Gestetner B147 Service Manual page 215

SC No. Item
SC 142 White level • The white level cannot be
detection error
SC 144 SBU • The SBU hardware is
communication
error
SC 161 IDU error • After the command is
• After the negate interruption
SM
Definition
• Dirty exposure glass
adjusted within the target
during auto gain control.
• SBU board defective
• IPU board defective
• Exposure lamp
• Lamp stabilizer
• Defective SBU
inconsistent with the
software. • Incorrect software
• IPU board defective
written into the DFID self-
diagnosis startup register,
the correct value is not
stored in the register in the
specified duration.
NOTE: This error is
detected when the main
switch is turned on.
of FGATE occurs, IDU is not
recognized in the specified
duration.
NOTE: This error is
detected during scanning
operations.
Related
Possible Cause
SCs
or optics section
defective
defective
hardware
(defective connection
between ASIC and
DFID, or Defective
LSYNC)
4-13
Troubleshooting Procedure
1. Turn on the main switch off and on.
2. Clean the exposure glass, white plate,
mirrors, and lens.
3. Check if the exposure lamp is lit
during initialization.
4. Check the harness connection
between SBU and IPU.
5. Replace the exposure lamp.
6. Replace the SBU board.
7. Replace the IPU board
1. Turn the main switch off and on.
2. Replace the SBU.
3. Update the software.
1. Turn the main switch off and on.
2. Replace the IPU board.
SC TABLE
Type
D
D
D
B147/B149/B190