Table of Contents
ii 0070-10-0441 Passport 2®/Passport 2 LT™ Service Manual
Respiration ............................................................................................................................................. 2 - 17
Invasive Blood Pressure ............................................................................................................................ 2 - 18
Temperature............................................................................................................................................ 2 - 19
Timers .................................................................................................................................................... 2 - 19
Data Packets........................................................................................................................................... 2 - 20
TFT Display / Monochrome Interface Board and Keypad Board (P/N 0670-00-0686 or 0670-00-0726).................. 2 - 21
The EPLD Interface to the CPU Board VIA SPI .............................................................................................. 2 - 21
Video display connections ........................................................................................................................ 2 - 21
TFT Inverter Connection ............................................................................................................................ 2 - 21
Speaker connection ................................................................................................................................. 2 - 21
Encoder connection ................................................................................................................................. 2 - 21
NIBP Module (P/N 0997-00-0501) .................................................................................................................. 2 - 22
Pneumatic System Control......................................................................................................................... 2 - 22
Pressure Transducer, PT1 .......................................................................................................................... 2 - 23
Pressure Transducer, PT2 .......................................................................................................................... 2 - 23
Over-Pressure Detection............................................................................................................................ 2 - 23
Pump, M1 .............................................................................................................................................. 2 - 24
Dump Valve, V1...................................................................................................................................... 2 - 24
Linear Valve, V2...................................................................................................................................... 2 - 24
Primary Microcontroller, U10.................................................................................................................... 2 - 25
Secondary Microcontroller, U4 ................................................................................................................. 2 - 25
Memory ................................................................................................................................................. 2 - 26
CMOS Static RAM................................................................................................................................... 2 - 26
CMOS EEPROM...................................................................................................................................... 2 - 27
Voltage Sources ...................................................................................................................................... 2 - 27
Host Reset............................................................................................................................................... 2 - 28
Patient Connector Board AAMI......................................................................................................................... 2 - 29
Spark Gap Suppressor............................................................................................................................. 2 - 29
Neon Bulbs............................................................................................................................................. 2 - 29
Low-Pass Filter ......................................................................................................................................... 2 - 29
EMI Suppressor ....................................................................................................................................... 2 - 29
Patient and Power Isolation....................................................................................................................... 2 - 29
Provide mating for ECG, Temperature and two IBP connectors ......................................................................2-29
0670-00-0682-01 ................................................................................................................................... 2 - 30
0670-00-0682-02 ................................................................................................................................... 2 - 30
Patient Connector Board H.P. ........................................................................................................................... 2 - 31
Spark Gap Suppressor............................................................................................................................. 2 - 31
Neon Bulbs............................................................................................................................................. 2 - 31
Low-Pass Filter ......................................................................................................................................... 2 - 31
EMI Suppressor ....................................................................................................................................... 2 - 31
Patient and Power Isolation....................................................................................................................... 2 - 31
Provide Mating for ECG, Temperature and two IBP connectors......................................................................2-31
0670-00-0680-01 ................................................................................................................................... 2 - 32
0670-00-0680-02 ................................................................................................................................... 2 - 32
Nellcor/Interface Board................................................................................................................................... 2 - 33
Recorder Interface Board (AR-42)...................................................................................................................... 2 - 33
Detailed Description................................................................................................................................. 2 - 33
XE-50 Recorder Interface Board ........................................................................................................................ 2 - 34
Cooling Fault .......................................................................................................................................... 2 - 34
Fan-Fault Sense ....................................................................................................................................... 2 - 34
Power Filtering ........................................................................................................................................ 2 - 34
XE-50 Interface........................................................................................................................................ 2 - 34
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