Philips Fm2 Service Manual

Chapter 3 - Tests and Error Codes19
3
Tests and Error Codes
Service Philosophy
If the monitor detects a problem, it displays an error screen that shows an error 
reference number, and monitoring is discontinued. In addition, the errors are 
written to the error log (see Table 3, “FM-2 Error Codes,” on page 23).
Read the system error log to determine whether the fault lies in the hardware or 
firmware. These problems can be repaired by board replacement or unit 
exchange. Do not attempt component-level...

Checking the Battery
20Chapter 3 - Tests and Error Codes
Checking the Battery
Before testing the monitor after repair or service, ensure that the battery itself is 
not at fault. See “Battery Charging and Maintenance” on page 82.
Visual Test
Visually inspect the monitor and its accessories after a repair, and also on a 
regular basis as part of routine maintenance. Ensure that the monitor, cables, 
line cords, transducers and instruments have no visible evidence of damage that 
may affect patient safety...

FM-2 Power-On Self-Test
Chapter 3 - Tests and Error Codes
21
The watchdog timer is allowed to time out, and the interrupt expected to 
occur is verified to have occurred. Software will detect a watchdog failure if 
the watchdog timer does not expire within a specified amount of time.
Performing the Power-On Self Test
1. Press the On/Off button  .
2. Initially the LCD screen illuminates, but is blank.
3. After two or three seconds, the monitor plays a two-tone power-on jingle 
while performing the...

Performance Test for Transducers
22Chapter 3 - Tests and Error Codes
Performance Test for Transducers  
This tests the signal path to and from the transducers.
1. Turn on the monitor and the recorder or printer.
2. Connect one or two US cables and the TOCO transducer.
3. Check that the display acknowledges the connected transducers in the 
appropriate frames.
Also refer to “Testing Transducers” on page 90.
Error Handling
There are two types of error that you may see: those that the monitor cannot...

Error Codes
Chapter 3 - Tests and Error Codes
23
Error Codes
The error codes are primarily intended for diagnostic use at the factory. The 
errors, their explanation, and any service action required are shown in the 
following table. 
Table 3 FM-2 Error Codes
Error 
CodeExplanationAction
1 Monitor’s memory has become corrupt
Replace the monitor 2 Invalid internal software state in the monitor
3 Unable to acquire a software resource
(queue, semaphore, etc.)
4Stack overflow
5 Bad parameter value passed to...

Error Codes
24Chapter 3 - Tests and Error Codes
16 Failed to allocate requested memory
Replace the monitor 17 A problem with the Codec has been detected
18 High half-word of flash failed to program
19 Low half-word of flash failed to program
20 High half-word of flash failed to verify
21 Low half-word of flash failed to verify
30 Error in communications micro-controller Check the side connector PCB. 
Replace if necessary.
50 Corrupt patient record (trend file)
None: factory diagnostic infor-
mation only...

Chapter 4 - Power-up Default Settings and the Service Menu25
4
Power-up Default Settings and the
Service Menu
Introduction
This section discusses use of the Power-up Defaults Menu to configure power-
on default settings, and the Service Menu to obtain service-related information 
about the monitor.
Power-up Defaults Settings
These are parameters which can be changed by the user. The power-up defaults 
allow you to create a power-up default for many  settings in the monitor. Power-
up defaults are the...

Service Menu
26Chapter 4 - Power-up Default Settings and the Service Menu
Service Menu
The purpose of the Service Menu is to allow factory, field-service, and hospital 
biomedical technicians access to a series of test and system-related information 
screens for the purpose of verifying monitor performance or troubleshooting 
problems.
To access the Service Menu, press the navigation knob when the Power Status 
Frame is selected. The following can be viewed from the Service Menu: Data transfer...

Service Menu
Chapter 4 - Power-up Default Settings and the Service Menu
27
The Service Menu lists the test and system-related information screens. Selection 
of an item in the menu will invoke that test or information screen. The test and 
information screens that appear in the Service Menu are as follows:
Error Log
System Analog-to-Digital (A/D) Values Table 5 Service Menu Entries
Menu ItemExplanation
View Error Log Displays the error log menu
View A/D Values Displays the Analog-to-Digital (A/D)...

Service Menu
28Chapter 4 - Power-up Default Settings and the Service Menu
Error Log
This screen displays the eight most recent error code types, logged by the 
monitor. After eight error code types have been logged, the oldest error code 
type will be deleted as new error code types are added. Adjacent to each error 
code will be an entry which is the number of occurrences of that error. This 
means that if there are many occurrences of one type of error code, that one 
error code won’t overwrite the...