Error code Description Action
929.01 The sensor (toner empty) does not provide toner
level feedback or the print cartridge is damaged.
Go to
“Sensor (toner empty) service check” on
page 249.
929.02
929.03
930.00 Possible causes:
• A non‑supported printhead is installed.
• Hsync signal is intermittent or noisy.
• Printhead ID resistor circuit is not to spec.
Replace the printhead.
Go to
“Printhead assembly removal” on
page 377.
931.00 The hsync signal is missing or not at the correct
voltage.
Go to
“Printhead failure service check” on
page 250.
932.00 The hsync signal is missing or not at the correct
voltage.
Replace the printhead.
Go to
“Printhead assembly removal” on
page 377.
933.00
934.00 The signals driving the polygon motor may have
been corrupted, or the cable may be loose, or the
motor may be bad.
Go to
“Motor (printhead polygon mirror) service
check” on page 251.
935.00
936.xx–945.xx error messages
Error code Description Action
936.10 The main drive motor assembly may be faulty or has
failed.
Go to
“Main drive motor assembly service
check” on page 251.
936.11
936.20
936.21
936.30
936.31 The main drive motor assembly may be faulty or has
failed.
Go to
“Main drive motor assembly service
check” on page 251.
936.60
936.61
936.90
936.91
937.40 The main drive motor assembly may be faulty or has
failed.
Go to
“Main drive motor assembly service
check” on page 251.
937.41
937.50
937.51
937.70
7462
Diagnostic information
228
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