Modules; Rail Signals; 3-Pps/M Primary Power Supply Module - GE Security EST3 Installation And Service Manual

Modules

EST3 Installation and Service Manual

Rail signals

The figure below shows the signals normally present on a pair of
chassis rails.
The panel controller and the power supply monitor module
Note:
must be installed in order to measure the voltages indicated.
Top Rail
Pin Function
1 - 2 +6.25 VDC
3 +Sense
4 -Sense
5 -
Audio Data
6 +
Audio Data
7 -Rail Data
8 +Rail Data
9 - 10 Not Used
11 - 14 Common
Bottom Rail
Pin Function
1 - 4 +24 VDC
5 All Fail
6 - 9 Not Used
10 - 12 Ground
[3RAILSIG.CDR]
The DC voltages can be checked with a digital meter. Data
signals on pins 7 and 8 of the top rail can be verified by looking
at the Receive (RX) and Transmit (TX) LEDs on any module
installed on the rail.

3-PPS/M Primary Power Supply module

The transmit (TX) and receive (RX) LEDs on the Primary Power
Supply Monitor Module should flicker, indicating normal two
way communication activity with the CPU.
TX RX
TX RX
[PSMONLED.CDR]
If the 3-PPS/M Primary Power Supply is used in conjunction
with one or more 3-BPS/M Booster Power Supplies, there is
Service and troubleshooting
Top Rail
J8 AIN
1 2
13 14
J10 AOUT
Bottom Rail
J8 CIN
1 2
J10 COUT
11 12
J9 BIN
J9
J8
J11
J10
J11 BOUT
J9 DIN
J9
J8
J11
J10
J11 DOUT
8.7