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Troubleshooting & Repair Teledyne API - Model 200EH/EM Operation Manual
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11.6.2. FLASH CHIP REPLACEMENT OR UPGRADE
The M200EH/EM CPU board can accommodate up to two EEPROM flash chips. The standard configuration is
one chip with 64 kb of storage capacity, which is used to store the analyzer configuration as created during final
checkout at the factory. Replacing this chip will erase that configuration, which will be recreated with a new copy
when restarting the analyzer. However, if the firmware and/or the DOC is changed at the same time, all
analyzer configuration settings and iDAS data will be lost. Adding a second EEPROM chip to the existing chip
will double memory but this procedure will require a BIOS configuration and is not a standard sales option. Also
make sure that you receive a fully formatted EEPROM chip for replacement. Contact the factory for details.
1. Ground yourself to prevent electrostatic damage to electronic components.
2. Turn off power to the instrument, fold down the rear panel by loosening the mounting screws.
If necessary, lift the cover to prevent the rear panel connectors from brushing against it.
3. Locate the EEPROM chip in the left-most socket of the CPU board.
The chip is almost square with one corner cut off, the socket is shaped accordingly and the chip is
recessed into the socket.
4. Remove the old chip by using a special tool or gently pry the chip out using a very fine screwdriver.
Make sure not to bend or destroy any of the contacts of the socket.
When upgrading the CPU with a second chip, no removal is necessary as the second socket should
be empty.
5. Reinstall the new or additional EEPROM chip, making sure the cut-off edge matches that of the socket.
Press the chip symmetrically and straight all the way in.
6. Close the rear panel and cover and turn on power to the machine.
If a front panel message
Flash Format INVALID appears on start-up, the EEPROM was not properly
formatted. Contact the factory for a proper replacement.
11.6.3. O
3
GENERATOR REPLACEMENT
The ozone generator is a black, brick-shaped device with printed circuit board attached to its rear and two tubes
extending out the right side in the front of the analyzer. To replace the ozone generator:
1. Turn off the analyzer power, remove the power cord and the analyzer cover.
2. Disconnect the 1/8” black tube from the ozone scrubber cartridge and the ¼” clear tube from the plastic
extension tube at the brass fitting nearest to the ozone generator.
3. Unplug the electrical connection on the rear side of the brick.
4. Unscrew the two mounting screws that attach the ozone generator to the chassis and take out the entire
assembly.
5. If you received a complete replacement generator with circuit board and mounting bracket attached,
simply reverse the above steps to replace the current generator.
6. Make sure to carry out a leak check and a recalibration after the analyzer warmed up for about 30
minutes.
04521C (DCN5731)