Xerox 3300MFP Service Manual - Page 61
FAX Regulating Blade, Charging Portion, Modem Block Diagram
UPC - 095205744415
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Regulating Blade ■ Type: Regulating toner layer by pressure ■ Valid Length: 228 mm ■ Voltage: -420 V ~ -600 V Charging Portion FAX Section ■ Type: Conductive Roller Contact-Charge ■ Rotary Velocity: 179.7 mm/sec ■ Length: 230 mm ■ OD: ϕ 12.0 ± 0.05 mm ■ Shaft OD: ϕ 6 + 0 / -0.05 mm ■ Driver: Gear Driver ■ Roller life: 8.000 sheets or more ■ Roller Voltage: -1.25 ~ -1.70 KV Theory of Operation Modem Block Diagram Modem CX86710(SFX336) DSP SSD System Side Device Transformer Transformer CX20493 LSD Line Side Device MC14051BD Volume/Keyclick Control MC34119DR2 Speaker Driver SDAA Tel Line Ext Line LIU Sound Output s3300mfp-155 Implemented by based on Conexant DAA (Data Access Arrangement) Solution, and is roughly composed of two kinds Chip Solution ■ CX86710 (SFX336): Existing Modem Chip which adds SSD (System Side Device) for interfacing between LSD and DIB of FM 336 Plus Core. ■ CX20493 (LSD): LIU (Line Interface Unit) Chip which is controlled by SSD and satisfies each PSTN Requirements by modulating internal Configuration with connecting Tel Line. Phaser 3300MFP Service Manual 2-19