Advanced Instruments Fluorophos FLM300 - Page 15

Chapter 2 Circuit System
13
Fluorophos® ALP Test System Model FLM300 Service Manual
The D-type 15-pin port connects and provides power to
a barcode reader and has the following pin assignments:
Signal Pin Direction
+5 VDC 1 to reader
Recieve data 10 from reader
0 V 9 common
For proper operation, the barcode port requires a 1200
bps, RS-232 signal providing asynchronous serial data
containing 1 start bit, 8 data bits, 1 stop bit, and no parity.
A suitable barcode scanner is available from Advanced
Instruments. To interface with the instrument, the
barcode scanner must be programmed as follows,
referring to the scanner user’s guide:
• 1200 bps
• CR sux
• disable beep after good decode
• triggerless trigger mode (optional)
Internal Printer: The internal printer assembly (325420)
consists of the sheet metal mounting bracket, thermal
print head (325404), main control board (325421),
printer interface board (PCB402), the control cable
(325419), and printer LED indicator assembly (FL2205).
All of this is connected to the application board
(FL2167PC) via cable (325415) .
The printer control board translates the data from the
application board into control signals for the print head
thermal elements and drive motor. This board also
contains a factory-set configuration DIP switch (DS1) and
jumper (JP1). The DIP switch settings are: positions 1-2
and 4-8 are OFF, and position 3 is ON.
The printer interface board contains the power circuit
converting 12 VDC into 5 VDC.
POWER CONNECTION TO J1 SHOULD NOT BE
RECONNECTED WITH INSTRUMENT POWER ON, OR
DAMAGE TO THE INSTRUMENT MAY RESULT.
The printer interface board also contains a feed/self-test
switch (S1). If the self-test switch is depressed as
instrument power is applied, the printer will enter
self-test mode and print out settings and a test character
set.
The red indicator LED lights when the printer door/
platen interface is not closed, and blinks when one of
several printer errors have occurred, requiring factory
assistance. The amber indicator LED lights when the
door is closed and no paper is detected in the printer.