4805B1(H) - Details of the service call (hardware error)
01(H) - The fusing lamp temperature stayed above 175 °C while printing.
02(H) - The fusing lamp temperature did not reach 150 °C before starting printing.
03(H) - The fusing lamp temperature did not go down to 80 °C while in standby mode (when
fusing lamp OFF was selected for energy saver mode)
04(H) - The fusing lamp temperature did not go down to 80 °C while in standby mode (when
fusing lamp Standby [80 °C] was selected for energy saver mode)
05(H) - The fusing lamp temperature stayed below 80 °C while in standby mode (when fusing
lamp Standby [80 °C] was selected for energy saver mode)
07(H) - The fusing lamp temperature came below 140 °C while printing
08(H) - The fusing lamp temperature exceeded 250 °C
09(H) - A fusing thermistor error was detected
11(H) - Charge leak current was detected while the charge corona unit was activated
12(H) - Charge leak current was detected while the charge corona unit was not activated
21(H) - The laser synchronization signal was not detected during printing
31(H) - Polygonal mirror motor startup error
32(H) - Polygonal mirror motor error during printing
41(H) - Main motor startup error
42(H) - Main motor error during printing
When a service call was caused by a fusing lamp failure (codes 01 - 09):
The same code is stored at address 4805AF(H).
After fixing the problem, reset the data at address 4805AF(H) to 00(H), then restart the ma-
chine to clear the service call.
When a service call was caused by another hardware failure (codes 11 - 42):
If the problem remains after restarting the machine (power off/on), fix the hardware problem.
The service call condition is cleared after power up.
4805C8(H) - Initial Toner Supply
Bit 3: Initial toner supply 0: Off, 1: On
Whenever the development unit is replaced, do the following procedure.
1. Make sure that the drum, CTM, and the new development unit are correctly installed.
2. Turn on the machine and change this bit to 1.
3. Turn off the machine.
4. Turn on the machine. The machine starts filling up the empty development unit hopper with
new toner. (This bit is reset to zero automatically.)
5. Make test copies or test patterns to check the print quality.
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December 21st, 1995
SERVICE TABLES AND PROCEDURES
SERVICE RAM ADDRESSES
4-95
