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HP LaserJet Quick Reference Service Manual Page 222

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Scenario Number 3: (Least likely scenario) The printer may be
exhibiting a 79 Service (04CC) error. The 79 Service (04CC) was
added to the firmware code of formatters (9.1 version or greater) to
capture the signal combination that resulted in toner dumping.
Verify that the DC controller is not a 1.11 version, as in scenario
number 2. If the error condition continues, power cycle the printer;
do not replace the formatter. Escalate through the normal
escalation channel if the error persists.
Replace the DC controller only if it is a 1.11 version.
Improved MP Tray
Service Note Number:
Serial Number Range:
• 110V: XXYC00000 - XXYC99999
XXYD00000 - XXYD99999
• 220V: XXYC00000 - XXYC99999
XXYD00000 - XXYD99999
Where XX = US, NL, or SG
Y=B,C,D for 110V, or Q,R, or S for 220V
220 – Summary of service notes and technical tips
C3166A-09 & C3167A-09


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