Kyocera KM-C2520 Service Manual page 194

2FZ/2F0/2HC-3
Code
C3300 Optical system (AGC) problem
After AGC, correct input is not obtained
at CCD.
C3500 Communication error between scan-
ner and SHD
An error code is detected.
C3900 Backup memory read/write problem
(scanner PWB)
Read and write data does not match.
C3910 Backup memory data problem (scan-
ner PWB)
Data in the specified area of the backup
memory does not match the specified
values.
C4000 Polygon motor synchronization prob-
lem
The rated speed achievement signal
won't turn to L in 20 s since the polygon
motor is activated.
C4010 Polygon motor steady-state problem
The rated speed achievement signal
turns to H every other 5 s after the poly-
gon motor is stabilized.
C4100 BD initialization problem
When power is turned on, ASIC of
engine PWB detects a BD error for 200
ms.
1-4-34
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC6 on
connector termi- the scanner PWB and the connector on the
nals. inverter PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective exposure Replace the exposure lamp or inverter
lamp. PWB.
Defective PWB. Replace the SHD PWB or CCD PWB and
check for correct operation.
Poor contact in the Check the connection of connector YC3 on
connector termi- the scanner PWB and the connector YC4 on
nals. the SHD PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective PWB. Replace the SHD PWB or CCD PWB and
check for correct operation.
Defective backup Replace the scanner PWB and check for
RAM or scanner correct operation.
PWB.
Problem with the Run maintenance item U020 to initialize the
backup memory backup memory data.
data.
Defective scanner If the C3910 is displayed after initializing the
PWB. backup memory, replace the scanner PWB
and check for correct operation.
Poor contact in the Check the connection of connector YC16 on
connector termi- the engine PWB and laser scanner unit, and
nals. the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective polygon Replace the laser scanner unit (see page 1-
motor. 5-18).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Poor contact in the Check the connection of connector YC16 on
connector termi- the engine PWB and laser scanner unit, and
nals. the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective polygon Replace the laser scanner unit (see page 1-
motor. 5-18).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Poor contact in the Check the connection of connector YC16 on
connector termi- the engine PWB and laser scanner unit, and
nals. the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective APC Replace the laser scanner unit (see page 1-
PWB BK (inner 5-18).
laser scanner unit)
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Remarks