York 00497VIP Thermostat User Manual


 
FORM 50.40-OM2
75YORK INTERNATIONAL
FPGA
MUX
MUX
A/D
CONVERTER
WATCH-
DOG
PROGRAM
SWITCHES
MICRO
DRAM
DISPLAY
CONTROLLER
DRAM
FLASH
EPROM
BIOS
EPROM
BRAM
XCVR
PC-104
PORT
UART
INPUT
BUFFER
PROGRAM
JUMPERS
BACKLIGHT
CONTROL
DATA
BUS
XCVR
SERIAL DATA
PORT 1
DISPLAY INTERFACE
BOARD
BACKLIGHT INVERTER
BOARD
DIGITAL
INPUTS
DIGITAL
OUTPUTS
SERIAL
DATA PORTS
2 THROUGH 5
ANALOG
INPUTS
+5VDC REF
LVG CHILLED
WATER TEMP
R25
R28
VOLTAGE
REG
VOLTAGE
REG
+ 12VDC
+ 5VDC
GND
Y
Y
Y
Y
TP2
TP1
TP4
TP3
+ 12VDC
+ 5VDC (ANALOG)
+ 5VDC (DIGITAL)
+ 3.3VDC
FROM
POWER
SUPPLY
FIG. 33 – MICROBOARD
LD06748
5