Service manual

2DA/2DB
1-5-24
Code Contents
Remarks
Causes Check procedures/corrective measures
Short-circuited external temperature
thermistor
• The input voltage is 4.5 V or more.
Finisher*
1
front side registration mo-
tor problem
• If the front side registration home po-
sition sensor is on in initialization, the
sensor does not turn off within 570
ms of starting initialization.
• If the front side registration home po-
sition sensor is off in initialization, the
sensor does not turn on within 3180
ms of starting initialization.
Finisher*
1
rear side registration mo-
tor problem
• If the rear side registration home posi-
tion sensor is on in initialization, the
sensor does not turn off within 570
ms of starting initialization.
• If the rear side registration home posi-
tion sensor is off in initialization, the
sensor does not turn on within 2880
ms of starting initialization.
C7810
C8170
C8180
Poor contact in
the humidity sen-
sor connector ter-
minals.
Defective humidity
sensor.
The front side reg-
istration motor
connector makes
poor contact.
The front side reg-
istration motor
malfunctions.
The front side reg-
istration home po-
sition sensor con-
nector makes
poor contact.
The front side reg-
istration home po-
sition sensor mal-
functions.
Defective finisher
main PCB.
The rear side reg-
istration motor
connector makes
poor contact.
The rear side reg-
istration motor
malfunctions.
The rear side reg-
istration home po-
sition sensor con-
nector makes
poor contact.
The rear side reg-
istration home po-
sition sensor mal-
functions.
Defective finisher
main PCB.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the drawer PCB and check for
correct operation.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the front side registration motor
and check for correct operation.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the front side registration home
position sensor and check for correct op-
eration.
Replace the finisher main PCB and check
for correct operation.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the rear side registration motor
and check for correct operation.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the rear side registration home
position sensor and check for correct op-
eration.
Replace the finisher main PCB and check
for correct operation.
*1: Optional. *2: Optional for 16 ppm model. Standard for 20 ppm model.