• “Redrive motor service check” on page 246
• “Duplex motor service check” on page 246
• “Toner add motor service check” on page 247
• “Main cooling fan service check” on page 247
• “Cartridge cooling fan service check” on page 248
• “Fuser cooling fan service check” on page 248
• “9yy error messages” on page 248
• “Steps before starting the 9yy service checks” on page 252
• “System software error service check” on page 253
• “NVRAM mismatch failure service check” on page 258
• “RAM memory error service check” on page 259
• “Download emulation cyclic redundancy service check” on page 259
• “Base printer symptoms” on page 260
• “Network service check” on page 260
• “Dead machine service check” on page 262
1yy error messages
Error code Description Action
111.30 Printhead ID error Go to “Printhead ID service check” on page 242.
111.31 Printhead no first HSYNC error Go to “Printhead service check” on page 242.
111.32 Printhead loss of HSYNC error Go to “Printhead service check” on page 242.
111.33 Printhead loss of HSYNC during servo Go to “Printhead service check” on page 242.
111.34 Printhead mirror motor loss of lock Go to “Printhead service check” on page 242.
111.35 Printhead mirror motor initial lock Go to “Printhead service check” on page 242.
111.36 Printhead mirror motor stabilization error Go to “Printhead service check” on page 242.
111.37 Page reached input sensor but the mirror
motor was not locked
Go to “Printhead service check” on page 242.
111.38 Page reached input sensor but the
printhead startup was not complete
Go to “Printhead service check” on page 242.
111.90 Printhead video cable not plugged in See “Printhead service check” on page 242.
120.10 Fuser drive Motor Halls detection error See “Fuser drive motor service check” on page 243.
120.20 Fuser drive Motor took too long to stop See “Fuser drive motor service check” on page 243.
120.30 Fuser drive Motor Unable To Lock (before
motor ID)
See “Fuser drive motor service check” on page 243.
120.40 Fuser drive motor over‑speed error Go to “Fuser drive motor service check” on page 243.
120.60 Fuser drive motor unable to lock (after
motor ID)
Go to “Fuser drive motor service check” on page 243.
120.70 Fuser drive motor out of lock Go to “Fuser drive motor service check” on page 243.
4063
Diagnostic information
238
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