Gestetner B130 Service Manual page 135

No. Definition
SC Error
Level
Code Code
546 -- A
547 B
548 9-22 A
549 9-22 A
550 9-22 A
551 9-22 A
SM
CÓPIA NÃO CONTROLADA
Symptom
Unstable fusing temperature
While the fusing lamp is on,
the fusing temperature varies
50°C or more within one
second; and this occurs two
consecutive times.
Zero cross signal malfunction
The zero cross signal is not
detected within five seconds
after the main power switch is
turned on. Or, the zero cross
signal is not detected within
one second after operation
begins.
Fusing-temperature range violation (too high)
During paper transport, fusing
temperature moved above limit
(200°C for plain paper, 210°C
for thick paper) and remained
above limit for 10 seconds.
( 4.4)
Fusing-temperature range violation (too low)
During paper transport, fusing
temperature fell below lower
limit (155°C) and remained
below limit for 6 seconds.
( 4.4)
Standby temperature error 1
Fusing temperature failed to
drop to expected level within a
given time (15 seconds, 15
minutes, or 25 minutes,
depending on mode) after
entering standby or low-power
mode. ( 4.4)
Standby overheat
Temperature during standby or
low-power mode remained too
high for a specified interval (10
seconds or 25 seconds,
depending on the mode).
( 4.4)
4-15
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
Possible Cause
• Defective thermistor
• Incorrect installation of the
thermistor
• Defective power supply unit
• Defective power supply unit
• Defective BICU
• TRIAC short
• Fan not running
• Fusing thermistor defective
• PSU defective
• TRIAC short
• Fan not running
• TRIAC short
B129 Series/B044 Series