Ricoh G188 Service Manual page 153

you turn the drive gear [B] at a constant speed, as shown. (The straight arrow in the
picture shows belt movement direction.) Lubricant powder prevents the image transfer
cleaning blade from turning up.
Do not put the lubricant powder at the right side of the image transfer belt unit
(the above picture is taken from the rear). Otherwise, lubricant powder may
damage the encoder sensor.
SM 4-39
Image Transfer
G188/G189