Lexmark 4059-XXX User Manual
Page 61

Diagnostic Information
2-34
4059-XXX
9
Engine Board
Turn the printer off and disconnect
all the cables from the engine board.
Check for +5 V dc at the engine
board test point. If incorrect, replace
the FRUs in the following order:
engine board
interconnect board
If correct, turn the printer off and
reconnect one cable at a time until
you find the defective assembly.
Service Tip: A short or low
resistance load that is attached to
the engine board can cause the
LVPS to overcurrent and shut the
+5 V dc supply down to 0 V dc.
Service Tip: Check the engine board
for burn marks or other damage,
especially R20,R21, R22 and R23
located next to the upper left engine
board mounting screw. If this screw
is overtightened it might deform the
engine board shield and cause it to
short out these resistors.
FRU
Action
- E260d (142 pages)
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- 10N0227 (1 page)
- Z12 (2 pages)
- 301 (144 pages)
- NO. 35 (1 page)
- Z65n (111 pages)
- dn2 (217 pages)
- 10E (144 pages)
- Z2300 (54 pages)
- 230 (213 pages)
- 310 Series (2 pages)
- PRO700 (24 pages)
- C 720 (18 pages)
- C520 (145 pages)
- X656 MFP (104 pages)
- Prospect Pro207 (27 pages)
- 337 (258 pages)
- OptraImage 242 (207 pages)
- T64x (6 pages)
- C524 (146 pages)
- 4098-001 (70 pages)
- 1200 Series (21 pages)
- X650 Series (8 pages)
- 5300 (179 pages)
- 302 (274 pages)
- 4549 (235 pages)
- 202 (320 pages)
- 4076-0XX (89 pages)
- 10N0016 (1 page)
- 5025 (171 pages)
- 1361760 (1 page)
- C 546dtn (6 pages)
- Interpret S400 (40 pages)
- x6575 (2 pages)
- 27S2156-001 (2 pages)
- MENUS AND MESSAGES C522 (55 pages)
- Z35 (101 pages)
- Z25 (24 pages)
- series x5100 (77 pages)
- Z82 (105 pages)
- 2500 Series (76 pages)
- 1200 (208 pages)
- Z33 (114 pages)
- 7600 Series (181 pages)