TECH BULLETIN #: 99-4100-002
REVISED: 8/6/99

PROBLEM/SYMPTOM:

Output Technology is discontinuing the main logic PCB part number 04000168xx for the 41XX printers. OTC will be only supplying main logic PCB with part number 04000145xx. We have found that our current transformer 1070002000 manufactured by TMI only, is supplying too much AC voltage for the 12 Volt DC regulators. Transformers Manufactured by Midwestco labeled with the same part number 107002000 do not have this problem. Without verifying the following matrix, you run the risk of damaging your main logic PCB with part number 04000145xx stamped or silk-screened on the PCB.

CAUSE:
Too much voltage supplied by TMI transformers with OTC part number 1070002000. This will cause damage to main logic boards 04000145xx. Older PCB's with 04000168xx do not run the risk of damage.

SOLUTION/PROCEDURE:

Follow the matrix below to determine what steps you need to take as to keeping the main logic PCB 04000154xx from being damaged upon powering on the printer.

Remember that the main logic PCB 04000168xx has no compatibility problem with the transformers from TMI, OTC part number 1070002000.

 

Component in use Do You Use Pigtail Part # 0200036900 TMI 1070002000   PCB 04000168xx NO PCB 040000145xx YES

Midwestco 1070002000 PCB 04000168xx NO PCB 04000145xx NO

SUMMARY:

Main logic PCB's 04000145xx will require a pigtailed cable (0200036900) at JP1 when used with TMI transformer labeled with part number 1070002000. If your TMI transformer is labeled with part number 1070002001, it is a modified transformer. If you are using a TMI transformer 1070002000 or 1070002001 with a main logic PCB with part number 10700168xx, there are no voltage concerns.