Description: IPU error
• After the command is written into the DFID self-diagnosis startup register, the correct value is not stored in the register in the specified duration. NOTE: This error is detected when the main switch is turned on. • After the negate interruption of FGATE occurs, IPU is not recognized in the specified duration. NOTE: This error is detected during scanning operations.
Causes: • IPU board defective (defective connection between ASIC and DFID, or Defective LSYNC)
Code: 195
Description: Serial Number Mismatch
• Serial number stored in the memory does not have the correct code.
Causes: • NVRAM defective • BCU replaced without original NVRAM • Incorrect DIP-switch setting
Code: 201
Description: Polygon motor error
• The polygon mirror motor does not reach the targeted operating speed within 10 seconds after turning on. • The lock signal does not become high within 3 seconds after turning off the polygon motor. • The lock signal does not become low within 0.2 second after the polygon motor reaches the targeted operating speed.
Description: Synch. detection signal error 1
220-001: Y 220-002: M 220-003: C 220-004: K0 220-005: K1 The front (for K&Y) or rear (for C&M) laser synchronizing detector board, (used to determine the start timing of laser writing), does not send a signal while the polygon motor operates normally and the LD is on.
Causes: • Disconnection of the cable between front (K&Y) or rear (C&M) synchronizing detector board and the LD unit • Incorrect installation of front (K&Y) or rear (C&M) synchronizing detector board (the beam does not target the photo detector.) • Defective LD unit • Defective BCU • Defective +5VLD circuit
Code: 221
Description: Synch. detection signal error 2
221-001: Y 221-002: M 221-003: C 221-004: K Main scan length detection is not correctly completed ten consecutive times. The front (for C&M) or rear (for K&Y) laser synchronizing detector boards are used for the main scan length detection, which automatically corrects the main-scan magnification.
Causes: • Damaged or disconnected cable between front (C&M) or rear (K&Y) laser synchronizing detector board and the LD unit • Incorrect installation of front (C&M) or rear (K&Y) synchronizing detector board (the beam does not target the photo detector.) • Defective front (C&M) or rear (K&Y) synchronizing detector board • Defective LD unit