Flatbed Home Position Service Check - Ricoh M126 Service Manual

6.5.23 FLATBED HOME POSITION SERVICE CHECK

Step Questions / actions
POR the machine. Does the CCD
1 move and return to the home
position?
Perform the home position sensor
test. See "Scanner Tests" in "System
2
Maintenance".
Is the sensor working properly?
Check J28 on the controller board
3 for proper connection.
Is it connected properly?
Check pin 1 in J28 for voltage. The
voltage is only present when a
4 flatbed copy job is running. The
voltage should measure +24V AC. Is
voltage present?
Ensure that the home position cable
5 (J13) is connected. Is the cable
connected?
Check pin 1 in J13 for voltage. The
voltage should measure +5V DC.
6
Pin 2 should be GND. Is voltage
present and is it correct?
SM
Yes
Problem solved.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Replace the flatbed
unit. See "Flatbed
removal" in
"Replacement and
Adjustment".
6-91
Service Checks
No
Go to step 2.
Go to step 5.
Properly connect
the cable.
Replace the
controller board
( p.4-7
"Controller Board
Removal").
Properly connect
the cable.
Replace the
controller board
( p.4-7
"Controller Board
Removal").
M126/M127/M128