Power; Printed Vertical Lines Are Curved - Ricoh BP20 Service Manual

SET MALFUNCTIONS
4.8.8 NO POWER
Description: LEDS on the operation panel do not light when the power is turned
on.
Cause
1. Check if the power input and SMPS
operate correctly.
2. Normal sounds are heard but lamps do
not come on.
3. No sounds are heard and lamps do not
come on after you replace the SMPS.

4.8.9 PRINTED VERTICAL LINES ARE CURVED

Description: Vertical lines on the output print are not straight.
Cause
Check the +24V power supply to the LSU.
G144/G145
1. Replace the power supply cord or SMPS.
Replace the power or SMPS fuses if
necessary.
2. Check the operation panel connector.
Replace if necessary.
3. Replace the main PBA.
Replace the LSU if +24 is stable.
Replace the SMPS if +24V is not stable.
If the problem persists, replace the main
PBA.
4-22
Solution
Solution
SM