Installing The Optional Communication Expansion Card (Cec) Pcb - Teledyne Meridian User Manual

MERIDIAN
UNIVERSAL GAS DETECTOR
INSTALLATION

4.1.24 Installing the Optional Communication Expansion Card (CEC) PCB

To install an optional communication expansion card (CEC) PCB when required, follow the steps below. The
optional CEC PCB is automatically configured on installation.
WARNING: ENSURE RECEIVERS AND POWER SUPPLIES ARE NOT POWERED WHEN
INSTALLING PCB INTO THE DEVICE. FAILURE TO DO SO COULD RESULT IN INJURY OR
DEATH.
WARNING: ENSURE THE ATMOSPHERE IS FREE FROM COMBUSTIBLE AND/OR TOXIC
GASES PRIOR TO STARTING THIS PROCEDURE. FAILURE TO DO SO COULD RESULT IN INJURY
OR DEATH.
1. Unscrew the setscrew and housing cover, then pull on the LCD PCB/CPU PCB set from the four (4) standoffs.
2. Connect the CEC PCB's female 20-pin connector (S3) into the male 20-pin connector (P3) on the CPU PCB
(refer to Figure 4-22: Optional Communication Expansion Card (CEC) PCB Connection
Figure 4-22: Optional Communication Expansion Card (CEC) PCB Connection
3. Secure the CEC PCB using the three (3) screws.
NOTE: Ensure all related switches and jumpers are properly set on other applicable PCBs.
4. Push the LCD PCB/CPU PCB and CEC PCB set into the four (4) standoffs.
5. Install housing cover and tighten the setscrew.
6. Apply power to receiver.
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