Brother International HL-3400CN Service Manual - Page 272

CHAPTER 8 TROUBLESHOOTING 4.1 Video Controller Mode Table 8-7 Service Call Message Meaning Countermeasure 61 PROG ERROR Program ROM checksum Replace with a new ROM. error 62 FONT ERROR Font ROM checksum error Replace with a new ROM. 63 D-RAM ERROR D-RAM error Replace with a new DIM M. 66 NV-W ERROR NVRAM write error Replace with a new main (video controller) PCB. 67 NV-R ERROR NVRAM read error Replace with a new main (video controller) PCB. 68 NV-B ERROR NVRAM write/read error Replace with a new main (video controller) PCB. 99 SERVICE 0-92 CPU address error Replace with a new main (video controller) PCB. 88 WARNING C3 Engine NV-RAM error See flow chart C3 later in this section. 88 WARNING C4 Engine controller error See flow chart C4 later in this section. 88 WARNING C7 Process timing clock error See flow chart C7 later in this section. 88 WARNING D1 Y switching clutch error See flow chart D1 later in this section. 88 WARNING D2 M switching clutch error See flow chart D2 later in this section. 88 WARNING D3 C switching clutch error See flow chart D3 later in this section. 88 WARNING D4 K switching clutch error See flow chart D4 later in this section. 88 WARNING D5 K, Y switching solenoid error See flow chart D5 later in this section. 88 WARNING D6 C, M switching solenoid error See flow chart D6 later in this section. 88 WARNING El 88 WARNING E2 88 WARNING E3 88 WARNING E4 Developer drive motor Main motor error Drum error Toner sensor error See flow chart El later in this section. See flow chart E2 later in this section. See flow chart E3 later in this section. See flow chart E4 later in this section. 8-14