Gestetner B070 Service Manual page 325

SC143: SBU (Sensor Board Unit) Error 1
Definition [B]
At power on, the SBU white level adjustment, black level check, and final SBU
white level check did not execute.
Possible Causes
• SBU defective
• IPU defective
• BCU defective
• Harness between the SBU and IPU defective
• Standard white plate not installed correctly, or is dirty
• Scanner mirrors and/or lenses are dirty or installed incorrectly
SC144: SBU (Sensor Board Unit) Error 2
Definition [B]
At power on, the specified SBU ID (GASBUP and LM98513) could not be read
after 3 tries
Possible Causes
• SBU defective
• IPU defective
• BCU defective
• Harness between SBU and IPU defective
SC300: Charge Corona Output Error 1 (Charge Leakage)
Definition [B]
A high feedback voltage for the charge corona (more than 4.5 V) was detected
from the CBG (charge, bias, grid) power pack 9 times within 60 ms.
Possible Causes
• CBG power pack defective
• Poor charge corona unit connection
• Charge corona unit connector defective
SM
CÓPIA NÃO CONTROLADA
4-5
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
B070/B071