Ricoh FW 810, Service Manual, Page: 71 / 170

12. SERVICE CALL CONDITIONS
When functional problems occur within the copier, the Call Service indicator
( ) lights. At the same time, "E" and a code number blink alternatively in the
copy counter display.
CODE E1 (Abnormal Exposure Lamp)
Code E1 blinks if the output voltage of the light sensor drops below 0.45 volts
and this condition continues for 20 seconds or more after the exposure lamp
on signal is output.
CODE E2 (Fusing Thermofuse Open)
Code E2 blinks if the fusing temperature does not reach 100
o
C within 4
minutes after the main switch is turned on.
CODE E3 (Hot Roller Thermistor Open)
Code E3 blinks if the resistance of the thermistor (TH1) is 126.5 k
Ω
or more, 2
minutes after the fusing lamp turns on.
CODE E4 (Hot Roller Thermistor Short)
Code E4 blinks if the resistance of the thermistor (TH1) is 0.1 k
Ω
or less, 2
minutes after the fusing lamp turns on.
CODE E5 (Pressure Roller Thermistor Open)
Code E5 blinks if the resistance of the thermistor (TH2) is 1 m
Ω
or more, 2
minutes after the fusing lamp turns on.
CODE E6 (Pressure Roller Thermistor Short)
Code E6 blinks if the resistance of the thermistor (TH2) is 0.5 k
Ω
or less, 2
minutes after the fusing lamp turns on.
CODE E7 (Exposure Lamp Thermistor Open)
Code E7 blinks if the resistance of the thermistor becomes 248
Ω
or more,
and if this condition continues for 20 seconds.
CODE E8 (Exposure Lamp Thermistor Short)
Code E8 blinks if the resistance of the thermistor becomes 2.4
Ω
or less, and
if this condition continues for 20 seconds.
CODE E9 (Fusing Overheat)
Code E9 blinks if the hot roller temperature reaches 200
o
C.
6 January 1990
2-49