Kyocera TASKalfa 620 Service Manual page 181

Code
C3210 CIS lamp problem
• After the reading starting, when input
value at the time of CIS illumination
does not exceed the threshold value
between 5 s.
C3300 Optical system (AGC) problem
• After AGC, correct input is not
obtained at CCD.
C3310 CIS (AGC) problem
• After AGC, correct input is not
obtained at CIS.
C3500 Communication error between scan-
ner and SHD
• An error code is detected.
C3900 Backup memory read/write error
(scanner PWB)
• Read and write data does not match.
C3910 Backup memory read/write error
(scanner PWB)
• Data in the specified area of the
backup memory does not match the
specified values.
Contents
Causes Check procedures/corrective measures
Defective DP main Replace the DP main PWB and check for
PWB. correct operation.
Poor contact in the Check the connection of connector YC2 on
connector termi- the DP main PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective CIS. Replace CIS and check for correct operation
(see page 1-5-79).
Defective DP Replace the DP inverter PWB and check for
inverter PWB. correct operation.
Insufficient expo- Replace the exposure lamp or inverter
sure lamp luminos- PWB.
ity.
Defective scanner Replace the scanner PWB and check for
PWB. correct operation.
Incorrect shading Adjust the position of the contact glass
position. (shading plate). If the problem still occurs,
replace the scanner home position sensor.
CCD PWB output Replace the ISU (see page 1-5-39).
problem.
Poor contact of the Check the connection of connectors YC5,
connector termi- YC6 and YC8 on the SHD PWB and YC1,
nals. YC2 and YC3 on the CCD PWB, and the
continuity across the connector terminals.
Repair or replace if necessary.
Defective DP main Replace the DP main PWB and check for
PWB. correct operation.
CIS output prob- Replace CIS (see page 1-5-79).
lem.
Defective DP Replace the DP inverter PWB and check for
inverter PWB. correct operation.
Defective SHD Replace the SHD PWB and check for cor-
PWB. rect operation.
Poor contact in the Check the connection of connector YC3 on
connector termi- the scanner PWB and YC4 on the SHD
nals. PWB, and the continuity across the connec-
tor terminals. Repair or replace if necessary.
Defective scanner Replace the scanner PWB and check for
PWB. correct operation.
Defective back up Replace the scanner PWB and check for
RAM or scanner correct operation.
PWB.
Problem with the Run maintenance item U022 to initialize the
backup memory backup memory data.
data.
Defective scanner If the C3910 is displayed after initializing the
PWB. backup memory, replace the main PWB and
check for correct operation.
Remarks
2KN/2KP
1-4-37