Technical Support Bulletins
Spectronic GENESYS 10 EEPROM replacement (Firmware Rev. 1.030 and earlier)
Caution Do not begin this procedure unless you have a Spectronic GENESYS 10
Service manual (Catalog number 335901-10020) and a certified wavelength
filter.
This upgrade procedure requires the use of a didymium filter (certified or
non-certified) for the wavelength calibration of the instrument and the use
of a traceable wavelength standard for final testing and certification after
calibration. (This may be the same didymium filter used for calibration if a
certified didymium filter was used for the calibration.)
• Thermo Electron Corporation sells wavelength filters:
• Filter Set (catalog number 942318503111) which includes a traceable holmium filter (can be used
only for final testing & certification) and a traceable didymium filter (can be used for both
calibration and certification)
• SPECTRONIC Standards (catalog number 333150) which includes a traceable wavelength filter
(can be used only for final testing & certification)
• Non-certified didymium filter (catalog number 333159) for only the wavelength calibration
• Performing this upgrade will cause any stored tests to be deleted due to improvements in the
software and resultant data structures. Therefore, we recommend printing or otherwise recording your
test setup screens for greater ease in re-programming them.
• Observe proper ESD procedures.
• Use appropriate tools (e.g., PLCC extractor tool).
• A Personal Computer is required to perform this procedure, along with a working RS232 serial port
and interface cable (Part #335942 or equivalent*).
• The Spectronic GENESYS 10 Service Diagnostic software Rev. 1.40 or higher (included in your
service manual, or sold separately as Part # 335901-10005) is also required to perform this upgrade.
* Serial Cable pinout:
Instrument <----------> Computer
Pin (9-pin)(25-pin)
Transmit 2 <----------> 2 3 Receive
Receive 3 <----------> 3 2 Transmit
Ground 5 <----------> 5 7 Signal Ground
CTS 7 <----------> 7 4 RTS
RTS 8 <----------> 8 5 CTS
Procedure
1. Turn off and disconnect power from the instrument.
2. Turn the instrument upside down, being careful not to scratch the plastic cover.
3. Ensure that proper ESD protection is in place.
4. Remove the four (4) screws that secure the bottom cover to the instrument base
Caution: The bottom cover is wired to the instrument base.
5. Remove the cover gently, so as not to stress the ground wire connection.
6. Using a PLCC ROM extractor tool, remove the ROM (marked with a label). The board is marked
U39 next to the socket. This is the only Integrated Circuit (IC) on the Main Circuit board that is
socketed and can be removed. Do not attempt to remove any other components, including
connectors or jumpers. (See Figure 11.1 Close-up photo of the socket and ROM [on next page].)
11-9
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