on the TSW card to be replaced.
STEP 5 Turn ON (upward) MB key on the TSW card to be replaced.
• M0SY lamp (TSW card) = off
• SYNC lamp (MUX card) = off
STEP 6 Disconnect MT24 TSW cables from MUX 1, MUX 2, and MUX 3 connectors.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
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