hp Color 9850mfp DRUM UNIT II UNIT EXPLANATION 2-23 Symbol Name Function or method [27] Drum potential sensor K (DRPS K) Detects the surface potential of the drum K [28] Drum potential sensor C (DRPS C) Detects the surface potential of the drum C [29] Drum potential sensor M (DRPS M) Detects the surface potential of the drum M [30] Drum potential sensor Y (DRPS Y) Detects the surface potential of the drum Y DRDB/Y Drum drive board Y Drive board for the drum motor Y (M14) DRDB/M Drum drive board M Drive board for the drum motor M (M15) DRDB/C Drum drive board C Drive board for the drum motor C (M16) DRDB/K Drum drive board K Drive board for the drum motor K (M17) M14 Drum motor Y Drives the drum Y M15 Drum motor M Drives the drum M M16 Drum motor C Drives the drum C M17 Drum motor K Drives the drum K PS60 Encoder sensor Y1 Detects the rotation of the encoder forthe drum Y Manages the drive of the drum motor /Y (M14) There are two sensors, PS 60 and PS61, at opposite of the encoder to cancel the rotational fluctuations due to the eccen- tricity of the encoder PS61 Encoder sensor Y2 Detects the rotation of the encoder for the drum Y Manages the drive of the drum motor Y (M14) There are two sensors, PS 60 and PS61, at opposite of the encoder to cancel the rotational fluctuations due to the eccen- tricity of the encoder PS62 Encoder sensor M1 Detects the rotation of the encoder for the drum M Manages the drive of the drum motor M (M15) There are two sensors, PS 62 and PS63, at opposite of the encoder to cancel the rotational fluctuations due to the eccen- tricity of the encoder PS63 Encoder sensor M2 Detects the rotation of the encoder for the drum M Manages the drive of the drum motor M (M15) There are two sensors, PS 62 and PS63, at opposite of the encoder to cancel the rotational fluctuations due to the eccen- tricity of the encoder PS64 Encoder sensor C1 Detects the rotation of the encoder for the drum C Manages the drive of the drum motor C (M16) There are two sensors, PS 64 and PS65, at opposite of the encoder to cancel the rotational fluctuations due to the eccen- tricity of the encoder PS65 Encoder sensor C2 Detects the rotation of the encoder for the drum C Manages the drive of the drum motor C (M16) There are two sensors, PS 64 and PS65, at opposite of the encoder to cancel the rotational fluctuations due to the eccen- tricity of the encoder